2 years ago

14 dollars for 4 books

Mathematics

2 answers:

Rudiy272 years ago

8 0

Answer:

ur question

Step-by-step explanation:

dunno

elixir [45]2 years ago

4 0

3.5 dollars for 1 book

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Write the expression (2−3i)+5i(1−3i)<br> as a complex number in standard form.

Katarina [22]

Answer:

17 + 2i

Step-by-step explanation:

Given

(2 - 3i) + 5i(1 - 3i) ← distribute both parenthesis

= 2 - 3i + 5i - 15i² [ i² = - 1 ]

= 2 + 2i + 15

= 17 + 2i ← in standard form

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3 years ago

Which equation is satisfied by all of the plotted points?

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Answer:

is this a multiple answer question

Step-by-step explanation:

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Tell Me if I'm Wrong But I Believe It's 198m3

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3 years ago

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Sveta_85 [38]

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3 years ago

Evaluate arithmetic series:-<br><br> Step-by-step answer, please!

lorasvet [3.4K]

Let's see

$\\ \rm\Rrightarrow {\displaystyle{\sum^{275}_{k=1}}}(-5k+12)$

$\\ \rm\Rrightarrow (-5(1)+12)+(-5(2)+12)\dots (-5(275)+12)$

$\\ \rm\Rrightarrow 7+5+3+2+1+\dots -1363$

a=7
l=-1363
n=275

Sum:-

$\\ \rm\Rrightarrow S_n=\dfrac{n}{2}[a+l]$

$\\ \rm\Rrightarrow \dfrac{275}{2}(7-1363)$

$\\ \rm\Rrightarrow \dfrac{275}{2}(-1356)$

$\\ \rm\Rrightarrow 275(-678)$

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2 years ago

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14 dollars for 4 books​

14 dollars for 4 books