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3 years ago

What are the coordinates of point (-2, -4) after a 180 degree rotation?

Mathematics

1 answer:

Monica [59]3 years ago

3 0

Answer:

(2, 4)

Step-by-step explanation:

Anytime you rotate a point 180° about the origin, the x-coordinate and y-coordinate become their opposites.

(x,y) becomes (-x,-y)

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3 years ago

Candice is preparing for her final exam in Statistics. She knows she needs an 74 out of 100 to earn an A overall in the course.

Salsk061 [2.6K]

Answer:

Hence the correct option is option b) Yes, the upper level of one standard deviation is 72.

A score of 74 is not within one standard deviation of the mean.

Step-by-step explanation:

Here the given details are,

Mean = 68

SD = 4

Distribution is normal.

Z-score for x = 74 is given as below:

$Z = (X - mean)/SD\\Z = (74 - 68)/4\\Z = 1.5$

So, the score of 74 is 1.5 standard deviations from the mean.

$Mean + 1\timesSD = 68 + 1\times4 = 72Mean - 1\timesSD = 68 - 1\times4 = 64$

Therefore the score is not lies between 64 and 72.

Yes, the upper level of one standard deviation is 72.

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3 years ago

How to graph equasions

saw5 [17]

Hi there :) The best way to graph equations and to follow these 3 steps

<span>1. Locate the y-intercept on the graph and plot the point.
2. From this point, use the slope to find a second point and plot it.
3. Draw the line that connects the two points.

Please mark brainliest, thanks!</span>

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