Answer: There are 27 trees that Abe can plant in each row. And there are 1 pine tree and 2 oak tree in each row.
Explanation:
Since we have given that
Number of oak trees = 54
Number of pine trees = 27
According to question, we have given that Abe wants to plant the trees in rows that all have the same number of trees and are made up of only one type of tree.
So, the greatest number of trees is given by

Hence, there are 27 trees that Abe can plant in each row.
Therefore, there are 
Answer: 10 : 9
Step-by-step explanation:
GIVEN
20 girls tried out
18 boys tried out
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The final ratio should be girl to boy
girl to boy
=20 : 18
=10 : 9 ⇔ divide 2 on both sides (simplify the ratio)
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Answer:
y = 1/7x - 8/7
Step-by-step explanation:
y = 7x+8
x=7y+8
x-8 = 7y
1/7x-8/7 = y