Angle A and angle B are supplementary angles. If angle B is 30° more than four times angle A, find
angle A and angle B.

Angle A is 30

Angle B is 150

Step-by-step explanation:

So we have the supplementary angles A and B. In other words:

We are also told that Angle B is 30 more than four times Angle A. In an equation, this is:

We now have a system of equations. Solve by substitution of B into the first equation:

Combine like terms:

Subtract 30:

Divide by 5:

So, Angle A is 30 degrees.

And since the angles are supplementary, this means that Angle B is 180 minus 30 or 150 degrees.

-1/2 +2

step-by-step explanation:

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this