Explain why the square root of a number or variable can be either positive or negative.

Answers

Answer 1

Answer:

Well, the answer is: it depends on what was printed in the problem. The principal square root symbol never has a negative output, so if the test maker printed that symbol, it’s restrictions have to be respected: all square roots then are positive.

Step-by-step explanation:

a number y whose square (the result of multiplying the number by itself, or y ⋅ y) is x. For example, 4 and −4 are square roots of 16, because 4² = (−4)² = 16. Every nonnegative real number x has a unique nonnegative square root, called the principal square root, which is denoted by √(x), where the symbol √( ) is called the radical sign or radix.

Answer 2

Answer/Step-by-step explanation:

The square root could be positive or negative because multiplying two negative numbers gives a positive number. The principal square root is the nonnegative number that when multiplied by itself equals a. The square root obtained using a calculator is the principal square root.


Related Questions

PLEASE HELP FAST (ALL OF THEM PLESE)

Answers

1. En el carro, me pongo El cinturón de seguridad antes de encenderlo

2. En mi carro, tango de eluna placa de California con numeros y letras

3. Necesito llenar el tanque de gasolina de mi carro antes de manejar al trabajo

4. Uso la bocina en el volante cerca de las curvas


(I don’t speak Spanish all that well, but I am pretty positive these are correct)


3. Each beam of sunlight (a, b, or c above) delivers 1300 joules of energy per second (i.e. 1300 watts) overains
of the upper atmosphere, perpendicular to the direction of the beam (ie. the beam hits a flat surface. Sveta
sunlight spreads out when it hits the Earth, use your answers from 2 above to calculate the amount of enerosta
(c)
actually delivered per 100 m of surface in each of sunlight beams a, b, and c.

Answers

Answer:

i believe the answer is 13 ?

Step-by-step explanation:

1300 divided by 100 is 13 im not sure if this is right tho sry if im wrong.

answer this
help me with this question.​

Answers

Answer:

i cant read the handwriting

Step-by-step explanation:

como
Si al dinero que tengo le sumo el doble de lo que tengo y le resto $4000
equivale a $11000. ¿Cuántotengo?
ar
ca
O a. 6000
O b. 5000
O C. 2000
O d. 4000
x

Answers

Answer:

D

Step-by-step explanation:

My gut tells me D because I don't understand your language

A book of 20 stamps costs $10.20. What is the cost of one postage stamp? A stamp costs cents.

Answers

Answer:

1 stamp = $0.51

Step-by-step explanation:

20 stamps = $10.20

=> 1 stamp = 10.20/20

=> 1 stamp = $0.51

Hoped this helped.

x+3y=23
x-2y= -17
help elimationmethod

Answers

Answer:

1. 20

2.19

ok that will help you

How many pounds are in the truck total........!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!⇒

Answers

Answer:

1500-8000

Step-by-step explanation:

It depends what type of truck and what its carrying

On a coordinate plane,△FGH is formed with the vertices at point F(0,−2), point G(1,0) , and point H(2,−3) . Which expression can be used to determine the perimeter, in units, of△FGH ?

A
(0−1)2+(−2−0)2−−−−−−−−−−−−−−−−√+(1−2)2+(0−(−3))2−−−−−−−−−−−−−−−−−−√+(2−0)2+(−3−(−2))2−−−−−−−−−−−−−−−−−−−√

B
(0−(−2))2+(1−0)2−−−−−−−−−−−−−−−−−−√+(1−0)2+(2−(−3))2−−−−−−−−−−−−−−−−−−√+(2−(−3))2+(0−(−2))2−−−−−−−−−−−−−−−−−−−−−√

C
(0+1)2−(−2+0)2−−−−−−−−−−−−−−−−√−(1+2)2−(0+(−3))2−−−−−−−−−−−−−−−−−−√−(2+0)2−(−3+(−2))2−−−−−−−−−−−−−−−−−−−√

D
(0+(−2))2−(1+0)2−−−−−−−−−−−−−−−−−−√+(1+0)2−(2+(−3))2−−−−−−−−−−−−−−−−−−√+(2+(−3))2−(0+(−2))2−−−−−−−−−−−−−−−−−−−−−√

Answers

Answer:

the answer i think is B

Step-by-step explanation:

Answer: B

Step-by-step explanation:

f(1) = 4
f(x) = f(x-1) + 3
Find f(2)

Answers

f(2)= f(2-1)+3

f(2)=f(1)+3

Planes S and R both intersect plane T .

Horizontal plane T intersects vertical planes S and R. Planes T and S intersect at line x. Planes T and R intersect and line y. Horizontal line v intersects line x at point B and line y at point A. Line z intersects the lower half of plane S at point C. Point D is on line z but not on a plane.

