Answer:
In the picture.
Step-by-step explanation:
Note : From 1 to 12 it's the same idea but without variables (very easy) so , just do the same idea.
I solved the problems contained variables
I hope that it's a clear explanation.
Answer:
The 3rd answer i think
Step-by-step explanation:
Well first, you have to know the distance formula. You plug the coordinates into it and you get the answer.

√1² + -7² = d
d = 7.1
Answer:
Metronome
Step-by-step explanation:
Metronome gives a steady beat to people that cant count beats in a measure
Answer:
the volume is 15.7 in. 3............