1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
xz_007 [3.2K]
3 years ago
13

What types of numbers are undefined when they are under a radical sign? If you were dealing with the number √-1, would it be def

ined if you multiplied it by 2? Would it be defined if you subtracted some real number from it? Would it be defined if you squared it? Would it be defined if you cubed it?
Mathematics
1 answer:
Misha Larkins [42]3 years ago
8 0
The square root of a a negative integer is imaginary.
It would still be a negative under a square root if you multiplied it by 2, therefor it will still be imaginary, or I’m assuming as your book calls it, undefined.
2•(sqrt-1) = 2sqrt-1

If you add a number to -1 itself, specifically 1 or greater it will become a positive number or 0 assuming you just add 1. In that case it would be defined.
-1 + 1 = 0
-1 + 2 = 1

If you add a number to the entire thing “sqrt-1” it will not be defined.
(sqrt-1) + 1 = 1+ (sqrt-1)

If you subtract a number it will still have a negative under a square root, meaning it would be undefined.
(sqrt-1) + 1 = 1 + (sqrt-1)

however if you subtract a negative number from -1 itself, you end up getting a positive number or zero. (Subtracting a negative number is adding because the negative signs cancel out).
-1 - -1 = 0
-1 - -2 = 1

If you squared it you would get -1, which is defined
sqrt-1 • sqrt-1 = -1

and if you cubed it, you would get a negative under a square root again, therefor it would be undefined.
sqrt-1 • sqrt-1 • sqrt-1 = -1 • sqrt-1 = -1(sqrt-1)

Sorry if this answer is confusing, I don’t have a scientific keyboard, I’ll get one soon.
You might be interested in
What is 164times378 help!
exis [7]
It is 61,992 because, well you multiply it together
5 0
3 years ago
Read 2 more answers
If the discriminat of a quadratic equation is 4 which statement describes the roots
Alex Ar [27]

Answer: using the discriminant to find the number of solutions to a quadratic equation b^2-4ac. positive discriminant indicates that the quadratic has <u>two distinct real number solutions.</u> The roots of a function are the x-intercepts. By definition, the y-coordinate of points lying on the x-axis is zero. Therefore, to find the roots of a quadratic function, we set f (x) = 0, and solve the equation, ax2 + bx + c = 0.

Step-by-step explanation:

can i have the answer choices

4 0
3 years ago
Solve the inequality 2x-7&gt;3
Licemer1 [7]

Answer:

x>5

Step-by-step explanation:

2x - 7 > 3

Add 7 to both sides

2x - 7 +7 > 3+7

2x > 10

Divide both sides by 2

2x/2 > 10/2

x > 5

I hope this was helpful, please mark as brainliest

4 0
3 years ago
Read 2 more answers
What is the slope of 2y=5x+7
AleksAgata [21]

Answer:

5/2

Step-by-step explanation:

Shown in picture above.

7 0
3 years ago
Zoe is doing a survey to find the time her classmates spend playing video games. She asks the following question:
Vladimir [108]
The data she would collect would be grouping people depending on how much video games they played. 

This however, is not a statistical question. Instead, she should set for example: 1-3 hrs per week, 4-6 hrs, etc. People play different amounts of hours, and so you cannot set a specific number, it must be a "range-of-numbers".

Also the question itself is kinda judging and comparative

so overall, umm... this question isn't really good

hope this helps :D
7 0
3 years ago
Read 2 more answers
Other questions:
  • Choose the correct description of the graph of the compound inequality: x − 2 &gt; −3 and 3x less than or equal to 12
    15·1 answer
  • What is 134,500 rounded to the nearest ten thousand
    12·2 answers
  • Maridel wants to find out how many of her classmates plan to come to the next football game. There are 800 students in her schoo
    12·2 answers
  • Paula kitten weighs 3 1/2 pounds write this weight using pounds and ounces explain how you found your answer
    15·1 answer
  • Y'all help me out a sec please!
    8·1 answer
  • An auto parts store is examining how many items were purchased per transaction at the store as compared to their online website.
    11·1 answer
  • The business college computing center wants to determine the proportion of business students who have laptop computers. If the p
    15·1 answer
  • Christina and her 2 friends spent $25.02 at there favorite restaraunt. If they split the cost equally about how much will they e
    14·1 answer
  • Https://brainly.com/question/22438984 //help ASAP PLEASE
    8·2 answers
  • Find the values of m and c if the straight line y=mx+c passes through the point (-2,5) and has a gradient of 4.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!