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Helen
22 days ago
13

You can upgrade lighting at your factory to LED bulbs that cost $6.95 each and last an average of 5 years. It costs $3 in labor

to change a bulb. Over a 10-year period, about how much will it cost per year to install LED bulbs in 100 lamps and change the bulbs when they burn out?
Mathematics
2 answers:
babunello [8.4K]22 days ago
7 0

Answer: $200.00

Step-by-step explanation:

$6.95 plus $3.00 equals $9.95

Multiplying $9.95 by 100 bulbs gives $1,990

Finally, dividing $1,990 by $9.95 results in $200.00

To summarize, you start with the original cost of $6.95 along with $3 for labor, totaling $9.95. Then, multiply by 100 bulbs, leading to $1990, and divide by $9.95, yielding $200!

Inessa [9K]22 days ago
3 0
Each LED bulb, along with installation labor, is priced at
.. $6.95 +$3 = $9.95

For 100 bulbs over a span of 10 years, that equals (100*10) = 1000 bulb·years. At $9.95 per bulb, 5 bulb·years are obtained, and thus the projected total cost for 1000 bulb·years is
.. (1000 b·y)*($9.95/(5 b·y)) = $1990

In summary, for a decade, the installation and changes of 200 bulbs in 100 lamps amount to $1990. Therefore, the yearly cost is...
.. $1990/(10 yr) = $199/yr
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11 days ago
Which expression is equivalent to StartFraction 3 x Over x + 1 EndFractiondivided by x + 1?
AnnZ [9099]

Response:

Detailed Breakdown:

Forget all the words! Just apply the math.

\frac{3x/(x+1)}{x+1} = \frac{3x}{(x+1)^2}

5 0
17 days ago
A car entered a roundabout from Mason Avenue, traveled 280 feet, then turned onto Perry Street. If the roundabout has a diameter
Leona [9271]

Answer:

The rotation angle measures 214°.

Step-by-step explanation:

Arc length formula:

The arc length equals the radius multiplied by the central angle (in radians).

L= rθ

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r= Radius

θ= Central angle (in radians).

Given L= 280 feet and diameter =150 feet.

Radius =\frac{150}{2} feet =75 feet

L= rθ

\Rightarrow \theta =\frac{L}{r}

\Rightarrow \theta =\frac{280}{75} radians.

We know that,

π radian= 180°

\Rightarrow 1 \ radian= \frac{180^\circ}{\pi}

\Rightarrow \frac{280}{75} \ radian = \frac{180^\circ}{\pi}\times \frac{280}{75}

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26 days ago
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3 0
1 month ago
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3 0
26 days ago
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