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Delvig [45]
3 years ago
12

How many degrees are there in angle C? ** multiple choice question

Mathematics
2 answers:
lawyer [7]3 years ago
5 0

There are 50 degrees in angle c

Helen [10]3 years ago
5 0

Answer: A. 50°

Step-by-step explanation:

Since the measure angles of a triangle add up to 180° and the right triangle=90°, therefore when you subtract 180-90-40, you get 90-40, which then equals to 50°.

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A new phone system was installed last year to help reduce the expense of personal calls that were being made by employees. Befor
Leya [2.2K]

Using the normal distribution, it is found that there was a 0.9579 = 95.79% probability of a month having a PCE between $575 and $790.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

Z = \frac{X - \mu}{\sigma}

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 700, \sigma = 50.

The probability of a month having a PCE between $575 and $790 is the <u>p-value of Z when X = 790 subtracted by the p-value of Z when X = 575</u>, hence:

X = 790:

Z = \frac{X - \mu}{\sigma}

Z = \frac{790 - 700}{50}

Z = 1.8

Z = 1.8 has a p-value of 0.9641.

X = 575:

Z = \frac{X - \mu}{\sigma}

Z = \frac{575 - 700}{50}

Z = -2.5

Z = -2.5 has a p-value of 0.0062.

0.9641 - 0.0062 = 0.9579.

0.9579 = 95.79% probability of a month having a PCE between $575 and $790.

More can be learned about the normal distribution at brainly.com/question/4079902

#SPJ1

3 0
1 year ago
Please help I am so stuck
o-na [289]
First third and last answer
3 0
2 years ago
GiReady
vladimir2022 [97]

Answer: Decreased by 12 students

Step-by-step explanation:

40-28=12

7 0
3 years ago
Read 2 more answers
What is angle LKM? I need help right away please!!
kykrilka [37]

Answer:

Angle LKM is 110

Step-by-step explanation:

Since all the angles in a triangle equal 180, and 60 is one angle you can see its an equilaterial triangle.

so x=60

Then 3(60)-70=110

So LKM=110

8 0
3 years ago
Read 2 more answers
Help! Please!
Lemur [1.5K]

Answer:

1) 130°

2) 130°

Step-by-step explanation:

Assuming SR, TU, and PQ are parallel, they would both be 130.  (180-50)

7 0
2 years ago
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