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Zolol [24]
3 years ago
15

The line plots show the number of hours two groups of kids spent studying last weekend.

Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
7 0
Answer: The last choice.

The mean of the 14 to 17 years olds is higher than the mean of the 10 to 13. You can see this in the line plots because in the older group the majority of the points are higher than the younger group. If you calculate the mean, the younger group is only 4.27 while the upper group is 6.81.
ivanzaharov [21]3 years ago
5 0

Answer:

The answer is: The 14- to 17- years old spent more hours studying , on average, last weekend than the 10- to 13- years olds.

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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3 years ago
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nikitadnepr [17]

Answer:

A \approx 1140.3\ units^2

Step-by-step explanation:

To solve this problem we first need to find the diameter of the circle. We are told the point N is the circle, so we can assume it is the center of the circle. To find the diameter we can use the Pythagorean Theorem:

a^2 + b^2 = c^2\\40^2 + 9^2 = c^2\\1600 + 81 = c^2\\1681 = c^2\\\sqrt{1681} = c\\41 = c

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A_c = \pi r^2\\A_c = \pi (\frac{41}{2})^2\\A_c = \pi 420.25\\A_c \approx 1320.25

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A_t = \frac{bh}{2}\\A_t = \frac{40 \times 9}{2}\\A_t = \frac{360}{2}\\A_t = 180

Subtract the triangle area from the circle area to get the area of the shaded area:

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Step-by-step explanation:

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