When arianna goes bowling, her scores are normally distributed with a mean of 135
and a standard deviation of 12. using the empirical rule, what percentage of the
games that arianna bowls does she score between 99 and 171?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Rewrite the expression in z to the n power. the expression i was given is: 1 over z to the negative 1 half power.

Pleasseee important quick note: enter your answer and show all the steps that you use to solve this problem in the space provided. use the circle graph shown below to answer the question. a pie chart labeled favorite sports to watch is divided into three portions. football represents 42 percent, baseball represents 33 percent, and soccer represents 25 percent. if 210 people said football was their favorite sport to watch, how many people were surveyed?