How do i find 20*50 using mental math

Find the domain of the following function:

A student finds the slope of a line between (14,1) and (18,17). she writes 1-17/18-14 what mistake did she make?

After watching an episode of Trading Spaces, you decide it would be a great idea to put ribbon around the edge of each of the 6 chairs at your kitchen table. The seat of each chair is a square with 18 inch sides.

Is - 2/7 a rational or irrational number

There are two different maps of Ohio. The scale on the first map is 1 cm to 10 km. The distance from Cleveland to Cincinnati is 40 cm. The scale on the second map is 1 cm to 50 km. What is the distance from Cleveland to Cincinnati on the second map?

Find the greatest common factor of 15x 2 y 3 and - 18x 3 yz.

m/6=21 What is the inverse operation and properties of equality to isolate the variable.

What is 9+10 x 2x4?!

There are 5 muffins 1 out of 6 muffins have nuts. how many muffins were served in all?

Solve for the time, t, when I = $2,322, P = $9,000, and r = 4.3%. Use the formula I = Prt.