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3 years ago

Find the value of x

Mathematics

2 answers:

marusya05 [52]3 years ago

6 0

180 - 56 = 124
124 / 2 = 62

2x = 62
x = 31

answer
x = 31

AlekseyPX3 years ago

6 0

A trigangle adds up to 180. Youve been given one lenght (56) so ud do 180 minus that lenght which would give you the answer of 124
Idek if im right tbhh

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Answer:

The 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Step-by-step explanation:

The (1 - α)% confidence interval for the average using the finite correction factor is:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}$

The information provided is:

$N=1500\\n=183\\\sigma=1.47\\\bar x=3.3$

The critical value of z for 95% confidence level is,

z = 1.96

Compute the 95% confidence interval for the average number of years until the first major repair as follows:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}$

$=3.3\pm 1.96\times\frac{1.47}{\sqrt{183}}\times\sqrt{\frac{1500-183}{1500-1}}\\\\=3.3\pm 0.19964\\\\=(3.10036, 3.49964)\\\\\approx (3.1, 3.5)$

Thus, the 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

7 0

3 years ago

What expression is equivalent to 4 to the power of 4 times 4 to the power of -9

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Which statement regarding the diagram is true?

Nuetrik [128]

Find out the statement true regarding the diagram given in the question

Answer

the statement is true regarding the diagram is

m∠WXY + m∠YXZ = 180°

REASON

As shown in the diagram

∠WXY and ∠ YXZ are supplementary angles.

Supplementary angle definition

Two Angles are said to be Supplementary when there sum is equal to 180 °.

thus we get

m∠WXY + m ∠YXZ = 180 °

Therefore the m∠WXY + m∠YXZ = 180° is the true statement.

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