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Aleksandr [31]
3 years ago
11

Please do not send me p d f s or links

Mathematics
1 answer:
Sedbober [7]3 years ago
7 0

Answer:I know you said no PDFs but I know this site that can help you. Just search up ‘Desciptive Statistics Calculator’ it can help you a lot

Step-by-step explanation:

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The roots of a quadratic equation ax2+bx+c=0 are 1+i 5 and 1−i 5 . Find possible values of a, b and c.
Anarel [89]

Answer:

Step-by-step explanation:

If the roots are 1 + 5i and 1 - 5i, then you need the factors that result from those roots.  They are (x - 1 + 5i) and (x - 1 - 5i).  Now what you do with those is FOIL them out.  Doing that gives you the following:

x^2-x+5ix-x+1-5i-5ix+5i-25i^2 (what a mess, huh?)

The good thing is that several of those terms cancel each other out.  +5ix cancels out the -5ix; -5i cancels out the 5i; and the 2 -x terms combine to -2x.  That leaves you with:

x^2-2x-25i^2

Obviously you're in the section in math that deals with complex (imaginary) numbers so you should know that i-squared is equal to -1.  Making that replacement:

x^2-2x+25

a = 1, b = -2, c = 25

6 0
3 years ago
Read 2 more answers
Please don’t answer just for points! Help is really needed~
Galina-37 [17]

i dont understand

what do we need to do?

4 0
2 years ago
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The N71-90 virus will give an infected person a mild rash on their arms once the person has 1 billion of the virus cells in thei
Naya [18.7K]

Answer:

  • B. 256

Step-by-step explanation:

<u>Given function:</u>

  • v(h) = 2^(h/4)

<u>It can be rewritten as:</u>

  • v(d) = 2^d, where d- number of divisions

<u>If number of divisions is 8, then:</u>

  • v(8) = 2^8 = 256 virus cells

Correct choice is B

4 0
3 years ago
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2/3 - 5/6 - 7/9 = simplifying
ch4aika [34]

Answer:

-17/18

Step-by-step explanation:

find least common multiple, which is 18

multiply the numerators by the number you multiplied on the denominator.

and subtract.

7 0
3 years ago
Find the area of the polygon with the given vertices x(2,4) y(0,-2) z(2,-2)
weeeeeb [17]

Answer:

6

Step-by-step explanation:

b = 2 units

h = 6 units

A=1/2 *b*h

= 1/2 *6*2

= 6

8 0
2 years ago
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