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just olya [345]
1 year ago
6

Find the measure of one interior angle of a regular 21-gon.

Mathematics
2 answers:
ExtremeBDS [4]1 year ago
5 0
C step-by-step the coordinate of that is pretty simple to say but hard at the same time
lesya [120]1 year ago
4 0
Measure of sum of interior angles formula (where “n” is number of sides): (n-2)180

(21-2)180
=3420

3420 is the measure of the sum of a regular 21-gon, and to find the measure of only one angle, we need to divide the sum by the number of sides, so
3420/21

= 162.9

the answer is B
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Answer:23

Step-by-step explanation:

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3 years ago
Can someone please help me with this solving exponential equation e^4x-9=56
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Please help me with this problem!
pantera1 [17]
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5 0
3 years ago
Kind people!help me please...And a detailed solution/THANKS<br> sin^2x-0,5sin2x=0
Volgvan

This will be easier to write, and a lot easier to read, if we temporarily
use another symbol ... say, 'Q' ... to represent  ' sin(2x) ' .
Here we go:

Original equation:                Q² - 0.5 Q  =  0

Factor the left side:            Q (Q - 0.5)  =  0

This equation is true if either factor is zero:


--  If  Q=0, then  sin(2x) = 0

                                 2x = 0°,  180°,  360°

                                   x = 0°,  90°,  180°


-- If  (Q-0.5) = 0, then      Q  =  0.5

                                sin(2x)  =  0.5          

                                       2x  =  30°,  150°

                                         x  =  15°,  75°


The whole collection of solutions
between  0°  and  360° :

          x = 0°,  15°,  75°,  90°,  180° .

8 0
3 years ago
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