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Taya2010 [7]
3 years ago
13

Factor x2-3x - 28

Mathematics
1 answer:
AVprozaik [17]3 years ago
5 0

Answer:

x equal to -4 or 7

Step-by-step explanation:

x square - 3 x - 28 equals 0 so for me are you now find factors of 28 that and you add you add or multiply those two factors to get those two factors to give you 28 so now so you know Factor ways to get (open x + 4) Close x (open x - 7) close equal to zero your ex number comes -4 or 7

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Write a quadratic function f(x) for the area of a rectangle length x+5 width 3x-7
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The area of a rectangle is the product of its length and width.
l=x+5 \\
w=3x-7 \\ \\
A=lw=(x+5)(3x-7)=3x^2-7x+15x-35=3x^2+8x-35 \\ \\
\boxed{f(x)=3x^2+8x-35}
7 0
3 years ago
The first term of an arithmetic sequence is -5, and the tenth term is 13.
Nitella [24]

Answer:

The common difference is 2

Step-by-step explanation:

The formula for an arithmetic sequence is

an = a1+d(n-1)

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Divide each side by 9

18/9 = 9d/9

2 =d

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3 years ago
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Answer:

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Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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