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vovangra [49]
3 years ago
9

What number should be added to 51 to get a sum -21

Mathematics
2 answers:
elena55 [62]3 years ago
6 0
51 + -72 = -21
Adding a negative seventy-two to fifty-one will give you a sum of negative twenty-one
Anastaziya [24]3 years ago
3 0
We can write out a formula in order to solve this. Since sum represents addition, if x represents the unknown number, we can write the formula: x+51=-21. Then, to solve for x, you would subtract 51 from both sides to get x=-72 which is the final answer. 
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X - 62.54 = 85.6<br><br> Answer for x
VladimirAG [237]

Answer:23.06

Step-by-step explanation:

subtract 85.6 from 62.54 and that should shoot out your answer

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3 years ago
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Men consume on average 15 grams of protein a day. Assume a normal distribution with a standard deviation of 3 grams. A sample of
tatyana61 [14]

Using the normal distribution, there is a 0.4826 = 48.26% probability that the sample mean is between 15 and 16 grams per day.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

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

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.
  • By the Central Limit Theorem, the sampling distribution of sample means of size n has standard deviation s = \frac{\sigma}{\sqrt{n}}.

For this problem, the parameters are given as follows:

\mu = 15, \sigma = 3, n = 40, s = \frac{3}{\sqrt{40}} = 0.4743

The probability is the <u>p-value of Z when X = 16 subtracted by the p-value of Z when X = 15</u>, hence:

X = 16:

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

By the Central Limit Theorem

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

Z = \frac{16 - 15}{0.4743}

Z = 2.11

Z = 2.11 has a p-value of 0.9826.

X = 15:

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

Z = \frac{15 - 15}{0.4743}

Z = 0

Z = 0 has a p-value of 0.5.

0.9826 - 0.5 = 0.4826 = 48.26% probability that the sample mean is between 15 and 16 grams per day.

More can be learned about the normal distribution at brainly.com/question/15181104

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How to put 1760 into a fraction
Nikolay [14]
Is there a decimal, if so i can answer.
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Ludmilka [50]
The line is leaning to the left, so the slope is negative, eliminate A and D
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3 years ago
Please help me! 10 pts and brainliest! please
luda_lava [24]

Answer:

B is correct

Step-by-step explanation:

i think

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