Its a simultaneous equation:
lets make "x" the used games and "y" the new ones
4x + 2y = 84
6x + y = 78. (multiply this by 2 to cancel out y)
12x + 2y = 156
so now we subtract them:
12x - 4x = 156 - 84
x = 9
used games cost $9
new games cost 78 - 6(9) = $24
Janet has $120 but she already bought 3 NEW games so:
120 - 3(24) = $48 left
48/9 = how many used ones she can buy = 5. something
she can buy 5 used
Based on the information given, the equation to represent the situation will be x + 820.
Let last months car production be represented by x.
From the information given, we are told that a car corporation produced 820 more cars this month than it did last month.
Therefore, the equation to represent this month's car production will be:
= x + 820
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Answer:
5
Step-by-step explanation:
4*10x=40x
4*2=8
40x-8=192
40x=192+8
=200
X= 200/40
=5
Rewrite it as y=6x-7/5
Flip the x and y
x=6y-7/5
Solve
5x=6y-7
5x+7=6y
5/6x+7/6=y
f^-1(x)=5/6x+7/6
Answer:
Step-by-step explanation: i don't get what you are trying to ask
