Which is equivalent to what i out as the picture?

Mathematics

2 answers:

katen-ka-za [31]4 years ago

7 0

Answer:

B. second option

1.215^1/5(x)

Step-by-step explanation:

√a = a^1/2

5th root (1215)^5 = 1,215^x/5

Answer :

B. second option

1.215^1/5(x)

seropon [69]4 years ago

3 0

Answer option c

Step-by-step explanation:

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Answer:

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Find the measure of two supplementary angles, C and D, if C=6x-4 and D=4x+9

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Answer:

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Step-by-step explanation:

Supplementary means that two angles adds up to 180 degrees.

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3 years ago

Find z 1 ÷ z 2 for z 1 = 9(cos225° + isin225°) and z 2 = 3(cos45° + isin45°).

olga nikolaevna [1]

$\bf \qquad \textit{division of two complex numbers} \\\\ \cfrac{r_1[cos(\alpha)+isin(\alpha)]}{r_2[cos(\beta)+isin(\beta)]}\implies \cfrac{r_1}{r_2}[cos(\alpha - \beta)+isin(\alpha - \beta)] \\\\[-0.35em] \rule{34em}{0.25pt}$

$\bf \begin{cases} z1=9[cos(225^o)+i~sin(225^o)]\\\\ z2=3[cos(45^o)+i~sin(45^o)] \end{cases}\implies \cfrac{z1}{z2}\implies \cfrac{9[cos(225^o)+i~sin(225^o)]}{3[cos(45^o)+i~sin(45^o)]} \\\\\\ \cfrac{9}{3}[cos(225^o-45^o)+isin(225^o-45^o)]\implies 3[cos(180^o)+i~sin(180^o)] \\\\\\ 3[(-1)+i~(0)]\implies -3+0i$