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2 years ago

The midpoint of AB is M (-5,0). If the coordinates of A are (-3,3), what are the coordinates of B?

Mathematics

1 answer:

asambeis [7]2 years ago

8 0

Answer:

(-7,-3)

Step-by-step explanation:

From A to M, the x value went down 2. If it goes down another 2, it will be at -7.

From A to M, the y value went down 3. If it goes down another 3, it will be at -3.

(-7,-3)

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2 years ago

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2 years ago

Two concentric circles with different radii share how many common tangent lines?

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The answer is a.0

Concentric means these circles would have the same center, thus, the smaller circle must be inside the bigger circle. Any tangent line to the smaller circle wont be a tangent line to the bigger circle, since that tangent line would intersect at the bigger circle at 2 points. Any tangent line to the big circle will not touch the small circle... so the answer would be 0.

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3 years ago

Help !!!!! (4-10i)+(7-3i) A. -3-13i B. -3-7i C. 11-7i D. 11-13i

Oksana_A [137]

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5 0

2 years ago

The distribution of the annual incomes of a group of middle management employees approximated a normal distribution with a mean

kondor19780726 [428]

Answer:

68% of the incomes lie between $36,400 and $38,000.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $37,200

Standard Deviation, σ = $800

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

Empirical rule:

Almost all the data lies within three standard deviation of mean for a normally distributed data.
About 68% of data lies within one standard deviation of mean.
About 95% of data lies within two standard deviation of mean.
About 99.7% of data lies within three standard deviation of mean.

Thus, 68% of data lies within one standard deviation.

$\mu \pm \sigma\\=37200 \pm 800\\=(36400,38000)$

Thus, 68% of the incomes lie between $36,400 and $38,000.

5 0

2 years ago