Simplify
(9x^5 + 5x^4 – 9x^2 + 10x) – (12x^5 + 2x^4 – x^2 – 9)

− 3 x 5 + 3 x 4 − 8 x 2 + 10 x + 9 is your answer simplified answer :)

Step-by-step explanation:

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-3x^5+3x^4-8x^2+10x-9

Step-by-step explanation:

(9x^5-12x^5)+(5x^4-2x^4)+(-9x^2+x^2)+(10x)+(-9)

-3x^5+3x^4-8x^2+10x-9

If this helps please mark as brainliest

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.

an = 22 + (n-1) *6

110 seats

step-by-step explanation:

an=a1+(n-1)(d)

a1 = 22   this is the first item in the sequence

d =6   this is how the sequence goes up

a)   an = 22 + (n-1) *6

b) a12 = 22 + (12-1) *6

    a12 = 22+11*6

  a12 = 22 +88

  a12 = 110