Answer:
There are four correct expressions.
Step-by-step explanation:
Four correct expressions:
Simplify:
Find the value of x to the nearest tenth
2 answers:
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speed = distance/time
The average speed will be the change in distance divided by the change in time.
(d(10) -d(5))/(10 -5) = (80 -20)/5 = 12 . . . . meters per second
The average speed will be the change in distance divided by the change in time.
(d(10) -d(5))/(10 -5) = (80 -20)/5 = 12 . . . . meters per second
Answer:
Let f_n be the number of rabbit pairs at the beginning of each month. We start with one pair, that is f_1 = 1. After one month the rabbits still do not produce a new pair, which means f_2 = 1. After two months a new born pair appears, that is f_3 = 2, and so on. Let now n 3 be any natural number. We have that f_n is equal to the previous amount of pairs f_n-1 plus the amount of new born pairs. The last amount is f_n-2, since any two month younger pair produced its first baby pair. Finally we have
f_1 = f_2 = 1,f_n = f_n-1 + f_n-2 for any natural n 3.