Directions: Tell whether the following are characteristics of stocks or bonds. Write stock or

Mathematics

1 answer:

Goshia [24]3 years ago

4 0

Answer:

I need help with my question. can someone help me

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Write a linear function f with f(-3) = 1 and f(13) = 5

GalinKa [24]

D = (5-1)/(13-(-3)) = 0.25

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3 years ago

A) show that $n(2n + 1)(7n + 1)$ is divisible by 6 for all integers $n$.

goldenfox [79]

Hi,

A)
$\dfrac{n(2n+1)(7n+1)}{6} \\

= \dfrac{14n^3+9n^2+n}{6} \\

= \dfrac{12n^3+6n^2}{6} + \dfrac{2n^3+3n^2+n}{6} \\

=2n^3+n^2+ \dfrac{n(2n^2+3n+1)}{6} \\

= 2n^3+n^2+ \dfrac{n(n+1)(2n+1)}{6} \\

= 2n^3+n^2+ 1^2+2^2+3^2+...+n^2\ is\ an\ integer.
$

B)
Only if n=4*k or n=4*k+1 , k beeing an integer.

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