Step-by-step explanation:
4.5 × 10
= 45
this is the answer
Answer:
Step-by-step explanation:
D
Multiply both sides of the first equation by
:
This is quadratic in
; to make this clear, substitute
. Then
One of these solutions for
is negative. But, if
is real, then
is always supposed to be positive, so we can throw out the negative root, leaving
.
We actually don't have to solve for
exactly. We can just rewrite the next two equations in terms of
.
Since
, we get