Which statements are true based on the diagram? Select three options.

Plane S contains points B and E.
The line containing points A and B lies entirely in plane T.
Line v intersects lines x and y at the same point.
Line z intersects plane S at point C.
Planes R and T intersect at line y

Answers

Answer:

B,D,E

Step-by-step explanation:

Answer:

B- The line containing points A and B lies entirely in plane 

C-Line z intersects plane S at point C.

E-Planes R and T intersect at line y.

Step-by-step explanation:

Ed2022

Q(x)=-1/2x-3; q(x)=-4
Help

Answers

Answer:4

Step-by-step explanation:

the k the term is 1199/1200. What's k.​

Answers

Answer:

could I get a picture plz

pls I need an answer it's due tomorrow​

Answers

Answer:

1)

Factors of 25:    1, 5, 25

Factors or 75:    1, 3, 5, 15, 25, 75

Multiples of 25:    25, 50, 75

Multiples of 75:    75, 150, 225

2)

Factors of 35:    1, 5, 7, 35

Factors of 45:    1, 3, 5, 9, 15, 45

Multiples of 35:    35, 70, 105

Multiples of 45:    45, 90, 135

3)

The factors of 21:     1, 3, 7, 21

The factors of 56:      1, 2, 4, 7, 8, 14, 28, 56

Multiples of 21:    21, 42, 63

Multiples of 56:     56, 112, 168

4)

The factors of 54:     1, 2, 3, 6, 9, 18, 27, 54  

The factors of 72:      1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Multiples of 54:       54, 108, 162

Multiples of 72:        72, 144, 216

5)

The factors of 27:     1, 3, 9, 27

The factors of 36:     1, 2, 3, 4, 6, 9, 12, 18, 36

The multiples of 27:     27, 54, 81

The multiples of 36:     36, 72, 108

6)

The factors of 12:     1, 2, 3, 4, 6, 12

The factors of 16:     1, 2, 4, 8, 16

The multiples of 12:    12, 24, 36

The multiples of 16:     16, 32, 48

A line's y-intercept is –9, and its slope is 1/6 .What is its equation in slope-intercept form?

Answers

Answer:

y = 1/6x - 9

Step-by-step explanation:

The slope-form intercept formula is y = mx + b

Find the radius of the button.

A circular button with a diameter of 5 centimeters.

Answers

Answer:

r = 2.5 cm

Step-by-step explanation:

The radius is 1/2 of the diameter

r = 1/2 (d)

r = 1/2 (5)

r = 2.5 cm

what is 1 1/5 x 2 3/4

Answers

Exact Form:
33
10
33
10
Decimal Form:
3.3
3.3
Mixed Number Form:
3
3
10
I hope it help #carry on learning
Answer: 253/20

Step by step:

11(23)/5(4) (multiply 11 and 23)

253/5(4) (multiply 5 and 4)

=253/20

which is the largest ratio? 5/36, 2:9, 3 to 18, 1:3

Answers

→ 12 is largest here. Therefore, we can conclude that, → (12/36) = (1/3) = 1 : 3 is the largest ratio.

1 define and give an example for: rate:

2 define and give an example for unit rate
pls help I'm struggling​

Answers

Step-by-step explanation:

1. quantity, amount, or degree of something measured per unit of something else her typing rate was 80 words per minute. b : an amount of payment or charge based on another amount specifically : the amount of premium per unit of insurance.

2.A unit rate means a rate for one of something. We write this as a ratio with a denominator of one. For example, if you ran 70 yards in 10 seconds, you ran on average 7 yards in 1 second. Both of the ratios, 70 yards in 10 seconds and 7 yards in 1 second, are rates, but the 7 yards in 1 second is a unit rate

You make a scale drawing of a garden plot using the scale 2 in. 517 ft. If the length of a row of vegetables on the drawing is 3 in., how long is the actual row?
a. 17 ft b. 25.5 ft c. 34 ft d. 42.5 ft

Answers

The answer would be B- 25.5

5,8,6,9,7,10,8 what is the 20th term

Answers

Answer:

17

Step-by-step explanation:

the sequence is plus 3 minus 2. I forgot the actual formula for these kinds of questions but i vaguely remember

an = d (n - 1) + c

I was never able to remember how to use the formula but the sequence would be

5,8,6,9,7,10,8,11,9,12,10,13,11,14,12,15,13,16,14,17,15,18,16,19

if you'll notice, every other number is just one more than the last number...

so the 20th term is 17

Answer:

5,8,6,9,7,10,8,11,9,12,10,13,11,14,12,15,13,16,14,17...

