The formula for the circumference of a circle is c=πr, where r is the radius and c is the circumference. the equation solved for r is r=c/2π

find the radius of a circle that has a circumference of 16π
a)r=4
b)r=8
c)r=12
d)r=16

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.

Carly stated, “all pairs of rectangles are dilations.” which pair of rectangles would prove that carly’s statement is incorrect?