Is 23/40 a rational or irrational number? I'm not sure how to solve this one.

7 over 20 as a decimal

Lowest common multiple of 21 and 4 show all the numbers

What can be concluded about a cylinder and a cone with the same height and radius measures? Check all that apply The cone has the greater volume, The cone and cylinder have the same base area The cylinder can fit inside the cone The cone and

Mr. Harris has some money in his wallet. He pays the babysitter $12 an hour for 4 hours of babysitting. His wife gives him $10 and he puts the money in his wallet. By how much does the amount in his wallet change?

Rationalize the denominator and simplify. 2 sqrt x - 3 sqrt y / sqrt x + sqrt y

What is this answer 2000 (0.085)

Which of the following is a unit rate?

7 Katalin drove 250 miles on her vacation. She drove an average of 1.3 times faster on the second 125 miles of her trip than she did on the first 125 miles of her trip.

Give me a definition on percentage

Simplify the question 18x - 6x + 2x