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DianaAmaroxoxo4319
01.10.2019 •
Mathematics
Larry earns $20.25 per hour plus 8% of his sales which of the following equations represents toms earrings e when he works x hours and has a total of y sales in dollars
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Ответ:
4 inch and 7 inch
Step-by-step explanation:
Let the length of the smaller square=l
Since the length of each side of a square is 3 in. more than the length of each side of a smaller square,
Length of the bigger square=l+3
Area of Smaller Square=l²
Area of Larger Square=(l+3)²
The sum of their areas is 65 inch squared
Therefore: l²+(l+3)²=65
l²+(l+3)(l+3)=65
l²+l²+3l+3l+9=65
2l²+6l+9-65=0
2l²+6l-56=0
2l²+14l-8l-56=0
2l(l+7)-8(l+7)=0
(2l-8)(l+7)=0
2l-8=0 or l+7=0
l=4 or -7
l= 4 inch
The length of the larger square is (4 +3) inch =7 inch