HELP ASAP 25 POINTS Which of the following possibilities will form a triangle?

Side = 15 cm, side = 7 cm, side = 7 cm

Side = 15 cm, side = 7 cm, side = 9 cm

Side = 14 cm, side = 6 cm, side = 7 cm

Side = 14 cm, side = 6 cm, side = 8 cm

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3