Answer:
71.549
Step-by-step explanation:
Answer:
The value of y by itself in the equation x+2y=10 is
![y=\frac{10-x}{2}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B10-x%7D%7B2%7D)
Step-by-step explanation:
Given equation is x+2y=10 -------- (1)
To find y with given equation as below :
Equation (1) implies that x+2y=10
Subtracting the above equation by x we get
x+2y-x=10-x
x-x+2y=10-x
2y=10-x
Dividing by 2 on both sides we get
![\frac{2y}{2}=\frac{10-x}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B2y%7D%7B2%7D%3D%5Cfrac%7B10-x%7D%7B2%7D)
![y=\frac{10-x}{2}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B10-x%7D%7B2%7D)
Therefore the value of y is ![\frac{10-x}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B10-x%7D%7B2%7D)
Therefore the value of y by itself in the equation x+2y=10 is
![y=\frac{10-x}{2}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B10-x%7D%7B2%7D)
We are given the electricity cost as 5 cents per
kilowatt-hour. We should notice that the cost is actually in the form of:
electrical cost = cost / (power * time)
Therefore to get a number which is in terms of cents
alone (cost alone), therefore we should multiply the given electrical cost
value with the power and time.
Power = 80 watt = 0.08 kilowatt
Time = 24 hours
Therefore the cost is calculated as:
cost = electrical cost * power * time
cost = [5 cents / (kilowatt hour)] (0.08 kilowatt) (24
hour)
cost = 9.6 cents
Answer:
<span>9.6 cents</span>
Answer:
See explanation
Step-by-step explanation:
The question is incomplete. However, I'll ask and answer possible questions that emanate from the given parameter.
A possible question is: Write the given information as a function of distance.
We have that;
![Base\ Distance = 200](https://tex.z-dn.net/?f=Base%5C%20Distance%20%3D%20200)
![Time = t](https://tex.z-dn.net/?f=Time%20%3D%20t)
![Rate = r](https://tex.z-dn.net/?f=Rate%20%3D%20r)
The function would be calculated as:
Base Distance + Rate * Time
Substitute values for Base Distance, Rate and Time
This gives:
![200 + r * t](https://tex.z-dn.net/?f=200%20%2B%20r%20%2A%20t)
![200 + rt](https://tex.z-dn.net/?f=200%20%2B%20rt)
Hence;
![Distance = 200 + rt](https://tex.z-dn.net/?f=Distance%20%3D%20200%20%2B%20rt)
Another possible question is to determine the current distance travelled by the family at a rate of 80 miles per hour for 3 hours.
Here, we have:
![r = 80](https://tex.z-dn.net/?f=r%20%3D%2080)
![t = 3](https://tex.z-dn.net/?f=t%20%3D%203)
Substitute these values in ![Function = 200 + rt](https://tex.z-dn.net/?f=Function%20%3D%20200%20%2B%20rt)
![Distance = 200 + 80 * 3](https://tex.z-dn.net/?f=Distance%20%3D%20200%20%2B%2080%20%2A%203)
![Distance = 200 + 240](https://tex.z-dn.net/?f=Distance%20%3D%20200%20%2B%20240)
![Distance = 440](https://tex.z-dn.net/?f=Distance%20%3D%20440)