Show that∫sin30(x)dx=−130sin29(x) cos(x) +2930∫sin28(x)dx

Cass decided to sell game programs for the hockey game. the printing cost was over 20 cents per program with a selling price of 50 cents each. cass sold all but 50 of the programs, and made a profit of $65. how many programs were printed? letting p represent the number of programs printed, set up an equation that describes this situation. then solve your equation for p.

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.