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NARA [144]
3 years ago
9

27.9 is what percent of 62

Mathematics
2 answers:
Murrr4er [49]3 years ago
7 0
You multiply 27.9*62%= 17.30
natta225 [31]3 years ago
6 0
62 ....... 100%
27.9 ..... X%

X = (27.9 x 100) / 62 = 2790 / 62 = 45
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Complete the steps to solve the polynomial equation x3 – 21x = –20. According to the rational root theorem, which number is a po
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Answer:

Zeroes : 1, 4 and -5.

Potential roots: \pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20.

Step-by-step explanation:

The given equation is

x^3-21x=-20

It can be written as

x^3+0x^2-21x+20=0

Splitting the middle terms, we get

x^3-x^2+x^2-x-20x+20=0

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Splitting the middle terms, we get

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Using zero product property, we get

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x+5=0\Rightarrow x=-5

Therefore, the zeroes of the equation are 1, 4 and -5.

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x=\dfrac{\text{Factor of constant}}{\text{Factor of leading coefficient}}

Constant = 20

Factors of constant ±1, ±2, ±4, ±5, ±10, ±20.

Leading coefficient= 1

Factors of leading coefficient ±1.

Therefore, the potential root of the polynomial are \pm 1, \pm 2, \pm 4, \pm 5, \pm 10, \pm 20.

3 0
3 years ago
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