The Times of sarah's first swim lengths are 27 seconds, 35 seconds, and 31 seconds. in how many seconds must length four be completed so the mean is 30 seconds

SAT scores were originally scales so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. What would be the z-score corresponding to a student who gets a section score of 680? a.

What algebraic property is demonstrated in the equation below? 5 + 3 (2x - 7) = 5 + 6x - 21

Simplify: - 3 (y 2) 2 - 5 6y

Three numbers added together total 180. The second number is twice the first, and the third is three times the first. Find each number.

Write10:15 pm in 24 hour time

Natalie has a choice of three breads, five choices of meats, and four choices of cheese to make a sandwich. how many different sandwiches can she make?

What is the area of this triangle 12 inches and 3 inches

Write as an expression and simplify: the tripled product of 6a and b^2

What does n equals when 10 = - 8+n divided by 4

What is 1.5 times 2/3 equal?