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Marina86 [1]
3 years ago
14

The solution to 5x - 7 = 21?

Mathematics
2 answers:
NeX [460]3 years ago
5 0

Answer:5.6

Step-by-step explanation:5x=21+7

5x=28

x=28/5

x=5.6

lapo4ka [179]3 years ago
4 0

Answer:

x = 5.6

Step-by-step explanation:

5x - 7 = 21

5x = 28

x = 5.6

Can I geet brainliest

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Step-by-step explanation:

The given suares are when joined in the way as shown in picture their sides form a right agnled triangle.

Area of square 1 and perimeter of square 2 will be used to calculate the sides of the triangle.

So,

<u>Area of square 1: 81 square inches</u>

s^2 = A\\s^2 = 81\\\sqrt{s^2} = \sqrt{81}\\s = 9

<u>Perimeter of square 2: 48 inches</u>

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Pythagoras theorem can be used to find the length.

(H)^2 = (P)^2+(B)^2\\H^2 = (9)^2+(12)^2\\H^2 = 81+144\\H^2 = 225\\\sqrt{H^2} = \sqrt{225}\\H = 15

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The length of side of largest square is 15 inches

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Combine like terms.

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3 years ago
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Step-by-step explanation:

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Therefore,

The unit of it's area will be 9 feet².

6 0
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