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jarptica [38.1K]
3 years ago
5

Hey guys, I need your help again!! This is confusing me.

Mathematics
2 answers:
victus00 [196]3 years ago
3 0
x^2-18x+81=(x-9)^2=(x-9)(x-9)

So it's A.

belka [17]3 years ago
3 0
(x - 9)(x + 9) is incorrect answer

Correct:
x^2 - 18x + 81
= (x - 9)^2
= (x - 9)(x - 9)

Answer
A. The answer is incorrect; the plus sign should be a minus sign.
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Answer:

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Step-by-step explanation:

Recebemos declarações na questão acima para considerar.

Declaração I. O inverso de 0,2 é 5.

Matematicamente, isso é escrito como:

1 / 0,2

0,2 = 2/10

Portanto: 1 ÷ 2/10 = 1 × 10/2

= 5

Afirmação 1 é verdadeira

Declaração II.

O triplo de 2/5 é 6/15.

Triplo de 2/5 = 2/5 + 2/5 + 2/5

= 2 + 2 + 2/5

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Declaração II é falsa

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1/2 de 0,5

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Convertendo em fração

= 0,25 = 25/100

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Declaração III está correta

Portanto, as afirmações verdadeiras são I e III

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