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lorasvet [3.4K]
3 years ago
6

If fx()=8-10x and g(x)=5x+4, what is the value of (fg)(-2)

Mathematics
1 answer:
lyudmila [28]3 years ago
7 0

So, we are looking for F of G of 2. So, we need to work backwards and find G(x) first.


g(-2)=5(-2)+4\\g(-2)=-6

So we know that g(-2) = -6, now we take thatt -6 and plug in into f(x)

f(g(-2))=f(-6)\\f(-6)=8-10(-6)\\f(-6)=8+60\\f(-6)=68


68 is the answer

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Answer:

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Step-by-step explanation:

We are given that From previous polls, it is believed that 66% of likely voters prefer the incumbent.

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<u>So, the mean of the number preferring the incumbent is given by;</u>

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<u>And, standard deviation of the number preferring the incumbent is given by;</u>

          Variance =  n \times p\times (1-p)  

                          =  500 \times 0.66 \times (1-0.66)

                          =  112.2

So, Standard deviation =  \sqrt{Variance}

                                       = \sqrt{112.2}  = 10.59

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