There are 88 Keyes on a piano. some keys are black and some keys are white.

If x represents the number of white keys which expression below represents the number of black keys?

A:X-88

B:X+88

C:88-X

D:88/x

Given a right triangle with legs of 3 cm and 12 cm, which triangle is similar? A) A right triangle with legs of 6 cm and 18 cm A right triangle with legs of 9 cm and 18 cm A right triangle with legs of 6 cm and 24 cm A right triangle with legs of 8

The width of a window if the total area of the square and the semicircle is to be 200 ft squared

Out of 840 discs tested, 38 are defective. Estimate the number of defective discs in a batch of 43,000. about 3,890 discs about 195 discs about 1,945 discs about 19,450 discs

Find each unit rate 1) 78 mil on 3 gal 2) 52.50 in 7 h 3) 416 mi in 8 h

A submarine is driving at a constant rate of 12 feet per second

The area of the base (B) of a triangular pyramid is 28 cm. The perimeter (p) is 20 cm, and the slant height (S) is 5 cm. Determine the pyramid's surface area.

There were 3,905 more hits on the school's website in January than February. February had 9,854 hits. How many hits did the school's website have during both months

1/7 divided by 4. 1/7 divided by 4 1/7 divided by 4 1/7 divided by 4 1/7 divided by 4 1/7 divided by 4 1/7 divided by 4

Joan Sara Sam and Tom each have 4 baseball cards how many baseball cards do they have in all

Adam's Bikes rents bikes for $19 plus $8 per hour. Nicole paid $67 to rent a bike. For how many hours did she rent the bike?