trying to help my son, help on this: The distance a car travels is equal to the average speed times how long the car has traveled. Which equation should be used to find the speed ® of a car that averages traveling 100 miles in 1 ½ hours?

Question

anonymous · Answer

distance = speed / time
speed = distance x time
speed = 100 miles x 1.5 hours
speed = 100 x ( 1.5 x 60 ) mins
speed = 100 x (1.5 x 60 x 60 ) seconds
= 540000

:)

anonymous · Answer

ok so the expression would be r=(100)(1 1/2)

anonymous · Answer

yes :)

anonymous · Answer

oh, i thought it wud be r=100/1 1/2

anonymous · Answer

no because the Distance equation is Speed / time .. and they want to know what is the speed so, speed is Distance times time..

hmm i think this is correct

anonymous · Answer

ok ok i see now, never been good at word problems i always have misread them

anonymous · Answer

can u help with another?

anonymous · Answer

hhh same here .. but please check it if its correct or not .. cuz am not that much sure ..

and yeah sure .. wts the problem ?

anonymous · Answer

ok,  i think ur right cause in begining it says car travels is equal to the average speed time how long the car has traveled so i guess u wud be right

anonymous · Answer

here is the secong one: A table cloth must exceed the area of the table that is to be covered by 25% Andrea needs to cover a rectangular table with length 3 feet and width 4 feet. Andreas tablecloth has a length of 3 feet 4 inches. Which inequality can be used to determine the possible width, w of the tablecloth? a. ¼(3*4)<3 1/3w b. ¼(3*4)>31/3w c. 5/4(3*4)<3 1/3w d. 5/4(3*4)>3 1/3w