Answer:
-20
Step-by-step explanation:
-8-12=-20
You would need to change the slope to -6 because perpendicular lines have opposite reciprocal slopes.
Answer:
14, 28, 42, 56, 70, 84
20, 40, 60, 80, 100, 120
Step-by-step explanation:
Answer:
Stephen has 9 trees
Alice has 21 trees
Step-by-step explanation:
<u>At the beginning:</u>
Stephen = x trees
Alice = x + 12 trees
<u>At the end:</u>
Alice = (x + 12) - 4 trees
Stephen = x + 10 trees
Total = 36
Then

Stephen - 9 trees
Alice - 9 + 12 = 21 trees