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amid [387]
3 years ago
13

What is the square root of -1? -i i -1 1

Mathematics
1 answer:
Oksanka [162]3 years ago
4 0

Answer:

the square root of -1 is i

Step-by-step explanation:

Well, actually, the square root of -1 (or any negative number at that) is not a real number. What I mean by that is that there is no way to square a real number to get a negative number (ie 2^{2} = 4, -2^{2} =4, there is no way to square a real number to get -4).

To solve this, mathematicians came up with the "imaginary number" i which, when squared, equals to -1. This allows us to get the square root of negative numbers (\sqrt{-4} = 2i) or get negative numbers through squaring (2i^{2} = -4).

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Write a system of equations to describe the situation below, solve using substitution, and fill
BlackZzzverrR [31]

Answer:

Revenue and Expense = $230

No. of attendees: 10

Step-by-step explanation:

Let n be the no. of attendees

Expense = 50 + 18n

Revenue = 23n

Break even when:

50 + 18n = 23n

50 = 5n

n = 10

23n = 230

5 0
4 years ago
Image down below plz help
aleksley [76]

Answer:

12 boys and 18 girls

Step-by-step explanation:

the ratio from boys to girls is 2 to 3

12/2=6

18/3=6

both equal 6 meaning that both are proportional meaning that A is the correct answer  

4 0
3 years ago
Read 2 more answers
Please solve and show working for 13-((4/5)+(6/8))=
UNO [17]
<span>13-((4/5)+(6/8))
Make your fractions have common denominators 
</span>13-((32/40)+(30/40))
Add your fractions and simplify
13-(62/40)
or
13-(31/20)
or
13-(1 11/20)
Then turn 13 into a fraction with a common denominator! Im going to use the second fraction method (31/20)
13 written as a fraction is 13/1, its LCD with 31/20 is 20. I now multiply the top and bottom by 20
260/20
Now I rewrite the problem again
(260/20)-(31/20)
Which equals
229/20!
This is your unsimplified answer
Finally you simplify and get
11 9/20

6 0
4 years ago
Given g(x) = 2x + 1, solve for a when g(x) = 7.
Over [174]
You would evaluate by plugging in the given number of 7 to get your answer.

7 0
3 years ago
Name the property of equality that justifies the statement: if p=q, then q=p
Ostrovityanka [42]

Answer : - Symmetric property of equality tells that for all real numbers p and q, if p=q then q=p which means if we interchange the sides of an equation then the equation is still a true statement .

For example :-

1. We know that 4+5 =9 then by symmetric property we can also say that 9=4+5.

2. If 5x+5=7 then by symmetric property of inequality 7=5x+5.

4 0
3 years ago
Read 2 more answers
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