The hypotenuse of a right-angled triangle is (2y-1) cm long. The other two sides are x cm and (y+5) cm in length. If the perimeter of the triangle is 30cm, find the possible values of x and y.

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

The graph shows the distance kerri drives on a trip. what is kerri's speed?

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?