If x-y=10 and x+y=20 what is the answer for x^2-y^2?

Jerry started doing sit-ups every day. The first day he did 15 sit-ups. Everyday after that he did 2 more sit-ups than he had done the previous day. Today jerry did 33 sit-ups.

What is 4 feet, 1 inch minus 2 feet, 11 inches? A. 1 ft, 9 in B. 2 ft, 2 in C. 1 ft, 2 in D. 2 ft, 4 in

4 less than the number product of a number and 8 is 44. what it the number

What is the final amount if 1930 is increased by 5% followed by a further 15% increase? Give your answer rounded to 2 DP.

If all the dimensions of a cube are are multipied by 5 the surface area of the cube will change by a factor of ten. True or false

What is 1.2x=6? And can You show me the work?

Kristin has 36 purple beads, 12 clear beads, and 24 yellow beads. She wants to put and equal number of beads on string to make necklaces, with only one color of beads on each string. How many beads can Kristin put on each string?

What does 9/11 * 4/15 equal?

How many square feet does 3/4 of paint cover

How many milliliters are equal to 0.399195 L