Alex thinks of a number. he adds 18 then divides it by 2. he gets the same answer that he would have if he had multiplied the original number by 5. calculate the mystery number.

What does (-54x^9/y^4) ^2/3 equal?

A shadow 15 yards long is cast by a fir tree that is 8 yards tall. If a lookout tower close by casts a shadow 45 yards long, how tall is the lookout tower?

Write 30 : 84 as a ratio in simplest form. A. 1/27 B. 3/7 C. 5/14 D. 1/3

Can Ray CD be called DC also

Canada has a population that is about one tenth of a large is the United States and Canada's population is about 32 million about how many people live in the United States explain the number of zeros in your answer

Four times a number is 21 more than the number

Which statement about residual plots is not true? A. if the residuals are randomly distributed, the model is probably reasonable B. The sum of the residuals is 0 C. The vertical axis shows residuals D.

Marcus is working at a local pizzeria where he makes $12.50 per hour and is also working at the university bookstore where he makes $9.50 per hour.

The net of a square pyramid is shown below. What are the possible areas for a single face in this net? Check all that apply. A net with a square base with sides lengths of 5 meters, and 4 triangles with heights of 6 meters.

Solve the equation for the indicated variable: (F-7) / g=h For F