16. insert parentheses where needed in each expression to show how to
get each result.
a. 2 + -3 x 4 = -10
b. 4 + -3 x -4 = -4
c. -12 + 2 + - 4 = 6
d. 8 = -2 + -2 = -6

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.

If cos(θ)=2853 with θin q iv, what is sin(θ)?

Jared had 3/7 of the minutes on a family phone plan remaining for the month. the plan is shared by 2 people. if divided equally what portion of the minutes remaining on the phone plan would be avalible for each person