5 The backyard at Selena's new house is in the shape of a square and has an area of 250 square feet. What is the approximate side length of her yard? (Between which two whole numbers?

A) 15 and 16
C) 16 and 17
B) 17 and 18
D) 18 and 19

What other information do you need to prove triangle dac=bca by asa

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.

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)