I believe that it is 5 1/2
4(x - 3) - r + 2x = 5(3x - 7) - 9x
4x - 12 - r + 2x = 15x - 35 - 9x
6x - 12 - r = 6x - 35
6x - 6x - 12 + 35 = r
23 = r <==
with ur answer : -r = -23....u would multiply both sides by -1 to make r positive....resulting in : r = 23....so u basically got the same thing I did...just didn't quite finish
Decay Rate = ln (2) / Half-Life
Decay Rate = .693147 / 6
Decay Rate =
<span>
<span>
<span>
0.1155245
</span>
</span>
</span>
days
Answer:

Step-by-step explanation:
Given : Expression
To find : Simplify the expression ?
Solution :
Using BODMAS,




Therefore, 