8/20 = (x5) 40/100
40/100 = 40%
answer = 40%
You don't find the ratio of one number.
You find the ratio of two numbers.
Their ratio is their quotient ... one number divided by the other one.
Answer:
x = -1/3
Step-by-step explanation:
We have,
sin(x + 7) = cos(4x + 8)
We need to find the value of x.
We know that,
sin(90-x) = cosx
So,
sin(90-(x + 7)) = cos(4x + 8)
cos(x+7) = cos(4x + 8)
i.e.
(X+7) = (4x+8)
7-8 = 4x-x
-1 = 3x
x = -1/3
