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anzhelika [568]
2 years ago
6

Find the length of the side of the square

Mathematics
1 answer:
Tomtit [17]2 years ago
7 0
(6x-1)=(4x+6)

x=3.5

6(3.5)-1=4(3.5)+6

20=20

The length of the side of the square is 20cm
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goblinko [34]

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Step-by-step explanation:

6x + 3y = -15

y = -2x - 5

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Since 0 = 0 is a true statement, both equations of this system are the same equation and represent a single line on the coordinate plane.

We need to check each choice in just one equation.

Let's use the second equation.

y = -2x - 5

A.

(2, 7)

7 = -2(2) - 5

7 = -4 - 5

7 = -9   False

Not a solution

B.

(5, 0)

0 = -2(5) - 5

0 = -10 - 5

0 = -15     False

Not a solution

C.

(-3, 1)

1 = -2(-3) - 5

1 = 6 - 5

1 = 1   True

Solution

D.

-13 = -2(4) - 5

-13 = -8 - 5

-13 = -13    True

Solution

Answer: Only choices C and D are solutions

7 0
3 years ago
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