During a tour of a gold mine, visitors travel down a vertical mine shaft in an elevator. The speed of the elevator can be expressed
as -5 feet per second. What is the position of the elevator with
respect to the surface of the earth after 10 seconds?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

What is the missing statement in step 4? ? rts ? ? vtu and ? rtu ? ? vts ? rts ? ? rvs and ? rtu ? ? stv ? vrs ? ? vru and ? usr ? ? usv ? vur ? ? vus and ? uvs ? ? sru

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?