3 years ago

Can someone please help me with this please ASAPPP

Mathematics

1 answer:

Maru [420]3 years ago

8 0

Answer:

a) y= -18x +486

10, y= 306

11, y= 288

12, y= 270

13, y= 252

14, y= 234

15, y= 216

Step-by-step explanation:

I hope this helped! brainliest pls?

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3 years ago

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What algebraic expression must be added to the sum of 3x2 +4x+8 and 2x2−6x+3 to give 9x2−2x−5 as the result?

vesna_86 [32]

Answer:

$4x^2-16$

Step-by-step explanation:

-This is an addition/subtraction problem.

#We subtract the sum of the first two expression from the third expression:

$\#Add \ first \ two\\\\=3x^2 +4x+8 +2x^2-6x+3\\\\=5x^2-2x+11\\\\\# Subtract\ from \ the \ third\\=(9x^2-2x-5)-(5x^2-2x+11)\\\\=9x^2-2x-5-5x^2+2x-11\\\\=4x^2-16$