+0  
 
+2
108
2
avatar+344 

https://vle.mathswatch.co.uk/images/questions/question16491.png

 

smileysmileysmiley

qualitystreet  Feb 13, 2018
 #1
avatar+545 
+2

d is directly proportional to the square of t 

d=k*t^2

80=k*4^2

80=k*16

k=80/16

k=5

d=5*t^2

8+4=12

d=5*12^2

d=5*144

d=720m

 

 

winkwinkwink 

lynx7  Feb 13, 2018
edited by lynx7  Feb 13, 2018
 #2
avatar+344 
+1

Thanks for helping.

 

smileysmileysmiley

qualitystreet  Feb 14, 2018

10 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.