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postnew [5]
2 years ago
7

Becky has 30 t shirts in a drawer: 12 Concert shirt 8 team shirts and 10 plain shirt. Of the 10 shirts she randomly selects to g

ive to charity 3 are concert shirts.How does this frequency compare to the expected from what’s the frequency based on the probability of randomly selecting a concert shirt.
A. The frequency is 1 fewer than expected


B. The frequency is 9 fewer than expected


C. The frequency is 2 more than expected


D. The frequency is the same as expected
Mathematics
2 answers:
kondor19780726 [428]2 years ago
6 0

Answer:

A

Step-by-step explanation:

You take the number of shirts you have and are focusing on. In this case concert (12) and divide it by the total number of shirts to get the expected.

Rainbow [258]2 years ago
5 0

Answer:

B

Step-by-step explanation:

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The perimeter of a pool table is about 7.8m. four times the length equals nine times the width. What are the dimensions of the t
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The pool's dimension are  l = 2.7 m and w = 1.2 m

Step-by-step explanation:

Step 1 :

Given

The pool's perimeter = 7.8 m

Four times the pool's length = nine times the pool's width.

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Step 2:

The rectangle's formula for perimeter is 2 (l+w)

Substituting l = (\frac{9}{4}) w ,

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Step 3 :

l = (\frac{9}{4}) w = (\frac{9}{4}) 1.2 = 2.7

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Step 4 :

Answer :

The pool's dimension are  l = 2.7 m and w = 1.2 m

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Step-by-step explanation:

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