Answer:
C) 15
Step-by-step explanation:
This is an isosceles triangle (two of the three angles are equal) so two of the sides are also equal. x is the same length as 15.
Answer:
1x-1y
Step-by-step explanation:
For #7 - part a: greatest common factor (GCF) is 5.
Part b: cross out everything BUT 10 & 20.