Amanda composed two songs. the longer song is 126 seconds less than twice the length of the short song. the longer song lasts 286 seconds. how long is the shorter song?

What is the number 321,000,000 in scientific notation? also what is the number? ?

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?

If two lines form congruent alternate interior angles with a transversal, then the lines