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vampirchik [111]
3 years ago
6

Solve. -13-8a-4a=-3

Mathematics
2 answers:
bezimeni [28]3 years ago
8 0

-13-8a-4a=-3+13

-8a-4a=10

-12a=10

10/-12=a

a= -0.83

vredina [299]3 years ago
6 0

Answer:

A = -0.83  or  a = -5/6

Step-by-step explanation:

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For this case we have the following system of equations:

y = x ^ 2 + 7x + 12\\y = 2x + 8

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x ^ 2 + 7x + 12 = 2x + 8\\x ^ 2 + 7x-2x + 12-8 = 0\\x ^ 2 + 5x + 4 = 0

We must find the solutions, for this we factor. We look for two numbers that, when multiplied, result in 4 and when added, result in 5. These numbers are 4 and 1:

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ANswer:

(x_ {1}, y_ {1}): (- 4,0)\\(x_ {2}, y_ {2}): (- 1,6)

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