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Debora [2.8K]
4 years ago
13

Enter the value of a and b that complete the sum: 3/x + 5/x^2 = ax+b/x^2

Mathematics
1 answer:
Aleksandr [31]4 years ago
4 0

Answer:

a=\frac{3}{x^{2} }

b=5

Step-by-step explanation:

we are given

\frac{3}{x} }+\frac{5}{x^{2} }=ax+\frac{b}{x^{2} }

we will compare both sides of equaion

 \frac{b}{x^{2} }=\frac{5}{x^{2} }

comparing both sides we get

b=5

and

\frac{3}{x} }=ax

a=\frac{3}{x^{2} }

hence

a=\frac{3}{x^{2} }

and   b=5

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Answer:

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Below age 15            87                    60        18           165

Age 15 and above   65                    50        80         195

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We know that a relative frequency of an event is the ratio of frequency to the total number of trials.

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Hence,the table is given as:

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Below age 15            0.24               0.17      0.05         0.46

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Answer:

x = 6, y =3

Step-by-step explanation:

4x-7y=3

x-7y=-15

Multiply the first equation by -1

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Then add this to the second equation to eliminate y

-4x+7y=-3

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------------------

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Divide by -3

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