L 2. (a) Which term of the arithmetic progression 8 - 6i, 7 – 4i, 6 — 2i, ... is purely imaginary [3]​

Answers

Answer 1

Answer:

10i

Step-by-step explanation:

8-7=1

7-6=1

The real part of the complex numbers is following an arithmetic progression with first term 8 and common difference 1.

………………………………………

-6+2=-4

-4+2=-2

THe Imaginary part of the complex numbers is following an arithmetic progression with first term -6 and common difference 2.

………………………………………

Then the term she of the sequence can be written:

(8 - n) + i(-6 + 2n)

………………………………………

We get a purely imaginary term when its real part is nul :

⇒ 8 - n = 0

⇒ 8 = n

………………………………………

If we take n = 8

⇒ -6 + 2n = -6 + 2×8 = -6 + 16 = 10

Therefore,

The term of the arithmetic progression 8 - 6i, 7 – 4i, 6 — 2i, ... which is purely imaginary is :

10i


Related Questions

Find the area of the circle. Use 3.14 for the value of x Round your answer to the nearest tenth. Don’t forget to find the radius first before finding the area.

81.7 in
98.5 in
16 in
326.8 in

Answers

Answer:

r = d/2

r = 10.2/2 = 5.1

Area = pi * r^2

Area = 3.14 * 5.1^2

Area = 81.67 in^2

To the nearest 1/10, this is 81.7 in^2

Help me on this ,appreciate it.

Answers

Answer:

I would say that the travling time is 3.5 hours and the Stationary time would be 2.5 hours.

Step-by-step explanation:

I'm sorry if I'm worng, (Can I get brainliest??)

Find y=f(x) if f '(x)=6x-2, f'0)=3, f(0)=7.
=

Answers

Answer:

f(7)=40

f(3)=16

Step-by-step explanation:

f(0)=6(7)-2

y=42-2

y=40

f(0)=6(3)-2

y=18-2

y=16

What is the distance between parallel lines y=x+3 and y=x+1, rounded to the nearest hundredth?\

Answers

The distance between two parallel lines  y=x+3 and y=x+1 will be equal to

[tex]d=\dfrac{1}{\sqrt{2}}[/tex]

What is parallel lines?

The lines which do not intersect to each other and only intersect at infinity are called parallel lines.

Here we have two lines:-

y=x+3

y=x+1

The formula for the distance between two parallel lines is given by:-

[tex]d=\dfrac{|C_1-C_2|}{\sqrt{a^2+b^2}}[/tex]

We have C1=3 C2=1 a=1 b=1 by putting the value in the formula we will get:-

[tex]d=\dfrac{3-2}{\sqrt{1^2+1^2}}=\dfrac{1}{\sqrt{2}}[/tex]

Hence distance between two parallel lines  y=x+3 and y=x+1 will be equal to  [tex]d=\dfrac{1}{\sqrt{2}}[/tex]

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pls hep me look at the photo

Answers

Answer:

B

Step-by-step explanation:

It matches 3 of the 4 rows.

I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Answers

Answer:226
Step-by-step explanation:
Surface area =S
To find the surface area we have to apply formula :S=(2×Base Area) +(base prism×height)
Where, base area=11cm
Base prism=8.5cm, Hight =24cm to solve(2×11cm)+(8.5cm×24cm)=226cm

Can someone help me with this?

Answers

Answer:

[tex]\huge\purple{ x^2 +(y+2)^2 = 4}[/tex]

Step-by-step explanation:

Circle is centred at (0, -2)

-> h = 0 & k = - 2

radius of the circle (r) = y-coordinate of the center = - 2

Equation of circle in standard form is given as:

[tex](x-h)^2 +(y-k)^2 = r^2[/tex]

Plugging the values of h, k and r in the above equation, we find:

[tex](x-0)^2 +[y-(-2)]^2 = (-2)^2[/tex]

[tex]\implies\huge\orange{ x^2 +(y+2)^2 = 4}[/tex]

This is the required equation of circle.

