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
Vsevolod [243]
3 years ago
13

What is the square root of -9

Mathematics
1 answer:
Maksim231197 [3]3 years ago
4 0
You actually can’t get the exact square root of a negative number, it is not 3 as 3 squared is 9 not negative 9. It is not possible to square a number to get a negative answer, that’s where all the “i” stuff comes in with irrational numbers.
You might be interested in
In Problems 1-8, determine the level of measurement of each variable.
lbvjy [14]

The level of measurement of each given variable are:

1. Ordinal

2. Nominal

3. Ratio

4. Interval

5. Ordinal

6. Nominal

7. Ratio

8. Interval

Level of measurement is used in assigning measurement to variables depending on their attributes.

There are basically four (4) levels of measurement (see image in the attachment):

1. <u>Nominal:</u> Here, values are assigned to variables just for naming and identification sake. It is also used for categorization.

  • Examples of variables that fall under the measurement are: Favorite movie, Eye Color.

<u>2. Ordinal:</u> This level of measurement show difference between variables and the direction of the difference. In order words, it shows magnitude or rank among variables.

  • Examples of such variables that fall under this are: highest degree conferred, birth order among siblings in a family.

<u>3. Interval Scale:</u> this third level of measurement shows magnitude, a known equal difference between variables can be ascertain. However, this type of measurement has <em>no true zero</em> point.

  • Examples of the variables that fall here include: Monthly temperatures, year of birth of college students

4. Ratio Scale: This scale of measurement has a "true zero". It also has every property of the interval scale.

  • Examples are: ages of children, volume of water used.

Therefore, the level of measurement of each given variable are:

1. Ordinal

2. Nominal

3. Ratio

4. Interval

5. Ordinal

6. Nominal

7. Ratio

8. Interval

Learn more about level of measurement here:

brainly.com/question/20816026

3 0
3 years ago
The graph of y=f(x) is shown on the grid​
Ket [755]

Answer:

can't be seen

Step-by-step explanation:

try again by asking a new question

6 0
3 years ago
A rock weighs 80 g on a triple beam scale. The same rock is then gently placed inside a graduated cylinder containing 30 mL of w
Alexxandr [17]

Answer:

  • 1.78 g/cm³

Step-by-step explanation:

<u>80 g rock displaces water:</u>

  • 75 ml - 30 ml = 45 ml = 45 cm³

<u>Density = mass / volume:</u>

  • d = 80 g / 45 cm³
  • d = 1.78 g/cm³ (rounded)
3 0
3 years ago
NEED HELP
Reptile [31]

Answer:

B I'm pretty sure

Step-by-step explanation:

6 0
3 years ago
Horizontal and parallel lines e and f are cut by transversal b. At the intersection of lines b and e, the uppercase right angle
spayn [35]

Answer:

130

Step-by-step explanation:

From the FIQURE of the question, we can see that line "e" is parallel to line "f" then we can say (2x + 18)=( 4x - 14)

Then we can collect like terms

2x-4x= -14-18

-2x=-32

The negatives cancelled out we have

x = 16

From the question, At the intersection of lines b and f, the top right angle is (4 x minus 14) degrees

Angle on a straight line is 180° then we can calculate "y" as

y = 180 - (4x - 14)

= 180-4x+14

= 180+14-4x

But x= 16, then substitute we have

= 180 +14 - 14(16)

= 130

Hence, the value of y is 130

CHECK THE ATTACHMENT FOR THE FIQURE

5 0
3 years ago
Other questions:
  • Which of the following has the lowest unit price?
    11·1 answer
  • 2. If the measure of angle 1 is 38 degrees, what is the measure of angle 2?
    12·1 answer
  • Evaluate the expression when k=-4<br> |k-2 • |3k|,- 1<br> a. 72<br> b. 71<br> c. 66<br> d. -73
    7·2 answers
  • Find the greatest common factor of 15 and 5
    8·1 answer
  • A crate filled with bottles weight 4kg.The bottles weight 2.3kg what is the weight of the empty crate
    13·1 answer
  • Which two-dimensional net does not represent a three-dimensional rectangular prism?
    7·2 answers
  • What is the approximate percent decrease from 1,865 to 1,240?
    11·2 answers
  • 4x+3−2x=15<br> what is x?
    10·2 answers
  • Add -73 + 28.<br> 0-91<br> 0-55<br> 0-45
    6·1 answer
  • SOLVE ASAP PLS I NEED FOR GRADING
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!