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yulyashka [42]
3 years ago
11

Keith filled his gas tank three times last week. Here are the amounts of gas he bought (in gallons).

Mathematics
2 answers:
alexira [117]3 years ago
4 0
You just have to add all those values..

12.2 + 8.72 + 10 = 30.92

Keith bought 30.92 amount of gas last week
Degger [83]3 years ago
3 0
 <span> 8.72 + 10 +12.2  = 30.92
30.92 gallons of gas last week
</span>
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4/2+8=2+8=10
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Please help! Will give brainly, 50 points!! I'm stuck with this question and I don't get it!!
Anton [14]

His answer was (x- +2) (x^2-9)

a) His mistake was he has x^2 in one of the parenthesis, to be fully factored you cannot have an exponent as part of the answer.

b) x^3 - 9x + 2x^2 -18

Reorder the terms:

x^3 +2x^2 -9x -18

Group the first two terms and the last two terms

(x^3 + 2x^2) -9x-18

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Factor the polynomial by factoring out the common factor once x+2:

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Rewrite 9 as 3^2:

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Factor one last time:

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Gwar [14]

By using the property of exponential function, the results obtained are

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brainly.com/question/11975096

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