I think you meant to have more of a problem stated.
Basically, you use the Law of Sines when you have 2 angles but the length of only one side.
The formula for this law is
a / sine(A) = b / sine(B) = c / sine(C)
The value of y would be 60
The way you would solve this is by plugging in 7 for x.
After you plug in the 7 for x you would have to multiply 7 by 4 to get 28.
Next you would add 28 to 32 to get 60.
Your final answer should be y=60
Probability of taking both is the probability of each, multiplied.
.43 x B.E. prob = .062
divide each side by .43
B.E. prob = .144
The arc length can be determined with this formula. arc length = central angle/360° × perimeter of circle.
First, find the perimeter of the circle. p = 2 × π × r. p = 2 × 3.14 × 8. p = 50.24 m.
Second, find the arc length. arc length = central angle/360° × perimeter of circle. arc length = 45°/360° × 50.24.
That is just an explanation of how to do it which that may get you to your answer.