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siniylev [52]
3 years ago
6

3+2x=15 solve for x.

Mathematics
1 answer:
JulijaS [17]3 years ago
6 0
3 + 2x = 15
2x = 15-3
2x = 12
x = 12/2
x= 6
Not sure is it’s right:)!
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Systolic Blood Pressure Assume that the mean systolic blood pressure of normal adults is 120 millimeters of mercury and the stan
liq [111]

Answer:

0.1425 = 14.25% probability that the individual's pressure will be between 119.4 and 121.4mmHg.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore 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 pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 120, \sigma = 5.6

Find the probability that the individual's pressure will be between 119.4 and 121.4mmHg

This is the pvalue of Z when X = 121.4 subtracted by the pvalue of Z when X = 119.4. So

X = 121.4

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

Z = \frac{121.4 - 120}{5.6}

Z = 0.25

Z = 0.25 has a pvalue of 0.5987

X = 119.4

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

Z = \frac{119.4 - 120}{5.6}

Z = -0.11

Z = -0.11 has a pvalue of 0.4562

0.5987 - 0.4562 = 0.1425

0.1425 = 14.25% probability that the individual's pressure will be between 119.4 and 121.4mmHg.

8 0
2 years ago
Please could I have some Help :)
Ann [662]
The answer is 414.69023
6 0
3 years ago
Read 2 more answers
X3−2=10 help plz i need help
Norma-Jean [14]
X=4
This is because
(4)3-2=10
12-2=10
10=10
This makes the statement true!
Hope this helps have a good day!
6 0
2 years ago
Which of the following expressions is equivalent to -9?
dlinn [17]

Answer:

A and C

Step-by-step explanation:

-3*3 = -9

-1*-9 = 9

-27/3 = -9

-9/-1 = 9

6 0
3 years ago
Read 2 more answers
 For an average adult the surface area of the skin is about 19,000 square cm and the thickness of the skin ranges from about 0.5
timama [110]
That's not actually true for "this page", but I know what you mean.

19,000 / 630 = about <u>30 sheets</u> of A4 paper to cover an average adult's body.

You may be on to a new fashion trend here.
3 0
3 years ago
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