Martin is 6 years younger than his sister. the sum of their ages is no more than 22 years. what is an inequality that can be used to represent this situation where x represents martins sisters age

What is the volume of this square pyramid?

Aliaa is skating down a ramp. the wheels on her skateboard have diameters of 60 \text{ mm}60 mm60, space, m, m. what is the distance aliaa travels when her skateboard wheels make 202020 revolutions? round your answer to the nearest \text{mm}mmm, m.

Triangle pqr is similar to triangle xyz.what is the perimeter of triangle xyz?