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solniwko [45]
2 years ago
11

Suppose 8 out of every 20 students are absent from school less than five days a year. Predict how many students would be from sc

hool less than five days a year out of 400 students
Mathematics
1 answer:
vazorg [7]2 years ago
8 0

Answer:

160

Step-by-step explanation:

With the problem, it's best to put this into a fraction

8/20 of every student will be absent from school less than five days a year, which can then be simplified to 2/5.

There are multiple ways to go about this problem, but my preferred way is to then take 1/5th of 400, which can be done by taking 1*400/5 which equals 80. Since we are asking for 2/5's, just multiply that number by 2, which gives us 160 students.

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At the doctor's appointment a baby weight 10 pounds how many ounces did the baby weigh​
Xelga [282]

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<u>160 ounces</u>

Step-by-step explanation:

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Read 2 more answers
Assume that​ women's heights are normally distributed with a mean given by mu equals 62.5 in​, and a standard deviation given by
kirza4 [7]

Answer: a) The probability is approximately = 0.5793

b) The probability is approximately=0.8810

Step-by-step explanation:

Given : Mean : \mu= 62.5\text{ in}

Standard deviation : \sigma = \text{2.5 in}

a) The formula for z -score :

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

Sample size = 1

For x= 63 in. ,

z=\dfrac{63-62.5}{\dfrac{2.5}{\sqrt{1}}}=0.2

The p-value = P(z

0.5792597\approx0.5793

Thus, the probability is approximately = 0.5793

b)  Sample size = 35

For x= 63 ,

z=\dfrac{63-62.5}{\dfrac{2.5}{\sqrt{35}}}\approx1.18

The p-value = P(z

= 0.8809999\approx0.8810

Thus , the probability is approximately=0.8810.

6 0
3 years ago
WILL GIVE BRAINLIST the answer is not 74​
olga nikolaevna [1]

Answer:

82

Step-by-step explanation:

180+148+xy=360

xy=32

arc=32=double the angle=16 degrees

Since both are radii they are equal. It is an isoceles triangle so angle x equals angle y.

180=16=164/2=82

4 0
3 years ago
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