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yeetusbobeetus
02.10.2019 •
Mathematics
Jack took a survey of some classmates to find out their favorite type of fish in the school’s aquarium. of his classmates, 8 liked the neon fish, 4 chose guppies, 10 preferred goldfish, and 3 picked angelfish. using these results, if jack asks 1 more classmate about his or her favorite fish, what is the probability it will be a goldfish
the answer will be a percent
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Ответ:
Ответ:
Step-by-step explanation:
I learned this easy way to complete the sqare in the fastest way possible
First you want to get it to x^2. So the first thing you would do is divide the entire equation by 2 to get 2(x^2 -5/2x +3/2). then you do one half of b or in this case -5/2. That would make -5/4. you would put this into the factor.
2( x -5/4 + ) ( x -5/4 - )
Then you square that number (-5/4)
That makes 25/16. you take that number and subtract the last number or the constant, c to make 1/16. now to finish it up you square root that number. the squre root of 1/16 is 1/4. then you put that into the last part of the factor.
2( x -5/4 + 1/4) ( x -5/4 - 1/4)
Then you simplify
(x-1) 2(x-3/2)
(x-1) (2x-3)
now to make sure I am correct, I will re-multiply it out
2x^2 -5x + 3