Answer:
- 12k² + kl
Step-by-step explanation:
Given
7kl - 3k(4k + 2l) ← distribute parenthesis by - 3
= 7kl - 12k² - 6kl ← collect like terms
= - 12k² + kl
Answer:
A. 
Step-by-step explanation:
Each mark represent 0.1 unit, so if you count from 0 to
you get 0.5 that is exactly the same that
(for convention the left of the 0 is taken as negative and the right as positive).
First, 1950m=1.95km, as 1000m=1km.
Then, 2.5-1.95=0.55km
0.55km = 550m