F(X)=13 Just Plug 10 into the X in the equation
Answer:
Step-by-step explanation:
![A_{circle}=\pi r^2\\\\A=\pi r_{walkway}^2-\pi r_{fountain}^2\\\\A=\pi(20^2-16^2)=244\pi](https://tex.z-dn.net/?f=A_%7Bcircle%7D%3D%5Cpi%20r%5E2%5C%5C%5C%5CA%3D%5Cpi%20r_%7Bwalkway%7D%5E2-%5Cpi%20r_%7Bfountain%7D%5E2%5C%5C%5C%5CA%3D%5Cpi%2820%5E2-16%5E2%29%3D244%5Cpi)
use a calculator fo find the value
Answer:
total question =90
she obtained 75% of first 40 questions
- No. of question she got correct in first 40 = 75% * 40 = 30
2. in order to get 80% out of 90,
the no. of questions got correct by Ama = 80% * 90 = 72
3. As she already got 30 c0rrect in first 40 questions, the number of question she needs correct for remaining 50 = (72-30) = 42
percentage = 42/50*100% = 84%
Answer:6
Step-by-step explanation:
You will divide 120/20