How many gallons of a 90% antifreeze solution must be mixed with 80 gallons of 10% antifreeze to get a mixture that is 80% antifreeze? Use the six-step method. You need gallons.

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

The perimeter of a rectangle is greater than or equal to 74 meters. if the length is 25 meters, the minimum width of the rectangle is meters.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3