Answer:
7 students play an instrument.
Calculation:
35=100%
20%=[20×35]÷100
=7
3^2+3^2=c^2
18=c^2
c=3sqrt2
Or 4.24 if you need a decimal answer
The Solution.
The given points are

The formula is

In this case,

Therefore,



Hence, the correct answer is (-1, 4) (option 3)
Answer:
D...
Step-by-step explanation:
Thats on mine and got it right