Express the radical using the imaginary unit, i. ± -81 =±

Answers

Answer 1

Answer:

+/- 9i

Step-by-step explanation:

+/- sqrt(-81) = +/- sqrt(-1) × sqrt(81)

= +/- 9i

Answer 2

Step-by-step explanation:

Step 1:  Find the radical

\(\pm\sqrt{-81}\)

\(\pm(\sqrt{-1} * \sqrt{81})\)

\(\pm i*9\)

\(\pm 9i\)

Answer:  \(\pm 9i\)


Related Questions

Which point is a solution to the system of linear equations?

y = −x + 3
2x − y = 6

A: (3, 0)
B: (3, −1)
C: (0, 3)
D: (−1, 3)

Answers

Using y=-x+3 and 2x-y=6 your solution would be (3,0)

ASAP PLEASE!!!!!!!!!!!!!!!!!!!!1

ASAP PLEASE!!!!!!!!!!!!!!!!!!!!1

Answers

Answer:

141 in²

Obviously don't write 141 in² because they've already wrote the in² part for you

3x x 5x = again dont answer just join among us FFSWVF

Answers

Answer:

15x to the power of 2

Step-by-step explanation:

3x × 5x = ?

Here we will do more than give you the solution to 3x × 5x. We will also explain and teach you how we came up with the answer, so you can understand it and solve similar problems in the future without help.

In this problem, 3 and 5 are the coefficients and two Xs are the variables. When a coefficient is next to a variable there is an invisible multiplication sign. So you could rewrite the problem as follows:

3 × x × 5 × x =

So now you can multiply what are the same. You can multiply the coefficients together and the x variables together as follows:

3 × 5 = 15

x × x = x2

Then you put the answers together and make the multiplication sign invisible again to get the following answer:

3x × 5x = 15x2

Hope this helps,have a great day!!!!!!!!!!!!!1111111

PLEASE HELP AND GRAPH I WILL GIVE BRAINLIEST!!!!! IMAGES ADDED

PLEASE HELP AND GRAPH I WILL GIVE BRAINLIEST!!!!! IMAGES ADDED

Answers

Qu2) Yes, the graph shows that x and v have a proportional relationship. This can be seen because the points lie on a straight line, which indicates that the ratio of x to v is constant. When the value of x increases by 2, the value of v also increases by 4, which means that x and v are directly proportional
PLEASE HELP AND GRAPH I WILL GIVE BRAINLIEST!!!!! IMAGES ADDED
ONLY DOING THIS SO THE GUY ONTOP CAN GET BRAINLIEST!!

Set up and solve a system of equations to solve the problem.

A jar contains n nickels and d dimes. There are 20 coins in the jar, and the total value of the coins is $1.50. How many nickels and how many dimes are in the jar?

The jar contains ___ nickels and ___ dimes.

Answers

Answer:

The jar contains 10 nickels and 10 dimes. Another answer is that the jar contains 4 nickels and 13 dimes.

Step-by-step explanation:

1 nickels = 5 cents

1 dime = 10 cents

1st answer

10 nickels = $0.50

10 dimes = $1.00

So 10 nickels + 10 dimes = $1.50

2nd answer

13 dimes = $1.30  

4 nickels = $0.20

So 13 dimes + 4 nickels = $1.50

10 nickels and 10 dimes

Zoe is 6 years old. Her brother, Langston is 3 years more than twice her age. Write a numerical expression for Langston´s age. can you solve it? give me a like if you solved it and pls friend request me.

Answers

Answer: x 2 + 3 = 15
6 * 2 + 3 which comes to = 15

Tell me everything I need to know and please work out the problems

Tell me everything I need to know and please work out the problems

Answers

Answer:

okay so the first one ull need to kno pemdas so start with the perenthesis (5^2-10) and then the exponent 2^3 and multyply thats by 5 and what ever answer u got in the perenthisis u divide by what u got with the second side of the problem

Step-by-step explanation:

if u need more help ill tutor u on it :)

Step-by-step explanation:

1. (5² - 10) ÷ 5 x 2³

= (25 - 10) ÷ 5 x 8

= 15 ÷ 5 x 8

= 3 x 8

= 24

2. a) 8.75 x 20 ( hrs )

= 175 a day

b) 175 x 5 ( 5 working days )

= 875 (in a week)

c) 875 x 8 ( 8 wks )

= 7,000

A grocery store paid $85 for 4 crates of milk. How much was one crate of milk?

