Answer:
0.4.
Step-by-step explanation:
2 / 5 = 4 / 10 = 40 / 100 = 40% = 0.4
Hope this helps!
when .
The question states that is proportional to . In other words, there is a constant () such that for all .
The question also states that when . Make use of this equality to find the value of .
Since and , it must be true that . Substitute and into the equation and solve for :
.
Thus, for all .
Substitute in the value to find the corresponding value of :
x=2
9x+9=25+x
9x-x=25-9
8x=16