In a chemistry course, a student scored 99 on one test, 98 on another test, and 88 on each of the other tests. the student’s test average for the course, where each test is weighted equally, is exactly 91. what is the total number of tests that the student has taken in the course?

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b