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
Harrizon [31]
3 years ago
8

Solve –2x2 +3x – 9 = 0. (solving quadratic equation with complex numbers)..

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
4 0
-3+-sqrt9-56/-4
-3+-sqrt-47/-4
-3+-sqrt47i/-4

You might be interested in
Could a set of three vectors in ℝ^4 span all ℝ^4? Explain. What about n vectors in ℝ^m when n is less than m?
Elena-2011 [213]

Answer:

Check the ecplanation

Step-by-step explanation:

A set of three vectors in R^{4} represents a matrix of 3 column vectors, and each vector containing 4 entries (that is, a matrix of 4 rows, and 3 columns).

Let A be that 4x 3 matrix. The columns of A span R^{m}. if and only if A has a pivot position in each row. So, there are at most 3 pivot positions in the matrix A, but the number of rows is 4, therefore, there exist at least one row not having a pivot position. If A does not have a pivot position in at least one row, then the columns of A do not span R^{4}. It implies that the set of 3 vectors of A does not span all of R^{4}.

In general, the set of n vectors in R^{m} represents a matrix of in rows, and n columns (an in x matrix). So, there are at most n pivot positions in the matrix A, but n is less than the number of rows. In therefore, there exist at least one row that does not contain a pivot position.

And, hence the set of n vectors of A does not span all of R^{m}. for n < m

8 0
3 years ago
Which expression represent the distance between the point graphed below
agasfer [191]
The answer is A because when you plug in the points into the distance formula, you will get square root of 17 squared plus 17 squared. Hope this helps!
5 0
3 years ago
2. You throw a softball straight up into the air at a velocity of 30 feet per second. You release the softball at a height of 5.
nadya68 [22]

Answer:

-16t^2+30t+5.8

Step-by-step explanation:

We are given that

Initial velocity=30 ft/s

Initial position=s_0=5.8 ft

We have to write a mathematical model for height of the softball by using the position equation

The position equation on Earth's surface is given by

h(t)=-16t^2+v_0t+s_0

Where v_0= Initial velocity

s_0=Initial position

Substitute the values in the equation then, we get

h(t)=-16t^2+30t+5.8

Hence, the mathematical model for height of the softball is given by

-16t^2+30t+5.8

5 0
3 years ago
What is the area of the composite figure?
s344n2d4d5 [400]

Answer:

the answer is 96 squared feet

7 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!!!!!!!!
serious [3.7K]
Answer: B

the blocks add up to 26
5 0
2 years ago
Read 2 more answers
Other questions:
  • What do you call a person who makes faces all day
    10·2 answers
  • Please please help me!!!!!!!
    10·1 answer
  • The diameter of the base of the cone measures 8units. The height measures 6 units. What is the volume of the cone? 24pi cubic un
    10·1 answer
  • A right cylinder has a radius of 2 units and a height of 5 units. What is the volume of the cylinder? Round to the nearest 10th.
    13·2 answers
  • Find the number that makes the statement 12/18 = ?/9
    6·2 answers
  • Antonia is using the calculator shown to find the value of
    15·2 answers
  • Sara pays $4.50 for 3 pounds of bananas and 2 pounds of oranges. One pound of oranges costs $0.75 more than one pound of bananas
    6·1 answer
  • 5. Karen has 4 1/4 of a yard of fabric with which she intends to make bookmarks. Each bookmark is made from 1/8 of a yard of fab
    8·2 answers
  • My little cuz need help can you help her please
    5·2 answers
  • 1. A decorative rug in an office building has
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!