Subtract the complex numbers.

(5 + 4i) - (7 + 8i)

Answers

Answer 1

Answer:

Step-by-step explanation:

5 + 4i - 7 - 8i

-2 - 4i


Related Questions

In given figure AB is the diameter of circle. If ∠CAD = 32° and ∠CPB = 28°. Find ∠CDA.

Answers

Answer:

Therefore, the angle ∠CDA is 58°.

Step-by-step explanation:

∠CDA = 58°

In the given figure, let's consider the angle ∠CDA as x.

Since AB is the diameter of the circle, we know that the angle subtended by any diameter at any point on the circumference is always 90°. Therefore, ∠CAB = 90°.

In triangle CAD, the sum of angles is 180°. So, we have:

∠CAD + ∠CDA + ∠CAB = 180°

Substituting the known values:

32° + x + 90° = 180°

Combining like terms:

x + 122° = 180°

Subtracting 122° from both sides:

x = 180° - 122°

x = 58°

Consider this function.

f(x) = |x – 4| + 6

If the domain is restricted to the portion of the graph with a positive slope, how are the domain and range of the function and its inverse related?

Answers

If we restrict the domain of the function to the portion of the graph with a positive slope, the domain of the inverse function will be the range of the original function for values of x greater than 4, and its range will be all real numbers greater than or equal to 4.

The given function f(x) = |x – 4| + 6 is a piecewise function that contains an absolute value. The absolute value function has a V-shaped graph, and the slope of the graph changes at the point where the absolute value function changes sign. In this case, that point is x=4.

If we restrict the domain of f(x) to the portion of the graph with a positive slope, we are essentially considering the piece of the graph to the right of x=4. This means that x is greater than 4, or x>4.

The domain of the inverse function, f⁻¹(x), will be the range of the original function f(x) for values of x greater than 4. This is because the inverse function reflects the original function over the line y=x. So, if we restrict the domain of f(x) to values greater than 4, the reflected section of the graph will be the range of f⁻¹(x).

The range of f(x) is all real numbers greater than or equal to 6 because the absolute value function always produces a positive or zero value and when x is greater than or equal to 4, we add 6 to that value. The range of f⁻¹(x) will be all real numbers greater than or equal to 4, as this is the domain of the reflected section of the graph.

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Which of the following shows the image T of triangle ABC under the transformation (x,y)→(x−4,y+1)?

Answers

The required image T of triangle ABC under the transformation (x,y) → (x-4, y+1) is formed by connecting the vertices A'(a-4, b+1), B'(c-4, d+1), and C'(e-4, f+1)

To find the image T of triangle ABC under the transformation (x,y) → (x-4, y+1), apply this transformation to each of the vertices of triangle ABC and then connect the new vertices to form the image T.

Let's assume that the coordinates of the vertices of triangle ABC are A(a,b), B(c,d), and C(e,f).

To find the image of vertex A under the transformation, we substitute x = a and y = b into the transformation equation:

(x,y) → (x-4, y+1)

(a,b) → (a-4, b+1)

Therefore, the image of vertex A is A'(a-4, b+1).

Similarly, we can find the images of vertices B and C:

B'(c-4, d+1)

C'(e-4, f+1)

Therefore, the image T of triangle ABC under the transformation (x,y) → (x-4, y+1) is formed by connecting the vertices A'(a-4, b+1), B'(c-4, d+1), and C'(e-4, f+1)

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help with this please

help with this please

Answers

Answer:

8

Step-by-step explanation:

we conformed the 8s by 4 and 3

Can you elaborate on the reason why we look for pairs of numbers or variables when we simplify square root expressions?

Answers

We look for pairs of numbers in order to further simplify certain unsimplified square roots. For example, the square root of 20. From this, we pull out a 5 and two 2’s, Since there is a pair of 2’s, we carry one out, and since the 5 is not a pair, it stays inside of the radical. Therefore making it 2√5.

Dorothy organises a charity raffle she sells 800 tickets for £2 each 4% of the tickets win a prize it cost £20 65% of the profit goes to charity A and the rest goes to charity be how much of the money does Dorothy raise for charity day

Answers

By using Percentage , Profit distributed to Charity A is £ 624 and Charity B is £ 336

What is Percentage ?

A figure or ratio stated as a fraction of 100 is called a percentage. Although the abbreviations "pct.", "pct.", and occasionally "pc" are also used, the percent symbol, "%," is frequently used to indicate it. A % is a number without dimensions and without a standard measurement.

The Latin phrase "per centum," which meaning "by the hundred," was the source of the English word "percentage." Fractions having a denominator of 100 are called percentages. In other words, it is a relationship where the value of the entire is always assumed to be 100.

