If y varies directly as x and y is 12 when x is 1.2 what is the constant of variation for this relation

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?