Mathematics High School

Which expression is equivalent to 4+5i•(2-7i)?

Answers

Answer 1

Answer:

(4 + 5i)(2 - 7i) = 8 - 28i + 10i + 35

= 43 - 18i

4 + 5i(2 - 7i) = 4 + 10i + 35

= 39 + 10i

Related Questions

a bag contains 10 red marbles, the ratio of red marbles to blue marbles is 5 to 1 find the numbers of blue marbles in the bag

Answers

Answer:

The Answer is 2 blue marbles.

Step-by-step explanation:

The numbers of blue marbles in the bag will be 2.

What is proportion ?

A proportion is an equation based on the equality of two ratios.

Here it is given that :

a bag contains = 10 red marbles

the ratio of red marbles to blue marbles is = 5:1

That is :

5 ratio of marbles is equals to = 10 marbles

now,

1 ratio of marbles is equals to = 2 marbles

Therefore, the numbers of blue marbles in the bag will be 2.

Answers

Answer:

(8+8)=16 + (5x3)=15

Step-by-step explanation:

so 16+15=31 all you have to do is parenthesis first then do whatever is in the middle last

Match each inequality with its solutions set

Answers

Answer:

1. will be 2×1+1<_3

2. with 1+3×-2>_5

3. with 5--2×3>_11

4.5×2+7>_17

What is the answer.”what is the slope and the y-intercept of the line on the graph below.

Answers

Answer: A: Slope = -4, y-intercept 1

Step-by-step explanation:

To find slope, do rise over run. The y-intercept is where the line crosses the y-axis.

In any triangle with 105 angle, is the. Longest side always the opposite side

Answers

Answer:

yes

Step-by-step explanation:

PLSSSS HELP ME I WILL GIVE BRAINLIEST, A HEART, AND 5 STARS PLSSS HELP ME THIS IS DUE BY THE END OF TODAY

Answers

Answer:

who wanna talk im bored

Answer:

Step-by-step explanation:

9
A beach ball has a diameter of 28 inches. Which expression uses the formula for the volume
of a sphere correctly?
(1 Point)
O 3/47 (14)
4/3(78)
O 4/37 (28)
4/377 (14)

Answers

Answer:

a ball strecker

Step-by-step explanation:

HURRY WILL MARK YOU BRAINLIEST RIGHT ANSWER ONLY

Answers

Answer:

Step-by-step explanation:

set the two equations equal to each other then solve for n

6n + 3 = 4n + 11

2n = 8

n = 4

plug n in for both equations

6(4) + 3

24 + 3 = 27

4(4) + 11

16 + 11 = 27

27 + 27 = 54

the distance is 54

Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation for the water level, L, after d days.

Answers

Answer:

L = -0.5x + 34

Step-by-step explanation:

When finding m in the formula y = mx + b. Find a word that means multiplication, in this case 0.5 feet per day.

Help please !!!! I’ll give u brainliest

Answers

Answer:

they all have 3 points seeeee

Round 545 to the nearest hundred

Answers

Answer:

500

Step-by-step explanation:

Answer:

500

When rounding to the nearest hundred, like we did with 545 we use these rules

first you would have to round the number up to the nearest hundred if the last two digits in the number are 50 or above.

then you would have to round the number down to the nearest hundred if the last two digits in the number are 49 or below.

lastly you would have to see if the last two digits are 00, then we do not have to do any rounding, because it is already to the hundred.

Can you please help me with this? the question is What is Andrew's mistake? and find the correct answer?

Answers

Answer:

there is no -1 it must be one so it is now 3/4 x 4/3=12/2=1

Step-by-step explanation:

When you divide by a fraction, you must take its reciprocal and multiply.
Andrew did not do that,

So, (-3/4) / (4/3) becomes (-3/4) x (3/4)
The answer is -9/16.

If a class of 30 students have to split the boys and girls in hafe and 10% are girls, how meany girls are in the class

Answers

Answer:

10 girls

Step-by-step explanation:

Find the length of BC.
A)8
B)12
C)16
D)18

Answers

Answer:

i think its A (edit: im gonna take that back because i was looking at the wrong side, logically it is 12)

Step-by-step explanation:

Answer:

B. 12

Step-by-step explanation:

logically speaking is 12

I WILL GIVE BRAINLIEST THIS IS EASY PLS HELP ASAP

Match each term with its definition.