Finding the percentage of a whole in terms of 100 is what percentage calculation refers to. A percentage can be found in one of two ways:

use the unitary approach.by adjusting the fraction's denominator to 100.It should be noted that when the denominator is not a factor of 100, the second technique of percentage calculation is not applied. In these situations, we employ the unitary technique.

Total ticket sold = 800

Cost of each ticket is £ 2

Total fund raised (raw) = 2 * 800 = £1600

4% of the ticket won a prize of £20 each

so total number of tickets winning a prize = 4 % of 800 = 32

Total prize money distributed = 32 * 20 = £ 640

Total amount to distribute to charity = 1600 - 640 = £ 960

Total profit that goes to Charity A is = 65 % of 960 = £624

And rest to charity B is = £ 336

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Find the x intercepts. Show all possible solutions.

Find the x intercepts. Show all possible solutions.

Answers

For the function f(x) = 7/8x² - 14, the x-intercepts are x = -4 and x = 4.

What is a function?

In mathematics, a function is a unique arrangement of the inputs (also referred to as the domain) and their outputs (sometimes referred to as the codomain), where each input has exactly one output and the output can be linked to its input.

To find the x-intercepts of the function f(x), we need to solve the equation f(x) = 0.

f(x) = 7/8x² - 14

Substitute f(x) with 0 -

0 = 7/8x² - 14

Add 14 to both sides -

7/8x² = 14

Multiply both sides by 8/7 -

x² = 16

Take the square root of both sides -

x = ±4

Therefore, the x-intercepts of the function f(x) are x = -4 and x = 4.

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To prepare for his mountain biking trip, Rhyan bought four tire patches. Rhyan paid using a gift card that had $22.20 on it. After the sale, Rhyan’s gift card had $1.90 remaining.

Which equations could you use to find the price of one tire patch? Select all that apply.
4x – 1.9 = 22.2
4x – 22.2 = 1.9
4x + 1.9 = 22.2
4x + 22.2 = –1.9
22.2 – 4x = 1.9

Answers

Answer:

4x + 1.9 = 22.2

22.2 - 4x = 1.9

Step-by-step explanation:

Define the variable:

Let x be the cost of one tire patch (in dollars).

Given information:

Number of tire patches purchased = 4Total amount available to spend = $22.20Amount remaining after sale = $1.90

First equation

The cost of 4 tire patches and the amount remaining on the gift card equals the total amount on the gift card:

⇒ 4x + $1.90 = $22.20

⇒ 4x + 1.9 = 22.2

Second equation

The total amount on the gift card less the cost of 4 tire patches equals the amount remaining:

⇒ $22.20 - 4x = $1.90

⇒ 22.2 - 4x = 1.9

Answer:

4x + 1.9 = 22.2

22.2 - 4x = 1.9

Step-by-step explanation:

On Sunday, chara ran 6 more miles than he did on Saturday. If he ran m miles on Saturday, which expression represents how many miles chara ran on Sunday?
A. 6m
B. m + 6
C.6 - m
D. m - 6

Answers

Answer:

Is A supposed to be 6 x m or no??

Step-by-step explanation:

Explain why the graph below might be misleading.

Comparison of Funds Money Earned Fund A Fund B Fund C Fund D

a. The graph is not misleading.
b. The horizontal axis has intervals that are not comparable.
c. The bars are in different colors, so it skews the information,
d. The graph has no scale, so it's impossible to compare the money earned.​

Explain why the graph below might be misleading. Comparison of Funds Money Earned Fund A Fund B Fund

Answers

Answer:

d. The graph has no scale, so it's impossible to compare the money earned.​

Step-by-step explanation:

The graph is misleading because it has "no scale" in response to the money earned. It would actually be hard to plot them on the graph without the scale. If you look at the graph, you won't be able to compare how much funds Fund C made in comparison to Fund A, B and D. You won't be able to tell the actual gap in the money they've earned. The data above is not clearly illustrated in this case.

What is the measure of 23, in degrees, in the figure shown? 30° 137° 3​

What is the measure of 23, in degrees, in the figure shown? 30 137 3

Answers

Answer:

73°

Step-by-step explanation:

This equation uses two supplementary angles. Supplementary angles are two angles that add up to 180 degrees.

The triangle has two angles implied, 30 degrees and (180-137) degrees.

(180 - 137) = 43 degrees

Now that we have two angles inside the triangle, we subtract them from 180 to find the last angle.

180 - 43 - 30 = 107

The angle with a measure of 107 degrees and angle 3 are supplementary

180 - 107 = 73 degrees

Answer:73.4° Fahrenheit.

