About 22/40 of a lawn is planted with kentucky bluegrass. what percent of the lawn is planted with kentucky bluegrass

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?