yeremy123 yeremy123

20-04-2018
Mathematics

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if z(t)=2t²+7t-4, find z(-3) and z(4).
A) z(-3)=-43; z(4)= 56
B) z(-3)=-7; z(4)= 56
C) z(-3)=21; z(4)= 35
D) z(-3)=11; z(4)= 88

Respuesta :

calculista calculista

20-04-2018

z(t)=2t²+7t-4,

Then

z(-3) = 2(-3)**2 +7(-3) -4

z(-3) = 2*9 -21 -4 = 18 -25 = -7

z(4) =2(4)**2 +7(4) -4

z(4) =2(16)+28 -4 = 32 +24 = 56

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