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2 years ago

-3 • 2 • (-2) HELP fast

Mathematics

1 answer:

slava [35]2 years ago

3 0

Answer:

Step-by-step explanation:

-3 * 2 is -6

-6 * -2 is 12

because a negative times a negative is positive

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KATRIN_1 [288]

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A. 7x+11

Step-by-step explanation:

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2 years ago

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castortr0y [4]

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3 years ago

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Marizza181 [45]

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3 years ago

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strojnjashka [21]

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2 years ago

Wasted Water A faucet leaks 1 oz of water per minute. a) How many gallons of water are wasted in a year? (A gallon contains 128

dimaraw [331]

Answer:

a) 4106.25 gallons

b) $46

Step-by-step explanation:

We are given the following in the question:

Leakage rate of faucet = 1 oz per minute

Cost of water = $11.20 per 1000 gallons

1 gallon = 128 oz

a) water are wasted in a year

1 hour = 60 minutes

1 day = 24 hours

1 year = 365 days

$1\text{ year} = 365\times 24\times 60\text{ minutes}\\1\text{ year} = 525600\text{ minutes}$

Amount of water wasted =

$\text{Leakage rate}\times \text{Time}\\=1 \times 525600\\=525600\text{ oz}\\\\=\dfrac{525600}{128}\\\\=4106.25\text{ gallons}$

Thus, 4106.25 gallons of water is wasted every year.

b) additional money spent

$=\time{Cost}\times \text{Amount of water wasted}\\\\= \dfrac{11.20}{1000}\times 4106.25\\\\=45.99\$ \approx 46\$$

Thus, approximately $46 is the additional money spent on water bill.

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2 years ago