1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gala2k [10]
3 years ago
9

Solve this as fast as possible please

Mathematics
1 answer:
pav-90 [236]3 years ago
5 0

Answer:

X is equal to 7.

3*7+11=32

X=7

You might be interested in
Find the real numbers x and y if -3+ix^2y and x^2+y+4i are conjugate of each other. Pls solve with the steps
Firdavs [7]
ANSWER
x = ±1 and y = -4.
Either x = +1 or x = -1 will work

EXPLANATION
If -3 + ix²y and x² + y + 4i are complex conjugates, then one of them can be written in the form a + bi and the other in the form a - bi. In other words, between conjugates, the imaginary parts are same in absolute value but different in sign (b and -b). The real parts are the same

For -3 + ix²y
⇒ real part: -3
⇒ imaginary part: x²y

For x² + y + 4i
⇒ real part: x² + y (since x, y are real numbers)
⇒ imaginary part: 4

Therefore, for the two expressions to be conjugates, we must satisfy the two conditions. 

Condition 1: Imaginary parts are same in absolute value but different in sign. We can set the imaginary part of -3 + ix²y to be the negative imaginary part of x² + y + 4i so that the 

   x²y = -4 ... (I)

Condition 2: Real parts are the same

   x² + y = -3 ... (II)

We have a system of equations since both conditions must be satisfied

   x²y = -4 ... (I)
   x² + y = -3 ... (II)

We can rearrange equation (II) so that we have

   y = -3 - x² ... (II)

Substituting into equation (I)

   x²y = -4 ... (I)
   x²(-3 - x²) = -4
   -3x² - x⁴ = -4
   x⁴ + 3x² - 4 = 0
   (x² + 4)(x² - 1) = 0
   (x² + 4)(x-1)(x+1) = 0

Therefore, x = ±1.
Leave alone (x² + 4) as it gives no real solutions.

Solve for y:

   y = -3 - x² ... (II)
   y = -3 - (±1)²
   y = -3 - 1
   y = -4

So x = ±1 and y = -4. We can confirm this results in conjugates by substituting into the expressions:

   -3 + ix²y 
   = -3 + i(±1)²(-4)
   = -3 - 4i

   x² + y + 4i
   = (±1)² - 4 + 4i
   = 1 - 4 + 4i
   = -3 + 4i

They result in conjugates
4 0
3 years ago
Read 2 more answers
Best answer gets brainiest. Mackenzie went to the mall with her mom. First, they spent 15 minutes in the shoe store. Then they s
Naddika [18.5K]

Answer:

They started at 4:45 pm

Step-by-step explanation:

Time spend at the mall:

15 minutes in the shoe store

1 hour shopping for a dress

30 minutes eating

Total 1 hour 45 minutes

x + 1 hour 45 minutes = 6:30

Subtract 1 hours

5 : 30 pm

Subtract 45 minutes

4 :45 pm

They started at 4:45 pm

8 0
2 years ago
What is the correct answer?
garik1379 [7]

Answer:

why is it upside down

Step-by-step explanation:

3 0
2 years ago
Pls help me! (question is in the picture)
Savatey [412]

Answer:

getting the wrong answer or not using the correct symbols

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Which expression is equivalent to 16a - 18b + 20a
vaieri [72.5K]
(16a+20a)-18b
=36a-18b
8 0
3 years ago
Other questions:
  • A new car is purchased for 22200 dollars. The value of the car depreciates at 14.75% per year. To the nearest year, how long wil
    7·2 answers
  • Explain how you used the bar model in exercise 2 to find the problem
    9·1 answer
  • A square has side length of 10 units. find the approximate length of the diagonal.
    15·1 answer
  • Need help answers please
    6·1 answer
  • Demarco wants to find the angle measures of this parallelogram. He knows that the first step is to find the value of x. Which of
    6·1 answer
  • What is the value of the digit in the tenths place of 0.77
    9·1 answer
  • An animal shelter has 36 kittens and 12 puppies available for adoption. What is ration of puppies to kittens?
    9·2 answers
  • What is the solution to the equation 37x = 9x + 4?<br><br> -7<br><br> -1/7<br><br> 1/7<br><br> 7
    10·2 answers
  • Sau 18 tháng, số tiền nợ cả gốc lẫn lãi phải trả là $5200. Số tiền gốc là bao nhiêu nếu lãi suất đơn là 8%/năm?
    14·1 answer
  • HELP HELP HELP ASAP PLEASE HELP!!!!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!