Abel is making brownies for a bake sale. the recipe shows the amount of each ingredient needed to make 9 brownies. complete each statement to adjust the ingredients for each new situation if abel uses this recipe

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.

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.