What is the image of (4,−7) after a dilation by a scale factor of 2 centered at the origin?

If eh = hg and hg=16, find the diameter of k

41/17 as a decimal rounded to the nearest hundredth

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?