So first create and define your variables:
Z = amount of zebra fish
N = amount of neon tetras
Now create your equations:
2z+2.15n=31.20
z+n=15
This is your system. There are multiple methods to use but in this problem I’ll use the substitution method by simplifying the bottom equation.
2z+2.15n=31.20
z=15-n
Now I’ll plug the bottom equation into the top one.
2(15-n)+2.15n=31.20
And just solve from here.
30-2n+2.15n=31.20
0.15n=1.20
n=8
So he bout 8 neon tetras, and 15-8= 7, so he bought 7 zebra fish
Variable squared minus negative 2
Answer:
The two lines meet at (-1,1)
Answer:
8
Step-by-step explanation:
If 8x = 4, then you can solve for x by dividing both sides by 8. Therefore, x = 4/8 or 1/2.
Then to solve 2 + 12x you simply plug in 1/2 for x.
2 + 12x
2 + 12(1/2)
2 + 6
8
Answer:
$328.12
Step-by-step explanation:
8.75X37.5