From the de Moivre's we have,
<span>
(cosθ+isinθ)^n=cos(nθ)+isin(nθ)
</span><span>
Therefore,
</span><span>
R((cosθ+isinθ)^5)=cos(5θ)I((cosθ+isinθ)^5)=sin(5θ)
</span><span>
Simplifying,
</span><span>
cos^5(θ)−10(sin^2(θ))(cos^3(θ))+5(sin^4(θ))(cosθ)=cos(5θ) </span><span>
</span>
The correct answer is the first one(a): To get the system B,..., the first equation multiplied by 4...
Explanation:
1. Let us first multiple the first equation in System A with 4, we would get:
4(2x - y) = 4 * 3
=> 8x - 4y = 12 --- (A)
Now add the equation (A) and the second equation of System A:
8x - 4y = 12
3x + 4y = 10
------------------
11x = 22
Hence,
System B:
2x - y = 3
11x = 22
-i
"Review your credit report to make sure there are no unauthorized open accounts" action one can take to determine whether his or her identity has been stolen.
<u>Answer: </u>Option D
<u>Explanation:</u>
Fraudsters can use personal details to rob your bank account or run credit card bills, get insurance medical treatment or get a driver's license on your behalf. Anyone with a Social Security number is a possible victim of identity theft. Specialists believe that early identity theft awareness will considerably reduce the harm caused by theft.
The warning signs involve: a strange charge on your credit card bill, credit score is going up or down, a new account one didn’t open on their credit card, Inaccurate medical records etc. The actions which are needed to take immediately to check whether one got victimized or not are: Check your credit card statements and bank account, Run a credit report and Monitor your finances closely.
Answer:
the answer to the first one would be: 4/3
the second problem's answer: 20/36, which can be reduced to 5/9
Answer:
3a
Step-by-step explanation:
