3 years ago

What is the solution to the system of equations below? 5 x + 2y = -3 3x + 6y = 6

1 answer:

3 0

Eqn (1)*3: 15x + 6y = -9 -> Eqn (3)
Eqn (3) - Eqn (2): 12x = -15
x = -5/4 = -1 1/4
Eqn (2): -15/4 + 6y = 6
6y = 9 3/4
y = 1 5/8

x = -1 1/4
y= 1 5/8

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aleksley [76]

Step-by-step explanation:

$2x + 2(3x - 1) = 3(x + 1) \\ 2x + 6x - 2 = 3x + 3 \\ 8x - 2 = 3x + 3 \\ 8x - 3x = 3 + 2 \\ 5x = 5 \\ x = 1inch$

$perimeter \: of \: rectangle \\ 2x + 2(3x - 1) \\ = 2(1) + 2(3(1) - 1) \\ = 2 + 2(2) \\ = 6 \: inches$

$perimeter \: of \: \: triangle \\ 3(x + 1) \\ = 3(1 + 1) \\ = 3(2) \\ = 6 \: inches$

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Serhud [2]

I think that the answer is 5 to 2.49 or 5:2.49

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katrin2010 [14]

I don’t understand your question

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Zina [86]

Try this thing which you can find on internet

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QveST [7]

Answer:

The radius of the circle is 3.5 inches.

Step-by-step explanation:

The radius is half the diameter:R= 1/2 d

Substitute the value of d (7 inches) in the formula to find r:

r= 1/2 x 7 in

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