How do u do mental math for 53 x 7

At a local community college, five statistics classes are randomly selected and all of the students from each class are interviewed. What sampling technique is used? A. convenience B. systematic C. random D. cluster E. stratified

What is 1/4 times 2/4

How can I find the value of a variable to make an equation true instead of false?

Mackenzie want to buy a backpack that cost $50 if the tax rate is 6.5% how much tax will she pay

Which addition problem has a sum thqt is an even number?

Convert 39/5 to a mixed number written in lowest terms

the home teams score exceeded 2 times the visiting teams score by 5 if the visiting teams score is x which expression represents the home teams score

How to solve this equation x-9=-6x+5

Y=5x+21 and y=-7x-15

Two researchers are studying the decline of orangutan populations. In one study, a population of 784 orangutans is expected to decrease at a rate of 25 orangutans per year.