Is (-5,2) a solution to this system of equations? x=-5 y=2x+10

Mathematics

1 answer:

hichkok12 [17]3 years ago

7 0

Answer: No, it's not the solution

Explanation:

Let's plug x = -5 into the second equation

y = 2x+10

y = 2(-5)+10

y = -10+10

y = 0

This shows that (-5,0) is the actual solution, instead of (-5,2)

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icang [17]

Step-by-step explanation:

Let the length be L.

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4 years ago

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Nana76 [90]

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3 years ago

Nx-5= -0.4<br> What is N?

denis-greek [22]

Answer:

$\large\boxed{n=\dfrac{4.6}{x}}$

Step-by-step explanation:

$nx-5=-0.4\qquad\text{add 5 to both sides}\\\\nx-5+5=-0.4+5\\\\nx=4.6\qquad\text{divide both sides by}\ x\neq0\\\\\dfrac{nx}{x}=\dfrac{4.6}{x}\\\\n=\dfrac{4.6}{x}$