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wariber [46]
3 years ago
12

An Air Conditioner uses 850 Watts of electricity and local emissions from electricity produce 1.37 pounds of CO2 per kWh. If you

open a window instead of using the AC for 6 hours, how many pounds of CO2 would you keep from entering the atmosphere?
Mathematics
1 answer:
Zina [86]3 years ago
7 0

Answer: 6,987,000 pounds fo CO₂ per kWh.

Step-by-step explanation: <u>Quilowatt</u>-<u>hour</u> <u>(kWh)</u> is a unit of energy that measures the amount of energy expended in 1 hour.

The AC uses 850 Watts, which in kW is 850,000 kW

If you leave the AC on for 6 hours, it will consume

850,000(6) = 5,100,000 kWh

Eletricity produces 1.37 pounds of CO₂ per kWh, then in 5,100,000 kWh:

1.37 \frac{pounds}{kWh}.(5,100,000kWh) = 6,987,000 pounds

If you open a window for 6 hours, you would keep 6,987,000 pounds of CO₂ for entering the atmosphere.

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A cone has a diameter of 18 in. and a height of 14 in.
Bond [772]
Cone's volume is V =  \frac{1}{3}Sh
where    S - surface area,  h - height
Surface area =  \pi r^2

r = 18/2=9
h= 14
π = 3.14
V= \frac{1}{3}  \pi r^2h= \frac{1}{3} *3.14*9^2*14= \frac{1}{3} *3.14*81*14=27*14*3.14[/tex]
V = 1186.92 in.^3


6 0
3 years ago
a. Nick deposits money in a Certificate of Deposit account (CD). The balance (in dollars) in his account t years after making th
ANEK [815]

Answer:

(1.06)0 = 1  and positive powers of 1.06 are larger than 1, thus the minimum value N(t) attains, if t≥0, is 400.

From the point of view of the context, a CD account grows in value over time so with a deposit of $400 the value will never drop to $399.

4 0
2 years ago
Find inverse of y=1/2x+3
yKpoI14uk [10]

Answer:  f⁻¹(x)=2x-6

Step-by-step explanation:

To find the inverse of an equation, you replace y with x and x with y. Then, you solve for y.

y=1/2x+3          [replace y with x and x with y]

x=1/2y+3          [subtract both sides by 3]

x-3=1/2y           [multiply both sides by 2]

y=2(x-3)            [distribute]

y=2x-6

Now, we know the inverse function is f⁻¹(x)=2x-6.

8 0
3 years ago
(4ab - 8a 2 + 12ac) ÷ 4a
ioda

we are given

\frac{(4ab-8a^2+12ac)}{4a}

we can see that

4a is in multiple in numerator

so, we can factor it out

\frac{4a(b-2a+3c)}{4a}

now, we can cancel 4a

and we get

(b-2a+3c).............Answer

7 0
3 years ago
(5e^2- e - 7) - (-2e^2+ 3e + 4)
pochemuha

Answer:

7e^2-4e-11

Step-by-step explanation:

(5e^2-e-7)-(-2e^2+3e+4)

5e^2-(-2e^2)-e-3e-7-4

5e^2+2e^2-4e-11

7e^2-4e-11

4 0
3 years ago
Read 2 more answers
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