Express in scientific notation 0.21

Evaluate 2s+4t for s=3 and t = -2

A wide receiver catches a ball and begins to run for the endzone following a path defined by (x-5, y-50) = t (0,10) A defensive player chases the receiver as soon as he starts running following a path defined by (x-10, y-54) = t (-0.9,-10.72)

A supplier delivers an order for 20 electric toothbrushes to a store. by accident, three of the electric toothbrushes are defective. what is the probability that the first two electric toothbrushes sold will be returned because they are defective?

Whats 0.02 in word form?

A recent catalog tennis balls was 4.25 for a can containing three balls. The shipping charge per order was 1.00.

Solve for y. 18y - 6 = - 30

Multiply. (3x + 2) (3x - 2) A. x² + 12x - 4 B. 9x² - 12x - 4 c. 9x - 4 D. 9x² + 4

Mr and mrs turner ate 3/4 of a pizza. They want to split the remaining part equally between their two sons how much of the pizza will each son recive

A 16-mb flash drive was sold on sale for $18.50. If this sales price was 81% of the original price, what was the original price?

6,4,7,2 what is the average of 5