Question

Which equation is not equivalent to the formula e = mc?
m equals e over c
c equals e over m
e = cm
m equals c over e

Answer 1

@imqwerty

Answer 2

e=mc
divide both sides by c
\[\frac{ e }{ c }=\frac{ mc }{ c }=>\frac{ e }{ c }=m\]so clearly we can see that 4th one is wrong.

Answer 3

Hint:
let's start from m=c over e, then i multiply botth sides by e, so I can write this:
\[m \cdot e = \frac{c}{e} \cdot e\]

Answer 4

wait .. so d is the right answer?

Answer 5

correct!

Answer 6

ok ty both

Answer 7

:)