Answer:
2:30
Step-by-step explanation:
58+32=90
90-60=30
2:30 is the answer
Answer:
110
Step-by-step explanation:
There is a theorem that says "The measure of an angle formed by a secant and a tangent drawn from a point outside the circle is HALF the difference of the intercepted arcs "
Hence we can say:

We can say:

Also, we know that circle's degree measure is 360, thus we can say:

To find Arc AB, we can use the two equations and add, thus we get:

Thus, arc AB = 360 - 250 = 110
2nd answer choice is right.
Answer:
Option A - 4.91
Step-by-step explanation:
The formula for theoretical standard deviation of uniform distribution is;
σ = √{(b-a)^2}/12
Now from the question, b = 38 minutes and a= 21 minutes
Therefore, σ = √{(38-21)^2}/12
= √{17^2}/12 = √289/12 = 4.907 which is approximately 4.91