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3 years ago

Is an imaginary "line" from the Earth to the Moon a line, a ray, or a segment? and WHY?

Mathematics

1 answer:

sesenic [268]3 years ago

7 0

Answer:

Segment

Step-by-step explanation:

It is a segment because it has two endpoints (the Earth and Moon). If it was a ray, it would go on forever in one direction. It doesn't, so the imaginary line is a segment.

The first image is a segment, the second is a ray.

Hope this helps. :)

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9:45 on Tuesday Questions

Harlamova29_29 [7]

Answer:

See below

Step-by-step explanation:

<u>Angle 4 is exterior angle of the triangle and as per definition:</u>

∠4 = ∠1 + ∠2

<u>Angle 4 is supplementary with angle 3, they sum up to straight angle of 180°</u>

∠4 = 180° - ∠3

7 0

2 years ago

Suppose a tub has the shape of an elliptical paraboloid given by z = ax2+by2 (where a, b are some positive constants). If a marb

Umnica [9.8K]

Answer:

It would roll in this direction.

$\nu = (-a/\sqrt{a^2+b^2},-b/\sqrt{a^2+b^2})$

Step-by-step explanation:

It would roll to the direction of maximum decrease, which is the -1 times the direction of maximum increase, which is given by the gradient of the function.

Since

$z = ax^2 + by^2$

For this case, the gradient of your function would be

$\nabla z = (2ax , 2by)$

And -1 times the gradient of your function would be

$-\nabla z = (-2ax , -2by)\\$

Then, at

$(1,1,a+b),\\x = 1 \\y = 1$

So it would go towards

$v = (-2a,-2b)$

The magnitud of that vector is

$|v| = 2\sqrt{a^2+b^2}$

and to conclude it would roll in this direction.

$\nu = (-a/\sqrt{a^2+b^2},-b/\sqrt{a^2+b^2})$

6 0

3 years ago

Svp aidez moi )

34kurt

Answer:

Dans 3 ans l’âge du père sera le triple de celui de sa fille

Step-by-step explanation:

X= années qui doivent passer

3(12+X ) = 42 +X

36+ 3X = 42 +X

2X = 6

X = 3

La fille 15 ans

Le père 45 ans (15x3=45)

3 0

3 years ago

1. The chairman of the community bazaar is assigning people to chair committees. How many different

pickupchik [31]

Answer:

720

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

What is the value of the equation -2/3x + 9 = 4/3 x -3?

MArishka [77]

Answer:

x = 6

Step-by-step explanation:

$\frac{-2}{3}x+9=\frac{4}{3}x-3\\\\\frac{-2}{3}x-\frac{4}{3}=-3-9\\\\\frac{-2-4}{3}x= - 12\\\\\frac{-6}{3}x = -12\\\\ -2x -12\\\\x = \frac{-12}{-2}\\\\x = 6$

3 0

2 years ago