Question
upstudy study bank question image url

Solve for \( X \) in the equation below. Round your answer to the nearest hundredth. Do not round any intermediate computations. \[ 7^{-9 x}=12 \]

Ask by Wang Parsons. in the United States
Mar 11,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

\( x \approx -0.14 \)

Solution

Sign in to Unlock Answers for Free!

A Learning Platform Trusted by Millions of Real Students and Teachers.

star-icon Unlock

Answered by UpStudy AI and reviewed by a Professional Tutor

Bonus Knowledge

To solve for \( X \) in the equation \( 7^{-9 x} = 12 \), we first take the logarithm of both sides: \[ \log(7^{-9x}) = \log(12) \] Using the property of logarithms that allows us to move the exponent in front, we have: \[ -9x \log(7) = \log(12) \] Now, we can isolate \( x \): \[ x = -\frac{\log(12)}{9 \log(7)} \] Now let's compute this using logarithm values: 1. Calculate \( \log(12) \) and \( \log(7) \) using a calculator. - \( \log(12) \approx 1.07918 \) - \( \log(7) \approx 0.84510 \) Substituting these values back into the equation gives: \[ x \approx -\frac{1.07918}{9 \times 0.84510} \] Calculating the denominator: \[ 9 \times 0.84510 \approx 7.60690 \] Now we can find \( x \): \[ x \approx -\frac{1.07918}{7.60690} \approx -0.14102 \] Finally, rounding to the nearest hundredth, we get: \[ \boxed{-0.14} \]

Try Premium now!
Try Premium and ask Thoth AI unlimited math questions now!
Maybe later Go Premium
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy