The intersection of the graphs of two linear equations an be located n a cartesian grid by starting at the origin, moving 7 units down. Which of these is a solution to the system of equations? A. x y = - 5 B. x =x- 7: y = 5 C. x = - 5: y =- 7 D. x = 5: y = 7

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.

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3