Answer:
A
Step-by-step explanation:
It would be B if it was asking the ratio of non-mammals to mammals.
1/2 + 1/4 + 1/4 + 2/3 = 5/3
mean = 5/3 ÷ 4 = 5/12
Answer:
f(1/3) = 9
Step-by-step explanation:
f(x) = 1/x + 2/x
f(1/3) = 1/(1/3) + 2/(1/3)
f(1/3) = 1(3) + 2(3)
f(1/3) = 3 + 6
f(1/3) = 9
You have to multiply each pair of sides and then add all the numbers together which would give you your answer
Answer: k = 3
-2k - 4k = -18
-2k - 4k = -18
-6k = -18
k = -18/-6
k = 3
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