51.3 I think you just have to subtract 68.5 to 17.2
Answer:
c
Step-by-step explanation:
Answer:
x=101/65, y=-16/65. (101/65, -16/65).
Step-by-step explanation:
4x+9y=4
9x+4y=13
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9(4x+9y)=9(4)
-4(9x+4y)=-4(13)
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36x+81y=36
-36x-16y=-52
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65y=-16
y=-16/65
4x+9(-16/65)=4
4x-144/65=4
4x=4+144/65
4x=404/65
x=(404/65)/4=101/65
x=101/65, y=-16/65.
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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