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Jobisdone [24]
3 years ago
13

Togo flew his ultralight plane to a Landing field 30 miles away. With the wind, the flight took three and a half hours.Returning

against the wind, the flight took 5 1/2 hours. Find the rate of the plane in still air in the rate of the wind.
Mathematics
2 answers:
Phoenix [80]3 years ago
7 0

Answer:

yes

Step-by-step explanation:

kherson [118]3 years ago
3 0

Answer:rate of the plane in still air is 7 mph

the rate of wind is 1.55 mph

Step-by-step explanation:

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

Let y represent the rate of wind.

Togo flew his ultralight plane to a Landing field 30 miles away. With the wind, the flight took three and a half hours. This means that total speed = (x + y) mph

Distance = speed × time

Therefore

30 = 3.5(x + y)

30 = 3.5x + 3.5y - - - - - - - - - 1

Returning against the wind, the flight took 5 1/2 hours. This means that the total speed would be

(x - y) mph

Therefore,

30 = 5.5(x - y)

30 = 5.5x - 5.5y - - - - - - - - - -2

Multiplying equation 1 by 5.5 and equation 2 by 3.5, it becomes

165 = 19.25x + 19.25y

105 = 19.25x - 19.25y

Adding both equations, it becomes

270 = 38.5x

x = 270/38.5

x = 7 miles per hour

30 = 5.5 × 7 - 5.5y

30 = 38.5 - 5.5y

5.5y = 38.5 - 30 = 8.5

y = 8.5/5.5 = 1.55 miles per hour

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lbvjy [14]

Answer:

Step-by-step explanation:

x^2 + 2x + 1 = 17

x^2 + 2x = 17 - 1

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x^2 + 2x + 1 = 16 + 1

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3 years ago
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defon

Answer:

180 is the answer

Step-by-step explanation:

Step-by-step explanation:

To find out areas of rectangles, you have to count the left side of the rectangle which is (12) and then count the bottom of the rectangle which is (15)

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3 years ago
Mr. Johnson currently has a square garden. He wants to redesign his garden and make it into a rectangle with a length that is 5
AlekseyPX

Answer:

Width of the rectangle = 10 feet

Length of the rectangle = 25 feet

Step-by-step explanation:

Perimeter of a rectangle = 2(length + width)

Let

Width of the rectangle = x feet

Length of the rectangle = 3x - 5 feet

Perimeter of the rectangle = 70 feet

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70 + 10 = 8x

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x = 80 / 8

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6 0
2 years ago
in a weakly connected graph. it is not possible to reach all other vertices from any one vertext (true) (false)
iVinArrow [24]
True it is true because you can reach the vertext at all times try it out my teacher told me right now check it our


4 0
3 years ago
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PLEASE HELP PLEASEEEE!!! Number 3
deff fn [24]
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6 0
3 years ago
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