Four of a sample of 150 computers will be selected and tested. how many ways are there to make this selection? type a numerical answer in the space provided. do not type any commas or spaces in your answer.

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared