Answer:
mCO₂ = 1.188 lb or simply 1.2 lb
Step-by-step explanation:
We need to use the following expression:
E = P * t
Where:
E: Energy in Kwh
P: Power in Watts
t: time in hours.
Applying this, with the given data we have:
E = 150 * 8
E = 1200 watts . h
Converting this value in kW we have:
E = 1200 watts * 1 kW/1000 watts = 1.2 kWh
In general terms, we have 0.99 pounds of CO₂ emissions per kWh, so with the obtained value we have:
mCO₂ = 0.99 * 1.2
<h2>
mCO₂ = 1.188 lb or simply 1.2 lb</h2>
Hope this helps
Answer:
<em>The length and width of the deck will be 11 meters and 9 meters respectively. </em>
Step-by-step explanation:
The length of the rectangular deck is meter and width is meter.
The perimeter of the deck should be 40 meters. So, the first equation will be...
The difference between twice the length and twice the width should be 4 meters. So, the second equation will be....
<u>Adding equation (1) and (2)</u>, we will get.....
<u>Now plugging this into equation (1)</u>, we will get....
So, the length and width of the deck will be 11 meters and 9 meters respectively.
Answer:
3. Y=3x+12
Explanation:
3 is used as the rate for whatever is for x
Given:
A metal is made from copper, zinc and lead in the ratio 13:6:1.
The mass of zinc is 90kg.
To find:
The mass of the metal.
Solution:
It is given that the metal is made from copper, zinc and lead in the ratio 13:6:1.
Let the mass of copper, zinc and lead are 13x, 6x and 1x respectively.
The mass of zinc is 90kg. So,
Now, total mass of the metal is:
Therefore, the mass of the metal is 300kg.