In the diagram below, ab is parallel to cd. what is the value of y?
а. 50
b. 30
c. 150
d. 60

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

In what organelle does photosynthesis take place?

How does reflecting or rotating a figure change the interior angles of the figure?