3 years ago

Subtract the complex numbers: (-2 + 12i) - (-1 - 9i)

Mathematics

2 answers:

jasenka [17]3 years ago

8 0

Answer:

B. -3 + 3i

Step-by-step explanation:

Using the foil method:

-2 - 1 = -3

12i - 9i = 3i

= -3 + 3i

Andrew [12]3 years ago

3 0

9514 1404 393

Answer:

C) -1 +21i

Step-by-step explanation:

For many purposes, "i" can be treated as though it is a variable. Collect terms in the usual way.

(-2 +12i) -(-1 -9i) . . . . given

= -2 +12i +1 +9i . . . . use the distributive property to eliminate parentheses

= (-2+1) +(12i +9i) . . . group like terms

= -1 +21i

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Makovka662 [10]

Answer: (3, -2)

Step-by-step explanation:

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4 years ago

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Lorico [155]

Answer:

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Step-by-step explanation:

Given

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3 years ago

Read 2 more answers

-4x-9y=1 -x+2y=-4 send help thanks

evablogger [386]

Hey those are linear functions, gotta find Y or X and draw on two axis X/Y. in first y = 4/9x + 1/9. in second y = X/2 - 2.

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3 years ago

Consider the random variables X and Y with joint density function ???? f(x,y)= x+y, 0≤x≤1;0≤y≤1 0, elsewhere. (a) Find the margi

sp2606 [1]

a. The marginal densities

$f_X(x)=\displaystyle\int_0^1(x+y)\,\mathrm dy=x+\frac12$

and

$f_Y(y)=\displaystyle\int_0^1(x+y)\,\mathrm dx=y+\frac12$

b. This can be obtained by integrating the joint density over [0.25, 1] x [0.5, 1]:

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3 years ago

Ratio comparing 12 yds to 12 in is? __:1

const2013 [10]

I'm pretty sure the answer is 3:1 because there are 36 inches in three yard and if you simplified 36:12, it would be 3:1.

Good luck my man.

7 0

4 years ago