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2 years ago

65° (х + 72) i need help with x

Mathematics

1 answer:

tamaranim1 [39]2 years ago

5 0

Answer:

65x+4680

Step-by-step explanation:

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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 ,

$z = x + yi$

is given by:

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

where

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

The given complex number is:

$z = 4 - 10i$

$r = \sqrt{ {4}^{2} + {( - 10)}^{2} }$

$r = \sqrt{16 + 100}$

$r = \sqrt{116} = 2 \sqrt{29}$

And

$\theta= \tan^{ - 1}(\frac{ y}{x} )$

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

$\theta= 292 \degree$

Hence the polar form is :

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

6 0

2 years ago

Can someone help pls

RSB [31]

Answer:

<u>In the middle of winter</u>

Step-by-step explanation:

Setting: The place or type of surroundings where something is positioned or where an event takes place.

6 0

2 years ago

Someone answer even if it’s easy pls

nordsb [41]

Answer:

425

Step-by-step explanation:

Out of 429 matchbox cars, there's only 4 that are blue. Therefore, 429 - 4 = 425. :)

4 0

3 years ago

Please help with number 34 :) thank youu

kotykmax [81]

Proportion if im not mistaken
is over of percent over 100
14 over 168 and x over 100 . 14 times 100 divided b 168 i believe .

5 0

2 years ago

Help me with this to and use pemdas or not

PtichkaEL [24]

(72÷2)³ - 7 · 9 ÷ 9

First, parenthesis

72÷2 is 36

Next, exponents.

36³ is 46656.

Then, multiplication.

7 · 9= 63

After that, division.

63 ÷ 9 is 7

Finally, subtraction.

46656 - 7 is 46649

4 0

2 years ago