Answers

Answer:

$21.25

Step-by-step explanation:

Divide 85 by 4

85/4 = 21.25

The exact answer is 21.25 but just use 21

Consider the standard form of an exponential function:

\(y=a(b)^x\)
How does changing the base number (inside the parentheses) change your graph?

Answers

Answer:

Step-by-step explanation:

Challenge 1

We have exponential decline if 0 b 1. As you move from left to right, the curve will get less steep.

If b is greater than 1, exponential growth is present, and the curve slopes upward from left to right.

Examples include exponential decline (y = 2(0.5)x) and exponential growth (y = 2(1.2)x).

Remember that b cannot be negative.

===========================================

Challenge 2

In the general template provided, enter x = 0.

y = a(b)^x

y = a(b)^0

y = a(1) (1)

y = a

When x = 0 is plugged in, the result is y = a.

The curve is therefore on the point (0,a). The y intercept appears here. It is the point when the curve veers off the y axis. The y intercept is altered if the value of "a" is altered.

Examples:

A 20 ounce box of cereal costs $3.20. A 12 ounce box of cereal costs $1.80. Which box of cereal is the better buy?
answer choices
A- 20 ounce box
B- 12 ounce box

Answers

B-12 ounce box because you can buy two of the 12 ounce boxes for $3.6. And you get more and it’s cheaper

subtract Mixed Numbers For 100 Points!

subtract Mixed Numbers For 100 Points!

Answers

Answer:

I think its b

Step-by-step explanation:

It is b your very very welcome

Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.



What is the mean number of minutes spent on the phone?

Some students recorded how many minutes they spent on the phone in one day. They put the results in a

Answers

Answer:   31

Explanation:

The data from the stem-and-leaf plot is:

10,

24,25,26,

30,30,32,33,

40,45,46

Add up those values

10+24+25+26+30+30+32+33+40+45+46 = 341

Then divide over n = 11 which is the sample size.

341/11 = 31 is the arithmetic mean.

Answer:

341/11 = 31 is the arithmetic mean.

Step-by-step explanation:

A pair of equations is shown below:

y = 7x − 8
y = 5x − 2

Part A: Explain how you will solve the pair of equations by substitution or elimination. Show all the steps and write the solution.

Part B: If the two equations are graphed, at what point will the lines representing the two equations intersect? Explain your answer

Answers

Answer:

Part A) If would probably be smart to use substitution because y is already solved for, so we can substitute the value of y as a function of x into the other equation.

y=7x-8

y=5x-2

7x-8=5x-2

   +8     +8

-----------------

7x=5x+6

-5x  -5x

----------------

2x=6

/2   /2

-----------

x=3

y=7x-8

y=21-8

y=13

Part B) The lines will intersect at point (3, 13)

Step-by-step explanation:

hope this helps

so sorry if this is wrong

did this for hw

Answer:

Step-by-step explanation:

part a:

substitution

7x - 8 = 5x - 2

2x - 8 = -2

2x = 6

x = 3

y = 7(3) - 8 = 21 - 8 = 13

y = 13

Part b.

(3, 13)

an alligator named Camila Arguello was 32 inches long in 2022, she was measured now in 2023, she is now 38 inches long, find the percent increase and percent CHANGE.

Answers

Answer:

Step-by-step explanation:

38-32=6

1%= 1/100    

32/100+ 38/100

changed by 6%

I’m stuck on this math problem

Im stuck on this math problem

Answers

Answer:

C.

Step-by-step explanation:

You can eliminate A and B because they square root graphs. You are left with C and D. C is the correct choice because the graph is being reflected across the x-axis, shown by the negative.

Alternatively you can graph each equation on a graphing calc and choose the best answer.

i need -4.18 - 3.234 written out

Answers

The answer is -7.414

Answer:

−7.414

Step-by-step explanation:

-4.18

-

-3.234

= -7.414

plzzhelpppppT^T tnk you!!

plzzhelpppppT^T tnk you!!

