My dad has 8 oak and maple boards from the lumber yard. each oak board is 9 centimeters thick. each maple board is 6 centimeters thick. when my dad stacks the boards, the stack is 60 centimeters thick. how many of each type of board does he have

_oak boards
_maple boards

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?

Find the probability that -0.3203 < = z < = -0.0287 find the probability that -0.5156 < = z < = 1.4215 find the probability that 0.1269 < = z < = 0.6772

Apainting measures 2.4 feet from left to right. it's hung in the center of a rectangular wall measuring 20 feet from left to right. what is the distance between the right edge of the painting at the right edge of the wall?