On a test that has a normal distribution, a score of 25 falls one standard deviation above the mean, and a score of 15 falls one standard deviation below the mean. Determine the mean of this test.

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

If a is a nonzero real number then the reciprocal of a is

Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?