What is the product of the complex numbers below?
(3-9i)(6-i)

Answers

Answer 1

Answer:

(9-57i)

Step-by-step explanation:

We need to find the product of the given complex number i.e.

(3-9i)(6-i)

It can be solved as follows :

(3-9i)(6-i) = 3(6) +3(-i) +(-9i)(6) + 9i(i)

= 18-3i-54i+9i²

We know that, i² = -1

So,

= 18-3i-54i+9(-1)

= 18-57i-9

= 9-57i

So, the product of the given complex number is (9-57i).


Related Questions

Please help me with this one

Answers

Answer:

19.1 cm

Step-by-step explanation:

the other side = √8.1²-7.1²=√65.61- 50.41

= √15.20 = 3.9

perimeter = 7.1+8.1+3.9= 19.1 cm

Question 2
Which of the following sets of numbers could represent side lengths of a right triangle?
6m, 10m, 16m
06m, 8m, 10m
6m, 8m, 9m
6m, 6m, 11m

Answers

I think it is the last one because the two top line at the top must be the same length

PLEASE QUICK I ONLY HAVE 11 MINS I NEED THIS ONE QUICK!

WILL GIVE BRAINLY

Answers

Answer:

the answer is 7 feet

2πr/2π=14π/2π

r=7 feet

I will mark you brainlest!


A figure below was made with 2 rectangles. Some side lengths are shown. What is the area of the figure in square inches?

Answers

Answer:

46 in²

Step-by-step explanation:

Last year I read 120 books. This year I want to increase that by 55%.

How many books should I read this year?

Answers

Answer:

186?

Step-by-step explanation:

the answer would be 186, try that!!<3

Plz answer quickly will mark brainless

Answers

B is answer to this

A square based pyramid has a square base and ________ triangular sides.
I need help with this one​

Answers

Answer:

4 triangular sides

Step-by-step explanation:

What is the inverse of f(x)=1.5^x+4

Answers

Answer:

Step-by-step explanation:

The inverse function of [tex]f(x) = 1.5^x + 4[/tex] is [tex]f^{-1}(x) = \log1.5(x - 4)[/tex]

In other words, the required answer is  [tex]f^{-1}(x) = \log1.5(x - 4)[/tex]

To find the inverse of the function[tex]f(x) = 1.5^x + 4[/tex], we need to swap the roles of x and y and solve for y.

Start with the original function:

[tex]y = 1.5^x + 4[/tex]

Swap x and y:

[tex]x = 1.5^y + 4[/tex]

Solve for y:

Subtract 4 from both sides:

[tex]x - 4 = 1.5^y[/tex]

Take the logarithm (base 1.5) of both sides:

[tex]\log1.5(x - 4) = y[/tex]

Rewrite the equation with y as the subject:

y = log1.5(x - 4)

Therefore, the inverse function of [tex]f(x) = 1.5^x + 4[/tex] is [tex]f^{-1}(x) = \log1.5(x - 4)[/tex]

In other words, the required answer is  [tex]f^{-1}(x) = \log1.5(x - 4)[/tex]

Learn more about inverse functions here:

https://brainly.com/question/29141206

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Help meee please I need help

Answers

Answer:

A

Step-by-step explanation:

[tex]d^2+16^2=25^2\\d^2+256=625\\d^2=368\\d=19.2[/tex]

Answer:

The answer is D. 47 meters.

What is the distance to the nearest tenth of a unit between point H ( -4,6 ) and point I ( 2,-3 )

Answers

Answer:

10.81 units

Step-by-step explanation:

Given data

point H ( -4,6 ) and point I ( 2,-3 )

x1= -4

y1=6

x2= 2

y2=-3

The formula for the distance between two points is

d=√((x_2-x_1)²+(y_2-y_1)²)

d=√((2-(-4))²+(-3-6)²)

d= √(2+4)²+(-9)²)

d= √(6)²+(-9)²)

d= √36+81

d=√117

d= 10.81 units

Hence the distance between the points is 10.81 units

Milan brought 18 packs of cola to a party, and each pack had 8 cans. Donna brought 9 cans of juice. How many cans did they bring in all?
cans

Answers

Answer:

I think its 72 cans

Tell me if I'm wrong!

what is the pattern to 1,2,4,7,11

Answers

Answer:

1+1=2

2+2=4

4+3=7

7+4=11

so the patter is number + natural numbers (serially)

Step-by-step explanation:


It takes exactly 26 paper clips laid end to end to make 17 7/8 inches. How long is each paper clip? (I really need the explanation)

Answers

Answer:

11/16 inch or 0.6875 inch

Step-by-step explanation:

26 * x = 17 7/8

17 7/8 = 143/8

143/8 ÷ 26 = 143/8 x 1/26 = 143/208 = 0.6875

0.6875 in = 11/16 in

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Check

11/16 x 26 = 17.875 or 17 7/8

Y is 5 times more than x

Answers

Answer:

y = 5x

Step-by-step explanation:

Form the equation:

y = 5 times x or y = 5x

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

find the common difference of the arithmetic sequence -2, -11/4, -7/2

Answers

Answer = 3/4

First, change them all into like fractions.

