UpStudy - Your Best AI Study Buddy
UpStudy - Your
Best AI Study
Buddy
UpStudy transforms any questions into easy wins – just snap, learn, and master! As your trusted AI Homework Helper, it offers instant help and personalized guidance, making success just a tap away!
error msg
Download APP 
Add to Chrome 
Why they Choose UpStudy AI
Supercharge Your Learning Journey! Powered by advanced homework helper AI, you'll get easier, smarter studying plus all the support and guidance you need. Let's make it happen with UpStudy!
Homework Helper
Snap a question and let UpStudy help you understand it! Get clear step-by-step solutions that show you the what, why, and how of every problem. Learning just clicked! 📸✨
Study Guide Pro
From checking answers and reminding what’s next to discovering study materials, UpStudy will track your progress and personalize your learning journey for clear, confident progress. 📚📈
Test Prep Master
Whether it's SAT, AP, or just midterms, UpStudy got your back! Pick any topic and get custom practice questions with detailed explanations. You'll ace that test in no time. 🎯🚀
24/7 AI Buddy
Get instant professional help with tough problems and a supportive friend when stress hits. From homework solutions to friendly chats, UpStudy is here to make your learning journey brighter! 🌟💭
Level up with UpStudy Nation
Join thousands of smart learners worldwide as we transform education together. Study smarter, share wins, and be part of the AI learning revolution!
- "What was your biggest study frustration before? "
- " What made you try UpStudy? Remember that first 'aha!' moment using our app? "
- " How would you describe UpStudy to a friend who's struggling with their studies? "
UpStudy has been a total lifesaver for me this semester. I was pretty nervous about Calculus I since math wasn't my strongest subject in high school, but UpStudy has basically become my go-to study buddy.
Jason, College, United States
Math is my biggest weakness. The signs and the numbers are just too confusing for me, especially when there's a four-digit number or more. And I also have anxiety when I raise my hand, and I am afraid that if I say a solution that might be wrong, I'll be humiliated in front of the whole class. That's so embarrassing.
Abigael, High School, Switzerland
Like that time when I was already 2 hours doing my homework and nothing was working for me to understand what was going on.
Sarah, High School, Brazil
Like last week, I was completely lost on implicit differentiation during class, but I went back to my dorm and used UpStudy, scanned my problems, did their practice problems, and it finally clicked. The best part is I can get the most detailed explanation and guidance!!
Jason, College, United States
My "aha!" Clicked in when UpStudy helped me with my Physics Homework even though I'm in newbie and I just got UpStudy I still think that I will use it or at least the next 20 years 🫣😂📚
Abigael, High School, Switzerland
When I was so lost in my math homework, I was trying already 2 hours to be focused but I wasn't getting it at all! And so I tried the app, I wasn't expecting to understand everything at once, but with the AI tutor's help I did it!!
Sarah, High School, Brazil
I'm pretty sure there are a bunch of other freshmen in my class using UpStudy too. It's honestly kind of amazing that such a helpful app. Makes me feel a lot more confident about taking Calc II next semester.
Jason, College, United States
UpStudy is a great app to help you with your studies, especially if you're struggling. I used to practice hours and hours, and I still got a bad grade. But ever since I got UpStudy, I only have to learn 1 hour a day for any test or pop quizzes, and boom! I score well on every test! You should definitely try it out!
Abigael, High School, Switzerland
UpStudy is such a great app, especially If you are a self-taught person the AI tutor can do so much for you and your apprenticeship.
Sarah, High School, Brazil
FAQs about UpStudy Your AI Homework Companion Explained
How Does AI Help with Homework?
Artificial Intelligence (AI) has transformed how students approach their studies by offering customized and efficient assistance. Below is how AI enhances homework experience:
- Personalized Learning: AI can detect individual learning patterns to provide customized explanations and resources tailored specifically to student needs, guaranteeing they receive support that best fits them.
- Instant Feedback: AI's instant solutions and explanations help students more quickly comprehend mistakes and grasp concepts, leading to ongoing learning.
- 24/7 Accessibility: AI-powered tools offer 24/7 tutoring support, giving students the freedom to seek assistance whenever needed without being limited by traditional tutoring schedules.
- Engaging Learning Methods: AI makes learning more engaging by offering interactive problem-solving and adaptive quizzes that engage students more and help them retain information more efficiently.
By leveraging these capabilities, AI serves as a trustworthy homework assistant that enables students to achieve academic excellence.
What Makes UpStudy the Best AI Homework Helper?
UpStudy stands out as an exceptional artificial intelligence homework helper by way of several key features:
- Proprietary AI Model: UpStudy stands out from generic solutions by employing its own artificial intelligence model trained on millions of real homework questions submitted from students worldwide - providing highly accurate, contextually relevant assistance.
