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WINSTONCH [101]
2 years ago
12

Calculate the mean, median, mode, and midrange of this quiz distribution and explain whether the distribution is skewed to the l

eft or to the right.
a.
Mean = 9, median = 8.2, mode = 7, midrange = 9; skewed to the left.
b.
Mean = 8.2, median = 9, mode = 9, midrange = 7; skewed to the left.
c.
Mean = 8.2, median = 9, mode = 9, midrange = 7; skewed to the right.
d.
Mean = 9, median = 8.2, mode = 7, midrange = 9; skewed to the right.
Mathematics
2 answers:
Elina [12.6K]2 years ago
7 0

Answer:

B). Mean = 8.2, median = 9, mode = 9, midrange = 7; skewed to the left

Step-by-step explanation:

Inessa [10]2 years ago
5 0

Answer:

B

Step-by-step explanation:

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Answer:

See below.

Step-by-step explanation:

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Use a calculator:

V\approx69.97\text{ km}^3

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In a class of 38 student,30 are good in mathematics and 22 are good in physics how many students are good in both mathematics an
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3 years ago
the length of a rectangle is 5 less than twice the width.if the perimeter of the rectangle is 146,find the area of the rectangle
raketka [301]

Answer:

The area of the rectangle is 1222 units²

Step-by-step explanation:

The formula of the perimeter of a rectangle is P = 2(L + W), where L is its length and W is its width

The formula of the area of a rectangle is A = L × W

∵ The length of a rectangle is 5 less than twice the width

- Assume that the width of the rectangle is x units and multiply

   x by 2 and subtract 5 from the product to find its length

∴ W = x

∴ L = 2x - 5

- Use the formula of the perimeter above to find its perimeter

∵ P = 2(2x - 5 + x)

∴ P = 2(3x - 5)

- Multiply the bracket by 2

∴ P = 6x - 10

∵ The perimeter of the rectangle is 146 units

∴ P = 146

- Equate the two expression of P

∴ 6x - 10 = 146

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∴ 6x = 156

- Divide both sides by 6

∴ x = 26

Substitute the value of x in W and L expressions

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∴ L = 47 units

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∴ A = 1222 units²

∴ The area of the rectangle is 1222 units²

7 0
3 years ago
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