Answer:
they need to plug in 2 for y instead or just subtracting it?
Answer:
s =
m
Step-by-step explanation:
Given s varies directly with m then the equation relating them is
s = km ← k is the constant of variation
To find k use the condition s = 9 when m = 30 , thus
9 = 30k ( divide both sides by 30 )
k =
=
s =
m ← equation of variation
Answer:
The correct answer is option A.
Step-by-step explanation:
Hi! I don't know why I am not getting any brainliest answer. So if you are kind enough could you please mark me as the brainliest answer and please follow me also.
Answer:
Step-by-step explanation:
This is a d = rt problem; but since it is linear, then proportions will work too. Set up the proportion with miles on top and hours on the bottom:

Then put the numbers in where they go, keeping in mind that miles goes with miles and hours goes with hours in the ratios, and that our unknown is time (hours):
and cross multiply to solve:
638x = 4466 so
x = 7 hrs