Answer:
The answer is 6 pounds.
Step-by-step explanation:
I figured it out by getting it wrong
Answer:
Step-by-step explanation:
y/4 - 4 = 3
Add four to both sides | y/4=7
We know that 7*4=28 so therefore y must be 28 | 28/4=7
7=7
Therefore y=7
True
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This is a simultaneous question.
To solve this, we have to make up 2 equations based on the info provided like so:
electricity = e
gas = g
600e + 100g = $412 ——(1)
400e + 150g = $293 ——(2)
In this case, it’ll be easier to use the elimination method where you eliminate a variable so you can calculate only one.
Here, we will be eliminating e so we can get the cost of gas.
To do this we need to get both equation’s e to 600, so we have to multiply equation 2 by 1.5:
(2) x 1.5:
400e + 150g = $293
600e + 225g = $439.50 ——(3)
Now we eliminate e by subtracting equation 1 from equation 3:
(3) - (1):
600e + 225g - 600e - 100g = $439.50 -$412
125g = $27.50
g = $0.22.
Therefore one unit of gas costs $0.22.
Hope it helps and have a good day ahead :D
Answer:
k = -10
Step-by-step explanation:
