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3 years ago

Write (1-i)-(4-5i) as a complex number in standard form. I don't exactly get how to do this.. Can anyone help?

Mathematics

1 answer:

elena-s [515]3 years ago

3 0

You just subtract. The standard form of a complex number is a+bi
1 - 4 = -3
-i - (-5i) = 4i
The answer is -3 + 4i

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3 years ago

If you invest $ 30 , 700 with an annual interest rate of 8.9 % , compounded daily, how much would you have at the end of 4 years

alexandr402 [8]

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Step-by-step explanation:

Formula to calculate the accumulated amount earned on principal (P) at rate of interest (r) compounded daily after t years :

$A=P(1+\dfrac{r}{365})^{365t}$

As per given , we have

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$A=30700(1+\dfrac{0.089}{365})^{365(4)}\\\\=30700(1+0.0002438)^{365(4)}\\\\=30700(1.0002438)^{1460}\\\\=30700(1.42747138525)\\\\=43823.3715272\approx43823.37$

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3 years ago