The length of a certain fish species is normally distributed with a mean of 15 cm and a standard deviation of 2, find the length of a fish with a z-score of 1.9.

answer:

125 yards

explanation:

75+50=125. that is my answer

i believe the answer is 323 ft

step-by-step explanation:

k

step-by-step explanation:

domit

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0