Dina purchased a new dining room table for $764.50 and four new chairs for $65.30 each. What was the cost of the whole set? A. $829.80
B. $895.10
C. $1,025.70
D. $1,091.00

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

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.

What is the measure of angle x? answer