Find 1/7 of 14. A.3 B.5 C.6 D.2

Answers

Answer:

So we just multiply the two numbers together and we get [tex]\frac{14}{7}[/tex] and if we simplify this even more we just get down to 2 which is our final answer.  That would best match with Option D, 2

Hope this helps!  Let me know if you have any questions

Answer:

2 the answer is and always will be 2

Step-by-step explanation:

just know it

An elevator goes up in a multi storey building at the rate of 6 m/min. If it starts from 20 m below the ground level, how long will it take to reach 320 m ? ​

Answers

Answer:

56 minute 40 seconds

Explanation:

unit rate: 6 meters per minute

The elevator starts from 20 m below ground level.

So, in total have to cover distance = 20 + 320 = 340 meter

Time taken = distance/speed

                   = 340/6

                   = 56.67 minute

                   ≈ 56 minute 40 seconds

A 4-Pack of coffee drinks is $6.90.what is the cost per bottle.

Answers

Answer:

$ 1.725

Step-by-step explanation:

4 Pack of coffee = $ 6.90

1 Pack of coffee = $ 6.90 / 4 = $ 1.725

( The word per means " 1 " )

Answer:

$1.73

Step-by-step explanation:

To get the price of one bottle, set up a proportion.

let x = the price of one bottle

the numerator will be the price of the bottles and the denominator will be the number of bottles.

6.90 / 4  = x / 1

cross multiply: 6.90 = 4x

solve for x by dividing by 4 on both sides

6.90/4 = 4x / 4

x = 1.725, round up to $1.73

This pattern follows the rule add 7, then subtract 3. What are the next two numbers?

19, 23, 27, ________, ________

Group of answer choices

31, 35

31, 38

34, 35

Answers

31 and 35.

Sure hope this helps you

Name the
solid figure

Answers

Answer:

That is a rectangular prism

Step-by-step explanation:

Because I'm smart

what will happen when you solve the problem?( Design brief and investigation).​

Answers

When a design brief & investigation is used for problem solving, then, the problem will be solved in structured manner.

What is a design brief and investigation?

This is a brief  that provides a structured way to apply knowledge and skills to solve problems while the investigation tells how to search for the knowledge that we need.

In conclusion, the problem will be solved in structured manner if we use a design brief & investigation for solving a problem.

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Investment: $200
Simple Interest Rate 2%
Function:
Sketch:
Please help me and I’ll give you brainlist

Answers

0.8%? Im guessing not enough information

1.
Joshua and Helen are painting sections of their house this weekend. It will take
3 7/9 gallons to paint the room upstairs. The downstairs room will need 5 1/3 gallons
of paint. If they buy 10 gallons of paint, how much will be left over?

Answers

Answer:

8/9 will be left over

Step-by-step explanation:

3 7/9 + 5 1/3= 9 1/9

Now subtract the amount of paint needed by how much paint there is:

10- 9 1/9= 8/9

Therefore, 8/9 will be left over

Hope this helps

Three forces, (15i+j) N, 5qi – pj) N and (-3pi - gj) N, where p and q are
constants, act on a particle.
Given that the particle is in equilibrium, find the value of p and the value of q.

Answers

Given that the particle is in equilibrium, the value of p = 2.5 and the value of q = -1.5

To answer the question, we need to know what force are

What is a force?

A force that thing which cause a change in motion of an object

Since there are three forces (15i + j) N, (5qi – pj) N and (-3pi - qj) N, where p and q are constants, act on a particle. Given that the particle is in equilibrium, the resultant force on the particle is zero.

What is a resultant force?

A resultant force is a vector sum of two or more forces

So,  (15i + j) N + (5qi – pj) N + (-3pi - qj) N = 0i + 0j

15i + 5qi - 3pi + j - pj - qj = 0i + 0j

(15 + 5q - 3p)i + (1 - p - q)j = 0i + 0j

Equating components, we have

15 + 5q - 3p = 0 and 1 - p - q = 0

5q - 3p = -15 (1) and - p - q = -1

5q - 3p = -15 (1) and p + q = 1 (2)

From equation (2), p = 1 - q (3).

