Use the method based on prime-power representations to find the greatest common divisor and least common multiple of the following pair of numbers. r-3 .7'·11' and s=3"-72 . 112 The GCD is
The LCM is

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

$12. that is my answer.

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.