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goblinko [34]
3 years ago
10

Esther starts at one corner of a square field and walks 90 feet along one side to another corner of the field. She turns 90° and

walks 70 feet, and then walks straight back to where she started. What is the area of the part of the field she walked around?
a. 3150 ft²
b. 4900 ft²
c. 6300 ft²
d. 8100 ft²
Mathematics
1 answer:
erma4kov [3.2K]3 years ago
3 0
The three sides make a right triangle and you know the base (90) and the height (70)

A = 1/2 bh  or 1/2 x (70)x (90)=   3150 ft²
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nika2105 [10]

Firstly, since these two fractions have the same denominator, add the numerators up: \frac{-6}{4}

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5 0
3 years ago
elise is changing the dimensions of her garden. the length is 20 feet longer than its width. if she decreases this length by 8 f
vitfil [10]
Let x be the initial width, then the initial length is x+20.
<span>If Elise decreases this length by 8 feet, she will get the new length  x+20-8=x+12.
</span>
 If Elise increases the width by 10 feet, <span>she will get the new width x+10.
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</span><span>The new perimeter will be x+12+x+12+x+10+x+10=4x+44=172, 4x=172-44, 4x=128,  x=128÷4, x=32.
</span><span>
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Step-by-step explanation:

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