3 years ago

Fórmula para sacar el área de un circulo

Mathematics

1 answer:

saul85 [17]3 years ago

8 0

<span>Fórmula para sacar el área de un circulo:

$A = \pi r^2$
</span>

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Y=4x and 3x+y=-21. Substitute

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value of x= -3 and value of y = -12

Solution set is (-3,-12)

Step-by-step explanation:

We need to solve the system of equations using substitution

The system of equations are:

$y=4x\\3x+y=-21$

Solving:

Let

$y=4x\,\,eq(1)\\3x+y=-21\,\,eq(2)$

Solving:

Putting value of y from equation 1 into equation 2

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So, value of x = -3

Now, putting value of x into equation 1 and find value of y

$y=4x\\y=4(-3)\\y=-12$

Value of y = -12

So, value of x= -3 and value of y = -12

Solution set is (-3,-12)

Keywords: System of equations

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