Solve the equation by graphing. if exact roots cannot be found, state the consecutive integers between which the roots are located.
x^2 +4x+2=0
one solution is between –3 and –1, while the other solution is between 0 and –4.
one solution is between 3 and 4, while the other solution is between 0 and 1.
one solution is between –3 and –4, while the other solution is between 0 and –1.
one solution is between –3 and 0, while the other solution is between –4 and –1.

Acircle has a circumference of 28.36 units what is the diameter of the circle

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.

How do you write a paragraph proof to prove that the corresponding angles shown are congruent