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3 years ago

What is the area help !

Mathematics

1 answer:

Morgarella [4.7K]3 years ago

3 0

300cm^2 have a good day

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svet-max [94.6K]

Answer:

The polygon has 9 sides

Step-by-step explanation:

we know that

A regular polygon has equal length sides and equal interior angles

step 1

Find the measure of the interior angle

Remember that

The interior angle plus the exterior angle must be equal to 180 degrees (form a linear pair)

Let

x ----> the measure of each interior angle in the regular polygon

$x+40^o=180^o$

solve for x

$x=180^o-40^o=140^o$

step 2

Find the number of sides of the regular polygon

we know that

The measure of each interior angle in a regular polygon is given by the formula

$x=\frac{(n-2)180^o}{n}$

where

n is the number of sides of the polygon

substitute the given values

$140^o=\frac{(n-2)180^o}{n}$

solve for n

$140n=180n-360\\180n-140n=360\\40n=360\\n=9\ sides$

therefore

The polygon has 9 sides

8 0

3 years ago

The rainfall total this year was 10.2 inches, which is 20%less the last year’s rainfall total. What was last year’s rainfall tot

marissa [1.9K]

8.16 in
20% of 10.2 is 2.04
10.0-2.04 is 8.16 in

4 0

3 years ago

Bacterium that grows each hour exponentially and determine how much it grows<br> per hour.

iVinArrow [24]

2^x is the function of the exponential growth.

Hence , 2^1, 2^2/hour = 4, 2^3 = 6/hr... 2^n=2^n at an amassing rate.

Bacteria is one great example to present the exponential growth. <span>Bacteria are single celled microorganisms. They have a simple cell structure than other organisms because they have no nucleus and no cell membrane. Their control center containing the genetic information si contained in a single loop of DNA. </span>

4 0

3 years ago

I need help again...

Vsevolod [243]

1. 80cm
2. 48cm
3. 6 cm

8 0

2 years ago

Which problem could be solved using the inequality 5n<55

____ [38]

Answer:

B) is the correct answer because the 5 shirts are supposed to be LESS THAN 55, hence the less than symbol.

3 0

2 years ago