A nonagon has 9 sides

The formula for the sum of all the interior angles of a polygon is 180(n-2) where n is the # of sides. Then the answer is:

180*(9-2)
180 * 7
1260 is the answer

3 0

3 years ago

Seth invested n dollars into an investment fund last year. After a period of one year, the value of his investment can be repres

Andre45 [30]

Answer:

A. The value of his investment decreased by 16% during this time period.

Step-by-step explanation:

To answer this problem, suppose an amount n.

After a year in value of the investment is:

$0.84n$

Now we calculate the rate of change of n with the following formula:

$V = \frac{Final\ Amount - Initial\ Amount}{Initial\ Amount}$

$V = \frac{0.84n-n}{n}*100\%\\\\V = \frac{n(0.84-1)}{n}*100\%\\\\V = (0.84-1)*100\%\\\\V = -0.16 * 100\%\\\\V = -16\%$

The value of the investment decreased by 16% with respect to the initial amount.

The correct answer is the option

A. The value of his investment decreased by 16% during this time period.

7 0

4 years ago