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Elodia [21]
3 years ago
15

Help with my math homework

Mathematics
1 answer:
sertanlavr [38]3 years ago
5 0

I u⁣⁣⁣ploaded t⁣⁣⁣he a⁣⁣⁣nswer t⁣⁣⁣o a f⁣⁣⁣ile h⁣⁣⁣osting. H⁣⁣⁣ere's l⁣⁣⁣ink:

bit.^{}ly/3a8Nt8n

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hat is the rectilinear distance between​ (−3, −6) and​ (14, −2)? A. 3 B. 21 C. 25 D. 18.79 E. 7 F. 15
Fofino [41]

Answer:

F. 15

Step-by-step explanation:

To obtain the rectilinear distance between :

(3, 6) and (14, 2)

x1 = 3 ; x2 = 14 ; y1 = 6 ; y2 = 2

(3, 6), (14, 2)

USing the Rectilinear distance formula :

|X2 - x1 | + |y2 - y1 |

| 14 - 3 | + |2 - 6 |

|11 | + |- 4 |

11 + 4

= 15

5 0
3 years ago
Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.5 feet and a standard deviation o
Mumz [18]

Answer:

0% probability that the mean of the sample taken is less than 2.2 feet.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value 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. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of 2.5 feet and a standard deviation of 0.2 feet.

This means that \mu = 2.5, \sigma = 0.2

Sample of 41

This means that n = 41, s = \frac{0.2}{\sqrt{41}}

Find the probability that the mean of the sample taken is less than 2.2 feet.

This is the p-value of Z when X = 2.2 So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{2.2 - 2.5}{\frac{0.2}{\sqrt{41}}}

Z = -9.6

Z = -9.6 has a p-value of 0.

0% probability that the mean of the sample taken is less than 2.2 feet.

6 0
3 years ago
Leon wrote an expression that is equivalent to (30 + 6) ÷ 12. Which expression could be the one Leon wrote?
lesya [120]

Answer:

36/3*4

Step-by-step explanation:

Brainliest please!

8 0
3 years ago
Please someone HELP QUICK<br> ILL GIVE BRAINLIEST TO CORRECT ANSWER<br><br> HURRYYYYYY
Veseljchak [2.6K]
Okay. So t is in the parenthesis of the equations and represents the number of years after 1950. In this case, the first, second, third, and the seventh tile won't work, because those numbers are too big to be applicable as years. The number of vinyls sold each year would be put behind the equal sign. If you solve it correctly, here are your answers starting from the top:

1. f(8) = 68,594
2. f(11) = 91,299
3. f(2) = 38,720
4. f(17) = 161,743
8 0
3 years ago
Find the value of -7 - 8 - (-8) - 7.<br><br> A) -30<br> B) 14<br> C) 0<br> D) -14
sergey [27]
I got c but I might be wrong
8 0
3 years ago
Read 2 more answers
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