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3 years ago

Plz help it’s due tonight!!!

Mathematics

1 answer:

Nataliya [291]3 years ago

5 0

LKM≈TEJ since it makes the triangles congruent, although the angles in each triangle are not corresponding equal angles

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Find the least common denominator for these

IgorLugansk [536]

Answer:

this is the stuff i meed help on

6 0

3 years ago

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

I will give 100 pionts and branlyest to anyone who gits this right

aev [14]

Answer:

true

Step-by-step explanation:

3 0

3 years ago

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The shirt was $7.45 he pays with a $20 how much he getting back

nordsb [41]

Answer:

$12.55

Step-by-step explanation:

20-7.45=12.55

4 0

4 years ago

Through the point (5,1) with a slope of 4/5

Nataly_w [17]

Answer:

y-1=4/5(x-5)

Step-by-step explanation:

y-1=4/5(x-5)

4 0

4 years ago