Answer:
the width is 46 and the length is 99
Step-by-step explanation:
perimeter = 290 yards
length =2w+7
width =w
perimeter = 2w + 2l =290
2w+ 2(2w+7) =290
2w+4w+14= 290
6w = 276
w= 46
1 acre = 43560 square feet
43560 = 484 * X
X=43560/484 = 90
the width = 90 feet
D) 132°
8x+12=5x+57 subtract 5x from both sides
3x+12=57 subtract 12 from both sides
3x= 45 divide by 3 from both sides
X=15
5(15)+57=132°
A
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