The value of q

Substituting p into (1), we have

5q - 3p = -15 (1)

5q - 3(1 - q) = -15

5q - 3 + 3q = -15

5q + 3q = -15 + 3

8q = -12

q = -12/8

q = -3/2

q = - 1.5

The value of p

Substituing q into (3), we have

p = 1 - q

p = 1 - (-3/2)

p = 1 + 3/2

p = (2 + 3)/2

p = 5/2

p = 2.5

So, the value of p = 2.5 and the value of q = -1.5

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What quadrant does the terminal side of this angle lie in?
A) Quadrant ll
B) Quadrant IV
C) Quadrant l
D) Quadrant III

Answers

Answer:

D. quadrant III

Step-by-step explanation:

A local print shop has a big order of pamphlets to print, so they decide to use two of their printers for the one job. The newest printer can print the pamphlets four times as fast as the old printer Working together the printers can complete the job in 4 hours. How many hours would it take cach printer to print all of the pamphlets by itself a . Use the table to set up a rational equation to describe the situation. Use the variable x to represent the time it takes the newest printer to complete the job .

Answers

If both printers work together. Then the number of the pamphlets will be 20x in four hours.

What is Algebra?

Algebra is the study of mathematical symbols, and the rule is the manipulation of those symbols.

A local print shop has a big order of pamphlets to print, so they decide to use two of their printers for the one job.

The newest printer can print the pamphlets four times as fast as the old printer Working together the printers can complete the job in 4 hours.

Let x be the number of the pamphlets are printed by the old printer in one hour.

Then the number of the pamphlets are printed by the new printer in one hour will be 4x.

Then if they work together, then the  number of the pamphlets in one hour will be 5x.

Then the number of the pamphlets in 4 hour will be

→ 5x × 4

→ 20x

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100 points!!! need it now!!! A stainless steel patio heater is a square pyramid. The length of one side of the base is 20.8 in. The slant height of the pyramid is 88.5 in. What is the height of the pyramid?

Answers

Answer:

89.3 but im not 100% sure Hope this helps!!

Step-by-step explanation:

Answer:

the height forms a right triangle with the slant height as the hypotenuse and half of the base diagonal as the other leg

(height)^2 = (slant height)^2 - (half of base diagonal)^2

h^2 = 83.3^2 - (10.8 √2)^2

I think so, I hope it helps :)

I got the first part correct but the rest just confuses me

Answers

Answer: -2

Step-by-step:
Plug in 8 for X and -4 for Y
-4=-1/4(8)
Multiply 8 into -1/4
-4=-8/4
Then factor
-4=-2
Add 2 to both side
-2=b

Solve this equation what is 5/6+4/6=

Answers

Answer:

[tex]1\frac{2}{3}[/tex]

Step-by-step explanation:

[tex]\frac{5}{6} + \frac{4}{6} = \frac{10}{6} = \frac{5}{3} = 1\frac{2}{3}[/tex]

PLS ANSWER BOTH QUESTIONS

EXPLANATION NOT NEEDED

MAKE SURE IT IS CORRECT

WILL MARK BRAINLIEST

Answers

Answer:

what is actually the question please

Which inequality is equivalent to 5(2x-6)+6(3-x)<2x+4

Answers

Answer: [tex]x < 8\\[/tex]

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Interval Notation: (-∞, 8)

The equivalent inequality to 5(2x-6)+6(3-x)<2x+4 is x < 8.

Let's simplify the given inequality step by step:

Original inequality: 5(2x - 6) + 6(3 - x) < 2x + 4

Distribute the constants inside the parentheses:

10x - 30 + 18 - 6x < 2x + 4

Combine like terms on the left side:

(10x - 6x) - 30 + 18 < 2x + 4

4x - 12 < 2x + 4

Subtract 2x from both sides to isolate the x terms on the left side:

4x - 2x - 12 < 4

Simplify:

2x - 12 < 4

Now, add 12 to both sides:

2x - 12 + 12 < 4 + 12

2x < 16

Finally, divide both sides by 2:

2x / 2 < 16 / 2

x < 8

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Which of the following is a disadvantage of renewable energy?
A. It creates large amounts of pollution
B. It could be costly to initially switch to.
C. It will not produce enough power to sustain us.
D. It will not run out.

