A professor has recorded exam grades for 10 students in the class, but one of the grades is no longer readable. If the mean score on the exam was 80 and the mean of the 9 readable scores is 84, what is the value of the unreadable score?

Will give brainliest sum of arithmetic series (sigma notation) find the numerical answer to the summation given below. (image shown below)

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?