The slope formula can be used to prove a triangle has a right angle
X is a normal random variable with a mean<span> of 120 and a </span>standard deviation<span> of 20. </span>Determine<span> the </span>probability<span> that X is greater than 135. Problem 3.</span>Find<span> a value of c so that P( -c < Z < c) = .45.</span>
I do not see the answer to the question
