Full-time ph. d. students receive an average of $12,837 per year with a standard deviation of $3000. find the probability that the average salary of a group of 16 randomly selected ph. d. students is more than $13,000.

Convert 8 7/10 to a fractional notation

On Monday, Jason ran x miles. On Tuesday, he ran 5 fewer miles than on Monday. Which expression represents the total number of miles Jason ran over these two days? -5x x - 5 2x-5 2 (x-5)

Bob has a dog who weighs 12 pounds. His cat weighs 2/3 as much as the dog. How many pounds does his cat weigh?

Algebraic expression for : 5 years younger than Sabrina

Examine the linear equation. 4x - 9y = 36 Select the appropriate steps to write an equivalent equation in slope-intercept form. Step 1: Step 2:

The sum of 6 consecutive integers is 393. What is the third number in this sequence?

Tomas earned $38.25 for the cleaning the garage. He was paid $4.25 per hour. Write and solve an equation to find how many hours it took him to cleen the garage.

Which would be the "best" or quickest first step to solve the system using substitution? x - 2y = - 2 - 3+y=2 Solve (rearrange) the 1st equation for X. Solve (rearrange) the 1st equation for Y. Solve (rearrange) the 2nd equation for X.

Write an explicit formula for the sequence - 4, 1, 6, 11, ... an = - 4 + 5 (n+1) an = - 4 + 5 (n-1) an = - 4 + (n-1) an = - 4 + 5n

How many days are in four consecutive years