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Lisa [10]
4 years ago
6

36 is 40% of what number ?

Mathematics
1 answer:
Fudgin [204]4 years ago
5 0

Answer:

  90

Step-by-step explanation:

You can write the equation directly from the problem statement:

  36 = 40% × (what number)

  36/0.40 = 90 = (what number) . . . . . . divide by the coefficient of the variable

The number is 90.

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An elevator has a stated maximum capacity of 12 people or 2004 pounds. If 12 people have weights with a mean greater than (2004/
weqwewe [10]

Answer:

a) 0.6517; b) 0.9115; c) No

Step-by-step explanation:

For part a, we will use the formula for a z score of an individual:

z=\frac{X-\mu}{\sigma}\\\\=\frac{167-182.9}{40.8}\\\\=\frac{-15.9}{40.8}\approx -0.39

Using a z table, we see that the area under the curve to the left of this value is 0.3483.  However, we want the probability greater than this, which is the area to the right of this value under the curve; this means we subtract from 1:

1-0.3483 = 0.6517

For part b, we will use the formula for a z score of the mean of a sample:

z=\frac{\bar{X}-\mu}{\sigma \div \sqrt{n}}\\\\=\frac{167-182.9}{40.8\div \sqrt{12}}\\\\=\frac{-15.9}{40.8\div 3.4641}\\\\=\frac{-15.9}{11.778}\approx -1.35

Using a z table, we see that the area under the curve to the left of this value is 0.0885.  This means the area under the curve to the right of this value is

1-0.0885 = 0.9115

For part c,

The fact that the probability that any 12 men on the elevator will have a mean weight greater than 167, putting their total weight above 2004 pounds, is 91% means the elevator does not have the appropriate limit.  There is a high chance the maximum will be exceeded.

8 0
3 years ago
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Blizzard [7]

Answer:

She has 44 stamps left

Step-by-step explanation:

6 0
3 years ago
Ayuda Porfavor !!!!!!!!
masha68 [24]

Answer:

44

Step-by-step explanation:

10 x 3 = 30

8 + 6 =14

30 + 14 = 44

4 0
3 years ago
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T=48

You just need to find out how many times 12 goes into a number, 4 times.

Which is 48 because 12x4 is 48 and you can check your answer by dividing 48/12=4
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Answer the answer is c

Step-by-step explanation:

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