-2, -11/4, -7/2 = -8/4, -11/4, -14/4

Therefore the common difference of their arithmetic sequence is 3/4

Hope it helps u.

Please mark the brainliest

Thank You

What is the surface area of this rectangular prism? 64 cm 35 cm 42 cm​

Answers

Answer:

bbbbbbbbbbbbbbbb

Step-by-step explanation:

Andre sells T-shirts. He charges
customers $19 per T-shirt, plus a delivery
fee of $8 per order. The amount, y, that
Andre charges for an order of x T-shirts is
represented by the equation y = 19x + 8. A
customer paid $217 for an order of
T-shirts. How many T-shirts did the
customer order?

Answers

Answer:

11

Step-by-step explanation:

217 = 19x + 8

209 = 19x

x = 209/19

x = 11

if r = 1 and 0 = 7pi /6 what is the approximate arc length

0 = theta


A.)1.75

B.)5.498

C.)21.991

D.)7.330

Answers

Answer:

[tex]l = 3.66[/tex]

Step-by-step explanation:

Given

[tex]r =1[/tex]

[tex]\theta = \frac{7\pi}{6}[/tex]

Required

The arc length (l)

This is calculated as:

[tex]l= r\theta[/tex]

So, we have:

[tex]l = 1 * \frac{7\pi}{6}[/tex]

[tex]l = \frac{7\pi}{6}[/tex]

So, we have:

[tex]l = \frac{7*3.14}{6}[/tex]

[tex]l = 3.66[/tex]

None of the options is correct

Can someone please help with this ASAP!!

Answers

Answer:

Area of 2 triangle = 1/2* base*height

= 1/2*21*20= 21*10= 210 cm ^2= 2*210= 420 cm^2

Step-by-step explanation:

Find the mean of the data given.


Number of the children in 6 families: 4, 0, 3, 6, 3, 2

The mean number of the children in the 6 families is ?

Answers

Answer:

The mean number of children is 3.

Step-by-step explanation:

The mean of the data is 3

What is mean?

Mean is the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers.

Mean = (Sum of all the observations/Total number of observations)

The mean of the given data will be:

[tex]Mean =\frac{4+0+3+6+3+2}{6} \\\\=\frac{18}{6}\\ \\=3[/tex]

To learn more about mean: https://brainly.com/question/13451489

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∠E and ∠F are vertical angles. If m∠E=(5x+55)° and m∠F=(11x-53)°, find m∠E

Answers

Answer:

145° = m∠E

Step-by-step explanation:

Vertical Angles: always congruent, therefore, to find Angle E first find "x" ;

5x + 55 = 11x - 53

55 = 6x - 53

108 = 6x

108/6 = x

18 = x

Now that we know x-value is 18, u can substitute that in for the equation for Angle E for "x";

=> 5(18) + 55 = m∠E

=> 145° = m∠E

Hope this helps!

I need help for this question

Answers

9514 1404 393

Answer:

  a) Cat

  b) 8

  c) 6

Step-by-step explanation:

a) Each line contains one large square, at least. The smallest additional area is on the Cat line. Apparently, the fewest people preferred cats.

__

b) The smaller symbols appear to represent 1/4, 1/2, and 3/4 of the larger square. On that basis, we can add all of the symbols to discover there are a total of 10 of them:

  1 1/4 +1 3/4 +2 1/2 +1 1/2 + 3 = 8 + (1/4 +3/4) +(1/2 +1/2) = 8 +1 +1 = 10

Since 10 symbols represent 80 people, each large square symbol must represent 8 people.

__

c) The number preferring dogs is (1 3/4)(8) = 14. The number preferring giraffes is (2 1/2)(8) = 20. Then 20 -14 = 6 more people preferred giraffes.

Answer:

cat,8,6

Step-by-step explanation:

i think im not sure

Bob has a coin cup with four $1 tokens and two $5 tokens in it. He also has two $10 tokens and one $25 token in his pocket.
He randomly draws a token froin the cup, and then randomly draws a token from his pocket. What is the probability that he
will draw $30 in tokens?
OB.
. В

Answers

We want to find the probability that Bob will randomly draw $30 in tokens. We will find that the probability is P = 1/6 = 0.167

Finding the probability.

