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3 years ago

What is the word form for 2.51 and expanded form

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

6 0

Word Form:
Two and fifty-one hundredths

Expanded Form:
2 + 0.5 + 0.01

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Have A Good Day!!!

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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

3 years ago

Can someone help me on this

masha68 [24]

The answer to this question is 120winners

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3 years ago

10x+8=3(x-2) 10x+8=3x-6

d1i1m1o1n [39]

Answer:

x = -2

Step-by-step explanation:

10x+8=3x-6

subtract 10x-3x

7x+8= -6

subtract -6-8

7x=-14

divide 7 into -14

x = -2

Hope this helps!

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2 years ago

Priya makes bracelets for her online store. Her monthly business expenses are $520. She sells an average of 80 bracelets per

ch4aika [34]

Answer:

Step-by-step explanation:

Profit = total revenue - total cost

total revenue = 80 x b

total cost = 520

the profit has to be at least $1240

80 x 22 = 1760

1760 - 520 = 1240

b is correct

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3 years ago

Question 4 (1 point)<br> (-7x + 5) - (-82 – 6) =

Keith_Richards [23]

no ye puedo ayudar amigo o amiga

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