When multiplied by itself, which number is equal to 12,345,678,987,654,321?

5a (-3b) (-2a^2b^3) what is the answer to this question?

The student council wanted to know students' opinions about the music at school dances. They asked all the girls in a dance class to fill out a survey. Was the survey collected in a biased manner? Explain how you decided.

A tortoise is walking in the desert. It walks for 11.2 meters at a speed of 7 meters per minute. For how many minutes does it walk?

Is a unit fraction always in simplest form?

How might you know when to refer a client because of limited competence?

Write a number with the digit 8 in the tens place

A 4-foot-wide walkway surrounds a 10-foot square wading pool. What is the perimeter of the outside of the walkway?

Find the difference. (-ab+8a-5) - (-8ab-4)

Daryl hit a home run 8 out of 32 times. if he is at bat 224 times how many home runs will he hit

The sales tax for an item was $12.90 and it cost $430 before tax. Find the sales tax rate. Write your answer as a percentage.