Answer: DNE
Step-by-step explanation:
Answer:
8x-y=19 is already in your Ax+By=C form
For your second one you need to switch your x and y around so
3x+y=7 gives you your Ax+By=C form
Now you want to use the system of elimination to solve the system of equations
So when you take 8x-y=19 you then add 3x+y=7
8x+3x= 11x
-y+y=0 (crosses out... why it's called elimination)
19+7=26
Your equation is now 11x=26
You then divide both sides by 11 to get
x=26/11
(Hope this helps ya ;)
Answer:
443$
Step-by-step explanation:
to get this you subtract 500 from 57 which is 443
Answer:
270 dollars
Step-by-step explanation:
He's going to watch 90 hours of tv in 30 days, so multiply 90 hours x 250 watts, Which is 22500 watts over 30 days, then convert to kilowatts which would be 22.5 kilowatts total. He used .25 kilowatts an hour every day. Then multiple 22.5 x 12 cents to get your answer 270. He paid 270 dollars for electricity for the tv.
Answer:
The value of g(a) is:
Step-by-step explanation:
Given
As the function g(x) is given by
To determine
g(a) = ?
In order to determine g(a),
substitute x = a in the function g(x) = 3 - 2x
g(x) = 3 - 2x
g(a) = 3 - 2(a)
g(a) = 3 - 2a
Therefore, the value of g(a) is:
