Step-by-step explanation:
45% of number = 180
=> 100% of number = 180 * (100/45) = 400.
Hence the number is 400.
Answer:
hi the right answer is option C.112
here's why:

Answer:
15
Step-by-step explanation:
var a = 3
then a= 3
var b = 5
then b = 5
a ( a new variable ) = a * b = 3 * 5
Answer:
.
Step-by-step explanation:
Using first order linear differential equation:


finding integrating factor:
I.F = 
I.F =
now,



hence the solution is
