Justin has 23 marbles to give to 5 of his friends. He gives each friend the same number of marbles. He keeps only the remainder. How many marbles does Justin keep?

A five-digth number has a3 in the hundreds place, a 7 in the greatest place-value position, a 9 in the ones place, an 8 in the thousands place, and 6 in the tens place. what is the number? use the four-step plan.

What is the correct way to read the decimal 0.003

How long will it take for the light from the sun to reach earth? express answer in seconds and minutes. the speed of light is approximately 3.0x10^8 m/s

Find a number that is 30 less than it's square

Evaluate each expression if r = - 7, s = 4, and t = - 8. 3st a. -84 c. -96 b. 96 d. 168

A circle with the radius of 3cm sits inside a circle with a radius of 7cm What is the area of the shaded region? (Round your answer to the nearest hundredth

Roberto says that the opposite of a certain integer is - 5. cindy concludes that the opposite of an integer is always negative. explain cindy's error

Match the expression with its name. 3x + 7 A. linear monomial B. linear binomial C. cubic binomial D. quadratic monomial

Use compatible numbers to find two estimates: 42:396

A student bought 20 pencils for school if he sharpened 4 of the pencils before school what is his ratio of unsharpened pencils to sharpened to pencils