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4 years ago

What is the value of (-3+3i)+(-2+3i)?

Mathematics

2 answers:

I am Lyosha [343]4 years ago

4 0

Answer:

The value is of given expression is -5+6i.

Step-by-step explanation:

The given expression is

$(-3+3i)+(-2+3i)$

It can be written as

$-3+3i-2+3i$

Now combine like terms.

$(-3-2)+(3i+3i)$

$(-3-2)+(3+3)i$

Simplify each parenthesis.

$(-5)+(6i)$

$-5+6i$

Therefore the value is of given expression is -5+6i.

Yakvenalex [24]4 years ago

3 0

-3+(-2)= -5
-5+ 3i + 3i =
-5 + 6i

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Answer: a ≥ 14 or a ≤ 4

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3 years ago

Is y = 4x + 2 parallel or perpendicular

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Step-by-step explanation:

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3 years ago

Select the correct answer from each drop-down menu.

mr_godi [17]

Answer:

correct option for first blank is 5/4 and for second blank is $\frac{ 3i\sqrt{7}}{4}$

i.e m= $\frac{5}{4}\pm\frac{ 3i\sqrt{7}}{4}$

Step-by-step explanation:

The given equation

$m^2 - \frac {5m}{2} = \frac{-11}{2}$

and we have to find m= ______ ± ________

We can use quadratic formula to solve this question.

The above equation can be written as: $m^2 - \frac {5m}{2} + \frac{11}{2} = 0$

and the formula used will be:

$m= \frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Putting values of a= 1, b= -5/2 and c= 11/2 and solving we get: $m=\frac{-\frac{-5}{2}\pm\sqrt{{(\frac{-5}{2})}^2-4(1)(\frac{11}{2})}}{2(1)}\\\\m=\frac{\frac{5}{2}\pm\sqrt{(\frac{25}{4})-22}}{2}\\m=\frac{\frac{5}{2}\pm\sqrt{(\frac{-63}{4})}}{2}\\m= \frac{\frac{5}{2}}{2}\pm\frac{\sqrt{(\frac{-63}{4})}}{2}\\m= \frac{5}{4}\pm\frac{\sqrt{-63}}{4}$

Since there is - sign inside the √ so $\sqrt{-1}$ is equal to i and we have to divide $\sqrt{63}$ into its multiples such that the square root of one multiple is whole no so,

$\sqrt{63}$ = $\sqrt{9}* \sqrt{7}$ = $3* \sqrt{7}$

Putting value of $\sqrt{63}$ and $\sqrt{-1}$

the value of m= $\frac{5}{4}\pm\frac{ 3i\sqrt{7}}{4}$

so, correct option for first blank is 5/4 and for second blank is $\frac{ 3i\sqrt{7}}{4}$ .

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3 years ago

If there 3 cats and 3 dogs how mush would be together

WARRIOR [948]

Answer:

Step-by-step explanation:

3+3 = 6

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3 years ago

Read 2 more answers

Which number has point symmetry? 707 619 33 18

lilavasa [31]

Answer:

The correct answer is 619.

Step-by-step explanation:

A number is said to have point symmetry when turning it upside down, that is, turning it 180º, remains the same.

As for geometric figures, the same thing happens. It is symmetrically the same if it is built around a center and when turning it does not change its shape.

That is why the correct option is 619 (6I9).

8 0

3 years ago