Which statements are true regarding the symmetries of
this shape? Check all that apply.
The order of rotational symmetry is 3.
Symmetry occurs after a rotation of 240°.
The smallest angle of rotational symmetry is 180º.
The figure has 3 lines of reflectional symmetry.
Symmetry occurs after a rotation of 60°.

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.

Maurice has 54 fewer comic books than rebecca. they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection

Convert the mixed numbers into improper fractions. convert the improper fraction to mixed numbers.