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
anastassius [24]
3 years ago
12

What is -2x^ -5x + 5 + 0 using quadratic formula

Mathematics
1 answer:
Mashutka [201]3 years ago
6 0

Answer:

x = -5 + √65/2 or

x = -5 - √65/2

Step-by-step explanation:

-2x² - 5x + 5 = 0

2x² + 5x - 5 = 0

Here,

a = 2

b = 5

c = - 5

Now,

Discriminant

<em><u>D = b² - 4ac</u></em>

<em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em>= (5)² - 4(2)(-5)

= 25 + 40

= 65

<u>D = 65 > 0</u>

Then,

x = -b +-√b² - 4ac/2a

x = -5 +-√(5)² - 4(2)(-5)/2(2)

= -5 +-√25 + 40/4

= -5 +-√65/4

= -5 +-√65/2

<em><u>x = -5 + √65/2 or x = -5 - √65/2</u></em>

You might be interested in
Solve the equation using the Zero­Product Property. 6x(3x + 1) = 0
neonofarm [45]
   
\displaystyle  \\ &#10;6x(3x + 1) = 0 \\  \\ &#10;\Longrightarrow ~~ 6x = 0~~\texttt{or}~~3x+1=0 \\  \\ &#10;6x = 0 ~~\Longrightarrow ~~ x_1 =  \frac{0}{6} = \boxed{0} \\  \\ &#10;3x+1 = 0 ~~\Longrightarrow ~~ 3x = -1  ~~\Longrightarrow ~~ x_2 =  \frac{-1}{3} = \boxed{-\frac{1}{3}} \\  \\



4 0
3 years ago
Use the pencil,plot the point (3 1/2, 2 3/4)
kipiarov [429]

Answer:

The diagram of the plotting point \left(3\frac{1}{2},\:2\frac{3}{4}\right)=\left(3.5,\:2.75\right) is attached below.

Step-by-step explanation:

Given the points

\left(3\frac{1}{2},\:2\frac{3}{4}\right)

as

3\frac{1}{2}=\frac{7}{2}=3.5

2\frac{3}{4}=\frac{11}{4}=2.75

so the point can be visualized as:

\left(3\frac{1}{2},\:2\frac{3}{4}\right)=\left(3.5,\:2.75\right)

Now, we can check the point x = 3.5, and determine the corresponding value y = 2.75 and plot the point at the location (x, y) = (3.5, 2.75)

The diagram of the plotting point \left(3\frac{1}{2},\:2\frac{3}{4}\right)=\left(3.5,\:2.75\right) is attached below.

8 0
3 years ago
What is the scale factor from Polygon A to Polygon B?
steposvetlana [31]

Answer:

that scale factor is 2

Step-by-step explanation:

A the side is 2.5

B the same stop as side a but its 5

so 2.5 to 5 is multiply 2

8 0
3 years ago
Read 2 more answers
How do you write 9,800,100 in exponents and expanded form
Leokris [45]
In exponents it could be 3130.51114^2,  213.998224 and 55.95097086
Happy to Help!
5 0
3 years ago
Which one doesn’t belong? Select a graph and give a reason why you selected the shape. Are there any other graphs that do not be
borishaifa [10]

Answer:

Graph 4

Step-by-step explanation:

Graph 4 does not belong. This is as a result of the fact that it Graph 4 has a negative slope(descends) while all other graphs have a positive slope(ascends).

Another way to view it is that the values in Graphs 1, 2 and 3 are directly related while the values in Graph 4 are inversely related.

3 0
3 years ago
Other questions:
  • Find an exact value. <br><br> cosine of negative seven pi divided by twelve
    11·1 answer
  • 7x^3y^3+4-11x^5y^2-3x^2y
    14·1 answer
  • 20 POINTS JUST FOR YOU IF YOU GET IT RIGHT
    9·1 answer
  • Plz answer 17 16 and 18 show work
    9·1 answer
  • Please help me!!!!!!! It's very important!!!!
    15·1 answer
  • What's the three methods ratio
    15·1 answer
  • The average fine for entering a national Forest wilderness without a permit increased from $65 to $78. What rate of increase is
    13·2 answers
  • I am a number. I am the square root of the number you get when you divide 245 by 5. <br> I am
    5·1 answer
  • Helooooooooooooooooooooooooooo
    12·1 answer
  • Can you define f(0, 0) = c for some c that extends f(x, y) to be continuous at (0, 0)? If so, for what value of c? If not, expla
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!