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1. The formula C=Wtc/1000 represents the cost C in cents to operate an electrical device, where W is the wattage of the device, t is the time in hours that the device is in use, and c is the cost in cents per kilowatt-hour. Solve the formula for W


2. If the cost to operate a device for 5 hours is $0.1875 and the cost per kilowatt hour is $0.15, find the wattage of the device.

I need this done ASAP if I get it CORRECT I PASS my TEST
PLS QUICK
Please PLEASE I NEED THIS NOW!!!
ok i was too anxious and i clicked accept answer and got it partially wrong but ill like the answer please

Respuesta :

Answer:

250 Watts

Step-by-step explanation:

The term in the numerator states W times t times c. After eliminating the denominator, which operation will you use to isolate W?

MrRoyal

The true statements are:

  • The formula for W is [tex]W = \frac{1000C}{tc}[/tex]
  • The wattage of the device is 250

The formula is given as:

[tex]C = \frac{Wtc}{1000}[/tex]

(a) Solve for W

Start by multiplying both sides by 1000

[tex]1000C = Wtc[/tex]

Divide both sides of the equation by tc

[tex]\frac{1000C}{tc} = W[/tex]

Rewrite the above equation as:

[tex]W = \frac{1000C}{tc}[/tex]

(b) The wattage of the device

Given that:

  • C =0.1875
  • t = 5
  • c = 0.15

The equation becomes

[tex]W = \frac{1000 \times 0.1875}{5 \times 0.15}[/tex]

[tex]W = 250[/tex]

Hence, the wattage of the device is 250

Read more about subject of formulas at:

https://brainly.com/question/790938

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