Can anyone help me expand this please?

1 answer:

7 0

Any explain this to me a little bit morebetter

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Mashcka [7]

Answer:

120

Step-by-step explanation:

Because we know that the line opposite of the right angle is flat, we know that 60 plus x must equal 180. Rewriting this gives us 180 - 60 = x.

Now, we can just solve for x.

x = 120.

8 0

3 years ago

lawyer [7]

Your answer is -44
please rate as brainliest and hope this helps :)

7 0

4 years ago

ExtremeBDS [4]

There is a probability of 77% that the mean of this sample is between 19.25 hours and 21.0 hours

Z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma/\sqrt{n} } \\\\where\ x=raw\ score,\mu=mean,\sigma=standard\ deviation,n=sample\ size$

Given that μ = 20, σ = 7, n = 125.

For x = 19.25:

$z=\frac{19.25-20}{7/\sqrt{125} } =-1.20\\\\\\For\ x=21:\\\\z=\frac{21-20}{7/\sqrt{125} } =0.62$

From the normal distribution table, P(-1.20 < z < 0.62) = P(z < 0.62) - P(z < -1.2) = 0.8849 - 0.1151 = 0.7698 = 77%

There is a probability of 77% that the mean of this sample is between 19.25 hours and 21.0 hours

8 0

2 years ago

Jobisdone [24]

I think you should check the internet first

5 0

3 years ago

Cloud [144]

Answer: 3x2+5x−4

The 2 behind 3x is an exponent

7 0

3 years ago