if the mean is 70 minutes, then 90 minutes is 2 standard deviations above 70. if you look at the bell curve i drew, the percent of exams that took over 90 minutes is 2.5%
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Answer:
b
Step-by-step explanation:
Answer:
720 in^3.
Step-by-step explanation:
12 * 60 = 720.
Answer:
70 degrees
Step-by-step explanation:
Because an area of a triangle is 180.
55 + 55 = 110 180 - 110 = 70
110 + 70 = 180