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lina2011 [118]
3 years ago
9

PLEASE HELP I NEED HELP WITH THIS PLEASE PLEASNEOLEASBEJEJXNFBDJFB

Mathematics
1 answer:
Papessa [141]3 years ago
7 0

9514 1404 393

Answer:

  (5x -8) +96 +(5x +2) +4x +4x = 540

  x = 25

Step-by-step explanation:

It usually works to follow directions. The sum of angles is ...

  (5x -8) +96 +(5x +2) +4x +4x = 540 . . . . An equation

  18x +90 = 540 . . . . . . . . . collect terms

  x +5 = 30 . . . . . . . . . divide by 18

  x = 25 . . . . . . . . subtract 5

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3 years ago
8.23 A manufacturing company produces electric insulators. You define the variable of interest as the strength of the insulators
Kitty [74]

Answer:

The 95% confidence interval estimate for the population mean force is (1691, 1755).

Step-by-step explanation:

According to the Central Limit Theorem if we have an unknown population with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from the population with replacement, then the distribution of the sample mean will be approximately normally.

The sample selected here is <em>n</em> = 30.

Thus, the sampling distribution of the sample mean will be normal.

Compute the sample mean and standard deviation as follows:

\bar x=\frac{1}{n}\sum x=\frac{1}{30}\times 51702=1723.4\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{30-1}\times 232561.2}=89.55

Construct a 95% confidence interval estimate for the population mean force as follows:

CI=\bar x\pm z_{\alpha /2}\times\frac{s}{\sqrt{n}}

    =1723.4\pm 1.96\times\frac{89.55}{\sqrt{30}}\\\\=1723.4\pm 32.045\\\\=(1691.355, 1755.445)\\\\\approx (1691, 1755)

Thus, the 95% confidence interval estimate for the population mean force is (1691, 1755).

3 0
3 years ago
a parallelogram has side lenghts 20 cm and 25 cm. the diagonal opposite the obtuse angle measures 38 cm. what is the measure of
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Step-by-step explanation:

1. draw the parallelogram with side 20cm and 25cm respectively and also the diagonal as well.

2.Clearly it forms a triangle in the parallelogram with three known lengths of side.

3.Using the cosine rule : c^2=b^2+c^2 -2bc cos c to find the obtuse angle.

3 0
3 years ago
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ludmilkaskok [199]

Answer:

i sadly still have to go, i live in the east coast so the weather isn't bad

4 0
3 years ago
10 push-ups in 2 days= ?
bekas [8.4K]

Answer:

10 pushups?

or 20 if you do 10 pushups per day.

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Step-by-step explanation:

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