Answer:
A device used by muscians that marks the time at a selected rate by giving a regular tick.
another definition is a mechanical or electrical instrument that makes repeated clicking sounds at an adjustable pace.
Hope this helps :)
For #7 - part a: greatest common factor (GCF) is 5.
Part b: cross out everything BUT 10 & 20.
X is an exterior angle so it’s 35+58 which equals 93
