What is the amount of change? Show your work

a. 85% of 210

b. 125% of 38

M is directly proportional to r squared when r=2 m=14 work out the value of r when m = 224

Verify (Prove whether true or false) 1/sec^2k=sin^2k*cos^2k+cos^4k

Mrs. Lawson brought 15 bags of candy to give away for prizes. her third cllass wonf 3 3/4 bags of candy. her second class won 2 3/8 bags of candy. her third class won 2 5/8 of candy. how much candy does mrs. Lawson have left.

Translating word problems to algebraic expressions: One number exceeds another by 24. The sum of the numbers is 58. What are the numbers?

How many times bigger than 1/2 inch is 8 1/2 inches?

Melissa's father is 194 cm tall. He is 79 cm taller than Melissa. How tall is Melissa?

Solve the system y = 3x + 2 and 3y = 9x + 6 by using graph paper or graphing technology. What is the solution to the system? A. (3, 2) B. No Solutions C. (9, 2) D. Infinite Solutions

What is 240,000,591 divides by 176

Solve 3x2 18x 15 = 0 by completing the square. a. 3 (x 3) 2 = 6; x = - 3 square root 2, x = - 3 - square root 2 b. 3 (x 9) 2 = 12; x = - 11, x = - 7 c. 3 (x 3) 2 = 12; x = - 5, x = - 1 d.

A pillow that usually cost $18 is marked down 25% what is the markdown and what's the new price