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user100 [1]
3 years ago
13

Evaluate for x = 2. (12x + 8) 4 A) 4 B) 5 C) 6 D) 8

Mathematics
1 answer:
Aleks [24]3 years ago
3 0
What you want to do here is plug 2 in for x. when a question asks you to evaluate a certain equation at a certain number, it's just asking you to plug the value in for your variable. i'm assuming that 12x + 8 is meant to be set over 4 as a fraction.

(12(2) + 8)/4 ... figure out the top first. 12*2 = 24, 24 + 8 = 32.

32/4 = 8, so your correct choice is D.
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Answer:

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Step-by-step explanation:

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This is the explicit formula for the geometric sequence whose first term is k and common ratio is r

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(Make sure to set f(x) to zero)

So for this equation, I will be factoring by grouping. Firstly, what two terms have a product of -5x^2 and a sum of 4x? That would be 5x and -x. Replace 4x with 5x - x: 0=5x^2+5x-x-1

Next, factor 5x^2 + 5x and -x - 1 separately. Make sure that they have the same quantity on the inside: 0=5x(x+1)-1(x+1)

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Now apply zero product property to the factors to solve for x:

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<u>The x-intercepts are (1/5 ,0) and (-1,0).</u>

5 0
4 years ago
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406452

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