Is abcd a parallelogram? explain how you know.

is efgh a parallelogram? explain how you know.

Which of the following is true for the relation f(x)=2x^2+1

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Write the fraction or mixed number and the decimal shown by the model