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3 years ago

What is the recursive formula of the arithmetic sequence 0,11,22,33,

Mathematics

1 answer:

ArbitrLikvidat [17]3 years ago

7 0

Answer:

f(1)=0

f(x+1)=f(x)+11

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Two complex numbers are represented by c + di and , where c, d, e, and f are positive real numbers. In what two quadrants may th

myrzilka [38]

Answer: In quadrant 1 or quadrant 2.

Step-by-step explanation:

We have the numbers:

x = c + di

y = e + fi

where c, d, e and f are real positive numbers.

the product of these numbers is:

x*y = (c + di)*(e + fi) = c*e + c*fi + d*ei ´+d*f*i^2

x*y = c*e - d*f + (c*f + d*e)i

where I used that i^2 = -1

knowing that c,f, d and e are positive numbers, then the imaginary part of the product must be always positive.

For the real part, we have c*e - d*f, that can be positive o negative depending on the values of c, e, d, and f.

So we have that the product must lie always in one of the upper two quadrants, quadrant 1 or quadrant 2 because the imaginary part is always positive and the real part can be positive or negative.

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3 years ago

Please help quickly!

bekas [8.4K]

Answer:

the answer is 2.8

Step-by-step explanation:

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2 years ago

Read 2 more answers

What is the mean absolute deviation of the following data set?

frosja888 [35]

36.25??? (don't quote me on that tho)

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3 years ago

6n^2-30n+42 can someone help me

sesenic [268]

Answer:

$\frac{5+i\sqrt{3}}{2}}$

Step-by-step explanation:

I assume you want the roots. Here we go:

Use the quadratic formula: $\frac{-(-30) plus or minus \sqrt{(-30)^2-4(6)(42)} }{2\cdot6}$ .

The discriminant is 900 - 1008, or -108 (so we will need i, the complex number that means $\sqrt{-1}$ ).

This means on the top you get 30 + 6isqrt3 and on the bottom you get 12.

So the fraction is $\frac{30+6i\sqrt{3}}{12}=\boxed{\frac{5+i\sqrt{3}}{2}}.\blacksquare$

Note: This is just one of the roots, I am sure you can find the second one!

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3 years ago

Percentage cheat!!!

Gennadij [26K]

Answer:

if its .140 then it would be 14%

Step-by-step explanation:

right?

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3 years ago