gwendallinesikes
02.08.2019 •
Mathematics
An apple orchard contains a hundred and twelve trees the number of trees in each row is 2 less than twice the number of rows find the number of rows in the number of trees per row
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Ответ:
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.
Ответ:
The x intercept is 5
Step-by-step explanation:
4x + 2y = 20
To solve for the x intercept, remove the y and solve for x:
4x = 20
x = 5
The x intercept is 5