Answer these questions.
45% of 40 is 18% of what number?

What is the number 321,000,000 in scientific notation? also what is the number? ?

What is the difference between the equations of a vertical and a horizontal line?

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?