Factorize a^2-b^2 Hence find the exact value of 2557^2-2547^2

How many ways are there to choose two queens from a standard 52-card deck? How many ways are there to choose three cards from a standard 52? How many five-card hands (drawn from a standard 52-card deck) contain exactly two queens?

If AC = 12, DC = 7, DE = 5, and the perimeter of ΔABC is 30, what is the perimeter of ΔDEC? A. 12.5 B. 14.0 C. 14.8 D. 17.5

Several students and adult chaperones are going on a field trip to the theater. Each student ticket cost $2 and each adult ticket cost $4. The total cost for the trip is $144. There are 4 times as many students as adults going on the trip.

Ted and Lane share a 24 ounce bucket of clay. By the end of the week, Ted has used 5/8 of the bucket, and Lane has used 1/4 of the bucket of clay. How many ounces are left in the bucket?

What does y=8 (x+1) - 12 equal?

Find all the the real square roots of 144

2x - y = - 1 3x + 5y = 18 What are the order pairs to these equations.

Simplifying rational expressions h-2 divided by h squared+3h-10

A department store is having a 25% off sale on all winter coats. If you have a coupon for an additional 20% off of any item, how much will a $150.00 winter coat cost?

Susie has a bag with 8 hair pins, 6 pencils, 2 snacks, and 5 books. What is the ratio of books to pencils? a. 6/5 b. 8/6 c. 5/8 d. 5/6