Jiang counted that he'd thrown 90 pitches in a baseball game. He had actually thrown 94 pitches. Calculate the percent error and round to the nearest percent.

I’m stuck on this i don’t understand.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.