How do you know when to rationalize the denominator

What is - 23=x-23? I have a problem with this question

Solve the following system of equations graphically. y - 4 = 0 2x - y - 2 = 0 What is the solution set? { (-3, - 4) } { (-3, 4) } { (3, 4) }

Abdul planned a pool to be 24-feet long. To fit in his yard, however, the pool can only be 20-feet long. Abdul's ratio and work is below. Where did he make an error?

How do I find the area of a half circle?

You can respect an odd integer with the expression 2n+1, where no is any integer. Write and solve an equation to find three consecutive odd integers that have the sum of 63.

62 is 112% of what number? find the base and round to the nearest hundredth

The sum of two numbers is - 1. when twice the first number in four times the second number are added, it equals - 10. what are the two numbers?

You have 48 grams of a radioactive kind of xenon. If it's half life is 9 hours, how much will be left after 18 hours?

7 lb 12 oz Or 124 oz greater or equal

For the particular problem raised in the introduction, assume that the total bill is $44. to answer the question "how should the bill be split?" we will create a linear equation.