Astandard piano has 88 keys. there are 52 white keys and 36 black keys. what is the ratio of white keys to black keys? a. 9 to 22 b. 13 to 22 c. 18 to 26 d. 13 to 9

The diagram shows a 7cm by 6cm rectangle based pyramid. all the diagonal sides - ta, tb, tc and td are length 10cm. m is midpoint of rectangular base. work out height mt to 1 decimal place

25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition

How many ordered pairs of positive integers satisfy xy=32?