- Advanced Math Engine: UpStudy's advanced math engine overcomes common AI shortfalls by providing accurate calculations and solutions, eliminating errors found on other platforms.
- Comprehensive Subject Coverage: UpStudy goes far beyond mathematics to offer support across various disciplines and subject areas, making it a truly versatile solution capable of answering queries across any subject area.
- Holistic Learning Features: UpStudy provides users with daily challenges, trending questions, popular quizzes and concept learning modules designed to support an immersive learning journey beyond classroom walls.
- Expert Tutor Support: UpStudy goes beyond AI by providing real tutors to assist with homework 24/7 - giving students personalized and immediate help when needed.
These features collectively position UpStudy as a leading AI homework helper, offering a blend of technological innovation and human expertise to enhance the learning experience.
Is UpStudy AI Free?
Yes, UpStudy is a free AI homework helper. Students can access UpStudy through multiple platforms:
- iOS App: Available for download on the App Store, providing seamless access on iPhones and iPads.
- Android App: Accessible via the Google Play Store, ensuring compatibility with a wide range of Android devices.
- Chrome Extension: For those who prefer desktop assistance, UpStudy offers a Chrome extension that integrates directly into your browser for convenient use.
By offering these platforms, UpStudy ensures that students can utilize its AI-powered homework assistance anytime, anywhere, without any cost.
Daily Study Tips & Tricks
Discover fresh study hacks, subject deep dives, and expert tips daily! From test-taking strategies to success stories, UpStudy is sharing everything you need to boost your academic success.
Pre Algebra
9 mins read
How Do You Find a Percent
Unlock the secrets of percentages! Discover key formulas, mental math hacks, real-world applications, and advanced insights to calculate percentages effortlessly.
Alice Brooks
Feb 21, 2025
Geometry
7 mins read
How to Find the Volume of a Cylinder
Sophia Greene
Feb 21, 2025
Probability
10 mins read
What is a Probability Density Function?
Alice Brooks
Feb 20, 2025
Geometry
9 mins read
What Is a Cone?
Sophia Greene
Feb 17, 2025
All subjects
All Levels, All Success
From basic algebra to advanced calculus, literature to chemistry, elementary school to college – UpStudy's AI homework help covers it all. Here, no question too simple, no topic too complex.
-
Mathematics
- Arithmetic
- Pre Algebra
- Algebra
- Pre Calculus
- Calculus
- Geometry
- Statistics
- Probability
- Trigonometry
-
Physics
-
Chemistry
-
Biology
-
History
-
Geography
-
Economics
-
English
-
Everyday
-
Arts
-
Computer Technology
-
Medicine
-
Social Sciences
-
Humanities
-
Engineering
-
Other
45. น้องใบบัวต้องการนำเงิน 11,000 บาท ไปแจกเด็ก โดยเงินที่นำไปแจกเป็นธนบัตรฉบับละ 20 บาท จำนวน 2,000
บาท เป็นธนบัตรฉบับละ 50 บาท จำนวน 4,000 บาท ที่เหลือเป็นธนบัตรฉบับละ 100 บาท โดยเด็กแต่ละคนจะได้รับเงิ่
เท่ากัน และได้รับธนบัตรครบทั้งสามชนิด โดยที่ไม่มีธนบัตรเหลืออยู่ เด็กแต่ละคนจะได้รับเงินอย่างน้อยที่สุดกี่บาท
1) 500 บาท
2) 550 บาท
3) 1,000 บาท
4) 1,100 บาท
Arithmetic
43. ผลบวกของเลขเรียงกันจาก 1 ถึง 45 เป็นเท่าไร
1) 1,035
2) 1,025
3) 1,000
Arithmetic
1. \( 6(y+1)= \)
Algebra
20. What is the percent composition of aluminum hydroxide \( -\mathrm{Al}(\mathrm{OH})_{3} \) ?
Chemistry
40. ข้อสอบชุดหนึ่งมีทั้งหมด 4 วิชา วิชาละ 50 ข้อ รวม 200 ข้อ ใช้เวลาในการทำข้อสอบ 3 ชั่วโมง ในข้อสอบชุดนั้นมี
ข้อสอบคณิตศาสตร์ 50 ข้อ ให้เวลาในการทำ 2 เท่าของข้อสอบอื่น ๆจะต้องใช้เวลากี่นาทีในการทำข้อสอบวิชาคณิตศาส
1) 26 นาที
2) 60 นาที
Arithmetic
1. \( 6(y+-1)=6 y-6 \)
Algebra
(9) \( \frac{4 m-9 n}{16 m^{2}}-\frac{9 n^{2}+1}{4 m-3 n} \)
