B. 1 and 3
Triangle 1 is considered scalene as it has 3 sides all different sizes
And the same applies for triangle 3
2(7m-3) = 12m+1
14m-6 = 12m+1
2m = 7
m = 7/2
Answer:
3.65
Step-by-step explanation:
Twenty is 40% of 50 because 10% of 50 is 5 so 5*4 = 20
