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Eddi Din [679]
1 year ago
12

If m∠2 = 137 and m∠P = 22, what is m∠O?

Mathematics
1 answer:
Katyanochek1 [597]1 year ago
8 0

Answer:

The answer is 21

Step-by-step explanation:

This should help you

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HELP ASAP ANY LINKS WILL BE REPORTED <br>a.IJ<br>b.WY<br>c.XW<br>d.XY​
ruslelena [56]
The answer is C........
4 0
2 years ago
At a cell phone assembly plant, 77% of the cell phone keypads pass inspection. A random sample of 111 keypads is analyzed. Find
Serggg [28]

Answer:

The probability that the proportion of passed keypads is between 0.72 and 0.80 is 0.6677.

Step-by-step explanation:

According to the Central limit theorem, if from an unknown population large samples of sizes <em>n</em> > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

 \mu_{\hat p}=p

The standard deviation of this sampling distribution of sample proportion is:

\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}

Let <em>p</em> = the proportion of keypads that pass inspection at a cell phone assembly plant.

The probability that a randomly selected cell phone keypad passes the inspection is, <em>p</em> = 0.77.

A random sample of <em>n</em> = 111 keypads is analyzed.

Then the sampling distribution of \hat p is:

\hat p\sim N(p,\ \sqrt{\frac{p(1-p)}{n}})\\\Rightarrow \hat p\sim N (0.77, 0.04)

Compute the probability that the proportion of passed keypads is between 0.72 and 0.80 as follows:

P(0.72

                             =P(-1.25

Thus, the probability that the proportion of passed keypads is between 0.72 and 0.80 is 0.6677.

8 0
3 years ago
Is it ture equivalent decimals are decimals that have the same value
tester [92]
Yes that statement is true
4 0
3 years ago
► Find the percent change and tell whether it is a percent increase or a
Jlenok [28]

Answer:

1 Original amount: 20

End amount: 15

<h3>(20 - 15)/20 x 100 = (5/20) x 100 = 25% decrease</h3>

2 Original amount: 30

End amount: 45

<h3>(45 - 30)/30 x 100 = (15/30) x 100 = 50% increase </h3>

3 Original amount: 625

End amount: 550

<h3>550/625 =550 ÷ 625 =0.88</h3><h3>0.88 =0.88 × 100/100 =(0.88 × 100)/100 =88/100 =88% decrease</h3>

4 Original amount: 320

End amount: 112

<h3>(112-320):320x100 =</h3><h3>100 =(112:320-1)x100 =</h3><h3>100 =35-100 = -65% decrease</h3>

5 Original amount: 165

End amount: 222.75

<h3>165/222.75 =165 ÷ 222.75 ≈0.740740740740741</h3><h3>0.740740740740741 =0.740740740740741 × 100/100 =(0.740740740740741 × 100)/100 ≈74.074074074074/100 =74.074074074074% ≈74.07% Increase </h3>

6 Original amount: 326

End amount: 423.80

<h3>(423.8-326):326x100 =</h3><h3>100 =(423.8:326-1)x100 =</h3><h3>100 =130-100 = 30% Increase </h3>

7 Original amount: 27

End amount: 38.61

<h3>(38.61-27):27x100 =</h3><h3>100 =(38.61:27-1)x100 =</h3><h3>100 =143-100 = 43% Increase</h3>

8 Original amount: 60

End amount: 70.02

<h3>(70.02-60):60x100 =</h3><h3>100 =(70.02:60-1)x100 =</h3><h3>100 =116.7-100 = 16.7% Increase</h3>

7 0
3 years ago
Solve for x. <br><br> 3x - 8x + 2 = 17<br><br> X=
Vsevolod [243]

Answer:

-3

Step-by-step explanation:

3x-8x=17-2

3x-8x=15

-5x=15

-x=15/5

-x=3

x=-3

3 0
2 years ago
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