Biologists tagged 75 fish in a lake on January 1. On February 1, they returned and collected a random sample of 30 fish, 10 of which had been
previously tagged. On the basis of this experiment, approximately how
many fish does the lake have?

-14 is the answer

hope this : ))

his chances of getting a coin of higher value is 4/19

step-by-step explanation:

i believe the answer is the polygon, heptagon.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,