Square root -64 minus square root -25... complex numners.. i am so confused

Mathematics

2 answers:

allochka39001 [22]3 years ago

7 0

The answer would be 3

Galina-37 [17]3 years ago

3 0

$\sqrt{ - 64} - \sqrt{ - 25} \\ 8i - 5i \\ 3i \\$
square root of negative is an imaginary solution or number. meaning it exist somewhere. square root of 64 is 8 and the square root of 25 is 5. "i" represent imaginary number

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Zolol [24]

We are asked to find 7 is what percent to 30.

We will use proportions to solve our given problem.

Let us assume that 7 is n% of 30. So we can set a proportion as:

$\frac{n}{100}=\frac{7}{30}$

Let us solve for n.

$\frac{n}{100}\cdot 100=\frac{7}{30}\cdot 100$

$n=\frac{7}{3}\cdot 10$

$n=\frac{70}{3}$

$n=23.333$

Therefore, 7 is $23.333\%$ of 30.

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3 years ago

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If you would like to simplify (3 * x + 5) + (2 * x - 9) - (4 * x + 3), you can do this using the following steps:

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The correct result would be x - 7.

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