Algebra
EXERCISE 1
1.1 Use the diagram alongside to find the length OP.
1.2 Now write down the value of:
1.2.1 \( \sin \theta \)
1.2.2 \( 61 \cos ^{2} \theta+1 \)
\( 1.2 .3 \tan \left(180^{\circ}-\theta\right) \)
2 If \( 7 \sin \theta+4=0 \) and \( \cos \theta>0 \) find, without a calculator, the value of
\( 2.1 \quad 1-49 \cos ^{2} \theta \)
\( 2.2 \cos \theta \cdot \tan \theta \)
3 If \( \cos \mathrm{A}=\frac{5}{6} \) and \( \mathrm{A}+\mathrm{B}=90^{\circ} \), use a sketch to find the value of \( \frac{\tan \mathrm{A} \cdot \tan \mathrm{B} \cdot \sin \mathrm{A}}{\cos \mathrm{B}} \)
4 Prove the following identities:
\( 4.1 \quad \cos ^{2} x+\sin x \cdot \cos x \cdot \tan x=1 \)
\( 4.2 \quad \frac{1-\tan ^{2} \theta}{1+\tan ^{2} \theta}=2 \cos ^{2} \theta-1 \)
Trigonometry
39. ถ้าวัตถุทรงสี่เหลี่ยมมุมฉาก มีด้านกว้างเพิ่มขึ้น \( 10 \% \) ด้านยาวเพิ่มขึ้น \( 10 \% \) แต่ส่วนสูงลดลง \( 20 \% \) แล้วปริมาตรขอ
วัตถุทรงสี่เหลี่ยมมุมฉากจะสอดคล้องกับข้อใด
1) ลดลง \( 20 \% \)
2) เพิ่มขึ้น \( 2.3 \% \)
3) ลดลง \( 3.2 \% \)
4) เพิ่มขึ้น \( 3.2 \% \)
Geometry
TODAY YESTERDAY
AM - IS - ARE
learn
WAS - WERE
1. 1 \( \qquad \)
2- Jane \( \qquad \)
3. We \( \qquad \) bored.
4. My friends \( \qquad \) tired.
5. My cousin \( \qquad \) ten.
6. Jack and I \( \qquad \) friends.
7. It \( \qquad \) hat and sunny.
8. My car \( \qquad \) old
9.1 \( \qquad \) in the car.
10. You \( \qquad \) very tall.
1.1 \( \qquad \) at home.
2. Jane \( \qquad \) hangry
3. We \( \qquad \) bored
4. My friends \( \qquad \) lired.
5. My cousin \( \qquad \) ten
6- Jack and I \( \qquad \) friends.
7. 11 \( \qquad \) hot and sunny.
8- My car \( \qquad \) old
9. 1 \( \qquad \) in the car.
\( 10 . \mathrm{You} \) \( \qquad \) very tall.
English
38. ขายสินค้า 2 ชิ้นไปราคาชิ้นละ 9,999 บาท ซึ่งชิ้นแรกได้กำไร \( 10 \% \) ส่วนชิ้นที่สองขาดทุน \( 10 \% \) ถ้าขายไปทั้งสองชิ้น
แล้วได้กำไรหรือขาดทุนกี่บาท
1) เท่าทุน
2) กำไร 222 บาท
3) ขาดทุน 202 บาท
4) ขาดทุน 222 บาท
Arithmetic
12:53
4G
Messenger
docs.google.com
เรียบร้อย
จงเลือกคำตอบที่ถูกต้องที่สุด
ข้อใดคือความหมายของสื่อสิ่งพิมพ์ *
ก. ไปรษณียภัณฑ์มีข้อความรูปภาพ
ข. มีการชักนำให้รู้จักกัน
ค. ใช้เครื่องจักรกดตัวหนังสือลงบนวัตถุ
ง. การทำข้อมูลและภาพลงบนวัตถุหรือ กระดาษ
ข้อใดคือความสำคัญของสื่อสิ่งพิมพ์ *
ก. นำไปใช้ให้เกิดประโยชน์ด้านการสื่อสาร
ข. นำไปใช้ให้เกิดความราบรื่นในการทำงาน
ค. นำไปใช้ให้ในการเผยแพร่ข้อมูล สารสนเทศ
ง. ถูกทุกข้อที่กล่าวมา
ประเภทของสื่อสิ่งพิมพ์มีกี่ประเภท *
Social Sciences
A survey shows that about \( 60 \% \) (i.e., 0.6 ) of all students know the HelpYourMath YouTube channel in a
college. Suppose that we randomly select 17 students from the college, please solve the following problems
and round your answers to 4 decimal places.
a. What is the probability that exactly 5 of them know HelpYourMath YouTube Channel?
b. What is the probability that at least 5 of them know HelpYourMath YouTube Channel?
c. What is the probability that at most 5 of them know HelpYourMath YouTube Channel?
d. What is the probability that more than 5 of them know HelpYourMath YouTube Channel?
e. What is the probability that less than 5 of them know HelpYourMath YouTube Channel?
