johnkings140

22.05.2020 • 

Mathematics

Assume you have collected data pairs (x, ) on a certain variety of tree. xis
the number of weeks since the tree was planted and y is the height of the tree
in inches. A plot of the data points with the best-fit line is given below. What is
the numerical value of the height as predicted by the best-fit line for an age of
40 weeks?

Ответ:

jessicavasquez081

11.01.2020

Mathematics

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Step-by-step explanation:

9x + 2y = 59 -> 9x = 59 - 2y -> x = (59-2y)/9

2x + 5y = 4 -> 2(59-2y)/9 + 5y = 4 -> (118 - 4y)/9 +5y = 4

118 - 4y + 45y = 4*9 -> 41y = -82 -> y = -2, thus x = 7

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