Angle a and angle b are complementary angles. the measure of ∠a is 42°.

which equation represents this situation with x representing the measure of ∠b ?

a. 90+x=42

b. 90+42=x

c. 42+x=90

d. 42−x=90

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

`if you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain. ''.

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8