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Eva8 [605]
2 years ago
6

Solve the system of linear equations by substitution.

Mathematics
2 answers:
IgorC [24]2 years ago
8 0
I believe the solution is (-2,-8)
loris [4]2 years ago
5 0
The solution to the system is (-2,-8)
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Step-by-step explanation:


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The perimeter of a triangle is 61 in. The shortest side is 8 in. less than the longest side. The middle side is 19 in. less than
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Step-by-step explanation:

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2 years ago
Use the discriminate to determine the number and the nature of the solutions of the giving equation.
PolarNik [594]

Answer:

Since b^2 -4ac = 256 we have 2 real distinct root roots

Step-by-step explanation:

4x^2+12x=7

We need to subtract 7 to get it in the proper form

4x^2+12x-7=7-7

4x^2+12x-7=0

The discriminant is b^2 -4ac

when the equation is ax^2 +bx+c

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144 +112

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If b^2 -4ac > 0 we have 2 real distinct roots

If b^2 -4ac = 0 we have one real root

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Since b^2 -4ac = 256 we have 2 real distinct root roots

7 0
3 years ago
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