A line includes the points (-3,5) and (-20,-12). What is it’s equation in slope intercept form

Mathematics

2 answers:

AysviL [449]3 years ago

8 0

Answer:

y=x+8

Step-by-step explanation:

1. Use the slope formula to find slope

y2-y1/x2-x1

-12-5/-20--3

= -17/-17

= 1

2. Plug in the slope and of the coordinates into point-slope form

y-y1=m(x-x1)

y-5=1(x+3)

3. Distribute and add 5 to both sides.

y-5=1x+3

y=1x+8

ivolga24 [154]3 years ago

6 0

Answer: y=x+8. let me knw if you need the explanation :)

Step-by-step explanation:

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Test scores are normally distributed with a mean of 500. Convert the given score to a z-score, using the given standard deviatio

Bond [772]

Answer:

The percentage of students who scored below 620 is 93.32%.

Step-by-step explanation:

Problems of normally distributed samples are 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.

In this question, we have that:

$\mu = 500, \sigma = 80$