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
NikAS [45]
2 years ago
9

What is one root of this equation? 2x^-4x+9=0

Mathematics
1 answer:
Nutka1998 [239]2 years ago
3 0

9514 1404 393

Answer:

  1 +i√3.5

Step-by-step explanation:

In vertex form, the equation is ...

  2(x² -2x +1) +7 = 0

  2(x -1)² +7 = 0

Then the solutions are ...

  (x -1)² = -7/2

  x = 1 ±i√3.5

One solution is 1+i√3.5.

You might be interested in
A woman is considering two companies from which to rent a truck. triangle truck rental charges ​$20 per day and 35 cents a mile.
Nikitich [7]

You can solve this question using two different methods. One is obviously a hit and trial method in which you keep guessing a number which gives the same amount of total cost. Second is forming two different equations and then solving them using simultaneous methods learnt.

The correct answer is 75 miles. I used the hit and trial method. You can see 20 + 75 * 0.35 = 46.25 and similarly 35 + 75 * 0.15 = 46.25. Hence the same cost.

7 0
2 years ago
Solve for j.<br> 3 + 4<br> 2<br> -3
xeze [42]

Answer:

Hello!

Step-by-step explanation:

How do we solve for j when there is no equation with j in it to solve for j. <em><u>Hope we can help you with this when we get a equation! </u></em>

3 0
3 years ago
The vertex angle of an isosceles triangle measures 42°. A base angle in the triangle has a measure given by
siniylev [52]

Answer:

the value of x=33

the measure of each base angle = 42 ,69,69

Step-by-step explanation:

Bases od isosceles triangles are congruent,so

2(2x+3)=4x+6 (This is the sum ob both anlgles base)

All angles in a triangle add to 180

4x+6 + 42 = 180

4x = 132

x=33

2(33)+3= 69

69+69+42 = 180

5 0
3 years ago
Read 2 more answers
Joseph buys 10 cookies. He eats 7 of them. He wants to know how many cookies he has left.
AysviL [449]

Answer:

subtract 10-7 which is 3 cookies

6 0
2 years ago
Read 2 more answers
How to do this? or get this started?
Ne4ueva [31]
You're right on what you've been doing

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which is the length of the arc MPN expressed in terms of pie?
    6·2 answers
  • PQ=6x+25 and QR = 16-3
    5·1 answer
  • Which is bigger: 17.5% or 1/6
    12·2 answers
  • club a raised $168 by washing 42 cars. club b raised $152 by washing 38 cars. are these fundraising rates equivalent ? explain y
    15·1 answer
  • Simplify 6 to the second power
    5·1 answer
  • Determine algebraically whether the function is even, odd, or neither even nor odd.
    12·1 answer
  • 2/15<br> An_function has a base that is<br> more than 1.
    6·1 answer
  • An investment of ​$100 comma 000 was made by a business club. The investment was split into three parts and lasted for one year.
    5·1 answer
  • lf (x + k) is a factor of f(x), which of the following must be true? F(k)=0 f(-k)=0 a root of f(k) is x=k a y intercept of f(k)
    7·2 answers
  • The gasoline consumption of a bus is 30l/100km and of a car is 9l/100km. To go on a 250 km trip, 30 people can either go by car
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!