Answer:
30 fish
Step-by-step explanation:
Each fish needs 1/3 liter of water.
This means that there can be 3 fish in 1 liter of water. There are 10 liters in all. Multiply 3 with 10
3 x 10 = 30
30 fish is your answer.
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(B)
Step-by-step explanation:
Rewrite the equations into their standard forms. The first one can be rewritten as

and the 2nd can be rewritten as

Solving this system either by substitution or elimination, we get

If you add x + y, you'll get a negative number.
24 pie and now they want me to explain but I don’t want to
You can use elimination
7x - 3y = 4
-10x + 3y = 2
Add both equations
-3x = 6, x = -2
Plug in -2 for x in one equation
7(-2) - 3y = 4
-14 - 3y = 4
-3y = 18, y = -6
Solution: x = -2, y = -6