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SCORPION-xisa [38]
3 years ago
7

If the sum of twice a number and -10 is multiplied by -4, the result is 61 greater than the opposite of the number. What is the

number?
Mathematics
1 answer:
kogti [31]3 years ago
8 0
-4(2x-10)=-x+61
-8x+40=-x+61
-7x+40=61
-7x=21
x=-3
the number is -3
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Considere as seguintes afirmações: I. O inverso de 0,2 é 5. II. O triplo de \frac{2}{5} é \frac{6}{15}. III. A metade de 0,5 é \
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Answer:

I e III

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

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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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