Answer:
Step-by-step explanation:
One pair of coordinates is sufficient to work out the constant of proportionality.
<u>Equation in general form:</u>
and
<u>Substitute x- and y- coordinates into equation and find the value of k:</u>
Answer: 17.50 give brainliest if it helps
Step-by-step explanation:
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
Answer:
(9(x+3))-5
Step-by-step explanation:
