I am assuming you are trying to find the sum.

First, plug in n for 1, then n for 80 to get the following numbers:
5/6 and 163/6
As you go up the sequence, as n is increased by 1, then the next number is increased by 1/3

Use the arithmetic sequence formula to solve for the sum.
n * (a1 + a2)/2 where a1 is 1st number and a2 is last number.
80 * (5/6 + 163/6)/2
Simplify the expression to get 1120.

7 0

4 years ago

When the polynomial is written in standard form, what are the values of the leading coefficient and the constant 5x + 2 - 3x^2

Arte-miy333 [17]

$\bf 5x+2-3x^2\implies \stackrel{\boxed{\textit{standard form}}}{\underset{~\hfill \textit{constant}}{\stackrel{\textit{leading coefficient}}{\stackrel{\downarrow }{-3}x+5x+\underset{\uparrow }{2}}}}$

3 0

3 years ago

Determine the median value.<br><br> 4.5, 7.5, 9, 9, 9.2, 9.3, 10, 10, 10.5, 13

Brrunno [24]

9.25, right? Because there's 10 numbers, the two middle numbers are 9.3/9.2. so when you add them up you get 18.5, then you divide it by 2 because there were only 2 numbers added, and I got 9.25

3 0

3 years ago

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