Answer:
4. m of angle2 = 42
m of angle 1 = 88
m of angle 3 = 113
Step-by-step explanation:
Hello your correct answer would be 95.703
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Answer:

Step-by-step explanation:
We know that A and B are complementary angles. So, they must add up to 90°. As an equation:

Since we know their equations, substitute:

Solve for x. Combine like terms on the left:

Subtract 9 from both sides:

Divide both sides by 9:

So, the value of x is 9.
We want to find A. So, let's use the equation for A:

Substitute 9 for x:

Add:

So, the measure of A is 17°.
D. (xy2 + 3z14)(x2y4 – 3xy2z14 + 9z28