Find a + b, 9a + 7b, |a|, and |a − b|. a = 9i − 8j + 7k, b = 7i − 9k

Question 4 of 102 pointsjuliana had $96, which is eight times as much money as al had. how mucmoney did al have? select the correct solution method below, representingals money with x.

Use the given information to determine the exact trigonometric value.

Margie is practicing for an upcoming tennis tournament. her first serve is good 20 out of 30 times on average. margie wants to know the estimated probability that her first serve will be good at least four of the next six times she serves. how could she design a simulation for this scenario?