Perpendicular lines?
Angle?
Line segment?
Parallel lines?
Circles?

Answers

Ah bg de cf

Step-by-step explanation:

i think thats how you do it becuse i did that

For A the answer is 4
For B the answer is 3
For C the answer is 5
For D the answer is 1
For E the answer is 2

LOOK AT THE PICTURE

Please help I’m on a test will mark brainliest!

Answers

Answer:

2/7

Step-by-step explanation:

You have to flip the fraction to check, you see what times 3 gets you six... 2!

then what times one gets you 7.. 7! and that how you get 3/7

solve the system of linear equations by graphing x=3 y=-1/2

Answers

Answer:

x=5 hope this helps

Step-by-step explanation:

I don't understand this at all. Please help.

- A confused eighth grader.

Answers

Answer:

Step-by-step explanation:

All the other ones are functions because their relations all start with different numbers except T, where it has 3 two times.

Mrs. Eng bought 4 packs of glue sticks. Each pack has 5 glue sticks.

Her class uses 2 of the glue sticks for a project.

Answers

Answer:

18 glue sticks are left

Step-by-step explanation:

Full Question:

Mrs. Eng bought 4 packs of glue sticks. Each pack has 5 glue sticks. Her class uses 2 of the glue sticks for a project. How many glue sticks are left?

Calculations:

4 x 5 = 2020 - 2 = 18

Answer: There are 18 gluesticks left.

Explanation: 4 times 5 equals 20, and taking away 2 would equal 18.

why sad? be happy :v

Answers

Answer:

Because two of my uncles got shot and my moms friend committed suicuide. This all happened this year. That’s why I’m sad.

Step-by-step explanation:

2z-6=20..............

Answers

Answer:

[tex]\bf\pink{13}[/tex]

Step-by-step explanation:

Given :-[tex]\sf\blue{2z - 6 = 20}[/tex]

To Find :-Finding / solving to get the 'z' value

Solution :-

[tex]\Rightarrow \: \:\sf\purple{ 2z - 6 = 20}[/tex]

Move the constant to right hand side and change its sign

[tex]\Rightarrow \: \:\sf\green{ 2z = 20 + 6}[/tex]

Add the numbers

[tex]\Rightarrow \: \:\sf\purple{ 2z = 26}[/tex]

Calculate both side of equation by 2

[tex]\Rightarrow \: \:\sf\green{ 2z \div 2 = 20 \div 2}[/tex]

Any expression divided by itself equals to 1

[tex]\Rightarrow \: \:\sf\purple{z = 26 \div 2}[/tex]

Calculate the quotient

[tex]\Rightarrow \: \:\sf\pink{z =13}[/tex]

[tex]\bf\red{Hope \: it \: helps}[/tex]

how do you use scientific notation to estimate the hours in a year

Answers

Answer:

8.760 x 10^3

Step-by-step explanation:

There are 8760 hours in 1 year. So, you can convert this to scientific notation by moving the decimal from 8760 three times to the left: 8760. → 8.760 And since it was moved three times, put an exponent of 3 to the 10: 10^3 So, you get 8.760 x 10^3 hours in a year.

Hope this helps! :)

3х + 4 = 2х + 10
what is the answer? i’m struggling to work this out.

Answers

Answer:

x=3

Step-by-step explanation:

3x+4=2x+10

-3 -3

4= -1x+10

-10 -10

-6= -1x

divide by -1

x=6

Thats how you do it

Answer:

x=6

Step-by-step explanation:

first you have to subtract 4 from both sides

3x=2x+10-4

then simplify 2x+10-4 to 2x+6 so you will get

3x=2x+6

-2 -2

(^^you subtract 2x from both sides )

then you get your answer which is x=6

What's the value of 6.7×0.54

Answers

Answer:

What's the value of 6.7×0.54

3.618

Step-by-step explanation:

Answer:

3.618

Step-by-step explanation:

3.618

1,682 inches rounded to the narest tenth is 1.6 inches? true or falce

Answers

Answer:

False

Step-by-step explanation:

False because that’s just what it is

Each of the 6 people in mandy's family orders 2 tacos. Each taco cost 3$. What is the total cost of the tacos?

