If the circumference of a circle is doubled, the diameter of the circle
a) remains the same
b) increases by 2
c) is multiplied by 4
d) is doubled

The isosceles triangle has two sides of equal length, a, that sre longer than the length of the base ,b. the equation 2a+b=15.7 can be used to find the sides length. if one of the longer sides is 6.3 centimeters what is the length of the base

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.