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2 years ago

8

Heyy I really need help. I don't understand any of this.

1 answer:

mart [117]2 years ago

4 0

Answer:

The parenthesis means to multiply the numbers. I don't understand any of these either but I hope this helps.

Step-by-step explanation:

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Step-by-step explanation:

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2 years ago

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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} \\

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

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2 years ago

Find the slope and the -intercept of the line.<br> y=-3/4x+8

Alona [7]

Answer:

$slope = - \frac{3}{4} \\ y - intercept = 8$

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2 years ago

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What is this answer?

QveST [7]

Answer:

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Step-by-step explanation:

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2 years ago

Find the slope of the line passing through the points (3,4) and (8, -3)

marshall27 [118]

Answer:

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Step-by-step explanation:

y2 - y1 ÷ x2 - x1

(3,4) (8, -3)

(x1,y1) (x2,y2)

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2 years ago