Answer:
Explanation:
this has a bunch of "implied" things that you're supposed to know. one is that all the way around a circle is 360° two is that if you know the angle on the interior.. that is also the arc length.. so knowing those things we can say
360 = 54 + 2x + 21 + 5x + 6 + 90
put like terms together
360 = 171 + 7x
189 = 7x
27 = x
x = 27
A circle adds up to 360 degrees. So we make this equation:
2x+21 + 5x+6 + 54 + 90 = 360
Combine like terms:
7x + 171 = 360
Subtract both sides by 171
7x = 189
Divide both sides by 7
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