Which best explains why this triangle is or is not a right triangle?

A triangle has side lengths 60 inches, 144 inches, 156 inches.
This triangle is not a right triangle: 156 squared + 60 squared not-equals 144 squared.
This triangle is not a right triangle: 156 squared + 144 squared not-equals 60 squared.
This triangle is a right triangle: 60 squared + 156 squared = 144 squared.
This triangle is a right triangle: 60 squared + 144 squared = 156 squared.

An angle that measures between 90 and 180° is called a(,

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

Determine if the following statement is true or false. the normal curve is symmetric about its​ mean, mu. choose the best answer below. a. the statement is false. the normal curve is not symmetric about its​ mean, because the mean is the balancing point of the graph of the distribution. the median is the point where​ 50% of the area under the distribution is to the left and​ 50% to the right.​ therefore, the normal curve could only be symmetric about its​ median, not about its mean. b. the statement is true. the normal curve is a symmetric distribution with one​ peak, which means the​ mean, median, and mode are all equal.​ therefore, the normal curve is symmetric about the​ mean, mu. c. the statement is false. the mean is the balancing point for the graph of a​ distribution, and​ therefore, it is impossible for any distribution to be symmetric about the mean. d. the statement is true. the mean is the balancing point for the graph of a​ distribution, and​ therefore, all distributions are symmetric about the mean.