Answers

Answer:

Step-by-step explanation:

6 x 2= 12

12 x 3= 36

find the slope of the line y=-3/8x-7/6

Answers

Answer:

The slope is -3/8

Step-by-step explanation:

Y= mx+b

m or mx is the slope while b is the y intercept

-3/8 hope it helps :)

(4,6), (73),(4,2),(-3.3),(0, 8)
Is this relationship a function?

Answers

No because 4 is repeating ...(4,6) and (4,2)

In parallelogram PQRS if m

Answers

Answer:

m∠RSP = 130°

Step-by-step explanation:

In parallelogram,opposite angles are equal.

m∠RSP = m∠PQR

m∠RSP = 130°

Answer:

∠RSP=130

Step-by-step explanation:

It is given that ∠PQR = 130°

∴∠RSP = 130° (vertically opposite angles are equal in a parallelogram)

The parabola with the vertex at (5,5) and a focus (7,5) would open

Answers

Answer:

Up. The focus is above the vertex meaning the parabola will open up. If the focus was below the parabola then it would open down.

Step-by-step explanation:

Other Questions

Meg the Stallion placed 8 books on each shelf of a bookcase. If she shelves 32 books. How many shelves are needed? BRAINLIEST !!! 14. Find the length of the midsegment (NOT X)88+4016x7 Need help, asap! Will give away 40 Brainly points! As one of the resource-rich people in the world, what would you think about a plan that would lower the standard of living for countries rich in resources to make resources last longer? whats 6/7 - 1/2? also how do i subtract fractions with unlike denominators? you dont have to answer the 2nd question Jason purchased a pack of game cards that was on sale for 13% off. The sales tax in his county is 8%. Let y represent the original price of the cards. Write an expression that can be used to determine the final cost of the cards.BRAINLIEST y 0.13y 1.08(0.87y) 0.08(0.87y) y 0.87y + 0.08y milo is applying for a job in a university's office of student-affairs as a student activity's coordinator. imagine milo is an excellent candidate with plenty of experience, skills, and personality traits suitable for this job. write a cover letter as if you were milo talking about the specifics that make you a great fit for the job. Expand 4(-2y + 3).-8y + 122y + 7-8y + 32y + 12Random Math because I'm too lazy time \_()_/ Help me please *an image is attached* Which of the following describes redox in displacement plating? which of the following statements best describes how the traits of an organism are determined by the DNA in their cells? Consider the following code snippet:public class Employee{private String empID;private boolean hourly;public Employee(){}. . .}Which statement reflects the action performed when the constructor to Employee is called? I need help plz and thank you this is duePhysical EducationSoccer Assignment Directions: Research three of the worlds most famous soccer players. Compose a brief visual presentation using PowerPoint to present each player and their accomplishments. Your presentation should reflect your understanding of the sport as well as the athletic ability needed to be successful. Assignment Guidelines: Your presentation should include elements of: Childhood Work ethic Hardships Examples from games Terminology consistent with the sport Submission Requirements: Submit your presentation When submitting written assignments please remember to: Submit the assignment question(s) and your responses. Proof-read for spelling, grammar, and punctuation. Remember complete sentence structure. Paragraphs need to have a minimum of six sentences. 2 3 + 6^{2} 9 i need help with this one Find the slope of the line.On a coordinate plane, a line goes through (negative 1, 0) and (negative 1, 1).a.Undefinedc.Three-halvesb.0d.-1 After the Boston Tea Party the Coercive Act closed what until the price of the tea was repaid? aBoston Harbor bParliament cNew York Harbor dCongress What range of emotions do the Jackson's experience before and after the election? (ELA) What punctuation marks are used to show which words come directly from a story?A. quotation marksB. commasC. question marksD. exclamation marks What is true about comedies?A. The Greeks developed comedies before tragedies.B. Comedies were particularly popular after the fall of Rome, but disappeared in the Middle Ages.C. Fewer ancient comedies than tragedies have survived.D. All of the above. The art song, or lied, is strongly associated with which of the following composers?A. Franz SchubertB. Richard WagnerC. Felix Mendelssohn D. Hector Berlioz how many valence electrons in an oxygen atom?