7.5%of what number is 15

9x/b + 7x/a = c, b=0, a=0, b = - 9/7 a

Solve the following, round the solution to the nearest tenth. 57.7r + 23.23 = 2.57

Find three sets of values for x and y to make x mile/y minutes = 4 mile/32min a proportion. Explain how you found the values

Explain why a square is always a rectangle but a rectangle is not always a square.

The Sunrise Cafe gets tea bags in boxes of l, 000. If the cafe charges $1.75 for each cup of tea, and each cup of tea gets one tea bag, how much money does the cafe receive if they use a whole box of 1,000 teabags? Solve with an equation.

Factor and simplify: 4a^2c^2 - (a^2-b^2+c^2) ^2

A car braked with a constant deceleration of 64 ft/s2, producing skid marks measuring 50 ft before coming to a stop. How fast was the car traveling when the brakes were first applied?

Which physical property would be best to use to distinguish hematite from the other minerals in the table? A. crystal system B. streak C. hardness D. luster

Mr. and Mrs. Rose have six old railroad ties that they would like to use to border two different triangular flower beds.

Okay so sorry I'm not very smart when it comes to math but how do I write 2.3181818181818 (it's a repeating decimal) as a mixed number?