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stiks02 [169]
3 years ago
11

Which describes the solution set of (5x –1)(x + 2) = 8x – 4?

Mathematics
1 answer:
Lana71 [14]3 years ago
5 0
(5x-1)(x+2)=8x-4
5x²+10x-x-2=8x-4
5x²+9x-2=8x-4
5x²+x+2=0
use the quadratic formula, b²-4ac=1²-4*5*2=1-40=-39, -39 cannot be square rooted, so the equation has no real solution. 
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Using it's concept, the relative frequencies are given as follows:

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<h3>What is a relative frequency?</h3>

A relative frequency is given by the<u> number of desired outcomes divided by the number of total outcomes</u>.

In County 1, we have that there are 6,520 residents, out of which 4,050 are Democratic and 2,470 are Republican, hence the relative frequencies are given as follows:

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In total, there are 24,505 residents, out of which 10,075 are Democratic and 14,430 are Republican, hence the relative frequencies are given as follows:

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More can be learned about relative frequencies at brainly.com/question/23359601

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