Step-by-step explanation:

Which is the solution to this system of equations?

Which is the solution to this system of equations?

Answers

Answer:

E empty set

Step-by-step explanation:

The answer is empty at

Solve the following equation by first writing the equation in the form ax² = c
²-49-0
a.
b.
C.
d.
-49
- 149
= 7
:= ±7

Answers

The solution to the given equation is x = ±7. The correct option is d. x = ±7

Solving quadratic equations

From the question, we are to determine the solution to the given equation

The given equation is

x²-49 = 0

NOTE: I assumed the variable is x

Solving the equation

x²-49 = 0

Writing in the form ax²= c

x² = 49

∴ x = ±√49

x = ±7

Hence, the solution to the given equation is x = ±7

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What is the difference between a copyright and a trademark, and how are they used to protect intellectual property?

Answers

Answer: Copyright protects original work, whereas a trademark protects items that distinguish or identify a particular business from another.

The trademark laws protect the product or service name and any slogans used in the advertising, while the copyright laws protect the additional creative written expression contained in the ad. Hope this helps!

Step-by-step explanation:

help one question! but pls show work

help one question! but pls show work

Answers

Answer:

5

Step-by-step explanation:

cant show work i need to draw then

Answer:

-28k^4

Step-by-step explanation:

Select the correct answer from each drop-down menu.

The total area of the three triangles is
square units.
The area of the figure is
square units.

Answers

The total area of the three triangles is square units is 36 and the area of the figure is square units is 60.

What is the triangle?

The triangle can be defined as a three-sided polygon in geometry, and it consists of three vertices and three edges. The sum of all the angles inside the triangle is 180°.

From the figure, the area of triangles can be calculated using the:

Area = (1/2)height×base length

Area of three triangle = 1/2(4×6) + 1/2(6×4) + 1/2(4×6)

Area of three triangle = 1/2(24×3) = 36 square units

Area of the figure = area of three triangle + area of the rectangle

= 36 + 6×4

= 60 square units

Thus, the total area of the three triangles is square units is 36 and the area of the figure is square units is 60.

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Select the correct answer from each drop-down menu.The total area of the three triangles is square units.The

Stefan sells Jin a bicycle for ​$176 and a helmet for ​$16. The total cost for Jin is ​160% of what Stefan spent originally to buy the bike and helmet. How much did Stefan spend​ originally? How much money did he make by selling the bicycle and helmet to​ Jin?

Answers

Answer:

Stefan originally paid $120 for the bicycle and helmet.

He made $72 by selling them to Jin.

Step-by-step explanation:

Given that:

Selling price of bicycle = $176

Selling price of helmet = $16

Total price = 176+16 = $192

This is 160% of what Stefan paid originally.

Let,

x be the original amount paid by Stefan.

160% of x = 192

\(\frac{160}{100}x=192\\1.6x=192\)

Dividing both sides by 1.6

\(\frac{1.6x}{1.6}=\frac{192}{1.6}\\x=120\)

Original amount paid by Stefan = $120

Profit = 192 - 120 = $72

Hence

Stefan originally paid $120 for the bicycle and helmet.

He made $72 by selling them to Jin.

) 65 people were asked on the activities they engage in during their free time. The results showed that 23 visit national parks, 26 engage in cycling while 22 engage in swimming. Furthermore 9 engage in swimming and visit national parks, 9 engage in swimming only while 11 visit national parks only. How many engage in
i. Swimming and cycling

Answers

Answer:

Step-by-step explanation:

i am working on the assumption that nobody does all three of them

i got 4 because including the people that do swimming and park, the total number of people that do swimming is 22.

the same logic goes for cycling: including the people that do swimming and visit the national park, the total is 23.

so that means that find how many people do swimming and cycling, we have to add the people doing only swimming, with the people doing both swimming and park and then subtract that answer from 22 which gives you 4

) 65 people were asked on the activities they engage in during their free time. The results showed that

The price listed for 4 dinner plates at a home store is $23.88. What amount will Jane need to pay, if she decides to purchase 10 such dinner plates?

Answers

If you want to answer this, then you’ll first have to figure out how much money the one plate costs. So you would divide $23.88 by 4 and the number you get is how much they paid for one plate.

Next you would have to take the number you get from the division problem and multiply that by 10. That will give you your answer for how much she will need to pay.

Work:
$23.88 / 4 = 5.97
5.97 x 10 = 59.70

She needs to pay $59.70 for the plates.

April and Blake went running. Blake

ran 4 miles farther than April. Added

together, they ran a total of 16 miles.

How far did April run?

