Charmaine's penny bank is 2/3 full. After she removes 160 pennies, it is 4/9 full. How many pennies can Charmaine's bank hold?

Solve equation by finding square roots. 49x^2 - 16 = - 7

Brad and Angelina can mow their yard together with two lawn mowers in 30 min. When brad works alone it takes him 45 min. How long would it take Angelina to mow lawn by herself

164.38 in expanded form

How are average I. Q. s related to normal distributions?

Round 13608 to its greatest place

Ben made a four digit number with the numbers 7,4,3,9. The number was smaller than 4 and bigger than 1. The 7 cannot go in the tenths place, and 9 must go to any place value to the right of the seven. What is the number?

89,999 rounded to the nearest hundred thousand

Write an expression that is equivalent to (4x+11) + 7x

6x^2-5xy-6y^2 factor

The digit in my hundreds place and the digit in my ones place are the same. The digit in my tens place is 1. The digit in my ones place is 5 more than 2. What number am I