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Dmitry_Shevchenko [17]
3 years ago
15

HELP ASAP EXTRA POINTS -42-6n=-30 solve for n.

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
4 0

the answer to your question is n = -2

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2 planes leave the airport at the same time. their speeds are 140 mph and 170 mph and the angle between their courses is 25 degr
Damm [24]

Answer:

183.27miles

Step-by-step explanation:

Note that we are considering two planes.

Plane 1

Speed = 140 mph

Time = 2.5 hours

Distance = ?

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Speed = 170 mph

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Distance = 170×2.5

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From cosine rule

c^2 = a^2 + b^2 − 2abcos(tetha)

Where a = 350

b = 425miles

c^2 = 350^2+425^2-2(350×425)(cos25)

c^2 = 122500+180625-297500(0.906)

c^2 = 303125-269535

c^2 = 33590

C = √33590

C = 183.27miles

The distance they flew apart after 2.5hrs is 183.27miles

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2 years ago
Solve and show working for 1/2÷8
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