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 small business has 15 full-time employees. How many people does the small business employ if the full-time workers make up 30% of the employees the company has?

Answers

Answer:

50 employees

Step-by-step explanation:

The total number of employees the business has will have to be made up the full-time employees and part-time employees.

The number of full-time employees = 15

Let the total number of  employees = x

[tex]15 = 30 percent of x[/tex]

[tex]15 = 30/100 \times x\\x=1500/30 = 50[/tex]

The company has a total of 50 employees

can someone help out

Answers

Answer:

B' = (0,-2)

C' = (3,-3)

D' = (4,1)

Find the slope and the y-intercept of the graph of y + 1 = x.​

Answers

Answer: The slope is 4/3

Step-by-step explanation:

Whatever number is attatched to the "x" is the slope.

Answer:

Slope: M = 4/3

Y-Intercept: : (0,−1)

Step-by-step explanation:


A student solves a quadratic and gets solutions of x=-7 and x=8. Could the discriminant of this equation equal -188?

Answers

Answer:

7

Step-by-step explanation:

Help picture shown !!!! please.

Answers

Answer:

x=266/41

Step-by-step explanation:

1ft 7in/3ft 5 in=x/40

or,12in+7in/36+5=x/40

or,19in/41in=x/40

or,19*40/41=x

•°•x=266/41

Find the measure of each angle indicated. HELPPP PLEASE

Answers

Answer:

2

Step-by-step explanation:

Answer:

they equal 360 so add all and minus that by 360 like for example its 160 total minus 360-160

Step-by-step explanation:

Solve the system of equations by graphing:
y= 2x +8
-x+y=0

Answers

Answer:

Slope = 4.000/2.000 = 2.000

Slope = 2.000/2.000 = 1.000

Step-by-step explanation:

the first answer is for the first problem and the second answer is for the second problem. Hoped it helped i tried my best.

Bilecko yeah lol thanks

What is the slope of this line?
A. 2
B. -1/2
C. 1/2
D. -2

Answers

B. -1/2. You find the slope by rise over run. The rise is -4, the run is 2. -4/2 is simplified to -1/2. Hope this helps!

Which is a point 6units to the left of 4

Answers

-2 i believe, have a great day :)

An item is regularly priced at $75. It is now priced at a discount of 35% off the regular price. Find the price now.

Answers

Answer:

48.75

Step-by-step explanation:

What is the slope of a line perpendicular to the line whose equation is
10x – 8y = -80. Fully reduce your answer.

Answers

Answer:

-4/5

Step-by-step explanation:

write the given equation in y=mx+b form, where m is the slope

10x-8y=-80

-8y= -10x-80 divide both sides by -8

y=(10/8)x+10

y=(5/4)x+10

m= 5/4 is the slope of the given function

the slope of an equation that is perpendicular is the negative reciprocal of the given one so is

m= -4/5

Which transformation maps B (2,5) to B'(-2,-5)?
A. A 90 degree rotation
B. Reflection about the y-axis
C. A 270 degree rotation
D. A 180 degree rotation

Answers

Answer: B

Step-by-step explanation: Because the positive numbers changed to negatives meaning that it flipped over an axis and since both of them changed it would be the y-axis

wHaT is 3+3x+45??????????

Answers

Answer:

3x+48

add 3+45=48

Step-by-step explanation:

Hope this helps! Please consider marking brainliest! I hope you have an amazing day. Always remember, your smart and you got this! -Alycia :)

Answer:

3(x+16)

Step-by-step explanation:

45+3=48

3x/3=x

48/3=16

3(x+16)

HELP THIS IS DUE TODAY!

Answers

Answer:

I think its B

Step-by-step explanation:

I hope it helps

(-3.2)(-1.72) Write your answer to the nearest tenth

Answers

Answer:

5.5

Step-by-step explanation:

Answer: actually 5.504 rounded to 5.5

Step-by-step explanation:

Solve the following inequality.
7(6 - 4n) + 4n > 138

Answers

Answer:

n <−4

42 - 28n + 4n >138

42 - 24n >138

-24n > 138 - 42

-24n >96

n <−96/24

N <−4

Karen baked 40 oatmeal cookies and 32 chocolate chip cookies to package in plastic containers for her teachers at school. She wants to divide the cookies into identical containers so that each container has the same number of each kind of cookie.

