Pregunta
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Which expression is equivalent to \( 12-7 \) \( \begin{array}{l}\text { (4) } 12 \div 7 \\ \text { Kamaria lives on a ranch with } 4 \text { horses. She feeds the horses a } \\ \text { total of } 10 \text { pounds of oats. Each horse gets the same amount of } \\ \text { oats. How many pounds of oats does each horse get? Use a } \\ \text { visual model and an equation to support your answer. } \\ \text { Which situations can be represented by } \frac{25}{9} 7 \text { Select all that apply. } \\ \text { (A) Platon cuts } 25 \text { yards of paper equally to make } 9 \text { banners. } \\ \text { (B) Selena gives away } 9 \text { stickers from a sheet of } 25 \text { stickers. } \\ \text { (C) Keenan invites } 25 \text { children and } 9 \text { adults to a party. } \\ \text { (D) Mercedes makes } 9 \text { rows with } 25 \text { buttons each. } \\ \text { (E) Felipe makes } 9 \text { equal servings from a } 25 \text {-ounce bagg of peanuts. }\end{array} \) (0)

Ask by Ford Carlson. in the United States
Feb 27,2025

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The expression \( 12 - 7 \) equals \( 5 \). The situations represented by \( \frac{25}{9} \) are: - (A) Platon cutting 25 yards of paper into 9 equal banners. - (E) Felipe making 9 equal servings from a 25-ounce bag of peanuts.

Solución

Let's break down the problem step by step. ### Step 1: Evaluate the expression \( 12 - 7 \) The expression \( 12 - 7 \) simplifies to: \[ 12 - 7 = 5 \] ### Step 2: Analyze the options for equivalent expressions The options provided are: 1. \( 12 \div 7 \) Since \( 12 - 7 = 5 \), we need to check if any of the options represent the same value as \( 5 \). ### Step 3: Check the expression \( 12 \div 7 \) Calculating \( 12 \div 7 \): \[ 12 \div 7 \approx 1.7142857142857142 \] This is not equal to \( 5 \). ### Step 4: Solve the word problem about Kamaria and the horses Kamaria feeds a total of \( 10 \) pounds of oats to \( 4 \) horses. To find out how many pounds of oats each horse gets, we can set up the equation: \[ \text{Oats per horse} = \frac{\text{Total oats}}{\text{Number of horses}} = \frac{10}{4} \] Calculating this gives: \[ \frac{10}{4} = 2.5 \] So, each horse gets \( 2.5 \) pounds of oats. ### Step 5: Analyze the situations represented by \( \frac{25}{9} \) We need to determine which situations can be represented by \( \frac{25}{9} \). - **(A)** Platon cuts \( 25 \) yards of paper equally to make \( 9 \) banners. - This can be represented as \( \frac{25}{9} \) yards per banner. - **(B)** Selena gives away \( 9 \) stickers from a sheet of \( 25 \) stickers. - This does not represent \( \frac{25}{9} \) as it does not involve division of \( 25 \) by \( 9 \). - **(C)** Keenan invites \( 25 \) children and \( 9 \) adults to a party. - This does not represent \( \frac{25}{9} \) as it is not a division situation. - **(D)** Mercedes makes \( 9 \) rows with \( 25 \) buttons each. - This does not represent \( \frac{25}{9} \) as it is not a division situation. - **(E)** Felipe makes \( 9 \) equal servings from a \( 25 \)-ounce bag of peanuts. - This can be represented as \( \frac{25}{9} \) ounces per serving. ### Conclusion The situations that can be represented by \( \frac{25}{9} \) are: - (A) Platon cuts \( 25 \) yards of paper equally to make \( 9 \) banners. - (E) Felipe makes \( 9 \) equal servings from a \( 25 \)-ounce bag of peanuts. Thus, the final answers are: - The expression equivalent to \( 12 - 7 \) is \( 5 \). - The situations represented by \( \frac{25}{9} \) are (A) and (E).

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Mind Expander

Did you know that subtraction is as ancient as mathematics itself? The earliest recorded use of subtraction dates back to ancient Babylon around 2000 BCE! They used a counting system involving clay tablets where they meticulously tallied up sums and differences—talk about math pioneers! If you're trying to visualize how Kamaria divides oats among her horses, drawing a simple model can help! Imagine a circle representing the total 10 pounds, then splitting it into 4 equal sections. Each section would highlight how much each horse gets, making it easier to see that they each receive 2.5 pounds. Equations are great, but visuals really bring the concept to life!

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