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3 years ago

Each of a regular polygon is 140°,find the number of the sides that ghe polygon has

Mathematics

2 answers:

Sloan [31]3 years ago

5 0

Answer:

the answer should be 360/36=10 sides

Step-by-step explanation:

A regular polygon is 144 deg the exterior angle is 36 deg.

Troyanec [42]3 years ago

4 0

Answer:

9 sides

Step-by-step explanation:

Internal angles of the regular polygon have a property, sum of interior angles is equal to:

sum = (n-2)*180°

n sides each interior angle equal to 140°, then

sum = 140°n

Comparing the two equations:

(n-2)*180= 140n
180n - 360 = 140n
40n = 360
n = 360/40
n = 9

The polygon has 9 sides

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Which best describes the error in finding the percent increase from 18 to 26?

mrs_skeptik [129]

Answer:

Step-by-step explanation:

The denominator should be the initial value of 18.

8 0

3 years ago

The sum of consecutive integers 1,2,3,...,n is given by the formula 1/2n(n+1). How many consecutive integers, starting with 1, m

LuckyWell [14K]

1/2 * n * (n+1) = 1081

distribute

1/2 n^2 +1/2n -1081=0

factor out 1/2

1/2 (n^2 +n -2162) =0

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(n^2 +n -2162) =0

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Answer 46

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3 years ago

Simplify 7x+42/x^2+13x+42

ehidna [41]

42x^2 + 20x + 42

Hope this helps

6 0

3 years ago

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30 points- Please help ASAP

3241004551 [841]

Hello from MrBillDoesMath!

Answer:

Direct variation

Discussion:

Looking at the table table not that multiplying the x value by 11 gives the y value. That is,

y = 11x

whicf is a direct variation.

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MrB

3 0

3 years ago

Read 2 more answers

Compute Δy and dy for the given values of x and dx = Δx. (Round your answers to three decimal places.) y = ex, x = 0, Δx = 0.4

kobusy [5.1K]

Answer:

0.492

Step-by-step explanation:

According to the given situation, the calculation of Δy and dy is shown below:-

$y = e^x, x = o, \Delta x = 0.6$

$dy = f'(x) = e^x$

$dy = e^x dx$

$= e^x (0.4)$

$dy = 0.4e^x$

$\Delta y = f(0.4) - f(0)$

$= e^{0.4} - e^0$

Now we use the scientific calculator or spreadsheet to determine the exponential value

= 1.491824698 - 1

= 0.491824698

= 0.492

Therefore for computing the Δy and dy we simply applied the above formula.

Hence, the answer is 0.4918

5 0

3 years ago

Each of a regular polygon is 140°,find the number of the sides that ghe polygon has​

Each of a regular polygon is 140°,find the number of the sides that ghe polygon has