Name the notes (look at the clef)

1) D sharp  Trouble clef

2) F   Bass Clef

3) B Trouble Clef

4) D  Bass Clef

5) B Flat  Trouble Clef

Explanation:

coordinates of r(b,c)

slope of nm is 0.

step-by-step explanation:

the midpoint of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

the midpoint of the line segment nk is given by

∴r(b,c)

the slope of the line joining the points (x₁,y₁) and (x₂,y₂) is given by

slope of rs is

hence

coordinates of r(b,c)

and slope of nm is 0.

the style of music that was composed during the classical era was concerto grosso.