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
Elan Coil [88]
3 years ago
9

Find the quadratic equation whose roots are 3+- i / 2

Mathematics
1 answer:
Tamiku [17]3 years ago
4 0
(x - root#1) times (x - root#2) = 0 . . . . . This is how to BUILD the quadratic equation.


All the rest is just multiplying out that first line:

(x- (3+i/2)) times (x - (3-i/2)) = 0

x² -x(3-i/2) -x(3+i/2) + (3+i/2)(3-i/2) = 0

x² -3x + ix/2 -3x - ix/2 + 9 -3i/2 + 3i/2 = 0

<u>x² -6x +9 = 0</u>  There it is.  That's your quadratic equation.
You might be interested in
The box plot shows the time it takes you and your classmates to get to school. What is the median time spent traveling to school
Vinvika [58]
B 12 minutes
Because if you look the middle of the box plot the line is at 12
5 0
3 years ago
PLEASE HELP ME PRE CAL/TRIG
miss Akunina [59]

Answer:

A) 60 Degrees

B) 550 Feet

C) 2.5 minutes

Step-by-step explanation:

a) So the wheel has completed one revolution in 10 minutes so lets first divide 100 secs with 10 minutes to calculate the the fraction of revolution

1 min = 60 secs

10 min = 600 secs

100/600 = 1/6

One complete revolution is 360 degrees and 1/6 of 360 degrees will be 60 degrees .

360/6 = 60°

b)  It takes 10 minutes to complete one revolution so if the person is on it for 7 minutes it would be 7/10 of a revolution . The ferris wheel has a diameter of 250 feet so the radius will be 125 feet because it is the half of the diameter and the circumference will be 250 π . To calculate the distance lets multiple the fraction of the revolution which is 7/10 into the circumference \frac{7}{10} * (250 pi) = 550 Feet.

C)It took 10 minutes to travel 250 π now we will use this relation to calculate 200 feet . lets suppose t is for time .

\frac{250pi}{10} =\frac{200}{t}.

After solving this equation as there is only one unknown which is "<em>t</em> "the answer will be 2.5 minutes.

3 0
3 years ago
Is 90 one tenth of hundred
ss7ja [257]
Yes 90 is 1/10 of hundred
6 0
3 years ago
Aurora is planning to participate in an event at her school's field day that requires her to complete tasks at various stations
labwork [276]

Step-by-step explanation:

A. this is a geometric sequence.

according to y-coordinates =>

3, 6, 12, 24

have a T1 = 3 and ratio = 6/3 = 2

B. the formula = Tn = r. T(n-1)

T5 = 2. T4

= 2. 24 = 48 minutes

C. the formula : Tn = T1 . r^(n-1)

T9 = 3. 2^(9-1)

= 3. 2^8

= 3. 256

= 768 munutes

6 0
2 years ago
WILL GIVE BRAINIEST AND 30 POINTS PLEASE ONLY ANSWER WITH AN ANSWER
alexandr402 [8]

Answer:

Step-by-step explanation:

1)13   2)-22 7/9   3)37.6   4)-16   5)1.75   6)-12    7).46   8)4.7   9)-21.42                  u can do ten I have to go to class

8 0
3 years ago
Other questions:
  • A positive real number is 2 less than another. When 4 times the larger is added to the square of the smaller, the result is 49.
    8·1 answer
  • the sum of 4 consecutive even numbers is 92 . Write an equation in which x represents the smallest of these 4 numbers . Then sol
    5·1 answer
  • Help me pleaseeeeeeeeeeeeeeeee
    9·1 answer
  • So I need to know what this equals. Im doing a input output project and I need help, can someone show their work if thats ok? Th
    14·1 answer
  • What is five times seven
    7·2 answers
  • Which of the angles below are vertical angles?
    14·1 answer
  • when a number is multiplied by -3, the result is atleast 15. What is the greatest value the number can have?
    15·1 answer
  • Hey whats 6 x 3 - 1 +69 - 70 devided by 2 and i wanna talk 100 POINTS IF U AWNCER FIRST &gt;w
    7·2 answers
  • Select the correct answer.
    11·2 answers
  • Each student will need 5 rubber bands. There are 8 students. Rubber bands come in bags of 9. How many bags will be needed. How m
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!