Enter the value of z that makes the given equation true.

What is the greatest common factor of 6a, 8a^{2}, and 14?

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Suppose a pendulum is l meters long. the time, t,in seconds that it tales to swing back and forth once is given by t=2.01