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slava [35]
3 years ago
6

Help meee i need the X and what the angles are

Mathematics
1 answer:
algol133 years ago
6 0

Answer:

x will be 120 degrees

Step-by-step explanation:

I will loves easy questions!

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How do you solve 111.8 divided by 13
rodikova [14]
Line the decimal first then divide 3
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Solve this equation for x: x2 + 11x + 28 = 0
saw5 [17]

Answer:

Step-by-step explanation:

The answer is factor the trinomial

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3 years ago
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Given the following table, determine the missing value.<br> a. 1.15<br> C 15<br> b. 115<br> d. .15
Setler [38]

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it's c because it's the missing value

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3 years ago
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The compressive strength of concrete is normally distributed with mu = 2500 psi and sigma = 50 psi. A random sample of n = 8 spe
Nata [24]

Answer:

X \sim N(2500,50)  

Where \mu=2500 and \sigma=50

We select a sample size of n =8. Since the distribution for X is normal then we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And the standard error would be:

SE = \frac{50}{\sqrt{8}}= 17.678 psi

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

Let X the random variable that represent the compressive strength of concrete of a population, and for this case we know the distribution for X is given by:

X \sim N(2500,50)  

Where \mu=2500 and \sigma=50

We select a sample size of n =8. Since the distribution for X is normal then we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And the standard error would be:

SE = \frac{50}{\sqrt{8}}= 17.678 psi

7 0
3 years ago
Chen completed the division problem below. 0.9 StartLongDivisionSymbol 192.6 EndLongDivisionSymbol right arrow 9 StartLongDivisi
tatuchka [14]

Answer:

He should have multiplied both numbers by 100

Step-by-step explanation:

Given

See Attachment for given

Required

What's Chen error

Chen error is at step 2 where he changed 0.9 to 9.

Any changes made on the divisor must also be made on the dividend

He got 9 by multiplying 0.9 by 10;

So, his mistake is that he should have multiplied both numbers by the same number.

From the list of given options, the option that best answer this question is He should have multiplied both numbers by 100

3 0
3 years ago
Read 2 more answers
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