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3 years ago

Find the coordinates of d if e (-6,4) Is the midpoint of df and f has coordinates (-5,-3)

Mathematics

1 answer:

Oksanka [162]3 years ago

4 0

Answer:

Step-by-step explanation:

Let the coordinates of d be (x,y)

The midpoint of (x,y) and (-5,-3) is equal to ((-5+x)/2, (-3+y)/2)

this should be equal to the coordinates of e, (-6,4)

we have (-5/2+x/2, -3/2+y/2)

-5/2+x/2 = -6

-5 + x = -12

x = -7

-3/2+y/2 = 4

-3+y = 8

y = 11

Therefore the coordinates of d are (-7,11)

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Answer:

7.583333 / 7 7/12

Step-by-step explanation:

2 1/3 × 3 1/4

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7/3 * 13/4

=91/12

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3 years ago

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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4 years ago

Suppose a white dwarf star has a diameter of approximately 1.8083 to the power of 4 km. Use the formula 4n to the power of 2 to

aivan3 [116]

ANSWER:

The surface area of the star is 3.2700 x $10^{8}$ square kilometres.

EXPLANATIONS:

Diameter of the star = 1.8083 x $10^{4}$ Km.

Surface area of the star = 4 $n^{2}$

Where n is the radius of the star.

So that;

n = $\frac{ 1.8083 * 10^{4} }{2}$

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3 years ago