Answer:
x = 7
Step-by-step explanation:
199 and 201
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Answer:
Step-by-step explanation:
Factoring results in
Forget about the minus sign until you're done, then slap it back on.
-1 1/2 = -(1 1/2) = -(3/2) = -3/2
Let x be the number of rows and y be the number of trees per row.
x* y = 112
and y = 2x - 2
from first equation y = 112/x
so 112/x = 2x - 2
112 = 2x^2 - 2x
2x^2 - 2x - 112 = 0
x^2 - x - 56 = 0
(x - 8)(x + 7) = 0
x = 8 , - 7 (ignore the negative)
so the number of rows = 8
and number of trees per row = 112/8 = 14
Answer number of rows = 8 and number trees i each row = 14.