Answer:
feldspar, because it has a higher number then gypsum and apatite, and it can be scratched by quartz because it has a lower number.
Answer:
It appears to be substitution
Step-by-step explanation:
I think you are talking about system of equations
Answer:
x =60 ° angles on a straight line
y+25° =120° exterior angle of the triangle
y=120°-25°=95°
y =95 °
Segment GZ and Segment XY
I hope that this helped you!