gus2006santos
29.08.2020 •
Mathematics
Noah borrowed $17 from his mother. He then paid back $8 of the amount he owed.
Complete the statements to represent the change in the amount of money that
Noah's mother has.
Click the arrows to choose an answer from each menu.
The change in the amount of money that Noah's mother
has can be represented by the
expression Choose... The expression can be simplified to Choose... which
shows that Noah still owes Choose... to his mother.
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Ответ:
Let's begin with the formula for the perimeter of a rectangle: P = 2W + 2L, where W is the width and L is the length. L = 50 feet.
We are told that P = 140 feet, and now know that this equals 2W + 2(50 feet).
All that's left to do now is to solve for W. To simplify matters, divide this entire equation 140 ft = 2W + 100 by 2: 70 ft = W + 50 ft. Isolate W by subtracting 50 ft from both sides: 20 ft = W. This is the width we wanted.