A student ran the 100-m dash in 15.4 s. What was the student's speed in miles per hour?

If 2x^2-5x+7 is subtracted from 4x^2+2x-11, what is the coefficient of x in the result?

9999+8888+777+?=19700

We collected a sample of the prices of new homes. The mean of our sample is $250,000, with a standard deviation of $15,000. Calculate the z-scores of each of the given prices. Determine if the they are usual or unusual.

A bottle pf hand lotion is on sale for $2.25. if this price represents a 50% discount from the original price! what is the original price to the nearest cent?

The formula s=0.04n+2500 gives an employees monthly salary s, in dollars, after selling n dollars in merchandise at an appliance store. a) find the inverse of the function.

Mr. Garcia has driven 60 miles, which is 2/3 of the way to his sister's house. How much farther does he have to drive to get to his sister's house?

Bob guessed there was 560 in they jar but there was actually 620. What percent was Bob's guess incorrect

The tires on Miguel's bicycle have a diameter of 28 inches. How many feet has Miguel traveled when the tires complete 15 revolutions? Use 3.14 for π. Round to the nearest tenth of a foot if necessary. ft

A rectangle is inside a circle with a 5 cm radius. What is the area of the shaded region? Use 3.14 for π . Enter your answer as a decimal in the box. cm²

What's bigger 1/10 or 2/15