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3 years ago

NEED HELP ASAP!!!!!!!!!!!!!!!!

1 answer:

4 0

An=a1+d(n-1)
a1=first term
an=nth term
d=common differnce or how much it increases by each time
n=which one

so
originally 3 trees
a1=3

and after 19 years, 84 trees, so a19=84

a19=84=3+d(19-1)
84=3+d(18)
minus 3 both sides
81=18d
divide both sides by 18
4.5=d

an=3+4.5(n-1) or
an=4.5n-1.5
or
t(n)=3+4.5(n-1) or
t(n)=4.5n-1.5

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Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

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Lelechka [254]

Answer:

The intersection of N and M contains only those elements that are in both N and M.

The intersection of N and M is ϕ.

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Step-by-step explanation:

Given

M = { 1, 2, 3, 5, 8, 13}

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Now let us see each statement one by one.

The intersection of N and M contains only those elements that are in both N and M.

The statement is true because by definition intersection of two sets consists of common elements of both sets.

The intersection of N and M is ϕ.

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The intersection of N and M is {−9,−8,−6,−4,−2}.

The statement is false because there is not common element in M and N.

N∪M=∅

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N∩M=∅

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