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lisov135 [29]
3 years ago
14

Which expression matches the words "the product of 12 and 4, then subtract 8

Mathematics
1 answer:
Rasek [7]3 years ago
7 0
The answer is 8 because 12 plus 4 is 16, and then 16 minus 8 is 8
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If a and b are whole number, what is the distance between the two points? Show your work.
Gnoma [55]

Answer:

6b

Step-by-step explanation:

|-b| = b

b+5b= 6b

4 0
3 years ago
Jayce goes out for a walk. He walks 5/4 miles from home. He walks back 1/2 mile before meeting up with his friend Macy. Write an
GarryVolchara [31]

+  \frac{5}{4}  -  \frac{1}{2}  =  \frac{1}{4}
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3 0
3 years ago
Assume the random variable X is normally distributed with mean mu equals 50 and standard deviation sigma equals 7. Compute the p
drek231 [11]

Answer:

The probability that <em>X</em> is less than 42 is 0.1271.

Step-by-step explanation:

The random variable <em>X </em>follows a Normal distribution.

The mean and standard deviation are:

E (X) = <em>μ</em> = 50.

SD (X) = <em>σ</em> = 7.

A normal distribution is continuous probability distribution.

The Normal probability distribution with mean µ and standard deviation σ is given by,

f_{X}(\mu, \sigma)=\frac{1}{\sigma\sqrt{2\pi}}e^{-(x-\mu)^{2}/2\sigma^{2}};\ -\infty

To compute the probability of a Normal random variable we first standardize the raw score.

The raw scores are standardized using the formula:

z=\frac{x-\mu}{\sigma}

These standardized scores are known as <em>z</em>-scores and they follow normal distribution with mean 0 and standard deviation 1.

Compute the probability of (X < 42) as follows:

P(X

*Use a <em>z</em>-table for the probability.

Thus, the probability that <em>X</em> is less than 42 is 0.1271.

The normal curve is shown below.

6 0
3 years ago
PLEASE HELP
cricket20 [7]
You can use the cosine rule for this - you might have to change some of the letters around for it to make sense though. Hope this helps!

4 0
3 years ago
THIS QUESTION IS WORTH 15 POINTS
ikadub [295]

Answer:

3.7

This means that the answer is past the 3 point on the number line and 3 tick marks before the 4 point.

5 0
3 years ago
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