Answer:
D : 21
Step-by-step explanation:
because YZ is linger than 18 and the only option longer than 18 is 21
-6. its to make the equation equal
C) 3:4=9:12
Once you simplify 9:12 they express a true proportion.
Let time be t , distance be d
Put value in eq(2)



Answer:
50
Step-by-step explanation:
The sum of a triangle's angles are 180 so since you know one angle is 80, you would put 2x + 80 = 180, which would be 2x = 100, which simplifies to x = 50