Shelly biked 21 miles in 4 hours. what is shelly average speed in miles per hour

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

Brainlest answer can you find the area and circumference of a circle given the radius or diameter? if its yes or no explain why

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?