Tanya is buying a skateboard for $42.38, a helmet for $17.60, and a set of elbows an nee pads for $12.89. She estimates the total cost to be about $71. Is her estimates higher or lower than her actual cost? Explain

A rectangle has a height of 4w^3 and a width of 5w^2-3w-4 what is the area

Rolling a a number greater than 6 on a number cube labeled 1 through 6

If it takes 471 cm² of plastic to make a 15 ounce bottle how much plastic should it take to surround a similarly shaped 2.5 ounce bottle

There is a cat that eats 1590 mice each day but today it only ate 1321. How many mice were left to eat before he could starve?

The product of two consecutive positive odd integers is 255. what are the integers?

In mrs. romano's math class of 25 students, 8 of the the students play a musical instrument. What percent of the class plays a musical instrument

Edoardo thinks of a number between one and 20 that has exactly 5 factors what number is he thinking of?

Can be expressed as the sum u=v+w, where v satisfies the initial conditions

A box of 100 computer chips contains eight defective chips. suppose we selected a random sample of 10 chips from that box. find the probability that the sample had: a. at least one defective chip b. all defective chips c. nine defective chips d.

What is the answer to this question 2 (3x-5) + 3 (2x+3)