Question

t varies inversely with d and t = 0.15 when d = 120 {a} find t when d = 45 {b} find d when t = 0.12

Answer 1

\[t \ \ \alpha \ \ \frac{ 1 }{ d }\]

Answer 2

which means..
\[t = \frac{ k }{ d }\]

Answer 3

where k is a constant .. so u can write
td = k
which means that always the multiplication of t by d is a constant

Answer 4

since u know the value of t when d = 120
t= 0.15 and d = 120
u can use
td = k
and find the values of k

Answer 5

can u plug the values and find "k" ?

Answer 6

if u multiply
0.15 by 120 u will get 18..
so.. every time u multiply d by t the answer is 18 .. u can use this to find the answers for ur question

Answer 7

since the value u will get when u multiply any value for t or d by the corresponding value ..
is 18
\[45t = 18\]
and
\[0.12 d = 18\]

now solve these and u will get ur answer ...

hope this will help you :)

Answer 8

thanks

Answer 9

u r welcome :)