The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 0.8 pound. if a sample of 16 fish is taken, what would the standard error of the mean weight equal? select one:

Five dinosaurs go for a walk and come across some lovely chicken wings. their names are rexy, bronto, steggy, paly, and terry. there are exactly 5 dozen wings(equal enough for each dino to have a dozen right? ); however, terry is on a diet and he only eats 6 wings. if paly eats 2 more than terry, steggy eats 4 more than paly, and bronto and rexy eat the same amount because they are really hungry from not eating all day, how many chicken wings did each dino eat?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?