Angle b measures 60°. what is the measure of angle that is complementary to angle b?

Answer this question! 30 points and brainliest! only if you know the answer.

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

Mike wants to make meatloaf. his recipe uses a total of 8 pounds of meat. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use? enter your answer as a mixed number in simplest terms.