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ladessa [460]
3 years ago
13

A light bulb consumes 2400 watt-hours per day. How long does it take to consume 13800 watt-hours?

Mathematics
2 answers:
Anni [7]3 years ago
8 0
Very simple. Just divide 13800 by 2400. Your answer will be 5.75 hours
or 5 hours 45 minutes.
olga55 [171]3 years ago
4 0
It will take about 5.75 days. basicly 5 days and 18 hours.
divide hours by total, and then find out 75 percent of 24
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A rectangular prism must have a base with an area of no more than 27 square meters. The width of the base must be 9 meters less
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Answer:

The maximum height of the prism is 12\ m

Step-by-step explanation:

Let

x------> the height of the prism

we know that

the area of the rectangular base of the prism is equal to

A=L*W

A\leq 27\ m^{2}

so

L*W\leq 27 -------> inequality A

W=x-9 ------> equation B

L=W+6 -----> equation C

Substitute equation B in equation C

L=(x-9)+6

L=x-3 ------> equation D

Substitute equation B and equation D in the inequality A

(x-3)*(x-9)\leq 27-------> using a graphing tool to solve the inequality

The solution for x is the interval---------->[0,12]

see the attached figure

but remember that

The width of the base must be 9 meters less than the height of the prism

so

the solution for x is the interval ------> (9,12]

The maximum height of the prism is 12\ m

8 1
3 years ago
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What’s the least common multiple of 12 and 2
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7 0
2 years ago
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