Cho hàm số y f x  ( )
có đồ thị như hình vẽ bên. Số nghiệm của phương trình
2 1 0 f x   
là

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?

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Why is studying fractions important