1. Mark and Bill have a combined weight of 170
pounds. Mark weighs 40 pounds less than twice Bill's
weight. How much does each boy weigh?
Equation:
Bill weighspounds.
Mark weighspounds.

Solution:

Let the weight of Bill be "x"

Let the weight of mark be "y"

Given that,

Mark and Bill have a combined weight of 170  pounds

Therefore,

x + y = 170 eqn 1

Mark weighs 40 pounds less than twice Bill's  weight

y = 2x - 40 eqn 2

Substitute eqn 2 in eqn 1

x + 2x - 40 = 170

3x = 170 + 40

3x = 210

x = 70

Substitute x = 70 in eqn 2

y = 2(70) - 40

y = 140 - 40

y = 100

Thus weight of Bill is 70 pounds and weight of mark is 100 pounds

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.