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SCORPION-xisa [38]
4 years ago
7

The formula for wind chill (in degrees Fahrenheit) is given byC = 35.74 + 0.6215T ? 35.75v0.16 + 0.4275Tv0.16 where is the wind

speed in miles per hour and is the temperature in degrees F. The wind speed is miles per hour and the temperature is 8° ± 3°. Use dC to estimate the maximum possible propagated error and relative error in calculating the wind chill. dC= ± ______. dC/C= ± ______.
Mathematics
1 answer:
PIT_PIT [208]4 years ago
4 0

Answer:

dC =0.6899T + 30.02

dC/C = (0.6899T + 30.02)/(35.74 + 0.6215T - 35.75V^0.16 + 0.4275Tv^0.16

Step-by-step explanation:

C= 35.74 + 0.6215T - 35.75v^0.16 + 0.4275Tv^0.16

dC = 35.74 + 0.6215T - (35.75×0.16) +:(0.4275×0.16)

dC = 35.74 + 0.6215T - 5.72 + 0.684T

dC = 0.6899T + 30.02

dC/C = (0.6899 + 30.02)/(35.74 + 0.6215T - 35.75Tv^0.16 + 0.4275Tv^0.16

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For a button to fit through its buttonhole, the hole needs to be the size of the button's diameter. What size buttonhole is need
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Diameter is 2.36 cm.

Given:
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7 0
3 years ago
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A motorboat travels 168 kilometers in 4 hours going upstream. It travels 280 kilometers going downstream in the same amount of t
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Answer:

The speed of the boat is 56 km/hr

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Step-by-step explanation:

We are given the following;

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We are required to determine the speed of the boat in still water and the speed of the current.

We are going to take;

Speed of the boat as = x km/hr

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We can determine the speed of the boat upstream;

Speed = Distance ÷ time

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But, the speed upstream is given by (x - y) km/hr

Therefore; ( x-y) km/hr = 42 km/hr ......................... Eqn 1

Speed of the boat down stream

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But, the speed downstream is given by (x+y) km/hr

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Solving Eqn 1 and Eqn 2 simultaneously;

x - y = 42

x + y = 70

Eliminating x

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x = 42 + y

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Therefore, the speed of the boat is 56 km/hr while the rate of the current is 14 km/hr

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0.9

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