Answer:
b.) x= 6, m∠XOY= 18
Step-by-step explanation:
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Answer:
1/162
Step-by-step explanation:
spinning a 9 = 1/9 probability
flipping a tails= 1/2 probability
spinning a 4= 1/9 probability
(1/9)(1/2)(1/9)= 1/162
You have a probability of 1/162 of spinning a 9, flipping a tails, and then spinning a 4.
Answer:
-6, -4, -3, and -1 only
Step-by-step explanation:
hope this helps!
Answer: Well if you were going to think of a circle you can divide it into 4 equal sizes in one of the is equal to two pentagons and a half. If you add all is equal to a loop full of pentagons [which makes 10 pentagons]. Because the ring is made out of regular pentagons, we can work out that each of the interior angles of each pentagon is 108* degrees. By extending the lines that two pentagons share, assuming they will all meet in the middle, it will create a triangle. As we know each angle of a [regular] pentagon is 108* degrees, we know the two base angles of the triangle would equal to 72** which leaves the top angle to be 36 degrees. As [the sum of] angles at a point is 360 degrees, and 36 is divisible by 360, it will make a complete ring. Also, as 360 ÷ 36 = 10, we know that the ring will be made out of 10 pentagons. as formula to calculate the the size of a interior angle of a polygon is (n×180−360)÷n (for n being the number of sides that the polygon has). because the triangle is made by extending the lines, and angles on a line is 180 degrees, 180−108 (an interior angle of a pentagon) =72.
