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.

What is x-7=-16 and witch property of equality did you use to solve x

Combine like terms to simplify the expression. 5 x + 4 + 2 x + 5

It costs $5 per hour to park, use the expression to represent the cost of parking for h hours

Write the rule for the arithmetic sequence if a7=11 and d=3

A cube has a surface area of 200 square inches. Which choice is closest to the length of an edge of the cube?

Write the distribution of 7*6=

Five out of seven households have cable tv. If 38,500 households in a certain city have a tv, how many do not have cable tv?

Oliver uses the greatest common factor and distributive property to rewrite this sum: 64+96

The sale price of a jacket is 77% of its original price. The jacket originally costs $87. Which expression gives the most reasonable estimate of the sale price? One-half (90) One-half (100) Three-fourths (90) Three-fourths (100)

If a snowball melts so that its surface area decreases at a rate of 7 cm2/min, find the rate at which the diameter decreases when the diameter is 10 cm.