Angle a and b are supplementary. angle a has a measure 80 what measure of angle b the measure of angle b is

∠B = 100°

Step-by-step explanation:

Supplementary angles have a sum of 180°, thus

A + B = 180, that is

80 + B = 180 ( subtract 80 from both sides )

B = 100°

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: