C. 2
2x10 = 20 +10x10=100 100+20= 120
12x10=120
C. is the answer.
Answer: By using EDL(Euclid's Division Lemma), the answer we get is 14
so,
42 = 28(1) + 14
28 = 14(2) + 0
therefore, HCF(or greatest common factor) = 14
Arc AC would be 90 degrees because the line is bisects the straight line (180 Degrees)
Answer: 90 Degrees
X=5 if you solve the equation 20=8x/2