In ecology a measure of diversity of a species in a certain population is called the diversity index. The diversity index D is defined as the probability that any two organisms selected at random from the population will be from different species

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

you would need to also lose 1 point for each of the other outcomes for it to be fair.

step-by-step explanation:

its line 2 i just added the rest or else it wouldn't let me answer

3 3 6, because in every triangle the longer side is always shorter than the sum of the other two