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°.
Answer:
39/80
Step-by-step explanation:
Answer:
Totally Rational
Step-by-step explanation:
-16/-2 would give you 8 which is a rational number
<em><u>I hope this helps, dont hesitate to ask for any question.Mark me as brainliest is appreciated.Tq!!</u></em>
Answer:
3/4-7/9+2/3=0.63
Step-by-step explanation:
.........