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3 years ago

Find an explicit rule for the nth term of the sequence.

Mathematics

1 answer:

Paladinen [302]3 years ago

4 0

Find the difference between the existing terms:

-8 / -4 = 2

-16/-8 = 2

This means the next term is the previous term multiplied by 2:

The first term is given as -4

You would start with the first term ( -4) then multiply it by the difference of terms ( 2) raised to the nth term (n) minus 1.

An = -4 * 2^n-1

The answer is A

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boyakko [2]

Answer:

x = ± √(-15n-7) / √2n (± (-15n-7)^(1/2) / (2n)^(1/2))

Step-by-step explanation:

Factoring?

2nx² + 15n+7 = 0

2nx² + 0*x + (15n+7) = 0 ... ax²+bx+c=0

Roots: x = (-2b ± √b²-4ac)) / 2a = (0 ± √0-4*2n*(15n+7)) / 4n

x = ± (√8n (-15n-7)) / 4n = ± (2√2n(-15n-7)) / 4n = ± (√2n(-15n-7)) / 2n

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3 years ago

Evaluate-9-(-6)=3. Need help on question

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Step-by-step explanation:

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By the behavior of end points : left side of graph would be up .

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