2 years ago

What is the same as the difference between a number and itself

Mathematics

1 answer:

Mama L [17]2 years ago

4 0

Answer: half the number?

If you write an equation for it:
Let the number be x
1/2x = x - 1/2x

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Yara multiplies and divides a certain number by the same

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For this case we have to:

x: Represents the unknown number

y: Represents the exponent of base 10

So, considering a system of equations we have:

$x * 10 ^ y = 40,000\\\frac {x} {10 ^ y} = 0.000004$

From the first equation we have:

$10 ^ y = \frac {40,000} {x}$

Substituting in the second equation:

$\frac {x} {\frac {40,000} {x}} = 0.000004\\\frac {x ^ 2} {40,000} = 0.000004\\x ^ 2 = 40,000 * 0.000004\\x ^ 2 = 0.16\\x = \pm \sqrt {0.16}$

We choose the positive value:

$x = 0.4$

So, the number is 0.4.

So:

$10 ^ y = \frac {40,000} {0.4}\\10 ^ y = 100,000\\y = 5$

Thus, the exponent is 5.

Answer:

Yara use 0.4 and $10 ^ 5$

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3 years ago

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Answer:

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Step-by-step explanation:

2x=24y

divide by 2 on both sides

x=12y

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