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3 years ago

What is the sum of interior angles for a nonagon

1 answer:

5 0

Remember your prefixes! They help a lot, because there is a formula for this particular problem. Nonagon refers to a shape with 9 sides.

The number of triangles a polygon has is represented by the formula:
(n-2)

Where "n" is the number of sides. If you ever forget what you subtract "n" by think of a triangle. It has 3 sides, so it is only logical that you should only have 1 triangle (subtract by 2). So, what is the sum of the interior angles of a triangle, 180°. So the formula looks like this:

Sum of Interior Angles = 180°(n-2)
180°(9-2)
180°(7) = 1260° is the sum of interior angles for a nonagon!

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In AHIJ, the measure of ZJ=90°, IJ = 5 feet, and JH = 3.2 feet. Find the measure of

Dominik [7]

Answer:

32.6

Step-by-step explanation:

opp/adj = 3.2/5

I= tan -1(3.2/5)

I =32.6192

=32.6

3 0

3 years ago

What is greater 6 km or 6100 cm

Slav-nsk [51]

The answer to this question is 6 km

4 0

2 years ago

Read 2 more answers

The distance around a circle is 37.7 meters long. what is the diameter of the circle?

aksik [14]

Ok so we know that the distance around the circle (or circumference) is equal to the diameter times pi.
This means that
$37.7 = \pi \times d$
d being the diameter,

This means that:
$d = \frac{37.7}{\pi}$
= 12.00028271
= 12 m

So the diameter of the circle is 12 metres.

Hope this helped

6 0

3 years ago

If a car with an average speed of 40 miles per hour drives for 45 minutes how far will it have gone

REY [17]

Answer: $30\ miles$

Step-by-step explanation:

The average speed of the car is 40 miles per hour:

$V=40\ \frac{mi}{h}$

The car drives for 45 minutes:

$t=45\ min$

Since 1 hours has 60 minutes, we can convert the time from minutes to hours:

$(45\ min)(\frac{1\ h}{60\ min})=0.75\ h$

Knowing these values, we can use the following formula for calculate the distace "d":

$d=V*t$

Therefore, substituting values into the formula, we get:

$d=(40\ \frac{mi}{h})(0.75\ h)\\\\d=30\ mi$

3 0

3 years ago

Round 905154 to the nearest ten thousand

beks73 [17]

905,154 rounded to the nearest ten thousand is 910,000. This is because the 5 in the thousands place is equal to 5, and when the number is 5 or more, you round up. That’s why when you round that number to the nearest ten thousand, it is 910,000.

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3 years ago