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melisa1 [442]
4 years ago
11

I need help on NUMBER 8.

Mathematics
1 answer:
valkas [14]4 years ago
3 0
Explanation: I know that these two angles are supplementary, so I know by adding them, they equal 180 degrees.

Math: x+30+(3x+10)=180
4x+40=180
4x=140
X=35

Substitute your X values back in.
X+30
35+30
=65

3x+10
3(35)+10
=115
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An expression has numbers, variables, and mathematical operations. The equation that must be true so that x²+mx+m is a perfect square trinomial is x²+mx+m=(x+2)².

<h3>What is an Expression?</h3>

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

A perfect square trinomial is in the form (a+b)²=a²+b²+2ab. If we compare the perfect square trinomial x²+mx+m, we will get that the value of m should be such that it satisfies the equation m^2+2m. Since there is only one value that can satisfy this equation that is 2.

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Learn more about Expression:

brainly.com/question/13947055

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