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Nadya [2.5K]
3 years ago
12

Is 2i a real or complex root?

Mathematics
1 answer:
Maurinko [17]3 years ago
3 0

By definition, i = sqrt(-1) because it is used to solve the equation x^2+1 = 0 or x^2 = -1, which has no real number solutions.

Since i is imaginary or complex, then so is 2i

You can express it as 2i = 0+2i to be in the form a+bi with a = 0 as the real part and b = 2 as the imaginary component.

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2.
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Answer:

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7 0
2 years ago
An 8-oz bottle of ketchup costs $1.39.
inna [77]
First, you need to find how much an ounce costs. To do that, you have to divide 1.39 by 8. Then you get about 0.17. Now, you multiply 0.17 by 14, and get the answer of 2.38. Therefore, a 14-oz bottle of ketchup costs $2.38.
6 0
4 years ago
Read 2 more answers
NEED HELP FAST!!!
faust18 [17]

In order to solve the formula

C=\pi d

in terms of d, you simply have to divide both sides by pi:

d=\dfrac{C}{\pi}

The total height of the earring is the sum of the diameters of the circles. Given their circumferences, the diameters are

d_1=\dfrac{6}{\pi},\quad d_2=\dfrac{8}{\pi}

So, the total height is

h=d_1+d_2=\dfrac{6}{\pi}+\dfrac{8}{\pi}=\dfrac{14}{\pi}

6 0
3 years ago
Cathy rolls a number cube that is labeled from 1 to 6.
MatroZZZ [7]

Answer: 2/3

Cathy rolls a number cube that is labeled from 1 to 6.

Total outcomes = {1,2,3,4,5,6}

she rolls an even number or a multiple of 3

Outcomes of an even number = {2,4,6}

Outcomes of multiple of 3 = {3,6}

so favorable outcomes of even number or a multiple of 3 = {2,3,4,6}

Probability ( any event) =number of favorable outcomes divide by total  number of outcomes

probability(even number or a multiple of 3) = \frac{4}{6}=\frac{2}{3}

7 0
3 years ago
Helppppp pleaseeee!!!!
Airida [17]
It’s -2 for the first box and then 3
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2 years ago
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