If the diameter of the following circle is tripled, which of the following expressions could be used to find the area of the new
circle?
9(254.34 in.2)
3(254.34 in.2)
9(1,017.36 in.2)
3(113.04 in.2)
2.The area of a triangle that is similar to the one below is the area of this triangle. What is the length of the base of the similar triangle?
2.3 ft
3.3 ft
7 ft
63 ft
9(254.34 in.2)
3(254.34 in.2)
9(1,017.36 in.2)
3(113.04 in.2)
2.The area of a triangle that is similar to the one below is the area of this triangle. What is the length of the base of the similar triangle?
2.3 ft
3.3 ft
7 ft
63 ft
1 answer:
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Answer:
B) 47.5%
Step-by-step explanation:
Refer to the normal distribution chart attached. If 130 is 2 standard deviations higher than the mean (ignore the numbers beneath the percentages), then by the empirical rule, this means that 34%+13.5%=47.5% of adults are between IQs of 100 and 130. Therefore, option B is correct.
