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3 years ago

Calculate the slope between the coordinates (-2,3) and (2,-1) using the slope formula.

Mathematics

1 answer:

matrenka [14]3 years ago

7 0

Answer:

slope = -1

Step-by-step explanation:

First, you need to know the slope formula: <u>y2 - y1</u>

x2 - x1

Now recognize the first point (-2,3) as (x1,y1) and the second point (2,-1) as (x2,y2)

Now that you have done that, plug in the numbers into the slope equation.

Which should look like this: <u>-1 - 3</u>

2 - -2

Now that your equation looks like this, recognize the denominator, we should know that a negative plus a negative equals a positive. So instead of subtracting the denominator of the equation, we are going to add the two numbers together, because x1 is negative. Now solve, you should get the answer -1.

<u>-1 - 3</u> <u>-4</u> = -1

2 + 2 4

Hope this was helpful!

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Which statement accurately describes the movement of an object under a translation vector (-3)? The object moves 2 units down an

statuscvo [17]

The object moves 2 units to the left and then 3 units up.

<h3>Translation of vectors</h3>

Translation is a transformation technique used to change the position of an object on the xy-plane.

Given the translation vector (-2, 3), this translation shows a movement of an object to the left by 2units and 3 units in the upward direction

Learn more on translation here: brainly.com/question/12861087

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2 years ago

3/4 over 2 please help me

NikAS [45]

Answer:

3/2

Step-by-step explanation:

(3/4)/2

3/4*2

3/2

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3 years ago

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One year josh had the lowest ERA (earned-run average, mean number of runs yielded per nine innings pitched) of any male pitche

Anna11 [10]

Answer:

Josh's ERA had a z-score of -3.26.

Alice's ERA had a z-score of -1.11.

Due to the lower z-score(ERA is a stat that the lower the better), Josh had a better year relative to his peers.

Step-by-step explanation:

Z-score:

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.

Josh:

ERA of 2.89, mean of 5.083, standard deviation of 0.672. So

$X = 2.89, \mu = 5.083, \sigma = 0.672$ , and the z-score is:

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

$Z = \frac{2.89 - 5.083}{0.672}$

$Z = -3.26$

Josh's ERA had a z-score of -3.26.

Alice:

ERA of 3.31, mean of 4.032, standard deviation of 0.649. So

$X = 3.31, \mu = 4.032, \sigma = 0.649$ , and the z-score is:

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

$Z = \frac{3.31 - 4.032}{0.649}$

$Z = -1.11$

Alice's ERA had a z-score of -1.11.

Which player had the better year relative to their peers, josh or alice ?

Due to the lower z-score(ERA is a stat that the lower the better), Josh had a better year relative to his peers.

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3 years ago

A construction company is setting up signs on 2 miles of road. if the company places a sign every 1/4 mile, how many signs would

Degger [83]

They would use 8 signs because one mile in this case is broken up into quarters so in a mile it would have 1/4 1/2 3/4 and 1 mile times that by two because they are placing signs for 2 miles so 4+4= 8

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4 years ago

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The coordinates of a point on a coordinate grid are (-3, 7). The point reflected across the x-axis to obtain a new point. The co

bagirrra123 [75]

Hello :)

The coordinates of thr reflected point are (-3, -7)

Attached is the graph

Hope this helps!

6 0

3 years ago