Find the z-score such that: (a) the area under the standard normal curve to its left is 0.5

This question out to be one that we could all answer almost instantly.  If the area under the std. norm. curve to the left of z is 0.5 (exactly half of that area), the z value is zero (0).

Add a picture

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3