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inn [45]
3 years ago
8

How long is the wire that supports the tree? 5.6 ft 3.3 ft -

Mathematics
1 answer:
Nikolay [14]3 years ago
6 0
The answer is 2.3 feet
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Flying against the wind, an airplane travels 4000 kilometers in 5 hours. Flying with the wind, the same plane travels 5040 kilom
andriy [413]

Answer:the plane in still air is 904 km/h

the rate of the wind is 104 km/h

Step-by-step explanation:

Let x represent the rate or speed of the plane in still air.

Let y represent the rate or speed of the wind.

Flying against the wind, an airplane travels 4000 kilometers in 5 hours. This means that the total speed of the airplane would be (x - y) km/h

Distance = speed × time

Therefore

4000 = 5(x - y)

4000 = 5x - 5y - - - - - - - - -1

Flying with the wind, the same plane travels 5040 kilometers in 4 hours. This means that the total speed of the airplane would be (x + y) km/h. Therefore,

5040 = 4(x + y)

5040 = 4x + 4y - - - - - - - - - 2

Multiplying equation 1 by 4 and equation 2 by 5, it becomes

16000 = 20x - 20y

20160 = 20x + 20y

Subtracting, it becomes

- 4160 = - 40y

y = - 4160/-40

y = 104

Substituting y = 104 into equation 1, it becomes

4000 = 5x - 5 × 104

4000 = 5x - 520

5x = 4000 + 520

5x = 4520

x = 4520/5 = 904

7 0
3 years ago
When Alexis Ross works overtime (and hours over 40 hours a week), she is paid 1.5 times her regular hourly rate. Last week she w
Natali [406]

40 hours at 10.10 per hour = 404

10.10 x 1.5 = 15.15 overtime pay per hour

15.15 x 8 = 121.20


404 + 121.20 = $525.20 total

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3 years ago
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marissa [1.9K]

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3 years ago
Tan(x)=2
nydimaria [60]
<span>Tan(x)=2
Or for x=45 tan(x)=1
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3 years ago
How many edges does a cube has?<br> A.10<br> B 12<br> C 14<br> D 16
Serga [27]
B. 12 would be your answer
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3 years ago
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