The perimeter of a triangle is 38 inches. Two sides of the triangle measure 12 inches and 10 inches. What is the length of the third side of the triangle?

Iam so stuck. what is the worked out answer for this question?

Plzzzz i beg u asap ! what is the equation of this graphed line? enter your answer in slope-intercept form in the box.

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?