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Sever21 [200]
3 years ago
15

In a certain city, electricity costs $0.15 per kwh. what is the annual cost for electricity to power a lamp post for 6.5 hours p

er day with a 100 watt incandescent light bulb
Mathematics
1 answer:
konstantin123 [22]3 years ago
3 0

solution:

power consumption in 1 day=100\times 6.5\times365\\=237250watt hour\\1 watt hour=0.001kw hour\\so,237250kw hour=237.25\\1watt hour=\$ 0.15\\so,237.250kw hour=237.25\times 0.15=\$ 35.58

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A high school band asked a number of students whether they would like blue, gold, or both for the uniforms for the band. The res
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Given a Venn diagram showing the number of students that like blue uniform only as 32, the number of students that like gold uniform only as 25, the number of students that like blue and gold uniforms as 12 and the number of students that like neither blue nor gold uniform as 6.

Thus, the total number of students interviewed is 75.

Recall that relative frequency of an event is the outcome of the event divided by the total possible outcome of the experiment.

From the relative frequency table, a represent the relative frequency of the students that like gold but not blue.
From the Venn, diagram, the number of students that like gold uniform only as 25, thus the relative frequency of the students that like gold but not blue is given by
\frac{25}{75} = \frac{1}{3}=0.33=33\%

Therefore, a = 33% to the nearest percent.

Similarly, from the relative frequency table, b represent the relative frequency of the students that like blue but not gold.
From the Venn, diagram, the number of students that like blue uniform only as 32, thus the relative frequency of the students that like gold but not blue is given by
\frac{32}{75} = 0.427=42.7\%

Therefore, b = 43% to the nearest percent.
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3 years ago
Rectangle MNOP has diagonals NP and MO. Determine the length of NP if NP = 7x - 4 and MO = 3x + 19.
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Answer:

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3 years ago
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Ralph Jordan recently bought a new lawnmower for $228,00. If he paid 6% sales tax on the lawnmower, what was the total cost of t
hodyreva [135]
Is the 6% already added or am I supposed to add the tax
4 0
4 years ago
the 23 members of the school jazz band are trying to raise at least $1,800 to cover the cost of traveling to a competition . the
sukhopar [10]
If you would like to find the inequality to solve to find the amount that each member should raise to meet the goal, you can do this using the following steps:

x ... the amount of money that each member should raise
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x * 23 >= 1,800 - 750
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x >= 1,050 / 23
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The correct result would be: <span>x * 23 members + $750 >= $1,800.</span>
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3 years ago
I need the answer to the problem
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Only a guess but 69.5 7
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