Answers

B. It could be costly to initially switch to.

A disadvantage of renewable energy would be It could be costly to initially switch to. Hence option B is true.

Used the definition of renewable energy that states,

Renewable energy is energy that comes from a source that won't run out. They are natural and self-replenishing and usually have a low- or zero-carbon footprint.

Now, Renewable energy sources have numerous advantages, such as being environmentally friendly and sustainable, one of the disadvantages is the initial high cost of transitioning from traditional energy sources to renewable ones.

Since renewable energy sources do not create large amounts of pollution.

Additionally, renewable energy has the potential to produce ample power to meet our needs.

Finally, the fact that renewable energy will not run out is actually an advantage, not a disadvantage.

Hence, Option B is true.

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Can someone plot this for me please.

Represent the sum of the complex numbers –4 + 3i and — 2 — on the complex plane.
Use the Point and Segment tools to plot all required points and segments.

Answers

The sum of -4 + 3i and -2 - i implies that we plot -6 on the real side, and 2i on the imaginary side of the complex plane

How to plot the points?

The complex numbers are given as:

-4 + 3i and -2 - i

The sum of these numbers is represented as:

Sum = -4 + 3i -2 - i

Collect the like terms

Sum = -4  -2 + 3i - i

Evaluate the like terms

Sum = -6 + 2i

The above means that we plot -6 on the real side, and 2i on the imaginary side of the complex plane

See attachment for the graph of the sum

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3. The perimeter of a rectangle is 24 cm. One side is 7 cm.
Work out the length of the other sides,
7 cm
cm
cm
Not drawn
to scale
ст

Answers

Answer:

L=5cm

Step-by-step explanation:

[tex]p = 2(l + w) \\ 24 = 2(l + 7) \\ l + 7 = 12 \\ l = 5cm[/tex]

The relationship between
A:All of these

B:Adjacent

C:Linear Pair

D:None of these

E:Supplementary

Answers

Answer:

I think you are intended to pick A as your answer. But D is a thorn. The question especially D is not worded accurately.

Step-by-step explanation:

Remark

I take it that you are asked what the relationship between a and b is. What you can say is that a and b are a linear pair if a and be have 1 leg on a ray. I will treat it that way, but you should always question whether that is true or not.

Solution

Adjacent Math meaning: Each angle has a common side and a common point where they meet. A and B are adjacent: True.

Linear Pair. True A and B are adjacent angles and they are also supplementary. So C and E are both true.

That makes D incorrect.

Evaluate the expression: -125 + 13 − 11 127 -90 123 -123

Answers

Answer:

-101485

Step-by-step explanation:

it seems like your question is incomplete, you dont have all the signs. this is the answer i got

what is 3 x 5 what does it equal

Answers

Answer:

3 x 5= 15

Step-by-step explanation:

If you count by 5's like 5, 10, 15, 20
And if you count by 3's: 3, 6, 9, 12, 15
then find the least common multiple and it is 15

Please mark me as the Branlyest ;) Thanks

Answer:

3 x 5 = 15

Step-by-step explanation:

3 + 3 + 3 + 3 + 3 = 15

I hope this helps!

C. Brian saves some money from his allowance to buy Mother a gift. His daily allowance is P50.00
MONEY SAVED BY BRIAN FROM HIS ALLOWANCE

Friday Php 18.90
Thursday Php 23.15
Wednesday Php 11.80
Tuesday Php 16.35
Monday Php 9.20

1. On what day did Brian save more out of his allowance? How much was his expenses that day?

2. On what day did he save the least? How much did he spend that day?

3. How much is Brian's total savings for one week? If he saved the same amount of money for the succeeding weeks, how much savings does he have in a month?

4. How much more money does he need to save to buy the gift bag for his mother which costs P693.80?​

Answers

Answer:

1.thursday

his expenses was p26.85

2.monday he spent p40.8

3.18.90+23.15+11.80+16.35+9.20=approximately p55.6×30 days=p1,668

4.693.80-1,668

so he savings is completely enough

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