steegt86grmn steegt86grmn

08-09-2020
Mathematics

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If s ( x ) = 2 - x² and t ( x ) = 3x, what is s ( t ( -7 ) )?

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mhanifa mhanifa

09-09-2020

Answer:

- 439

Step-by-step explanation:

s ( x ) = 2 - x²
t ( x ) = 3x
s ( t ( -7 ) ) = ?

--------------------------

t (-7) = 3 * ( -7 ) = -21
s ( t ( -7 ) ) = s ( -21 ) = 2 - ( -21 )² = 2 - 441 = - 439
s ( t ( -7 ) ) = -439

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