Answers

Answer:

? = 28

Step-by-step explanation:

24 x 3 = 72

72 - 100 = 28

Just subtract 100 by 27

Given the speeds of each runner below, determine who runs the fastest.
\text{Jake runs 8 feet per second.}
Jake runs 8 feet per second.
\text{Ron runs 175 feet in 14 seconds.}
Ron runs 175 feet in 14 seconds.
\text{Tony runs 1 mile in 545 seconds.}
Tony runs 1 mile in 545 seconds.
\text{Jessica runs 656 feet in 1 minute.}
Jessica runs 656 feet in 1 minute.

\text{Jake}Jake
\text{Ron}Ron
\text{Tony}Tony
\text{Jessica}Jessica

Answers

Answer:

honestly i don't know i'm not helpful but.....

Step-by-step explanation:

The Bluejays and the Sparrows are two baseball teams. Rajib recorded the number of hits per season the players scored in the past 5 years in two box-and-whisker plots. The number of hits per year scored by Bluejays players is the top plot, and the number of hits per year scored by Sparrows players is the bottom plot. Compare the interquartile ranges.

The Bluejays and the Sparrows are two baseball teams. Rajib recorded the number of hits per season the

Answers

Answer:

The answer is B

Step-by-step explanation:

The interquartile range of Bluejays is 40 and the interquartile range of Sparrows is 33. The correct option is B.

What is an interquartile range?

The interquartile range is a measurement of a data set's "middle fifty." A range is a measurement of where a set's beginning and end are located. To get the interquartile range, we must know the first and third quartiles. To find those, we need to know the median of the data.

Given that the Bluejays and the Sparrows are two baseball teams. Rajib recorded the number of hits per season the players scored in the past 5 years in two box-and-whisker plots. The number of hits per year scored by Bluejays players is the top plot, and the number of hits per year scored by Sparrow's players is the bottom plot.

The interquartile range of Bluejays is 40 and the interquartile range of Sparrows is 33.

To know more about the interquartile range follow

https://brainly.com/question/4102829

#SPJ2

A car salesperson earns a monthly salary of $800 per month plus $250 for each car sold. The equation y = 250x + 800 represents the total monthly salary. Graph the equation using the slope and y-intercept.

Answers

Answer:x - the total sales

800 + 0.02 x ≥ 1600

0.02 x ≥ 1600 - 800

0.02 x ≥ 800

x ≥ 800 : 0.02

x ≥ 40,000

The total sales must be at least $40,000.

The graph of the equation using the slope and y-intercept is shown in image.

What is Equation of line?

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

A car salesperson earns a monthly salary of $800 per month plus $250 for each car sold.

Here, The equation y = 250x + 800 represents the total monthly salary.

Hence, Slope is,

⇒ m = 250

And, Y - intercept = 800

Thus, The graph of the equation using the slope and y-intercept is shown in image.

Learn more about the equation of line visit:

https://brainly.com/question/18831322

#SPJ2

A car salesperson earns a monthly salary of $800 per month plus $250 for each car sold. The equation

Which list orders the numbers from least to greatest?

Negative 2.4, negative 1.5, negative 2 and one-fourth, negative 3, negative 1 and one-eighth

A number line going from negative 4 to positive 4.
Negative 1 and one-eighth, negative 1.5, negative 2 and one-fourth, negative 2.4, negative 3
Negative 3, negative 2.4, negative 2 and one-fourth, negative 1.5, negative 1 and one-eighth
Negative 3, negative 2 and one-fourth, negative 2.4, negative 1 and one-eighth, negative 1.5
Negative 1.5, negative 1 and one-eighth, negative 2.4, negative 2 and one-fourth, negative 3

Answers

Negative 3, negative 2.4, negative 1.5, negative 2 and one-fourth, negative 1 and one-eighth


Hope my answer helps you✌️

Negative 3, negative 2 and one-fourth, negative 2.4, negative 1 and one-eighth, negative 1.5 is the list that orders the numbers from least to greatest.

so i need to drag the tiles and get the answer :)

so i need to drag the tiles and get the answer :)

Answers

Answer:

\( - 2 \frac{3}{5} \div \frac{3}{5} = - \frac{13}{5} \times \frac{5}{3} = - \frac{13}{3} = - 4 \frac{1}{3} \)

