63% of all people in the United States have at least some college education. If ten people were chosen at random, find the probability that exactly half have some college education.

The measurement of one angle of a right triangle is 34°. what is the measurement of the third angle?

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

Kelly is a salesperson at a shoe store, where she must sell a pre-set number of pairs of shoes each month. at the end of each work day the number of pairs of shoes that she has left to sell that month is given by the equation s=300-15x , where s is the number of pair of shoes kelly still needs to sell and x is the number of days she has worked that month. what is the meaning of the number 300 in this equation