Which question is best modeled with a division expression? How much does it cost to buy 3 and one-half pounds of apples at $2 per pound? How many apples are needed for 2 pies if the recipe uses 3 and one-half apples per pie? How many more apples are needed if a recipe uses 3 and one-half apples and you only have 2 apples? How many apples are in each pie if a total of 3 and one-half apples were used to bake 2 pies?

How many apples are in each pie if a total of 3 and one-half apples were used to bake 2 pies?

Step-by-step explanation:

Use process of Elimination: How do you solve each of these questions and which one uses division?

1. How much does it cost to buy 3 and one-half pounds of apples at $2 per pound? =  3.5 x 2 = $7

2. How many apples are needed for 2 pies if the recipe uses 3 and one-half apples per pie?  = 2 x 3.5 = 7 apples

3. How many more apples are needed if a recipe uses 3 and one-half apples and you only have 2 apples?  = 3.5 - 2 = 1.5 apples

4. How many apples are in each pie if a total of 3 and one-half apples were used to bake 2 pies? = 3.5 divided by 2  =1.75 apples.

Note: Questions 1 and 2 used multiplication, Question 3 used subtraction and it was only question 4 that needed any division at all.

Hope this Helps,

Good Luck

use the power rule  

( a b ) n = a n b n

to distribute the exponent.

apply the product rule to  

3 x 2 y 3 . ( 3 x 2 ) 2 ( y 3 ) 2

apply the product rule to  

3 x 2 . 3 2 ( x 2 ) 2 ( y 3 ) 2

raise  

3

to the power of  

2 . 9 ( x 2 ) 2 ( y 3 ) 2 multiply the exponents in   ( x 2 ) 2

.

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 2 ⋅ 2 ( y 3 ) 2

multiply  

2   by   2 . 9 x 4 ( y 3 ) 2

multiply the exponents in  

( y 3 ) 2 .

apply the power rule and multiply exponents,  

( a m ) n = a m n . 9 x 4 y 3

⋅

2

multiply  

3   by   2 . 9 x 4 y 6

step-by-step explanation:

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.