15.
Explanation: 1/8 of 40 is 5, 1/2 of 40 is 20. 20+5=25 and 40-25=15
Easy
4 and 1/3+7 and 1/5=4+1/3+7+1/5=4+7+1/3+1/5=11+5/15+3/15=11+8/15=11 and 8/15
answer is D
Standard deviation would be the best measurement of variance. Most of the numbers are between 91 and 89 and are thus very close together and most of the data would be within that small range. The outlier of 60 makes the rance variance go from 60 to 91 when all but 6 percent of the class can be represented between 91 and 89.
21 x 3.14 = 65.94 inches basically multiply by 3.14 there is another way to do it but I don’t know it. Hope this helps!
