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2 years ago

What is the rule for finding the coordinates of an image reflected over the line y=-x?

Mathematics

1 answer:

Degger [83]2 years ago

6 0

Answer:

When you reflect a point across the line y = x, the x-coordinate and y-coordinate change places. If you reflect over the line y = -x, the x-coordinate and y-coordinate change places and are negated (the signs are changed).

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Compare the value of 495,123 and 63,129

Vesnalui [34]

63,219 is overall the lower value, but has the greater hundreds and ones place.

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3 years ago

The school colors at Mission Middle School are green and white. Kendra volunteered to make cupcakes

Effectus [21]

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3 years ago

The miniature gold scores for 7 friends are 23, 30, 32, 35, 14, and 23. What is the mean golf score for this group of friends ?

Andrej [43]

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3 years ago

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3 years ago

A Regional College uses the SAT to admit students to the school. The university notices that a lot of students apply even though

Aliun [14]

Answer:

0.191 is the probability that a group of 12 randomly selected applicants would have a mean SAT score that is greater than 525 but below the current admission standard of 584.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 500

Standard Deviation, σ = 100

n = 12

We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(greater than 525 but 584)

Standard error due to sampling =

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{100}{\sqrt{12}}$

$P(525 < x < 584) = P(\displaystyle\frac{525 - 500}{\frac{100}{\sqrt{12}}} < z < \displaystyle\frac{584-500}{\frac{100}{\sqrt{12}}}) = P(0.866 < z < 2.909)\\\\= P(z \leq 2.909) - P(z < 0.866)\\= 0.998 - 0.807 = 0.191 = 19.1\%$

$P(525 < x < 584) = 19.1\%$

0.191 is the probability that a group of 12 randomly selected applicants would have a mean SAT score that is greater than 525 but below the current admission standard of 584.

3 0

3 years ago