Find the slope between each pair of points. (-7, 8) and (-7, 5)

Mathematics

2 answers:

Y_Kistochka [10]3 years ago

6 0

5-8= -3
-7--7=0
m=0
The slope of the two points is 0

hichkok12 [17]3 years ago

6 0

X change: -7 is -7 is 0.
y change: 8 to 5 is -3.
Since the slope is the change in x over the change in y, the slope is:
0/-3

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Final exam scores are normally distributed with a mean of 74 and a standard deviation of 6. Approximately, what percentage of fi

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Answer:

81.86%

Step-by-step explanation:

We have been given that final exam scores are normally distributed with a mean of 74 and a standard deviation of 6.

First of all we will find z-score using z-score formula.

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

$z=\frac{68-74}{6}$

$z=\frac{-6}{6}=-1$

Now let us find z-score for 86.

$z=\frac{86-74}{6}$

$z=\frac{12}{6}=2$

Now we will find P(-1<Z) which is probability that a random score would be greater than 68. We will find P(2>Z) which is probability that a random score would be less than 86.

Using normal distribution table we will get,

$P(-1$