9 is 22.5% of 40 if that's the question.
First you need to find the cicumfrence of the circle which is π × r (radius) or π × c (circumfrance) ÷ 2
Answer:
13x -12
Step-by-step explanation:
13 x - 4[ x + (3 - x )].
Combine like terms inside the brackets
13 x - 4[ 3 -0x]
13x - 4[3]
Multiply
13x -12
Answer
5-n
Step-by-step explanation: