The sides of a triangle are in a ratio of 5:7:9. If the perimeter of the triangle is 147 inches. What is the length of the smallest side of the triangle.

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?