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3 years ago

11

0.00000000001 convert number to scientific notation

2 answers:

miss Akunina [59]3 years ago

8 0

The scientific notation is:

<u><em>1.0 x 10^-11</em></u>

Rus_ich [418]3 years ago

4 0

$0.00000000001 = 1.0\ X\ 10 ^{-11} \ \ Answer$

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Determine if the equation y = 2/5 x − 4 y=25x-4 represents a proportional relationship. If so, determine the constant of proport

Vilka [71]

Answer:

The linear equation represents a proportional relationship and its constant of proportionality is $k = \frac{2}{5}$ .

Step-by-step explanation:

A proportional relationship exists when the following relationship is observed:

$u = k\cdot v$

Where:

$u$ - Dependent variable.

$v$ - Independent variable.

$k$ - Proportionality constant.

If $y =\frac{2}{5}\cdot x - 4$ and $v = x$ and $u = y+4$ , the following expresion is found:

$y = \frac{2}{5}\cdot x -4$

$y + 4 = \frac{2}{5}\cdot x$

$u = \frac{2}{5}\cdot v$

The linear equation represents a proportional relationship and its constant of proportionality is $k = \frac{2}{5}$ .

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Leviafan [203]

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Softa [21]

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Step-by-step explanation:

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3 years ago

Convert the complex number z = 4 - 10i from rectangular form to polar form.

mrs_skeptik [129]

ANSWER

$r = 2 \sqrt{29} ( \cos(292 \degree) + \sin(292 \degree))$

EXPLANATION

The polar form of a complex number ,

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$z = r( \cos( \theta) + i \sin( \theta) )$

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$r = \sqrt{ {x}^{2} + {y}^{2} }$

The given complex number is:

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$r = \sqrt{16 + 100}$

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And

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$\theta= \tan^{ - 1}(\frac{ - 10}{4} )$

$\theta= 292 \degree$

Hence the polar form is :

$r = 2 \sqrt{29} ( \cos(292 \degree) + \sin(292 \degree))$

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