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Phoenix [80]
3 years ago
11

WILL MARK

Mathematics
1 answer:
Alex777 [14]3 years ago
5 0

Answer:

  about 3.492

Step-by-step explanation:

The distance between points in polar coordinates can be found using the Law of Cosines. For vector magnitudes a and b, and angular difference C, the distance between them (c) can be found from ...

  c^2 = a^2 +b^2 -2ab·cos(C)

  = 7^2 +5^2 -2(7)(5)cos((217/180π -(-23/36)π)

  = 74 -70cos(332°) ≈ 12.1937

  c = √12.1937 ≈ 3.492

The distance between the given points is about 3.492 units.

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Andrew [12]

Answer:

5y + 20

Step-by-step explanation:

5 (y+ 4) =

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5y + 20

<em>Hope that helps!</em>

<em>-Sabrina</em>

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2 years ago
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at 1:30 in the afternoon an old freight train and a new dart express train pull out of the new garland station going in opposite
zalisa [80]

Answer:

V_{E} = -22.5 / 15 = 1.5 miles/minute\\V_{F} = 7.5 / 15 = 0.5 miles/minute

Step-by-step explanation:

To answer this problem, we must bear in mind that the express train travels 3 times faster than the freight train.

If we call F the distance that the freight train travels and we call E at the distance that the express train travels, we must have the distance between them after 15 minutes it must be 30 miles.

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3 0
3 years ago
Pls Help me answer these questions. Brainliest for the correct person who answers each question correctly.
ahrayia [7]
Q1.) A. 12
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Answer:

Ans. = 18

Step-by-step explanation:

= -1 (-1)(-3)(-6)

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=18

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