Question

help please ): Which of the following is not equivalent to the formula d = rt?

d over r= t

r = dt

d over t= r

d over r t= 1

Answer 1

\[d = rt\]If we divide both sides by r, we get\[\frac{d}{r} = t\]
If we instead divide both sides by t, we get \[\frac{d}{t} = r\]

Answer 2

so its d over t = r?

Answer 3

No, the formulas that I got were all equivalent.

Answer 4

If you do the same thing to both sides of an equation, it remains true.

Answer 5

One I didn't do:
\[d=rt\]Divide both sides by rt
\[\frac{d}{rt} = \frac{rt}{rt} = 1\]

Answer 6

You can also do these by looking at the dimensions. t is time. d is length. r is length/time. does r = dt make sense, given that? it would be length * time = length/time, which doesn't work.

Answer 7

\[\frac{d}{t}=r\]
it's like d=rt ;divide t
\[\frac{d}{r}=t\]
it's like d=rt ;divide r
\[\frac{d}{rt}=1\]
it's like d=rt ;divide tr

\[r=dt\]
it's like d=rt but how to get dt
multiply t both side
\[ dt=rt^{2}\]
it should to be dt=r not dt=rt^2
FAILLLLL !!!!

Answer 8

so how do you know which one is not equivalent?

Answer 9

The one that you couldn't get by valid manipulation. r = dt

Answer 10

My first post showed that A and C were legit. Then I showed that D was legit. That leaves B as the only possibility, and I showed why B wasn't a valid transformation of the original.

Answer 11

thank you (: