Here are 10 test scores: 73, 74, 76, 77, 78, 79, 80, 80, 82, 84. the mean of these scores is 78.3. does this set have an outlier and, if so, how does removing it affect the mean?

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )