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alexandr402 [8]
3 years ago
11

Use the Distributive Property to simplify the expression. [Example: 5(4n-3) = 20n - 15] 7(5n-9)

Mathematics
1 answer:
pochemuha3 years ago
7 0

Answer:

I got 17n=5n]26n

I don't know what to do next but I hope it helps  ^^

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The combined SAT scores for the students at a local high school are normally distributed with a mean of 1479 and a standard devi
kotykmax [81]

Answer:

0.35% of students from this school earn scores that satisfy the admission requirement.

Step-by-step explanation:

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 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.

The combined SAT scores for the students at a local high school are normally distributed with a mean of 1479 and a standard deviation of 302.

This means that \mu = 1479, \sigma = 302

The local college includes a minimum score of 2294 in its admission requirements. What percentage of students from this school earn scores that satisfy the admission requirement?

The proportion is 1 subtracted by the pvalue of Z when X = 2294. So

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

Z = \frac{2294 - 1479}{302}

Z = 2.7

Z = 2.7 has a pvalue of 0.9965

1 - 0.9965 = 0.0035

0.0035*100% = 0.35%

0.35% of students from this school earn scores that satisfy the admission requirement.

6 0
2 years ago
2/3÷-4/5 what is two thirds divided by negative four fifths
RUDIKE [14]
I think that this is the resolution
2/3×5/-4 = 10/-12
hope this helps
6 0
3 years ago
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I keep getting xtiny.cf/5GdS can i pls get a real answer. For the past six days, Vampire Weekend (a music band) practiced their
klemol [59]

Answer:

Mean

Step-by-step explanation:

Since 360 is such a greater amount of time than the previous ones, it will greatly affect the mean.

8 0
3 years ago
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PLEASE HELP!! what is the domain of the function below???
Anvisha [2.4K]

f(x) = 57 (19)^(x-4)

The domain is the input or x values

what are the allowed x values

we can put in any values of x we want and the function still works

Domain: all real values  

The range is the output or the y values

It will always be greater than 0

Range: y> 0  or all positive real numbers

7 0
3 years ago
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Solve for x 4x−13=2x+9
Sonbull [250]

4x - 13 = 2x + 9

Add 13 to each side

4x = 2x + 22

Subtract 2x from both sides

2x = 22

Divide both sides by 2

x = 11

3 0
3 years ago
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