Answer:
x = 27
Step-by-step explanation:
Since l, m, and n are cut across by the two transversal lines, therefore, the transversal lines are cut off proportionally.
This implies that:
6/x = 10/45
Cross multiply
x*10 = 45*6
10x = 270
10x/10 = 270/10
x = 27
Answer:

Step-by-step explanation:







5.21 would just be 5 or 5.2 depending on what place you need to round.
True.
Distribute 3 to all terms within the parenthesis
3(4h + 2k) = 3(4h) + 3(2k) = 12h + 6k
hope this helps