Yes ; "x = 36" , is, in fact, a solution.
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Given the equation: "x / 9 = 4" ;
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"x = 36" is a solution ; since "36 ÷ 9 = 4" ; and since x = (4)*(9) = 36.
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Answer: 1430
Step-by-step explanation: x + y + z = 2680
x = 2z - 100
y = 3z + 80
x + y = 5z - 20
6z - 20 = 2680
z = 450
y = 1430
Solution:
x = 800, y = 1430, z = 450
D 100% corect took my test $$$$$$$$$$$$$$
Step-by-step explanation:
The equation is given by :
63.25=800r+3.50
Here,
63.25 is the electric company charges
3.5 is an administrative fee
800 is charge per kilowatt hours
r is rate per kilowatt hour
In this proble, we need to tell that what does r represents. Hence, r shows kilowatt per hour.
We can solve it as follows :
63.25-3.5=800r+3.50-3.50 (Subtracting 3.50 to the both sides)
59.75=800r
Answer:
yes it is correct
Step-by-step explanation: