Marie is creating a cross stitch pattern with rectangles all the same size. what is the perimeter of each rectangle with sides of lengths 3/4 inch and 2/3 inch

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

What is a graph with a never ending line called?

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?