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makvit [3.9K]
3 years ago
15

The dimensions of a square are altered so that one dimension is increased by 7 feet, while the other is decreased by 2 feet. The

are of the resulting rectangle is 90ft^2. Find the original area of the square.
Mathematics
2 answers:
dangina [55]3 years ago
7 0

Answer:

64 ft^2

Step-by-step explanation:

(x+7)(x-2)=90

x^2-2x+7x-14=90

x^2+5x-104=0

factor

(x+13)(x-8)=0

x=-13

x=8 ft original square side

area=8x8=64

Sophie [7]3 years ago
5 0

Answer:

64 ft^2

Step-by-step explanation:

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Pavlova-9 [17]

Answer:

D

Step-by-step explanation:

I think I'm not sure about that

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3 years ago
HELP
kati45 [8]

Slope: 1/5

Y-intercept: 0

Equation: Y= 5x

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Nookie1986 [14]

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=================================

90.000.000 { \times 10}^{9}

=================================

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2 years ago
Read 2 more answers
What's the answer to this question??​
laiz [17]

Answer:

b=8

Step-by-step explanation:

b=√(10²-6²)=√(100-36)=√64=8

7 0
3 years ago
I'm not really looking for an exact answer, I'm more so looking for an explanation on how to do this.
marshall27 [118]

I would have each block be 1/6 of a yard

You could technically have any value you want, but for me 1/6 is easiest because 1/2 and 1/3 will scale up to this like so

1/2 = (1/2)*(3/3) = 3/6

1/3 = (1/3)*(2/2) = 2/6

The diagram below might help if you're still stuck on why I picked 1/6.

5 0
3 years ago
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