Select the correct answer. The formula for the area of a trapezoid is A = 1/2(b1+b2)h. Which formula could be used to determine b1 when the other variables are known?
A b1 = 2/Ah +b2
B b1= Ah/2 - b2
C b1= 2A/h +b2
D b1= 2A/h - b2

Apath 3 m wide runs around the inside of a square park inside 60 m.find the area of the path.pls

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

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?