When you square each side of an equation, is the resulting equation equivalent to the original?

You know 1mi = 1,760 yd. How many yd is 10 mi?

What is the value of b2 - 4ac for the following equation? 2x 2 - 2x - 1 = 0

A boy wants to swim from one dock of a pond to another dock. About how far will he have to swim?

Maggie is participating in her school reading challenge. She reads 40 books in 6 months. If 26 of the books are fiction, what percent of the books that she read are non-fiction.

2. Find the surface area and volume of a storage cube measuring 5 feet on each side.

Two out of six computers in a lab have problems with hard drives. If three computers are selected at random for inspection, what is the probability that none of them has hard drive problems

What is square minus?

In which number does one digit 6 have a value if 1/100 of the other digit 6? A. 66.04 B. 46.60 C. 46.06 D. 40.66

Sue has four DVD's and Terry has six DVD's. They put all their DVD's together and sold them for $10 for two DVD's. How much money will they earn if they sell all of their DVD's?

At the movie theatre, child admission is $5.70 and adult admission is $9.80 . On Thursday, twice as many adult tickets as child tickets were sold, for a total sales of $556.60 . How many child tickets were sold that day?