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3 years ago

a number multiplied by 4, add -4 to the product and then take 1/3 of the sum, the result is -6. find the number

Mathematics

1 answer:

matrenka [14]3 years ago

5 0

Answer:

-7/2

Step-by-step explanation:

lets do math:

this looks pretty hard right,

so lets say our number is called x

this is our equation:

-6=(4x-4)1/3

divide -6 by 1/3 because why not

=-18

-18=4x-4

add 4 to both sides because im smart

-14=4x

divide both side by 4 because im smart again

x=-7/2

lemme check this because i make mistakes a lot.

im right

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A solenoid has a magnetic field of magnitude 0.50T when carrying a current of 400 A. The solenoid is 8.0 m long. What is the num

mixer [17]

Answer:

The correct answer is "995.22 turns".

Step-by-step explanation:

The given values are:

Magnetic field,

B = 0.50 T

Current,

i = 400 A

Length of solenoid,

L = 8.0 m

As we know,

⇒ $B=\mu_0ni$

then,

⇒ $n=\frac{B}{\mu_0i}$

On substituting the given values, we get

⇒ $=\frac{0.50}{4 \pi\times 10^{-7}\times 400}$

⇒ $=\frac{0.50}{5.024\times 10^{-4}}$

⇒ $=995.22 \ turns$

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Ahat [919]

Answer:

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3 years ago

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amid [387]

Answer:

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Step-by-step explanation

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