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Ainat [17]
3 years ago
15

Please help me with this and I need the work shown out please

Mathematics
1 answer:
givi [52]3 years ago
5 0
Please note that you have to use the reason vert. opp. angles to find x, hope it helps:)

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Your lumber company has bought a machine that automatically cuts lumber. The seller of the machine claims that the machine cuts
maksim [4K]

Answer:

a) 0.0202

b)The seller's claim is not correct.

c) If the seller's claim is true we cannot have individual length of 72.15 inch.

Step-by-step explanation:

In the question it is given that

population mean, μ = 72 inch

Population standard deviation, σ = 0.5 inch

Sample size, n = 47

Sample mean, x =72.15 inch

a) z score = \frac{x-\mu}{\sigma/\sqrtr{n}} = \frac{72.15-72}{0.5/\sqrt{47}} = 2.0567

P(x ≥ 72.15) = P(z ≥ 2.0567) = 0.5 - 0.4798 = 0.0202

We calculated the probability with the help of standard normal table.

b) The sellers claim that the machine cuts the lumber with a mean length of 72 inch is not correct as we obtained a very low probability.

c)If we assume that the seller's claim is true that is the machine cuts the lumber into mean length of 72 inch then we cannot have an individual length 72.15.

Standard error = \frac{\sigma}{\sqrt{n} } = 0.0729

Because it does not lie within the range of two standard errors that is (μ±2 standard error) = (71.8541,72.1458)

4 0
3 years ago
What is the unit price of a quart of juice for $0.79?
UkoKoshka [18]

Answer:

a

Step-by-step explanation:

there are 4 quarts in a gallon.

4 times $0.79 =$3.16

4 0
3 years ago
(a)/(5h+q)=t Find a (a)/ means fraction
Elena L [17]

Answer:

Step-by-step explanation:

a/(5h+q) = t

multiply both sides by 5h + q

a / (5h + q) * (5h+q) = t * (5h + q)

a =  t * (5h + q)

I would say this is your answer.

You could distribute the t

a = 5ht + tq

which could also be an answer.

7 0
3 years ago
A scuba diver dove from the surface of the ocean to an elevation of −49 9/10 feet at a rate of −11.1 feet per minute. After spen
Norma-Jean [14]
Descent time: 4.25 min
hover time: 12.75 min
19.125 - 4.25-12.75 = 2.125 min

So, the ascent rate was (-28.9 - (-79.9))ft/2.125min = 24.0 ft/min
6 0
2 years ago
Can someone help me with theses 17 points and mark
lukranit [14]

Answer:

Use the app photomath, it almost always finds answers for worksheets.

Step-by-step explanation:

7 0
3 years ago
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