\(2 \frac{1}{4} \div \frac{3}{4} = \frac{9}{4} \times \frac{4}{3} = 3\)

\( - \frac{10}{17} \div ( - \frac{15}{17} ) =\)

\( - \frac{10}{17} \times ( - \frac{17}{15} ) = \frac{2}{3} \)

\( 2.75 \div ( - 2.2) = \)

\( 2 \frac{3}{4} \div ( - 2 \frac{1}{5} ) = \)

\( \frac{11}{4} \div ( - \frac{11}{5} ) = \frac{11}{4} \times ( - \frac{5}{11} ) = - \frac{5}{4} = - 1.25\)

3 ⇒ 2 (1/4) / (3/4)

-1.25 ⇒ 2.75 / (-2.2)

2/3 ⇒ (-10/17) / (-15/17)

-4 1/3 ⇒ -2 (3/5) / (3/5)


Hope my answer helps you✌️

Mark BRAINLIEST

Select all ratios equivalent to 1:2 A. 10:20 B. 12:24 C. 8:16

Answers

Answer:

A, B, ad C

In order to find the ratio of something you must:

Add the parts of the ratio to find the total number of parts.

Find the value of each part of the ratio by dividing the number by the total number of parts calculated in step 1.

Multiply each part of the original ratio by the value of each part calculated in step 2.

I think A and c ( I think )

Tell whether the ratios form a proportion. 9/4, 2/3

Answers

Answer:

No ratios do not form a proportion.

Step-by-step explanation:

For example you take these fractions 9/4 and 2/?

9 - 2

4 - ?

Solve: 4×2÷9= about 0.9

0.9≠ 3

I need help, please quickly

I need help, please quickly

Answers

Answer: The ratio is 18:3

Step-by-step explanation:

Answer:  6 to 1

Step-by-step explanation:

A ratio refers to a fraction. In this case the question asks how many players to coaches there are.

The word "to" means that is where the fraction bar goes.

Players/Coaches

There are 18 players and 3 coaches.

18/3

18 can be divided by 3, 6 times so the fraction can be simplified to

6/1 meaning there are 6 players for every coach.

can calculate its volume in cub
Option 1:
Radius
2.5 inches
Volume:
Height =
6 inches

can calculate its volume in cubOption 1:Radius2.5 inchesVolume:Height =6 inches

Answers

Answer:

Answer: The volume of the apartment is 2,160 ft3.

Step-by-step explanation:

The volume of the apartment is 2,160^3

Pablo wishes to grow his baseball card collection to at least 3000 cards. He currently has 1200 cards and knows that his favorite type of cards have 15 cards per package.

Which inequality and solution represent the number of packages of cards that Pablo wishes to buy?

Select TWO that apply.

A
p+1200≥3000p≥1800

B
15p+1200≥3000p≥120

C
1200+15p≥3000p≥280

D
3000≤1200+15p120≤p

E
3000≤1200+15p120≥p

F
3000≤15p+1200280≤p

Answers

Answer:

B & E

Step-by-step explanation: They did it the right way it is supposed to be!

Brainiest would help! :D

Answer:

B and E are the 2

Step-by-step explanation:

Schoolcity 2021

Help with this problem

Help with this problem

Answers

Answer: D

Step-by-step explanation:

It would no longer become a function when an x-value repeats. You can tell just by comparing the x-values in the question to the x-values of the answers. This would therefore give you D as the x-value of 2 was in an order pair already.

Name three points that do not all lie in one of the planes shown in the diagram.
A. G, F, and /
B. E, F, and G
C. H, I, and J
D.P. M, and H

Answers

The answer is D.p.m & H
It’s D : P, M, and H

(0.36-0.13)/(2.61-1.92) (m/s2)

Srry, I don't really know how to explain this very well.

Answers

Answer:

0.333

Step-by-step explanation:

(0.36-0.13)/(2.61-1.92)

(0.23)/(0.69)

0.33333333333

Answer:

1. 0.23

2. 0.69

3. m ÷ (s x 2) or m/ the product of s and 2.

Step-by-step explanation:

I don't know the unknown numbers

Oh and 0.23 divided by 0.69 = 0.333 and many more 3's to come.

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