Probability
37. ก ขายของชิ้นหนึ่งให้ ข กำไร \( 1 \% \) ต่อมา ข ขายต่อให้ ค ขาดทุน \( 2 \% \) จากนั้น ค ขายต่อให้ ง ขาดทุน \( 1 \% \) และสุดท้าย
ขายต่อให้ จ กำไร \( 2 \% \) จงหาว่า ถ้า ก ขายให้ จ โดยตรงในราคาที่เท่ากับที่ จ ซื้อจาก ง แล้ว ก จะได้กำไรหรือขาดทุนเท่าใด
Arithmetic
Вариант 1
1.(1б) Найти координаты середины отрезка AB , если \( \mathrm{A}(6 ;-7) \), В \( (4 ; 5) \).
2. (1б) Точка O - середина отрезка АС. Найди координаты точки A , если \( \mathrm{C}(4 ;-3) \), а
\( \mathrm{O}(2 ; 4) \).
3. (16)Найти расстояние между точками M и N , если \( \mathrm{M}(8 ;-7) \), а \( \mathrm{N}(11 ;-3) \).
4. (16) Определить по уравнению окружности \( (x-3)^{2}+(y-5)^{2}=25 \) координаты её центра
и радиус.Начертить эту окружность.
5. (16) Найти координаты точек пересечения прямых \( 4 x-2 y=0 \) и - \( x+2 y=12 \).
6. (2б) Составить уравнение окружности с центром в точке \( \mathrm{O}(-2 ; 1) \), проходящей через
точку Т \( (2 ;-6) \).
Geometry
36. ถังใบหนึ่งมีน้ำอยู่ \( \frac{4}{5} \) ของถัง หลังจากใช้น้ำไป \( \frac{2}{5} \) ของที่มีอยู่ ปรากฎว่ามีน้ำเหลืออยู่ในถัง 216 ลิตร ถังน้ำนี้จุได้กี่ลิตร
1) 360 ลิตร
2) 400 ลิตร
3) 450 ลิตร
4) 540 ลิตร
Arithmetic
Sara bought 620 crayons that
came in packs of 20 . How many
packs of crayons did Sara buy?
Arithmetic
Question 1
Given the number of trials and the probability of success, determine the probability indicated:
\( n=13, p=0.8 \), find \( P(8 \) successes)
\( P(8 \) successes \( )=\square \)
(round to the nearest thousandth)
Suhmit Oifection?
Probability
Analyze this conic section to answer the questions below.
\( x^{2}=16(y-6) \)
B. This conic section has a vertex at \( (2,4) \).
C. This conic section has vertices at \( (21,0) \) and \( (2,0) \).
D. This conic section has vertices at \( (4,0) \) and \( (-4,0) \).
What is the value of c for this conic section? Select the correct choice below and fill in any answer boxes in your
choice.
(Simplify your answer. Type an exact answer, using radicals as needed.)
Determine the focus or foci for the conic section.
A. The foci for this conic section are at \( (-\sqrt{21}, 0) \) and \( (\sqrt{21}, 0) \).
B. The focus for this conic section is at \( (0, \sqrt{21}) \).
O. The focus for this conic section is at \( (0,10) \).
O D. The foci for this conic section are at \( (4,0) \) and \( (21,0) \).
Geometry
Put a decimal point to the right of each whole number and then divide. Check each answer.
\[
\begin{array}{r}
75 \\
\times 4 . \longdiv { 3 0 . 0 } \\
-28 \\
\hline 20 \\
-20 \\
\hline 0
\end{array}
\]
\( . 2 \longdiv { 3 5 5 } \)
\[
\begin{array}{r}
184 \\
. 5 \longdiv { 9 2 }
\end{array}
\]
Arithmetic
1
2
3
4
5
6
7
8
9
TIME REMAINING
41:29
Dion is performing a hypothesis test in which the population mean is 92 and the standard deviation is 2 . His sample size is 7 with a mean of 93.5 . Which of the following correctly depicts the \( z \)-statistic for this data?
0.28
0.36
1.98
2.63
Statistics
In order to start a small business; a student takes out a simple interest loan for \( \$ 3000 \) for 3 months at a rate of \( 8.75 \% \).
a. How much interest must the student pay?
b. Find the future value of the loan.
a. The amount of interest is \( \$ 65.63 \).
(Round to the nearest cent as needed.)
b. The future value of the loan is \( \$ 3065.63 \).
(Round to the nearest cent as needed.)
Arithmetic
35. เลข 6 จำนวนเรียงกัน รวมกันได้ผลลัพธ์เท่ากับ 165 จงหาเลขที่มีค่ามากที่สุดใน 6 จำนวนนั้น
1) 28
2) 29
3) 30
4) 31
Arithmetic
The principal \( P \) is borrowed at simple interest rate \( r \) for a period of time \( t \). Find the loan's future value, \( A \), or the total amount due at time \( t \).