The only case where he draws $30 randomly is when:

He takes one $5 token from the coin cupHe takes the $25 token from his pocket.

Then we need to find the probabilities for these two events.

For the first one, the probability will be equal to the quotient between the number of $5 tokens and the total number of tokens in the cup. There are 6 tokens in the cup and 2 of these are $5 tokens, then the probability is:

p = 2/6 = 1/3

For the second event the probability is computed in the same way, he has two tokens in his pocket and one of them is a $25 token, then the probability is:

q = 1/2

The joint probability, the probability that both of these events happen at the same time, is given by the product of the individual probabilities, so we get:

P = p*q = (1/3)*(1/2) = 1/6 = 0.167

So the probability that he draws $30 in tokens is P = 1/6 = 0.167.

If you want to learn more about probability, you can read:

https://brainly.com/question/251701

Answer:

4/9

Step-by-step explanation:

y=-5(-4)^2 - 40(-4) + 10​

Answers

Answer:

Step-by-step explanation:

y=-5(16)-160+10

y=-80+160+10

y=90

Please help! I will give Brainliest!
Who is correct?

Answers

Annie is correct, and I’ll tel u why you can make the same triangle but just flip it so it not going the same way see tell me if u got it correct.
Annie is the one who’s correct.

In Parallelogram WXYZ, diagonals WY and XZ intersect at A. WA=x2−24 and AY=2x.

What is WY?

Enter your answer in the box.

WY=
units

Answers

Answer:

[tex] \displaystyle WY = 24[/tex]

Step-by-step explanation:

refer the attachment

remember that,

the diagonals of Parallelogram bisect each other so WA=AY

thus our equation is

[tex] \displaystyle {x}^{2} - 24 = 2x[/tex]

move left hand side expression to right hand side and change its sign:

[tex] \displaystyle {x}^{2} - 2x - 24 =0[/tex]

rewrite 2x and 4x-6x:

[tex] \displaystyle {x}^{2} + 4x -6x - 24 =0[/tex]

factor out x:

[tex] \displaystyle x ({x}^{} + 4) -6x - 24 =0[/tex]

factor out -6:

[tex] \displaystyle x ({x}^{} + 4) -6(x + 4) =0[/tex]

group:

[tex] \displaystyle ({x}^{} + 4) (x - 6) =0[/tex]

recall that,

When the product of factors equals 0 then at least one factor is 0 so

[tex] \displaystyle \begin{cases} {x}^{} + 4 = 0 \\ x - 6 =0 \end{cases}[/tex]

[tex] \displaystyle \begin{cases} {x}^{} = - 4\\ x =6 \end{cases}[/tex]

since the length cannot be negative negative x isn't available

therefore

[tex] \displaystyle \therefore x = 6[/tex]

since WA and AY are the part of WY we acquire:

[tex] \displaystyle WY = {x}^{2} - 24 + 2x[/tex]

substitute the got value of x:

[tex] \displaystyle WY = {6}^{2} - 24 + 2.6[/tex]

simplify square:

[tex] \displaystyle WY = 36 - 24 + 2.6[/tex]

simplify multiplication:

[tex] \displaystyle WY = 36 - 24 + 12[/tex]

simplify addition:

[tex] \displaystyle WY = 48- 24[/tex]

simplify substraction:

[tex] \displaystyle WY = 24[/tex]

hence,

[tex] \displaystyle WY = 24[/tex]

Diagonals bisect each other

WA=AYx²-24=2xx²-2x=24x²-2x-24=0x²-6x+4x-24=0x(x-6)+4(x-6)=0(x+4)(x-6)=0

Take it positive

x=6

Now

AY=2(6)=12WY=12(2)=24

Please help!!! How do I do this? What is X and how do I find it?

Answers

Answer:

[tex]x = 6 \sqrt{3} [/tex]

Step-by-step explanation:

[tex]x = \sqrt{ {12 }^{2} - {6}^{2} } = 6 \sqrt{3} [/tex]

Given: x + 3.8 > -10.02.



Choose the solution set.

Answers

Answer:

x > -13.82

Step-by-step explanation:

The first step in finding the solution set is to subtract 3.8 from both sides of the given inequality:

x > -10.02 - 3.8. or

x > -13.82

can some one explain please​

Answers

what kind of question is this lol ? i don’t even understand it

heyy! i’ll give brainliest please help

Answers

Answer:

they held yearly elections so I would say democracy but I'm not 100% sure

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