Assume the random variable x is normally distributed with mean μ=84 and standard deviation σ=5. Find the indicated probability. ​P(68

What is the greatest number of parts of a circle that can be formed by cutting the circle with 7 straight cuts? (note: the parts do not have to be equal in size)

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?

Write the equation of the circle centered at (10,-2) with radius 2.