The ages of people entering a pie eating contest are normally distributed with a mean of 35 years and a standard deviation of 8.2 years. What is the age of a pie eating contestant with a z-score of −2.1 ?

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.