20th term is 17

Step-by-step explanation:

add 3, subtract 2

help asap please needed

Answers

Answer:

it should be b

Step-by-step explanation:

if wrog please correct me also can u give me brainlist

Answer:

B

Step-by-step explanation:

63 should be your answer

Would appreciate Brainliest

solving systems of equations in three variables

Answers

Answer:

A: (x = 34, y = -27, z = -1)

Step-by-step explanation:

Plug the variables in. It might be tedious, but it guarantees you get it right.

Let's try A first. 2(34) + 2(-27) + 6(-1) = 8. Is this correct? Yes. However, you gotta plug it in for the other three equations. 5(34) + 6(-27) + 5(-1) = 3. Is this correct? Yes again. One last equation. 5(34) + 6(-27) + 3(-1) = 5. That's correct as well. The answer is A.

In case you still weren't sure if the answer was A or not;

B: 2(33) + 2(-26) + 6(0) = 14. Right away we can see that B will be incorrect.

C: 2(35) + 2(-28) + 6(-2) = 2. Again, incorrect.

D: 2(36) + 2(-29) + 6(1) = 20. Incorrect!

A is the correct answer.

3 candidates run for president of the club and 5 candidates run for vice-president. How many different possibilities for

filling the two positions are there?

b. 5

c. 8

d. 3

a. 15

Answers

5 I think… yes I think it’s 5.

Mary is 4 years older than her sister Dawn.

In total the sisters have a combined age of 32.
Form an equation to show this. How old is Mary?

Answers

Mary is 18 . I’m not sure about the equation part

2 1/4 divided by 3/4 i need it fast tho-

Answers

Answer:

3

Step-by-step explanation:

We have to divide 2 1/4 by 3/4

First convert 2 1/4 to an improper fraction

2 1/4 = (2*4 + 1)/4 = 9/4

Divide 9/4 by 3/4

(9/4)/(3/4)

The denominator of both the numerator and denominator are the same and can be canceled. This gives 9/3

Now cancel the common factor 3, which gives 3

The required value of 2 1/4 divided by 3/4 is 3

Answer:

Step-by-step explanation:

Use KCF method

Keep the first

Change division to multiplication

Flip the second

[tex]2\dfrac{1}{4}=\dfrac{9}{4}\\\\\[/tex]

9/4 ÷ 3/4

[tex]= \dfrac{9}{4}*\dfrac{4}{3}\\\\= 3[/tex]

Which of the following is not true about a square?

Answers

Answer:

All its sides are of equal lengths.

and

It has opposite parallel sides.

Step-by-step explanation:

1/7 rounded to the nearest thousand​

Answers

1/7 = 0.14285714
rounded to the nearest thousandth, it would be 0.143

approximate 79.75 to the nearest hundred, ten, whole number, thenth​

Answers

Answer: ten -  80(?)

hundred - 100

whole number - 80

tenth - 79.8

Write an equation in slope-intercept form for the line with slope 3 and y-intercept "-7." Then graph the line.

Answers

Answer:

The equation of a straight line is always [tex]y=mx+b[/tex], where m is a constant which is the slope and b is a constant which is the y-intercept.

Substitute these values in:

[tex]y=3x-7[/tex]

The graph would look like the image attached.

a. 17 + 6 10=17,6 b. 45 + 6 100 5 c. 3 + + 10 2 100 7 8 d. 6 + + 9 + 10 100 1 000 6 e. 11 + + 10 8 1 000 f. 84 + 1 3 + 100 10
Need help me​

Answers

Step-by-step explanation:

a. 17 + 6/10 = (17 x 10) / (1 x 10) + 6/10 = 170/10 + 6/10 = 176/10 = 17,6

b. 45 + 6/100 = (45 x 100) / (1 x 100) + 6/100 = 4 500/100 + 6/100 = 4 506/100 = 45,06

c. 3 + 5/10 + 2/100

= (3 x 100) / (1 x 100) + (5 x 10) / (10 x 10) + 2/100

= 300/100 + 50/100 + 2/100

= 352/100 = 3,52

d. 6 + 7/10 + 8/100 + 9/1 000

= (6 x 1 000) / (1 x 1 000) + (7 x 100) / (10 x 100) + (8 x 10) / (100 x 10) + 9/1 000

= 6 000/1 000 + 700/1 000 + 80/1 000 + 9/1 000

= 6 789/1 000 = 6,789

e. 11 + 6/10 + 8/1 000

= (11 x 1 000) / (1 x 1 000) + (6 x 100) / (10 x 100) + 8/1 000

= 11 000/1 000 + 600/1 000 + 8/1 000

= 11 608/1 000 = 11,608

f. 84 + 1/100 + 3/10

= (84 x 100) / (1 x 100) + 1/100 + (3 x 10) / (10 x 10)

= 8 400/100 + 1/100 + 30/100

= 8 431/100 = 84,31.

Hope this helps!!

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