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3 years ago

Find the measure of each angle indicated. 7)

Mathematics

1 answer:

olganol [36]3 years ago

3 0

The measure of the missing angle is 70°.

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I need help with how you get the answers broken down so I can understand and know for future reference.

Goryan [66]

24 shows that they're counting by 5's so recognize what theyre counting by next time, also since there is a hundredths place in 23 the lowest number which would be E had .701 which was least because it had the 1 and the hundredths spot

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3 years ago

Help if correct will give brainiest

kakasveta [241]

Answer:

Step-by-step explanation:

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3 years ago

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Mr. Good Wrench advertises that a customer will have to wait no more than 30 minutes for an oil change. A sample of 26 oil chang

Andru [333]

Answer:

The 90% confidence interval for the population standard deviation waiting time for an oil change is (3.9, 6.3).

Step-by-step explanation:

The (1 - α)% confidence interval for the population standard deviation is:

$CI=\sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2, (n-1)}}}\leq \sigma\leq \sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2, (n-1)}}}$

The information provided is:

n = 26

s = 4.8 minutes

Confidence level = 90%

Compute the critical values of Chi-square as follows:

$\chi^{2}_{\alpha/2, (n-1)}=\chi^{2}_{0.10/2, (26-1)}=\chi^{2}_{0.05, 25}=37.652$

$\chi^{2}_{1-\alpha/2, (n-1)}=\chi^{2}_{1-0.10/2, (26-1)}=\chi^{2}_{0.95, 25}=14.611$

*Use a Chi-square table.

Compute the 90% confidence interval for the population standard deviation waiting time for an oil change as follows:

$CI=\sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2, (n-1)}}}\leq \sigma\leq \sqrt{\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2, (n-1)}}}$

$=\sqrt{\frac{(26-1)\times 4.8^{2}}{37.652}}\leq \sigma\leq \sqrt{\frac{(26-1)\times 4.8^{2}}{14.611}}\\\\=3.9113\leq \sigma\leq 6.2787\\\\\approx 3.9 \leq \sigma\leq6.3$

Thus, the 90% confidence interval for the population standard deviation waiting time for an oil change is (3.9, 6.3).

3 0

3 years ago

Select the sentence that is written informally.

alex41 [277]

Answer:

I would assume that "It's always awesome to check out new video games" is the informal sentence.

Step-by-step explanation:

Awesome is an informal word as it is a slang, words that qualify to be used formally but resemble "Awesome" include "Astonoshing", "Astounding", "Fabulous" and such.

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3 years ago

The period of | sin (3x) | is A. 2 pi B. 2 pi / 3 C. pi / 3 D. 3 pi

GREYUIT [131]

The period of | sin (3x) | is C. pi / 3.

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3 years ago

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