3 years ago

Find the solution to the system: x=2y-7 and 4x+y=71

1 answer:

7 0

4*(2y-7)+y=71

8y-28+y=71

9y=71+28

y=99/9

So y=11

Again putting value of y in first equation

x=2*11-7

x=22-7

x=15

So value if x is 15 and y is 11

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According to the rational root theorem, what are all the potential rational roots of f(x)=5x^3-7x+11

Genrish500 [490]

Answer:

$\pm11,\pm1,\pm\frac{11}{5},\pm\frac{1}{5}$

Step-by-step explanation:

The given polynomial function is

$f(x)=5x^3-7x+11$

According to the Rational Roots Theorem, the ratio of all factors of the constant term expressed over the factors of the leading coefficient.

The potential rational roots are

$\pm\frac{11}{1}=\pm11$

$\pm\frac{1}{1}=\pm1$

$\pm\frac{11}{5}$

$\pm\frac{1}{5}$

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4 years ago

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Answer:

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3 years ago

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Vsevolod [243]

Add 40 plus 32, it equals 72 because he wrote 40 popular songs and 32 songs.

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The table below shows the amount of money, in hundreds of dollars, Elliot has saved after different numbers of years:

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Table:
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