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3 years ago

HELPP PLEASEEEEE please

Mathematics

1 answer:

MrMuchimi3 years ago

5 0

Answer:

a. (7/4)^4

Step-by-step explanation:

i hope this helps :)

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The value of x must be greater than O0 1 O3 7 12 15

gogolik [260]

Answer:

Step-by-step explanation:

8 0

3 years ago

G(n) = 2n + 2 f(n) = n^2-3 Find (g+f)(n) please show work

Mars2501 [29]

Answer:

2n + n² -1

Step-by-step explanation:

2n + 2 + n² - 3

2n + n² -1

Lemme know if I read the equation wrong :)

6 0

3 years ago

This scale drawing of a rectangular computer chip has dimensions 5,5 centimeters by 12.75 centimeters. The length

podryga [215]

Answer:

280.5 mm^2

Step-by-step explanation:

scale * 25.5 mm = 127.5 mm 1275/25.5 = 5 scale factor

25.5 * 55/5 = 280.5 mm^2

4 0

2 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

What is the value of the expression -5(3+4)?

777dan777 [17]

Answer:

-35

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers