What number is 256% of 21.5

A tunnel under a river is 1.30 km long. (a) at what frequencies can the air in the tunnel resonate? (use n to represent the harmonics and n = 1, 2, 3, ...)

It took Damien 7 hours to mow 4 lawns. How many lawns can he mow in 35 hours (if he mows at a constant rate) ?

What is the following product? V30. V10

If Jk || LM, which of the following statements are true?

If you have an rpo of 0 hours, what does that mean?

Show one way to count from82 to 512

Which of the following best describes the English expression the quotient of nine and the difference of a number and eleven A. x-11/9 B. x/9-11 C. 9/x-11 D. 9/x-11

On a 50-question test, a student answered 5 questions incorrectly. What percent did the student answer correctly? A. 55% B. 45% C. 10% D. 90%

your mom bought 2.5 lbs of Turkey breast from shoprite and paid $8.10 How much was the turkey breast per pound?

Jim's allowance is $1.20 per week. Stan's is 25¢ per day. How long will they have to save, if they save both their allowances together, before they can get a model car set that costs $23.60?