3 years ago

I really need help I will make most Brainly

Mathematics

1 answer:

anygoal [31]3 years ago

4 0

Answer:

I believe it's 70% but then again I'm not sure

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4 years ago

How does acidic soil negatively affect living things?

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2 years ago

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Step-by-step explanation:

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3 years ago

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A manager earned £42000 last year this year he got a 3.5% pay raise what is his new salary

stira [4]

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3 years ago

Determine the unknown coefficient a, if x + 3 is a factor of f(x) = 2x^3 + ax^2+ 19x + 3

Marysya12 [62]

Answer:

$a=12$

Step-by-step explanation:

Work backwards with synthetic division with remainder 0 and then solve for a:

-3 | 2 a 19 3

_________

2 | 0

-3 | 2 a 19 3

_______ -3

2 | 0

-3 | 2 a 19 3

_______ -3

2 1 | 0

-3 | 2 a 19 3

_____-18 -3

2 1 | 0

-3 | 2 a 19 3

_____ -18 -3

2 6 1 | 0

-3 | 2 a 19 3

_____ -18 -3

2 6 1 | 0

-3 | 2 a 19 3

____-6 -18 -3

2 6 1 | 0

a - 6 = 6

a = 12

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2 years ago