A 100-W driveway light bulb is on 10 hours per day. If the power company charges 10¢ for each kilowatt-hour of electricity used, estimate the yearly cost to operate the bulb if it is used every day for a 365-day year.

36.50$

Step-by-step explanation:

The power of the light bulb in this problem is

P = 100 W = 0.1 kW

And the light bulb is operated for a time of

t = 10 hours

per day.

The light bulb is operated over 1 year (365 days), so the number of hours of operation is:

So the total energy consumed by the light bulb is

We know that the cost of operation is

p = 10 cents/kWh

Therefore, the total cost will be:

So, 3650 cents, or 36.50$.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

correct answer is option b.

step-by-step explanation:

the true statement about geometric figure is option b that is one line can be drawn through all three points.

if three points are on the same plane, they can be connected by a line.