How to do it and I don't know how to do it

How to solve a circle of a radius of 12

A washer and dryer cost $828 combined. The washer cost $78 more than the dryer. What is the cost of the dryer?

The equation f = v + at represents the final velocity of an object, f, with an initial velocity, v, and an acceleration rate, a, over time, t. Which is an equivalent equation solved for t? t = t = t = a (f - v) t = v (f - a)

solve the following system of equations. Enter the x-coordinate of the solution. Round answer to the nearest tenth. 5x+2y=22 - 2x+6y=3

Zero is a rational number true or false

Simplify the expression completely. (-3c-2d2e101-3)

What are the solutions of each equation? a. x² - 36=0

Solve by writing and solving a matrix equation. Show all your work. x - 2y = 2 { 3x - 5y = 9

A traffic light is needed at each intersection. How many traffic lights are needed if there are 6 streets in the town.

Steven purchases a bowl. The diameter of the bowl is 14 cm. What is the circumference of the bowl?