All of the girls in Ms. Smith's class have either brown hair or blonde hair. There are 15 girls in the class and 5 of them have blonde hair. What is the ratio of blonde-haired girls to brown-haired girls?

2x+5y=35 x=-10-15y. what value of x satisfies the system of equations?

The product of the place values of two 2's in 428721 is (A) 4 (B) 40000 (C) 400000 (D) 40000000

Whats the answer to a - 4 = 8 + a

Dennis has 14 skittles. If Dennis gave equal numbers of skittles to his 8 friends and then ate what was left, how many skittles did each person eat?

In this equation, is x positive, negative, or zero? x + 5 = - 8

Andre is solving the equation 4 (x+3/2) = 7. He says," I can subtract three over two from each side to get 4X equals 11 over two and then divide by four to get X equals 11/8 Cameron says I think you made a mistake

Discuss how the t-test for correlated groups and the t-test for single samples are alike and different.

How many times more is the digit 5 in the number 4521 than the digit 5 in the number 2615

Jacob has 17 yards of fabric. He uses 1 third of it to make a Cape. How many yards of fabric does Jacob use for the cape

What amount of a 75% acid solution must be mixed with a 25% solution to produce 500 mL of a 60% solution?