2 years ago

19 What is the product of the complex number 2 +

Mathematics

1 answer:

hjlf2 years ago

3 0

Answer:

Step-by-step explanation:

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Step-by-step explanation:

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Which of the statements below is true for the following set of numbers 20,5,50,95,75,60

alina1380 [7]

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Step-by-step explanation:

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2 years ago

Solve the system of equations given below.<br> -5x = y – 5<br> -2y = -x-21

irakobra [83]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}-5x=y-5&\text{subtract y from both sides}\\-2y=-x-21&\text{add x to both sides}\end{array}\right\\\left\{\begin{array}{ccc}-5x-y=-5&\text{multiply both sides by (-2)}\\x-2y=-21\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x+2y=10\\x-2y=-21\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad11x=-11\qquad\text{divide both sides by 11}\\.\qquad x=-1\\\\\text{put the value of x to the first equation:}\\\\10(-1)+2y=10\\-10+2y=10\qquad\text{add 10 to both sides}\\2y=20\qquad\text{divide both sides by 2}\\y=10$

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