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cestrela7 [59]
2 years ago
14

Two shapes that represent the cross-sections

Mathematics
1 answer:
777dan777 [17]2 years ago
3 0

Answer:

it's the square and the rectangle

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The Cobb family of Fremont is looking at ways to decrease their home water and energy usage. Their current electric hot-water he
OverLord2011 [107]

Answer:

  ai) 73000 gal/yr

  aii) $730 per year

  b) 1000 days

Step-by-step explanation:

ai) The water usage per day is ...

  (4 showers/day)(10 min/shower)(5 gal/min) = 200 gal/day

Then the usage per year is ...

 (200 gal/day)(365 days/yr) = 73,000 gal/yr

__

aii) The cost of electricity is the cost of heating half the water usage, so is ...

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__

b) The current daily cost of electricity for heating water is ...

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3 years ago
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