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astra-53 [7]
4 years ago
6

When using the inspection method, which number would you add to (and subtract from) the constant term of the numerator in this e

xpression so the polynomial in the numerator will have (x 4) as a factor?
Mathematics
2 answers:
finlep [7]4 years ago
5 0

Answer:

3

Step-by-step explanation:

Elina [12.6K]4 years ago
3 0
To be able to factor x + 4 from the last two terms, you need the unit coefficient to be 4 x 18 = 72, so you need to add and subtract 68: 
<span>(x + 4)x + 18x + 4 + 68 - 68 </span>
<span>(x + 4)x + 18x + 72 - 68 </span>
<span>(x + 4)x + (x + 4)18 - 68 </span>

<span>So you end up with: </span>
<span>(x + 4)(x + 18) - 68 </span>

<span>Answer: </span>
<span>Add and subtract 68</span>
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The average of 8 scores is Q. If the average of 3 of the scores is Z, what is the average of the other 5 scores?
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\dfrac{s_1+\cdots+s_8}{8}=Q\implies s_1+\cdots+s_8=8Q
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Substituting into the first equation, this means

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Divide by 5 to get the average:

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When a certain type of thumbtack is​ flipped, the probability of its landing tip up​ (U) is 0.66 and the probability of its land
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