X = April's distance

4 + x = Blake's distance

Answers

Answer:

6 miles

Step-by-step explanation:

From the information given you can write the following equation:

x+y= 16 (1), where

x= April's distance

y= Blake's distance

You also have that Blake ran 4 miles farther than April which means that y= 4+x and you can replace this in the first equation and isolate x:

x+(4+x)= 16

x+4+x=16

2x=16-4

x=12/2

x= 6

According to this, the answer is that April ran 6 miles.

Apply 2-point rubric
1. Sandy earns $9.00 per hour working at a department store. If she works
for 6 2/5 hours, how much money will Sandy earn? Show your work.

Answers

55.08
6x9.00 an hour gives 54 then you find how much time 2/5 of an hour is 12 mins then all you do is multiply 9.00x6.12= 55.08

4(x-3)= -2(6-2x) solve equation

Answers

Answer:

( − ∞ , ∞ )

Step-by-step explanation:

Any value of  x  makes the equation true.

Which runner set the fastest pace? Explain.
Time

Martha 20 laps 32 min
Allison 16 laps 25 min
Rachel 17 laps 27.2 min

Answers

Allison runner is setting faster pace than Martha and Rachel

What is speed?

Speed of any object is defined as the distance traveled by the object with respect to time is known as speed.

Here, we can consider distance as laps.

According to given data in question:

Speed of Martha = 20 laps/ 32 min

⇒ 0.625

Speed of Allison = 16 laps/25 min

⇒ 0.64

And speed of Rachel = 17 laps/ 27.2 min

⇒ 0.625

Thus, according to above calculation Allison (runner) is taking faster pace.

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8. Write an equation to solve for X.
30°
2
2x
Write an equation to solve for x

8. Write an equation to solve for X.3022x Write an equation to solve for x

Answers

30+90+2x=180
2x=60
x=30

Answer:

2x= 30+90

Step-by-step explanation:

To check

2x= 120

2x/2=120/2

x=60

Joey earned $10 of every car he washed. If he earned $190 how many cars did he wash?

Answers

Answer:

19

Step-by-step explanation:

190/10= 19

Answer:

19  19*10=190

Step-by-step explanation:

MARK AS BRAINLIST! Estimate the sum of 3.62 + 1.16 = ________ by rounding each addend to the nearest tenth.
A.4
B.4.8
C.5
D.5.8

Answers

B would be the estimate I‘m pretty sure.

The required value of the given sum is given as 4.8. Option B is correct.

Given that,
To estimate the sum of 3.62 + 1.16 by rounding each addend to the nearest tenth.

What is arithmetic?

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,

What is rounding of values?

The rounding of values is superseding a number with an inexact value that has a more ephemeral, more uncomplicated, or more direct representation.

Here,
Given expression,
= 3.62 + 1.16
Round the values to the nearest tenth,
= 3.6 + 1.2
= 4.8

Thus, the required value of the given sum is given as 4.8. Option B is correct.

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This is worth half of my grade

This is worth half of my grade

Answers

Answer:

\(y = 8 - 8\sin(2x) \)

A lender requires a minimum down payment of 16% of the value of the home. You have $39,000
cash available to use as a down payment toward a home. Determine the maximum home value
that you can finance.

Answers

There is a $243,570 cap on the amount you may finance.

Which type of arithmetic is used in finance?

MentaI arithmetic, aIso known as "quick math," aIgebra, trigonometry, statistics, and probabiIity are some of the key mathematicaI concepts and abiIities needed in the financiaI sector. A fundamentaI knowIedge of these abiIities shouId be sufficient to quaIify you for the majority of finance occupations.

The highest home vaIue that may be financed is x.

$39,000 in avaiIabIe cash for a down payment

16% is the needed down payment percentage.

16% of the home's worth can be expressed as,

x × 16/100=$39,000

x=39,000/0.16

x=$243,570

We can then infer that the highest vaIue you couId finance is $243,570.

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how can you tell if a quotient is less than 1'.

Answers

Answer:

Step-by-step explanation:

Okay so when a smaller number is divided by a larger number, the quotient is less than 1.  Hope this helps Bye sisters slay.

What system of equations is shown on the graph below?

On a coordinate plane, 2 lines intersect around (1.8, negative 0.8).

2 x + y = 3 and 3 x minus 4 y = 8
2 x minus y = 3 and 3 x + 4 y = 8
2 x + y = 3 and 3 x minus 4 y = 2
2 x minus y = 3 and 3 x minus 4 y = negative 2

Answers

Answer:

i thnk it is c correct me if i am rong

Step-by-step explanation:

Answer:

(C) I got it right

Step-by-step explanation:

on edge

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