\( P=\$ 26,000, r=7.5 \%, t=5 \) years
The future value is \( \$ 35,750 \).
(Simplify your answer. Type an integer or a decimal.)
Arithmetic
1 2 4 TMEREMANING
David wants to complete a hypothesis test with the least amount of probability for error. If he sets the significance level to
\( 1 \% \), assuming his sample is truly random, what else could he adjust in the test in order to reduce error?
He could change the population mean.
He could increase the sample size.
He could change the population standard deviation.
He could decrease the sample size.
Statistics
29. El prisma pentagonal que se muestra tiene un
volumen de \( 4950 \mathrm{~cm}^{3} \).
¿Cuánto mide cada uno de los lados de la base
del prisma?
A) 49.5 cm
B) 20 cm
C) 12 cm
D) 3 cm
Geometry
QUESTION 1
1.1 Given: \( \mathrm{S}_{n}=\frac{a\left(r^{n}-1\right)}{r-1} \)
1.1 .1 Write \( S_{n} \) in expanded form
1.1 .2 Which term in 1.1 .1 is affected by the number of terms in ti
Consider \( r^{n} \) (write answer in scientific notation form where necessary
1.2 CASE \( 1: r>1 \)
1.2 .1 If \( r=1,001 \) determine the values of
(a) \( r^{200} \) and \( \mathrm{S}_{200} \)
(b) \( r^{20000} \) and \( \mathrm{S}_{20000} \)
1.2 .2 Determine \( r^{200} \) and \( \mathrm{S}_{200} \) if:
(a) \( r=\frac{5}{2} \)
(b) \( r=3 \)
1.2 .3 Make a conjecture with regard to \( r^{n} \) and \( S_{n} \) as \( n \rightarrow \infty \)
Pre Calculus
Analyze this conic section to answer the questions below.
\( x^{2}=16(y-6) \)
A. (Type an ordered pair.)
B. The answer is undefined.
What are the values of a and b for this conic section? Select the correct choice below and fill in any answer boxes
in your choice.
B. and b does not have a value not have a value and \( \mathrm{b}- \)
C. The answer is undefined.
Determine the vertex or vertices for the conic section.
A. This conic section has a vertex at \( (0,6) \).
B. This conic section has a vertex at \( (2,1) \).
C. This conic section has vertices at \( (21,0) \) and \( (2,0) \).
D. This conic section has vertices at \( (4,0) \) and \( (-4,0) \).
Geometry
19. What is the percent composition of a compound which consists of 107.95 g of oxygen, 6.82 g of
hydrogen and 135.23 g of calcium?
Chemistry
Shayna has owned her principal residence for more than a year thot used
for business). What is the lowest possible tax rate she could be taxed on a
gain on sale of the home?
0\% = this is the lowest ordinary income tax rate
\( \mathbf{0 \%} \) - this is the lowest long-term capital gains tax rate
Whatever rate is her ordinary marginal income tax rate
Economics
INVESTIGATING INFINITE GEOMETRIC SERIES
RESOURCES: CALCULATOR, A4 PAPER.
WHAT IS THE SUM OF AN INFINITE GEOMETRIC SERIES?
QUESTION 1
\begin{tabular}{lll|}1.1 & Given: \( S_{n}=\frac{a\left(r^{n}-1\right)}{r-1} \) \\ 1.1 .1 & Write \( S_{n} \) in expanded form \\ 1.1.2 Which term in 1.1.1 is affected by the number of terms in the series? \\ Consider \( r^{n} \) (write answer in scientific notation form where necessary) \end{tabular}
Pre Calculus
ถูกต้อง
1) มีโอกาสได้ลูกแก้วสีขาว
2) ได้ลูกแก้วสีฮมพูแน่นอน
3) ไม่มีโอกาสได้ลูกแก้วสีฟ้า
4) อาจจะได้ลูกแก้วสีชมพูหรือสีฟ้า
Probability
Analyze this conic section to answer the questions below.
\( x^{2}=16(y-6) \)
Parabola
Ellipse
Hyperbola
Where is the center of this conic section? Select the correct choice below and fill in any answer boxes in your
choice.
A. Type an ordered pair.)
What are the values of a and b for this conic section? Select the correct choice below and fill in any answer boxes
in your choice.
A. a = and b does not have a value
B. a does not have a value anlibo =
Geometry
he principal \( P \) is borrowed at sirmple interest rate \( r \) for a period of time \( t \). Find the loan's future value, \( A \) or the total amount due at time \( t \)
\[
P=\$ 76000 t=75 \%, t=5 \text { years }
\]
The future value is \( \$ 35.750 \)
(Simplify your answer. Type an imteger of a decimal)
Arithmetic
Центральная клумба в городском парке имеет
орму круга. На границе клумбы установили
коративный забор, длина которого равна
9,66 м. Найди площадь клумбы. Ответ дай в
адратных метрах. Число \( \pi \) прими равным 3,14 .
