A standard piano has 88 keys. There are 52 white keys and 36 black keys. What is the ratio of white keys to black keys?

If a ray divides an angle into two complementary angles then the original angle is a right angle

Zack has 3/4 hours to play video games it's takes him 1/12hours to set up the system. Each round of his favorite game takes 1/6hours how many rounds can you pla

45, 10, 48, 19,36, 25, 63, 14, 39 What is the median of the number of fish?

George calculated the distance between (2, 4) and (6, 3) using the distance formula. His work is shown below. 1. d = StartRoot (6 minus 2) squared + (3 minus 4) squared EndRoot. 2. d = StartRoot (4) squared + (negative 1) squared EndRoot. 3.

What is the perimeter of a square with side length 2x-3

Which polygon in the floor plan have four equal sides and four congruent angles?

At the dog show there are 4 times as many boxes as spaniels. if there are a total of 30 dogs how many dogs are spaniels

Which pairs of polygons are congruent?

Eve is going to buy 30 pens from either shop A or shop B. Shop A: pack of 10 pens for £1.90 Shop B: pack of 5 for £1.10 buy 1 pack and get 1 half price. What is the difference in cost for all 30 pens between the two shops?

Simplify (3x2 - 2) + (2x2 - 6x + 3). 5x2 - 6x + 1 5x2 - 6x - 1 x2 - 6x + 1 5x2 - 8x + 3