A survey of 400 men ages 30-35 found a mean height of 70 inches with a standard deviation of 5 inches. Find the margin of error for the mean if you are looking for a 95% confidence level.

Add the cents that add the left overs to get the first number

D. triangular pyramid

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.