How many pennies does it take to have $2?

In the 99-story house there is an elevator with two buttons only. If you click on the first button, you will go 7 floors up, if you click on the second one then you go 9 floors down. How can you get from the first floor to the 72nd?

What number should be added to both side of the equation to complete the square? X^2-10x=7

find three consecutive even integers such that the sum of the smallest number and twice the middle number is 20 more than the largest number

Twenty seven minus 4 times a number is equal to 3 times the number minus 29

Lizy bought 4 bags of apples. Each bag had the same number of apples. Her mom gave her 8 more apples. Now Liz has 36 apples. How many apple were in each bag

Simplify (-80/-20) -4 4 -40 40

Suppose that the following relations are defined on the set A = {1, 2, 3, 4}. R1={ (2,2), (2,3), (2,4), (3,2), (3,3), (3,4) }, R2={ (1,1), (1,2), (2,1), (2,2), (3,3), (4,4) }, R3={ (2,4), (4,2) }, R4={ (1,2), (2,3), (3,4) }, R5=

The cost to place a collect call was $1.50for the minute plus $1.00 for each additional minute. what was the cost of a 5-minute phone call

Which set does not contain - 3? A) the set of all real numbers B) the set of all integers C) the set of all whole numbers D) the set of all rational numbers

How do you work this problem? 5 - 2x = 0