Geometry
33. รูปสี่เหลี่ยมผืนผ้ารูปหนึ่งมีด้านยาวยาวกว่าด้านกว้าง 35 นิ้ว ถ้าความยาวรอบรูปของรูปสี่เหลี่ยมผืนผ้ารูปนี้มีค่าเท่ากับ
150 นิ้ว พื้นที่ของรูปสี่เหลี่ยมผืนผ้ารูปนี้มีค่าเท่ากับกี่ตารางนิ้ว
1) 100 ตารางบิ้า
Geometry
A study investigated the job satisfaction of teachers allowed to choose supplementary cैurriculum for their classes versus
teachers who were assigned all curricular resources for use in their classes. On average, when surveyed regarding job
satisfaction, teachers give a score of 3.3 out of 5 with a standard deviation of 0.6 . When the authors of the study
interviewed 40 teachers who supplemented with their own materials, they found 3.5 to be the mean. The authors wanted
to know if the group of teachers that could choose supplementary curriculum had a higher level of job satisfaction. They
used a significance level of \( 1 \% \). Which of the following statements is valid based on the results of the test?
The data shows that teachers allowed to choose supplementary curriculum for classes are more satisfied with their
jobs.
The data shows that teachers who were assigned all curricular resources for classes are more satisfied with their
jobs.
The data shows that there is no difference in job satisfaction between the two groups of teachers.
The data shows that the authors cannot make a determination either way with this data.
Statistics
The principal \( P \) is borrowed at simple interest rate \( r \) for a period of time \( t \). Find the loan's future value, \( A \), or the total amount due at time \( t \)
\( P=\$ 4000, r=4.5 \%, t=9 \) months
The future value is \( \$ \square \).
(Simplify your answer. Type an integer or a decimal.)
Arithmetic
32. ถ้าขณะนี้นาฬิกาบอกเวลา \( 8: 30 \) น. หลังจากนั้นเข็มวินาทีหมุนรอบหน้าปัดนาฬิกาไป 3,300 รอบ แล้วนาฬิกาบอก
เวลาใด
1) 11 นาฬิกา
2) 12 นาพิกา
3) 13 นาฬิกา
4) 14 นาฬิกา
Arithmetic
8. (3б) Составить уравнение прямой, которая параллельна прямой \( y=4 x-5 \) и проходи
через центр окружности \( x^{2}-8 x+y^{2}+10 y-40=0 \).
Geometry
Which of the following reactions correctly describes the precipitation of
solid zinc chloride from aqueous ions in a solution?
Choose 1 answer:
(A) \( \mathrm{Zn}^{2+}+2 \mathrm{Cl}^{-}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{ZnCl}_{2} \)
(B) \( \mathrm{Zn}^{2+}+2 \mathrm{Cl}^{-}+2 \mathrm{H}^{+}+\mathrm{O}^{2-} \rightarrow \mathrm{ZnCl}_{2} \)
(C) \( \mathrm{Zn}^{2+}+2 \mathrm{Cl}^{-}+2 \mathrm{H}^{+}+\mathrm{O}^{2-} \rightarrow \mathrm{ZnCl}_{2}+\mathrm{H}_{2} \mathrm{O} \)
(D) \( \mathrm{Zn}^{2+}+2 \mathrm{Cl}^{-} \rightarrow \mathrm{ZnCl}_{2} \)
Chemistry
1 TIMEREMAINING
\( 46: 43 \)
Julian is a manager at a clothing store for teens. He is analyzing the order for next seas̈on. Data for the previous 10
years suggests that teens are willing to spend an average of \( \$ 75 \) for a pair of designer jeans with a standard deviation of
\( \$ 5 \). However, Julian thinks the average may have changed due to a recession. He finds that the last three seasons of
data show that teens spent an average of \( \$ 68 \) on a pair of jeans. Therefore, he performed a hypothesis test to see if the
recent average is the same. Julian used a significance level of \( 5 \% \) to perform the test. Which of the following statements
is valid based on the results?
Julian's data shows that the recent seasons' average jean price is not \( \$ 75 \).
Julian's data shows that he should order fewer jeans than before.
Julian's data shows that the recent seasons' average jean price is still \( \$ 75 \).
Julian's data is inconclusive, so he should order the same number of jeans.
