Question

suppose the velocity of an automobile starting from rest is given by v =200t / 2t+8 where v is the velocity in miles per hour and t is the time in seconds. find the number of seconds when the velocity is 50 miles per hour

Answer 1

reposting this because the answer is suppose to be 4 seconds can someone show or explain it

Answer 2

\[50= \frac{200t}{2t +8}\]

Answer 3

\[2t +8 = 4t\]

Answer 4

2t+8=4t

Answer 5

\[t = 4\]

Answer 6

t=4

Answer 7

tun-tun how about now ? did you get it

Answer 8

how is it 2t+8 = 4t? i dont get it?

Answer 9

divide by 50 on both sides

Answer 10

Divide by 50 and multiply by 2t + 8 both sides to the expression i wrote in my first reply

Answer 11

what about now?

Answer 12

if i divide both sides by 50 then it will remove the 50 in the left side but it will add /50 to the right side?

like

= 200t / 2t+8 / 50 ?

Answer 13

yes

Answer 14

so its 200t/(2t+8)(50)

Answer 15

which is 4t/2t+8

Answer 16

ohhh now i get coz im putting 50 under 2t+8

got it got it

Answer 17

hit the good answer :D

Answer 18

lol ok there u go