Answer:
Step-by-step explanation:
Discussion
If the radius goes through 1 rotation. The "angle" gone through is 360 degrees. So the method is to figure out circumference of the circle, multiply this by a fraction involving 120, and you are done.
Formula
Arc Length = (120/360) * 2 * pi * r Substitute values into this equation.
Givens
Central angle = 120
r = 9.5
Solution
Arc Length = (120/360) * 2 * 3.14 * 9.5
Arc Length = (0.333) * 2 * 3.14 * 9.5
Arc Length = 19.87 cm
These are the vertical anvles, so v=50°
Answer:
x = 15
The median is the middle number, however, in this case there are two:
25 and x
The formula is:
23 + x/2 = 30.5
Subtract 23 from both sides:
23 + x - 23 = 30.5 - 23
Simplify:
x/2 = 7.5
Multiply both sides by 2:
2x/2 = 7.5 ⋅ 2
Therefore:
x = 15
Boys are a 2:1 ratio to girls.
Hope you have a nice day
They get easier once you keep doing them, It took me a little while to learn.
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