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horsena [70]
3 years ago
5

Write 2687 in expanded form

Mathematics
2 answers:
kenny6666 [7]3 years ago
7 0
2000+600+80+7 is the answer
Masja [62]3 years ago
5 0
The answer is
2000+600+80+7
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An airplane with an air speed of 165 mph is headed 210°. If the plane encounters a 15 mph wind from the west, find the ground sp
mestny [16]
Since a calculator is involved in finding the answer, it makes sense to me to use a calculator capable of adding vectors.

The airplane's ground speed is 158 mph, and its heading is 205.3°.

_____
A diagram can be helpful. You have enough information to determine two sides of a triangle and the angle between them. This makes using the Law of Cosines feasible for determining the resultant (r) of adding the two vectors.
.. r^2 = 165^2 +15^2 -2*165*15*cos(60°) = 24975
.. r = √24975 ≈ 158.03
Then the angle β between the plane's heading and its actual direction can be found from the Law of Sines
.. β = arcsin(15/158.03*sin(60°)) = 4.7°
Thus the actual direction of the airplane is 210° -4.7° = 205.3°.

The ground speed and course of the plane are 158 mph @ 205.3°.

4 0
3 years ago
Please help I’ll give brainliest!!!
solong [7]

Answer:

the 3 one

Step-by-step explanation:

3 0
3 years ago
(05.01)
choli [55]

Step-by-step explanation:

<u>The graph of a system of parallel lines will have no solutions. </u>

  • Always

Because they will never intersect, having same slopes.

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<u>The graph of a system of equations with different slopes will have no solutions. </u>

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Because they will intersect exactly once, having different slopes.

6 0
2 years ago
Read 2 more answers
Simplify the given expression. (18+ - 8)2​
JulsSmile [24]

Answer:

20

Step-by-step explanation:

Our expression:

2 * (18 + - 8)

Plus then minus (+ -) is the same as just minus ( - )

Some examples:

1 + (+ 1) = 2

1 + (- 1) = 0

1 - (+ 1) = 0

1 - (- 1) = 2

Thus, 18 + - 8 is the same as 18 - 8

2 * (18 + - 8) =

= 2 * (18 - 8) =

= 2* (10) =

= 2 * 10 =

= 20

Answer: 20

6 0
3 years ago
-Ready Understand On Earth Day, 40 people volunteert are high-school students. The coordi in high school. ). Write a fraction to
Elden [556K]

Answer:

1/40

Step-by-step explanation:

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3 years ago
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