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3 years ago

2(i + 3) > 4(1 - i)

Mathematics

1 answer:

svetlana [45]3 years ago

5 0

$2(i+3)>4(1-i)$

Distribute 2 in (i+3) and 4 in (1-i)

$2i+6>4-4i$

Move -4i to another side and 6 to another side. When moving to another side, you'll have to change the sign/operator to opposite (Plus -> Minus, Multiply -> Divide)

$2i+4i>4-6\\6i>-2\\$

For this part, move 6 to divide -2.

$i>\frac{-2}{6} \\i>\frac{-1}{3}\\i>-\frac{1}{3}$

Whenever either a numerator or a denominator is in negative, we can pull out the negative in the middle of fraction.

Note that i is the symbol of imaginary number - as defined - i = √-1 But for this one, It's just a variable if I assume.

Thus, the answer is i > -1/3

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4 years ago

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3 years ago

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3 years ago

53- (-32) what is the answer?

shutvik [7]

Answer:

Step-by-step explanation:

Here is a tip: When you have something that looks like this - ( - , turn it into a plus sign. It looks kind of like a plus sign anyway. So if you have 53- (-32), turn it into 53 + 32. Does that make sense?

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Another tip to do it in your head, is to do 50 + 30 = 80, then do 3 + 2 = 5, and add them. It's easier than trying to juggle the odd numbers. :)

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3 years ago

2(i + 3) > 4(1 - i)​

2(i + 3) > 4(1 - i)