4/7 of the students in a classroom are girls. If there are nine boys in the class, how many total students are there?

14

28

21

12

Sean counts by from 15 to 35? Which number does Sean count

A coin is flipped and a six-diced die is rolled. What is the probability that the coin lands heads and the die shows four or more? (Hint: define A to be the event 'coin lands heads' and B to be the event 'die shows four or more'.

I am a multiple of 70. I am between 500 and 1000. My ten digit is odd. Who could i be

The length of a rectangle is six times it's width. If the area is 216 inches squared, find its perimeter

Find the most general antiderivative of the function. (Check your answer by differentiation. Use C for the constant of the antiderivative. Remember to use absolute values where appropriate.) f (x) = 2 5 - 3 x, x > 0

If the base of a square pyramid is 9 centimeters, and it has a volume of 324 cubic centimeters, what is the height of the pyramid?

Write the product using exponents. 3⋅3⋅3⋅y⋅y⋅y

If p + 9 = 25 and p = q, then q + 9 = 25.

If a bag contains 400 coins, and 33 1 over 2 are nickels, how many nickels are there what percent of the coins are not nickels

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