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Airida [17]
3 years ago
11

10 & 11 WILL GIVE BRAINLIST

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
8 0

Answer:

D.

Step-by-step explanation:

(g-f)(x) ➡ g(x) - f(x)

9x {}^{3}  - 4 {x}^{2}  + 10x - 55 - (4 {x}^{3}  + 3 {x}^{2}  - 5x + 20)

➡

9 {x}^{3}  - 4 {x}^{2}  + 10x - 55 - 4 {x}^{3}  - 3 {x}^{2}  + 5x - 20

➡add the like terms

5 {x}^{3}  - 7 {x}^{2}  + 15x - 75

ra1l [238]3 years ago
3 0

Answer:

10)$38.50

11)D

Step-by-step explanation:

10) n = no. of rides

f(n) + g(n) = 1 + 2.5n

when n=15, 1 + 2.5(15)

= $38.50

11)f(x) = 4x³+3x²-5x+20

g(x) = 9x³-4x²+10x-55

(g-f)(x)=9x³-4x²+10x-55-(4x³

+3x²-5x+20)

= 9x³-4x²+10x-55-4x³

-3x²+5x-20

= 5x³-7x²+15x-75

(Correct me if i am wrong)

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