3 years ago

A laptop computer uses 78.0 W of power. If it runs for 10.0 minutes, how much energy does it use? (Answer will be in Joules)

1 answer:

5 0

Energy=power x time
time must be in seconds
10mins = 600 seconds
energy=78.0 x 600
energy= 46,800 Joules

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REY [17]

Answer:

$x=\sqrt{10}$

Step-by-step explanation:

The given equation is :

$5-2x^2=-15$

We need to solve it using inverse operations.

Subtract 5 from both sides of the equation.

$5-2x^2-5=-15-5\\\\-2x^2=-20\\\\2x^2=20\\\\x^2=10\\\\x=\sqrt{10}$

So, the solution of the given equation is $x=\sqrt{10}$ .

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