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2 years ago

Explain your answer !! Have a nice day

Mathematics

1 answer:

geniusboy [140]2 years ago

5 0

1. keep the same

2. y=3/2y-13

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The nile river, the longest river in the world, is 66.7x100 kilometers long. What is the nile's length?

kvasek [131]

Well if you multiply 66.7 x 100 you get 6,670.0. When multiplying by numbers like 10, 100, 1,000, etc, just simply transfer the 0's. So in this case, there are 2 0's in 100, so you add 2 of the 0's behind 66.7. So when you add the 2 of the 0's you get 6,670.0 which should be your answer.

4 0

3 years ago

Could somebody help me im slow sorry

Mars2501 [29]

Answer:

I'd say multiply the numerators then the denominators and at the end simplify at least thats how I multiply fractions :)

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2 years ago

Please help I cant fail this math test thank you I appreciate it

Marta_Voda [28]

Answer:

Step-by-step explanation:

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3 years ago

HELP ME POR FAVORRRRR

11Alexandr11 [23.1K]

Answer:

Ba/De = Bc/Df

Step-by-step explanation:

Find there color in order to see what angle is equal to that

Hope this helps

Sorry if it was late

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3 years ago

A wind turbine is located at the top of a hill where the wind blows steadily at 12 m/s, and stands 37 m tall. The air then exits

marta [7]

Answer:

Power generated = 4.315 kW

Step-by-step explanation:

Given,

speed of wind when enters into the turbine, V = 12 m/s

speed of wind when exits from the turbine, U = 9 m/s

mass flow rate of the wind, m = 137 kg/s

According to the law of conservation of energy

Energy generated = change in kinetic energy

Since, the air is exiting at same elevation. So, we will consider only kinetic energy.

Energy generated in one second will be given by,

$E\ =\ \dfrac{1}{2}.mV^2-\dfrac{1}{2}.m.U^2$

$=\ \dfrac{1}{2}\times 137\times (12)^2-\dfrac{1}{2}\times 137\times (9)^2$

=4315.5 J

= 4.315 kJ

So, energy is generated in one second = 4.315 kJ

Power generated can be given by,

$P\ =\ \dfrac{\textrm{energy generated}}{time}$

And the energy is generated is already in per second so power generated will be 4.315 kW.

8 0

3 years ago