Question

I need help with number 5

Answer 1

A

Explanation:

62 +65=127

C+127=180

C=180-127=53°

so x=53°

53-y=11

y=53-11=42

Answer 2

Answer: A

Explanation:

Since ΔCDE and ΔGHI are congruent triangles, they are equal to each other. This means x-y=11. We want to find y, but we first need to find x. We can do that by finding x° on ΔGHI.

We know that the sum of the angles is 180° in a triangle. We are given 2 angles from ΔCDE. We can use those to find x°.

62+65+x=180 [combine like terms]

127+x=180 [subtract 127 on both sides]

x=53

Now that we have x, we can find y by plugging in.

53-y=11 [subtract both sides by 53]

-y=-42 [divide both sides by -1]

y=42