Answers

I did 40+32 in got 72

Or 40-32=8

So I need help with something so can you explain a coordinates plane

Answers

A coordinate plane is a two dimensional plane formed by the intersection of a vertical line called y axis and a horizontal line called x axis! Hope this helps

Answer:

sure so quadrant one is top right and its positive positive and quadrant 2 top left and is negative positive quadrant 3 is bottom left and negative negative quadrant 4 is bottom right and its positive negative

Step-by-step explanation:

NEED HELP MARKING PEOPLE AS BRAINLIST ANDWER IF YOU KNOW

Answers

Answer:

it will be C) SAS(side angle side)

b) Amount
Rs 5760, Interest
Rs 1526​

Answers

Given :

Amount, A = 5760 Rs.

Interest in the amount, I = 1526 Rs.

To Find :

We need to find the % rate of interest.

Solution :

Let, us assume it is simple interest.

So,

[tex]Interest = \dfrac{price \times rate \times time}{100}\\\\1526 = \dfrac{5760 \times r \times m}{100}\\\\r = \dfrac{152600}{5760m}\\\\r = \dfrac{26.5}{m}[/tex]

Hence, this is the required solution.

If I can read 54 pages in 3 days, how many can I read in 1 day?

Answers

Answer:

18

Step-by-step explanation:

Step 1)

54 ÷ 3 = 18

Answer:

54/3

Step-by-step explanation:

we can use crisscross multiple

What is the answer?

Answers

Answer:

clockwise

Q= (5,-2)

R= (-1,-3)

S= (0,0)

T= (3,-2)

counterclockwise

Q= (-5,2)

R= (1,3)

S= (0,0)

T= (-3,-2)

Step-by-step explanation:

this might not be right im a little rusty on my transformations but here goes nothing.

i dont know if this is a clockwise or a counter clockwise rotation so ill do both options.

clockwise (x,y) - (y,-x)

q=(2,5) - (5,-2)

r=(3,-1) - (-1,-3)

s=(0,0) - (0,0)

t=(-2,3) - (3,2)

counterclockwise (x,y) - (-y,x)

q=(2,5) - (-5,2)

r=(3,-1) - (1,3)

s=(0,0) - (0,0)

t=(-2,3) - (-3,-2)

HELP NEED THIS BADLY five ninths minus two sixths correct answer=branliest

Answers

Answer:

0.222 as a decimal

111/500 as a fraction

22.2 as a %

A store pays $81 for a hockey stick and marks the price up by 5%. What is the amount of the mark-up?

Answers

.05 is equal to 5%
So for every dollar the mark up is .05cents
So if you times $81 by .05 this will give you the mark up because each of the 81$ needs .05 added to it.

So $4.05 Is the mark up

And

The cost would be markup and original added together

plz, answer the question in the photo.

Answers

Answer:

I'm pretty sure its 1 1/8

Step-by-step explanation:

the answer is H. -11/18

A reflection changes the shape of a figure.


True


False

Answers

Answer:

False

Step-by-step explanation:

A reflection does not change the shape of a figure.

For example, If you look into a mirror, you are looking at a reflection of yourself, but your face doesn't change into something else...! :)

The salesman gave me 20% off of my new laptop regularly priced $500. How
much did I save? *

Answers

Answer:

100

Step-by-step explanation:

20% of 500 is 100

Answer:

$100

Step-by-step explanation:

20% is the same as 1/5. 1/5 of 500 is 100. Then add dollar signs, and you have your answer.

Somebody plz help me I’m failing

Answers

since all triangles add up to 180 and the little square on the bottom left is a 90 degree angle well
180-90=90
so angle B is 80
also the person above me answered in a rude way
it’s ok everything will be fine
you’ll get your grades back up
try your best!! :)

What is the slope of the line passing through the points (3,-20) and (5, 8)?

Answers

Answer:

the answer is -28/20 hope it helps

Answer:

-14

Step-by-step explanation

given f (x) = 5x + 1, find f (-3)

Answers

Answer:

f(- 3) = - 14

Step-by-step explanation:

To evaluate f(- 3), substitute x = - 3 into f(x), that is

f(- 3) = 5(- 3) + 1 = - 15 + 1 = - 14

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