Statistics
f. \( 5-4 x-x^{2}>0 \)
Algebra
\begin{tabular}{l|l|} Fred's shelves hold 40 books \\ each. How many shelves will Fred \\ need if Fred has 365 books and \\ why? \end{tabular}
Arithmetic
1 TIMEREMAINING
\( 49: 59 \)
A researcher collated data on Americans' leisure time activities. She found the mean nümber of hours spent watching
television each weekday to be 2.7 hours with a standard deviation of 0.2 hours. Jonathan believes that his football team
buddies watch less television than the average American. He gathered data from 40 football teammates and found the
mean to be 2.3. Which of the following are the correct null and alternate hypotheses?
\( \mathrm{H}_{0}: \mu=2.7 ; \mathrm{H}_{\mathrm{a}}: \mu<2.7 \)
\( \mathrm{H}_{0}: \mu \neq 2.7 ; \mathrm{H}_{\mathrm{a}}: \mu=2.3 \)
\( \mathrm{H}_{0}: \mu=2.7 ; \mathrm{H}_{\mathrm{a}}: \mu \neq 2.7 \)
\( \mathrm{H}_{0}: \mu<2.7 ; \mathrm{H}_{\mathrm{a}}: \mu \geq 2.3 \)
Statistics
29. ร้านค้าแห่งหนึ่งซื้อโทรทัศน์มาราคา 12,000 บาท ร้านค้าแห่งนี้ต้องตั้งราคาขายโทรทัศน์เครื่องนี้กี่บาท จึงจะได้กำไร
\( 12 \% \)
1) 12,112 บาท
2) 13,440 บาท
3) 14,550 บาท
4) 15,760 บาท
Arithmetic
Suppose that a balanced chemical reaction contains water molecules (in
different numbers) on both sides of the reaction arrow. Which of the
following correctly describes how the reaction can be reduced?
Choose 1 answer:
(A) Water can be removed from one side.
(B) Water is a catalyst, and can thus be removed completely from
both sides.
(C) The reaction can be simplified so that there is only one water
molecule on at least one side. Water can be removed
Chemistry
When butane \( \left(\mathrm{C}_{4} \mathrm{H}_{10}\right) \) is burnt in air, the resulting reaction liberates
carbon dioxide and water. Which of the following describes this reaction?
Choose 1 answer:
(A) \( 2 \mathrm{C}_{4} \mathrm{H}_{10}+4 \mathrm{O}_{2} \rightarrow 2 \mathrm{CO}_{2}+4 \mathrm{H}_{2} \mathrm{O} \)
(B) \( \mathrm{C}_{4} \mathrm{H}_{10}+5 \mathrm{O}_{2} \rightarrow 6 \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O} \)
(C) \( 2 \mathrm{C}_{4} \mathrm{H}_{10}+13 \mathrm{O}_{2} \rightarrow 8 \mathrm{CO}_{2}+10 \mathrm{H}_{2} \mathrm{O} \)
(D) \( \mathrm{C}_{4} \mathrm{H}_{10}+5 \mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}+5 \mathrm{H}_{2} \mathrm{O} \)
Chemistry
In some types of alcohol digéstion, alcohol \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH} \) is broken down int
vinegar, \( \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2} \) and water. Which of the following describes this
reaction?
Choose 1 answer:
(A) \( 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{O}_{2} \rightarrow 2 \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}+\mathrm{H}_{2} \mathrm{O} \)
(B) \( 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+2 \mathrm{O}_{2} \rightarrow \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}+\mathrm{H}_{2} \mathrm{O} \)
(C) \( 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+2 \mathrm{O}_{2} \rightarrow \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}+3 \mathrm{H}_{2} \mathrm{O} \)
(D) \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{O}_{2} \rightarrow \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}+\mathrm{H}_{2} \mathrm{O} \)
Chemistry
When an antacid tablet is used, calcium hydroxide interacts with
hydrochloric acid in the stomach to form inert calcium chloride, \( \mathrm{CaCl}_{2} \)
and water. Which of the following describes this reaction?
Choose 1 answer:
(A) \( \mathrm{Ca}(\mathrm{OH})_{2}+3 \mathrm{HCl} \rightarrow \mathrm{CaCl}_{2}+3 \mathrm{H}_{2} \mathrm{O} \)
(B) \( \mathrm{Ca}(\mathrm{OH})_{2}+2 \mathrm{HCl} \rightarrow \mathrm{CaCl}_{2}+2 \mathrm{H}_{2} \mathrm{O} \)
(C) \( 2 \mathrm{Ca}(\mathrm{OH})_{2}+\mathrm{HCl} \rightarrow 2 \mathrm{CaCl}_{2}+2 \mathrm{H}_{2} \mathrm{O} \)
(D) \( \mathrm{Ca}(\mathrm{OH})_{2}+\mathrm{HCl} \rightarrow \mathrm{CaCl}_{2}+\mathrm{H}_{2} \mathrm{O} \)
Chemistry
Uranium hexafluoride can leech into the air by bonding to water vapor to
form \( \mathrm{UO}_{2} \mathrm{~F}_{2} \) and HF , both of which are toxic to humans. Which of the
following describes this reaction?
