Mathematics High School

If f ( x ) = 3 - i and g ( x ) = 4i,

find f ( x ) g ( x )
Select one:
a. 12i + 3i
b. 11
c. 4i - 3i
d. 4 + 12i

Answers

Answer 1

Answer:

[tex]f(x)g(x) = (3 - i)(4i) \\ = 12i - 4 {i}^{2} \\ = \boxed{12i + 4 }\\ remember \:the \: value \: of \: {i}\: is \: \sqrt{ - 1} \\ and \: {i}^{2} \: is - 1 \\ d. (4 + 12i)\: is \: the \: right \: answer.[/tex]

Related Questions

Example:
Brigette is putting a border around a scrapbook cover.
The cover is 12 inches tall and 14.5 inches wide. How
much border does Brigette need?

Answers

Answer:

Step-by-step explanation:

Brigitte is putting a border, so she needs a perimeter

P=2(L+W)=2L+2W= 2*12+2*14.5=24+29=53

Ryan made $119 for 7 hours of work.
At the same rate, how many hours would he have to work to make $306?

Answers

Answer:

128

Step-by-step explanation:

Answer:

18 hours

Step-by-step explanation:

7/119=x/306

Cross Multiply

119x=2142

x=18

Parson City Middle School has 1,340 students. About 38% of the students are in the seventh grade. About how many seventh-graders attend Parson City Middle School?

Answers

Answer: About 509 seventh-graders attend Parson City Middle School.

Step-by-step explanation:

Total students in the school = 1,340

About 38% of the students are in the seventh grade.

Number of students in the seventh grade = 38% of (Total students in the school)

= 0.38 x (1340)     [38%= 0.38]

= 509.2 ≈ 509

Hence, About 509 seventh-graders attend Parson City Middle School.

The sum of two numbers is 120. Three times
their difference is 48. What are the numbers?
TERS A.5(C) A.1(A), A1(B)
F. 16, 120
G 36, 52
H 52,68
J 68, 84
Pleasss help thank you :)

Answers

Answer:

The answer is 68 and 52

Step-by-step explanation:

x + y = 120

3(x - y ) = 48

We have 3x + 3y = 360

and 3x - 3y = 48

Adding we have the following:

6x = 408

x = 68

y = 120-48 = 52

find the values of z and y pls :)

Answers

Measure of z is 116°.The measure of y is 48°.Hope this helps.

Help explain how you got it! Will mark brainliest!

Answers

6x - 15 = 4x + 11
2x = 26
x = 13

Answer:

i have made it in above pic hope it helps

Can someone help me?

Answers

Answer:

Its the third one

Step-by-step explanation:

Someone pls pls answer this ill mark u brainliest

Answers

Answer:

[tex]m\angle CBD=35^{\circ}[/tex]

Step-by-step explanation:

Since there are [tex]180^{\circ}[/tex] on each side of a line and [tex]\angle ABC[/tex] is marked as a right angle, [tex]m\angle CBE=180-90=90^{\circ}[/tex].

[tex]m\angle CBE=m\angle DBE+m\angle CBD[/tex], and [tex]m\angle DBE[/tex] is given as [tex]55^{\circ}[/tex].

Therefore, we can plug in our values and solve:

[tex]90=55+m\angle CBD,\\m\angle CBD=\fbox{35^{\circ}$}[/tex].

please make x the subject for these questions

a(x-4)=b

c(7+x)=7

x/y-2 = v

v/9x = w/y

vx + w = 5

2w + vx = y

thanks ​

Answers

Answer:

x=b+4a/a

x=7-7c/c

x=y(v+2)

Answer:

That's the answer to everything

The area of a rectangle is given by the expression (x+3)(4x−2). Which of the following is an equivalent expression for the area?

4x2+14x+6

4x2+10x−6

13x−2

14x−6

Answers

Answer:

answer is option b

plz mark as brainliest

From my last post here’s the paragraph

Answers

is that a snake in the pic

Help due asap .......

Answers

Answer:

C

Step-by-step explanation:

I'm only 90% sure. I did it by canceling out the ones that don't make sense.

QC can't be the same as FQ, so A and D are cut out.

QC is longer than FQ, so option B doesn't make sense.

Choose the product of (3x2 + 7)(6x2 - 4x + 5).​

Answers

Answer:

18x^4 - 12x^3 + 57x^2 - 28x +35

Step-by-step explanation:

Step-by-step explanation:

(3×2+7)(6×2-4x+5)= -52x +221

I need help pls help

Answers

Answer:

i do not know sorry :(

Step-by-step explanation:

Correctly name the following angle.

