What is the radius of the largest circle that will fit inside a triangle that has two 15-inch sides and an 18-inch side

State if the two triangles are congruent. if they are, state how you know?

Match each inequality to the number line that represents its solution

Grandpa ernie is shrinking! over the past 4 years his height decreased by a total of 2.4 cm.it decreased by the same amount each year. what was the change in grandpa ernie's height each year