Choose 1 answer:
(A) \( \mathrm{UF}_{6}+2 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{UO}_{2} \mathrm{~F}_{2}+4 \mathrm{HF} \)
(B) \( \mathrm{UF}_{6}+\mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{UO}_{2} \mathrm{~F}_{2}+2 \mathrm{HF} \)
(C) \( \mathrm{UF}_{6}+4 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{UO}_{2} \mathrm{~F}_{2}+\mathrm{HF} \)
(D) \( \mathrm{UF}_{6}+2 \mathrm{H}_{2} \mathrm{O} \rightarrow 3 \mathrm{UO}_{2} \mathrm{~F}_{2}+\mathrm{HF} \)
Chemistry
Find the domain of the function and write your answer in set notation.
\( \begin{array}{lll}\text { i } f(t)=\frac{1}{t^{2}-81} & \text { ii } f(a)=\sqrt[4]{a^{2}-a-6} & \text { iii } f(b)=\sqrt[3]{b^{2}-b-6} \\ \text { iv } f(x)=\ln \left(x^{3}+x^{2}-2 x\right) & \text { v } f(z)=\sqrt{z}+\sqrt{10-z} & \text { vi } f(x)=\ln \left(4-x^{2}\right)\end{array} \)
Pre Algebra
LT 3: I can develop quadratic revenue and profit functions and determine the maximum or
minimum of the quadratic function.
CJ Real Estate Co. is building a new housing development. They predict the demand equation for its
houses is given by \( q=-0.04 p+14,250 \), where \( q \) is the number of houses they can build if the price
\( \$ p \) per house. At what price should it sell its houses to get the largest revenue?
Algebra
точку Т \( (2 ;-6) \).
7. (2б) Составить уравнение прямой, которая проходит через точку \( M(2 ;-3) \) и
параллельна прямой \( y=-3 x+1 \).
8. (3б) Составить уравнение прямой, которая параллельна прямой \( y=4 x-5 \) и прохє
через центр окружности \( x^{2}-8 x+y^{2}+1 \)
Geometry
In the presence of insufficient oxygen for aerobic respiration, the body will
perform anaerobic respiration, in which glucose, \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \), is converted to
lactic acid, \( \mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{3} \). Which of the following describes this reaction?
Choose 1 answer:
(A) \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow \mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{3}+3 \mathrm{CO}_{2} \)
(B) \( 2 \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow 2 \mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{3}+6 \mathrm{CO}_{2} \)
(C) \( 2 \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow 2 \mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{3}+2 \mathrm{H}_{2} \mathrm{O} \)
(D) \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow 2 \mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{3} \)
Biology
2. Para elegir el presidente de un colegio, se realizó una votación en la cual
registró un total de 560 votos. Miguel obtuvo 75 votos menos que Camilo y
votos más que Leonardo. ¿Cuántos votos obtuvo cada candidato?
Algebra
The College Board states that the average math SAT score is 514 with a standard deviation of 117 . Colleen gathered data
from 50 students in her graduating class and found the average score to be 523 . She thinks that her class's math SAT
score is different from the average. Which of the following are the correct null hypothesis and alternate hypothesis?
\( \mathrm{H}_{0}: \mu=514 ; \mathrm{H}_{\mathrm{a}}: \mu>514 \)
\( \mathrm{H}_{0}: \mu=514 ; \mathrm{H}_{\mathrm{a}}: \mu=523 \)
\( \mathrm{H}_{0}: \mu=514 ; \mathrm{H}_{\mathrm{a}}: \mu=514 \)
\( \mathrm{H}_{0}: \mu=514 ; \mathrm{H}_{\mathrm{a}}: \mu=523 \)
Statistics
\( n \) the absence of oxygen, plánts can perform respiration by converting
theose, \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \) to ethanol, \( \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH} \), and carbon dioxide. Which of
the following describes this reaction?
choose 1 answer:
(A) \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+3 \mathrm{CO}_{2} \)
(B) \( 2 \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow 6 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{CO}_{2} \)
(C) \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+2 \mathrm{CO}_{2} \)
(D) \( \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+\mathrm{CO}_{2} \)
Chemistry
There are 510 students at a
school. If each classroom holds
30 students, how many
classrooms are needed at the
school?
Arithmetic
6. Kevin is baking cookies. Each batch of
cookies uses \( \frac{1}{8} \) pound of butter. Kevin has
\( \frac{11}{8} \) pounds of butter. How many batches
of cookies can Kevin make? Explain by
writing \( \frac{11}{8} \) as a multiple of \( \frac{1}{8} \).
Arithmetic
Google Play Best Apps of 2024
Best for Personal Growth & Best Hidden Gem