Number 3 is 1:3 but I don't know what 4 is I can't see the whole problem
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
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aii) The cost of electricity is the cost of heating half the water usage, so is ...
(0.20 kWh/gal)(1/2)(73,000 gal/yr)($0.10/kWh) = $730/yr
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b) The current daily cost of electricity for heating water is ...
($730/yr)/(365 days/yr) = $2/day
If the cost is cut in half, it will be $1 per day. That means the savings is $1 per day, so it will take 1000 days to recover the $1000 initial cost. (Effectively, the average cost for the first 1000 days is the same as if the water heater had not been replaced.)
Answer:
−(2x)/(5)−9
Step-by-step explanation:
Replace the function designators in g−1x
with the actual functions.
(3/5x−9)−1x
Simplify (3/5x−9)−1x
−(2x)/(5)−9
Answer:
4 Miles
Step-by-step explanation:
Yellow cab taxi charges a $1.75 + 0.65 =$2.40
$2.40 x 2 = $4.80
$2.40 x 3 = $7.20
$2.40 x 4 = $9.60
Therefore, Kim can travel without exceeding his limit is 4 miles.
