Distance=speed times time
if they take the same time, we cal the time , t
b=bike speed
w=walking speed
bikedistnace=17=bt
walkdistance=9=wt
b is 4 more than w
b=4+w
we have
17=bt
9=wt
b=4w
ok so
multiply first equation by 9 and 2nd by 17
153=9bt
153=17wt
set equal
9bt=17wt
divide both sides by t
9b=17w
sub b=4+w for b
9(4+w)=17w
distribute
36+9w=17w
minus 9w both sides
36=8w
divide both sides by 8
4.5=w
he walks 4.5kph
Answer:
100
Step-by-step explanation:
0.5 / 0.005 = 100
Answer:
its $0.05 or 5 cents
Step-by-step explanation:
Answer:
7.
Step-by-step explanation:
plug 27 in as y as y = 27.
3x - 1/9(27) = 18
3x + -3 = 18
add 3 on both sides
3x -3 + 3 = 18 + 3
3x = 21
x = 7
