I don’t know the answer for this

What is the value of x? enter your answer in the box. photo attached.

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20

Given a normal distribution with µ =50 and σ =4, what is the probability that 5% of the values are less than what x values? between what two x values (symmetrically distributed around the mean) are 95 % of the values? instructions: show all your work as to how you have reached your answer. don’t simply state the results. show graphs where necessary.