WOULD ANYBODY PLEASE HELP ME OUT??? ABCD is a parallelogram. Determine the measure of ∠B. (all links will be deleted)
Question options:

A)

52°

B)

39°

C)

96°

D)

78°

If a baby uses 15 diapers in 2 days how many diapers will the baby use in a year

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?