order of operation
1) --[-3÷3])+20
2) -27+(-12)(10)+4•[-3-16]
3) (-)-13(-26÷[-13])
4) -10+(-2)(13)-7(-2-1)
it would mean the world

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?