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3 years ago

13

What is the slope of the line that contains the points (-1, - 5) and (2,1)?

1 answer:

timofeeve [1]3 years ago

7 0

Answer:

y = 2x + -3 (the slope of 2)

Step-by-step explanation:

I used DESMOS

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Mary and Jane both took PSY230 last semester but they were in two different sections taught by different professors. Mary's clas

Greeley [361]

Answer:

Due to the higher z-score, Jane did better in class.

Step-by-step explanation:

Z-score:

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:

Whoever's grade had the better z-score did better in class.

Mary's:

Mean of 85, standard deviation of 5, grade of 88. This means that $\mu = 85, \sigma = 5, X = 88$ . So

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

$Z = \frac{88 - 85}{5}$

$Z = 0.6$

Jane's

Mean of 80, standard deviation of 10, grade of 88. This means that $\mu = 80, \sigma = 10, X = 88$ . So

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

$Z = \frac{88 - 80}{10}$

$Z = 0.8$

Due to the higher z-score, Jane did better in class.

4 0

3 years ago

Football team had scores of 23, 15, 11, 29, and 17 in the last five games the team played. Which score is NOT a prime number?

exis [7]

Answer:

15

Step-by-step explanation:

15 is 5 * 3 so is not prime.

3 0

3 years ago

Read 2 more answers

IM GIVING AWAY 20 POINTS!!!

SOVA2 [1]

Answer:

D. To provide a contrast to the actual enormity of the Biltmore

Step-by-step explanation:

Usually, when something is in "quotes", it's used to indicate sarcasm, emphasis, or a direct quote. This indicated emphasis.

6 0

3 years ago

Read 2 more answers

(08.01 MC)Below are the data collected from two random samples of 500 American adults on the number of hours they spend doing le

Mazyrski [523]

Answer:

Dan is correct

Step-by-step explanation:

From the question, we have:

$Hours:1\ 2\ 3\ 4\ 5$

Required

The average

The average hour is calculated using:

$\bar x = \frac{\sum x}{n}$

So, we have:

$\bar x = \frac{1+2+3+4+5}{5}$

$\bar x = \frac{15}{5}$

$\bar x = 3$

<em>Dan calculated the mean as 3; while Bret calculated the mean as 4.</em>

<em>Hence, we can conclude that Dan s correct</em>

4 0

3 years ago

List factors of 35? Is it prime or composite?

Kisachek [45]

Answer:

1, 5, 7, and 35. It is composite.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers