How to factorize a²-21ab-100b²

A spinner is divided into 4 equal sections the probability of landing on A is 1/4 Norma spins the spinner 16 times how many times can she expect the spinner to land on A

William has $22 to buy strings for his guitar. Each set of strings costs $4. How many sets of strings can he buy? Do not include units in your answer.

we're doing this reflection thing. and 3 different questions, I have no clue how to do it. 1) reflection across the y-axis, 2) reflection across the x-axis. 3) reflection across y=1.

Solve the equation. x2 - x - 12 = 0 A) x = 4 B) x = - 3 C) x = - 3 or x = 4 D) x = - 4 or x = 3

Find the area to the right of a z score of 2.75 under a standard normal distribution curve

What is 2.358 meter rounded to the nearest tenth

Choose the correct vertex for the following quadratic function. f (x) = x2 - 4x + 3 U (2,-1) B. (-1,2) C., (3,0) D. (0,1)

The amount of sales tax on a new car is directly proportional to the purchase price of the car. Victor bought a new car for $30,000 and paid $1,500 in sales tax. Rita bought a new car from the same dealer and paid $2,375 sales tax.

Solve for x: 5x + 2 = 4x - 9. 7 -7 11 -11

Choose the product. (3x2 + 2x - 3) (x - 1) 3x2 + 3x - 4 3x3 - 5x2 - 5x + 3 3x3 - X2-5x + 3 3x3 + 5x2 - 5x + 3