Of the 25 fish in a tropical fish tank, 10 are guppies, 4 are swordtails, and the rest are tetras. One fish is to be randomly se
lected from the fish tank. What is the probability that the fish selected will not be a guppy?
1 answer:
There are 10 guppies, so we do 25-10
Which equals to 15
Answer is 3/5
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You can set up an system of equations
x=2y+8
x-y=25
Substitute x in to the second equation
2y+8-y=25
y+8=25
y=17
Substitute the y back in to the first equation.
x=2(17)+8=42
Answer:
1/2 <u>or</u> 0.5 <u>or</u> 50%
Step-by-step explanation:
3 + 3 = 6
3/6 = 1/2
Answer:
20
Step-by-step explanation:
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33.33
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