Answers

Answer: ∠EDC or ∠CDE

Step-by-step explanation:

i need help on this please help

Answers

Answer:

v= 5/3

Step-by-step explanation:

Line the numbers

ONE HUNDRED POINTS
Complete the proof.

Below is a drag and drop geometric proof. Complete the proof in your notebook.



Choose from these possible answers:

Answers

Answer:

See the attached

Step-by-step explanation:

Solution provided on the picture attached

The missing statement also added

Plsss help me plsss I need help

Answers

1: 37,345
2: 7,398
3: 3,500
4: 350

2. 37,345

3. 7,398

4. 3,500

5. 350

Hope this helps! :D May i have brainliest?

Line segment JK is divided by point L in the ratio of 3:2. Endpoint J is at (-16, 2) and point L is at (-15, -20). What are the coordinates of endpoint K?

Answers

9514 1404 393

Answer:

  K(-14 1/3, -34 2/3)

Step-by-step explanation:

The division ratio says ...

  (L -J)/(K -L) = 3/2

  2(L -J) = 3(K -L)

  5L -2J = 3K

  K = (5L -2J)/3

  K = (5(-15, -20) -2(-16, 2))/3 = (-75+32, -100-4)/3 = (-43/3, -104/3)

  K = (-14 1/3, -34 2/3)

Which of these is a unit of density?
km/m
kg/m?
kg/m
kg/m

Answers

Answer: Kg/m³

Step-by-step explanation: Mass/ Volume

7x + 5 = 3(2x + 3) + x - 4​

Answers

Answer:

Infinite Many Solutions

0 = 0

Step-by-step explanation:

7x + 5 = 3(2x + 3) + x - 4​ (Given)

7x + 5 = 6x + 9 + x - 4 (Distributive Property Of Equality)

7x + 5 = 7x + 5 (Combine Like Terms)

0 = 0 (Subtraction Property Of Equality)

As you see it's the same thing in both sides and if you solve it gives 0 = 0 because it would cancel each other out and since 0 is equal to 0 it's infinite many solutions.

Find the slope. Please someone answer this I need it I’ve been posting it but no one says anything.

Answers

Answer:

y=1x

y=0.3x

y=4x

Step-by-step explanation:

Part C: What is the value of z?
At a store closing, a universal discount rate
is applied to all items. The table shows the
price for three items.
O
A. $19.50
Total Price
O
B. $1.95
Discount
Original
Price
Price
(including
sales tax)
OC. $34.45
$22.50
$13.50
$14.31
O
D. $20.67
$16.20
$27.00
$32.50
у
Z

Answers

Answer:

Step-by-step explanation: I think it's D

Can someone help me with this

Answers

All of them specifically?

Felix spent $12 on a movie ticket and x amount of money on snacks. He spent no more than a total of $22 dollars. Which inequality could be used to find the amount of money Felix could have spent on snacks?

Answers

$12+X is less than or equal to $22

Please help ASAP!!!!!!!!!!!!

Answers

D. (-2, 0, 1, 3)

x-intercepts are where the line touches the horizontal line (x-axis)

is 2x+12 less than and equal to 14

Answers

Answer:

less than

Step-by-step explanation:

you cant add 2x to 12 because of the x.

Answer:

no, more then i think

Step-by-step explanation:

even we don't know what x is x is coud make the number bigger so 14x is bigger then 14

Can someone help me out

Answers

Answer:

C.

Step-by-step explanation:

c ............. anbrbrfkodlwlenrbgckodkenf

The scale of a model train is 1 1 inch to 13.5 13.5 feet. One of the cars of the model train is 5 5 inches long. What is the length, in feet, of the actual train car?

Answers

Answer:

74.25feet

Step-by-step explanation:

Given the scale of a model train expressed as;

1in = 13.5feet

We are to express length of 5.5in in feet

5.5in = x

Divide both expressions

1/5.5 = 13.5/x

Cross multiply

1×x = 5.5× 13.5

x = 74.25feet

Hence the actual length of the car in feet is 74.25feet

In the oak forest, 60 kids are playing capture the flag.That is 40 percent of all kids in the park.How many kids are in the park?

Answers

Answer:

150 kids

Step-by-step explanation:

If 60 kids is 40% of the total kids, we can add another 60 to get 80% and then half of 60 (30) to bring the total up to 100% of the kids.

150 kids because if you did the percents right then you would get the total and then divide it
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