Theories have been developed about the heights of winning candidates for the U. S. presidency and the heights of candidates who were runners-up. Listed in the table are heights from recent presidential elections. Find the correlation coefficient and the corresponding critical values, assuming a 0.05 level of significance. Is there a linear correlation between the heights of candidates who won and the heights the candidates who were runners-up? Winner 69.5 73 73 74 74.5 74.5 71 Runner-up 72 69.5 70 68 74 74 73 76

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answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)

y=20x

: )

hope this

add them

step-by-step explanation:

idk you did not give the options or numbers so you cant solve it