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swat32
3 years ago
14

Solue for n (M+n)/p=r

Mathematics
1 answer:
Eva8 [605]3 years ago
4 0
(M+n)/p=r
Multiply by p
M+n=pr
Minus M
n=pr-M
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Jon hikes 13.5 mi at a constant rate of 3 mi/h. How many hours does he hike?
joja [24]
13.5/3 = 4.5

He hiked for 4.5 hours.


6 0
3 years ago
Answer asap
Gnom [1K]
Swap the n with the 7

7-5

Find the answer to 7-5

7-5=2

So the answer is 2
7 0
1 year ago
Suppose that the population mean for income is $50,000, while the population standard deviation is 25,000. If we select a random
Fudgin [204]

Answer:

Probability that the sample will have a mean that is greater than $52,000 is 0.0057.

Step-by-step explanation:

We are given that the population mean for income is $50,000, while the population standard deviation is 25,000.

We select a random sample of 1,000 people.

<em>Let </em>\bar X<em> = sample mean</em>

The z-score probability distribution for sample mean is given by;

               Z = \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \mu = population mean = $50,000

            \sigma = population standard deviation = $25,000

            n = sample of people = 1,000

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

So, probability that the sample will have a mean that is greater than $52,000 is given by = P(\bar X > $52,000)

  P(\bar X > $52,000) = P( \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } } > \frac{52,000-50,000}{\frac{25,000}{\sqrt{1,000} } } ) = P(Z > 2.53) = 1 - P(Z \leq 2.53)

                                                                    = 1 - 0.9943 = 0.0057

<em>Now, in the z table the P(Z </em>\leq<em> x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 2.53 in the z table which has an area of 0.9943.</em>

Therefore, probability that the sample will have a mean that is greater than $52,000 is 0.0057.

5 0
2 years ago
8 1/2 + 7 2/3 + 4 1/2
SCORPION-xisa [38]

Answer:

62/3 is the answer

hope this helps! :)

Step-by-step explanation:

5 0
2 years ago
Please answer the 2 question <br> l will mark as brainiest
N76 [4]

Answer:

1. A=πr2=π·4.62≈66.4761

A≈66.48

2. A=πr2=π·22≈12.56637

A≈12.57

please mark as brainiest

3 0
2 years ago
Read 2 more answers
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