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Elanso [62]
3 years ago
6

Write the equation of a line whose y-intercept is 8 and it parallel to a line with slope 1/2

Mathematics
2 answers:
Alinara [238K]3 years ago
8 0
Y = x/2 +8
y = mx + c
m = gradiant. c = incest on the y axis
since it is parallel to line with slope (m) = 1/2
since m of two lines which are parallel are equal
: m = 1/2. c = 8
y = 1/2(x) + 8
y = x/2 + 8
Alex3 years ago
4 0
Y=1/2x+8

I think this might be right
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Read 2 more answers
The exam scores for 200 students are normally distributed with a mean of 72 and a standard deviation of 10. Which answer choice
Paha777 [63]

Using the normal distribution, it is found that there are 68 students with scores between 72 and 82.

<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.

In this problem, the mean and the standard deviation are given, respectively, by:

\mu = 72, \sigma = 10

The proportion of students with scores between 72 and 82 is the <u>p-value of Z when X = 82 subtracted by the p-value of Z when X = 72</u>.

X = 82:

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

Z = \frac{82 - 72}{10}

Z = 1

Z = 1 has a p-value of 0.84.

X = 72:

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

Z = \frac{72 - 72}{10}

Z = 0

Z = 0 has a p-value of 0.5.

0.84 - 0.5 = 0.34.

Out of 200 students, the number is given by:

0.34 x 200 = 68 students with scores between 72 and 82.

More can be learned about the normal distribution at brainly.com/question/24663213

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You find a point at the intersection of a plane and line.

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