4 years ago

Please help me real quick i need this question.

Mathematics

1 answer:

andrew11 [14]4 years ago

3 0

B because ur mom is hot

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3+5i/-2+3i perform operation

melisa1 [442]

Answer:

$\dfrac{9}{13}-\dfrac{19}{13}i$

Step-by-step explanation:

Remember $i^2=-1$

You are given the fraction $\dfrac{3+5i}{-2+3i}$

First, multiply the numerator and the denominator by -2-3i:

$\dfrac{3+5i}{-2+3i}=\dfrac{(3+5i)(-2-3i)}{(-2+3i)(-2-3i)}=\dfrac{(3+5i)(-2-3i)}{(-2)^2-(3i)^2}=\dfrac{(3+5i)(-2-3i)}{4-9i^2}=\dfrac{(3+5i)(-2-3i)}{4+9}$

This gives you 13 in denominator, now multiply two complex numbers in numerator:

$(3+5i)(-2-3i)=-6-9i-10i-15i^2=-6-19i+15=9-19i$

Thus, the initial fraction is

$\dfrac{9-19i}{13}=\dfrac{9}{13}-\dfrac{19}{13}i$

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3 years ago

a phone call costs $.75 for the first 2 minutes and $.25 for each additional minute. if the total charge for the call was $10.25

nekit [7.7K]

42 minutes

(10.25-7.5)/0.25=42

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3 years ago

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How are the two triangles congruent? If not congruent, select not

Vedmedyk [2.9K]

Answer:

SAS

Step-by-step explanation:

there are vertical angles in the middle and the sides are already marked

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3 years ago

Find the value of x and the measure of the missing angle labeled A:

Nostrana [21]

Answer:

x = -2

∠A = 35

Step-by-step explanation:

x + 37 + x + 57 = 90

reduce:

2x = -4

x = -2

∠A = 37-2 = 35

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3 years ago

X+2=0 help thanks this is hard

djyliett [7]

-2+2=0

I hope I helped

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4 years ago

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