21 is 71%, of what number

Y + 4x = 8 and 5x + 2y = 13

Is the gcf of a pair of numbers ever equal to one of the numbers

Distribute -3 (4x + 5)

What times 2 equels 15

Which of the following is a multiple of 2? A. 847 B. 75 C. 2,461 D. 1,000

A researcher conducts a hypothesis test on a population proportion. Her null and alternative hypothesis are H0 : p = 0.4 and Ha : p < 0.4. The test statistic and p-value for the test are z = - 3.01 and p-value = 0.0013.

How do I solve (-2-6i) (1 + i)

I'm a election 4713 people voted candidate B received 2 thirds of the votes. How many votes did candidate b receive

A car can travel 476 miles on 14 gallons of gas. Write an equation relating to the distance d to the number of gallons g. How many gallons of gas first this car need to travel 578 miles?

What is the volume of a cereal box that is 2 inches thick, 12 inches high and 10 inches wide? A) 24 cubic inches B) 72 cubic inches C) 120 cubic inches D) 240 cubic inches