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Mamont248 [21]
3 years ago
8

Help pls!!ty!!:))):):

Mathematics
1 answer:
Bess [88]3 years ago
5 0

Answer:

Step-by-step explanation:

y = 85x+90

3) 85*3+90 (rule)

y= 85*3 = 255 + 90 = 345  (output)

4) 85*4+90 (rule)

y = 85*4=  340 + 90 = 430 (output)

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1. Suppose you have a variable X~N(8, 1.5). What is the probability that you have values between (6.5, 9.5)
Natalija [7]

Answer:

0.6826 = 68.26% probability that you have values in this interval.

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 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.

X~N(8, 1.5)

This means that \mu = 8, \sigma = 1.5

What is the probability that you have values between (6.5, 9.5)?

This is the p-value of Z when X = 9.5 subtracted by the p-value of Z when X = 6.5. So

X = 9.5

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

Z = \frac{9.5 - 8}{1.5}

Z = 1

Z = 1 has a p-value of 0.8413.

X = 6.5

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

Z = \frac{6.5 - 8}{1.5}

Z = -1

Z = -1 has a p-value of 0.1587

0.8413 - 0.1587 = 0.6826

0.6826 = 68.26% probability that you have values in this interval.

7 0
3 years ago
|-7+5|+|2+(-5)| what is the sum
scoray [572]
The sum of the equation is 5
5 0
3 years ago
Read 2 more answers
Swimmer on 4x100 relay team each swim 100 meter, and their individual times are totaled to form their overall team time. A parti
vovikov84 [41]

Answer:

250 secs

Step-by-step explanation:

7 0
3 years ago
Thats it, ima be also posting more if i dont get the question
soldi70 [24.7K]

The equation of this straight line is y = 50x + 100.

<h3>What is a linear function?</h3>

A linear function can be defined as a type of function whose equation is graphically represented by a straight line on the cartesian coordinate.

<h3>How to determine the equation?</h3>

In order to determine the equation from this graph of a linear equation, we would find the slope of the straight line by using this formula as follows:

Slope,\;m = \frac{Change\;in\;y\;axis}{Change\;in\;x\;axis}\\\\Slope,\;m = \frac{y_2\;-\;y_1}{x_2\;-\;x_1}

Slope, m = 100/2

Slope, m = 50.

Mathematically, the standard form of the equation of a straight line is given by;

y = mx + c

Where:

  • x and y are the points.
  • m is the slope.
  • c is the intercept.

At point (4, 300), we have:

y = mx + c

300 = 50(4) + c

300 = 200 + c

c = 300 - 200

c = 100.

Therefore, the equation of this straight line is y = 50x + 100.

Read more on slope here: brainly.com/question/28312822

#SPJ1

5 0
1 year ago
The area of the square is 25. What is each side length
Paraphin [41]

Answer:

6.25 square inches

Step-by-step explanation:

The formula for the length of each side of a square when given the area is below

L=A/4

Now we plug in the numbers

L=25/4

L=6.25

Brainliest? :)

5 0
3 years ago
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