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
aivan3 [116]
3 years ago
13

X^2 + 5x = quadratic equation =​

Mathematics
1 answer:
timama [110]3 years ago
4 0

Hi there!

The question gives us the quadratic equation , and it tells us to solve it using the quadratic formula, which goes as . However, we must first find the values of a, b, and c. The official quadratic equation goes as , which matches the format of the given quadratic equation. Hence, the value of a would be 1, the value of b would be 5, and the value of c would be 3. Now, just plug it back into the quadratic equation and simplify to get the zeros of the equation. 

x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}  

x = \frac{-(5) \pm \sqrt{(5)^2 - 4(1)(3)} }{2(1)}  

x = \frac{-5 \pm \sqrt{25 - 12} }{2}  

x = \frac{-5 \pm \sqrt{13} }{2}  

x = \frac{-5 \pm 3.61 }{2}  

x = \frac{-5 + 3.61 }{2}, x = \frac{-5 - 3.61 }{2}

x=-0.695 \ \textgreater \ \ \textgreater \  -0.7, x= -4.305 \ \textgreater \ \ \textgreater \ x=-4.31

Therefore, the solutions to the quadratic equation  are x = -0.7 and x = -4.31. Hope this helped and have a phenomenal day!

Your answer is 4.31

You might be interested in
Joanna has 70 beads. She uses 8 beads for each bracelet. She makes as many bracelets as possible. How many beads will Joanna hav
gogolik [260]
She will have 6 braces left over since 8x8=64 and 70-64=6
6 0
3 years ago
Read 2 more answers
Plz help plz I am already failing I dont want to fail more
Gnom [1K]

Answer:

B is the closet to pi hsiebfjwjgsbe9fbe

7 0
2 years ago
Determine the value of Y.
aleksandr82 [10.1K]

Answer:

y=10°

Step-by-step explanation:

Here,

→(3x+18)°=(5x-4)°

→18°+4°=5x-3x

→22°=2x

→x=11°

Also,

3(4y+3)°+5x-4°=180°[The sum of the linear pair is 180°]

12y+9°+5x-4°=180°

12y+5°+5×11°=180°

12y+5°+55°=180°

12y=180°-60°

12y=120°

y=120°/12

y=10°

7 0
1 year ago
Read 2 more answers
Match solutions and differential equations. Note: Each equation may have more than one solution. Select all that apply. (a) 7y''
Nonamiya [84]

Answer:

a-e^x,e^{-x}

b-x^{-2}

c-x^3

Step-by-step explanation:

a.7 y''-7 y =0

Auxillary equation

D^2-1=0

(D-1)(D+1)=0

D=1,-1

Then , the solution of given differential equation

y=e^x,y=e^{-x}

2.7x^2y''+14xy'-14 y=0

Y=y=x^3

y=3x^2

y''=6x

Substitute in the given differential equation

42x^3+42x^3-14x^3\neq 0

Hence, x^3 is not a solution of given differential equation

e^x,e^{-x} are also not a solution of given differential equation.

y=x^{-2}

y'=-2x^{-3}

y''=6x^{-4}

Substitute the values in the differential equation

7x^2(6x^{-4})+14x(-2x^{-3})-14 x^{-2}

=42x^{-2}-28x^{-2}-14x^{-2}=0

Hence, x^{-2} is a solution of given differential equation.

c.7x^2y''-42y=0

y=x^3

y'=3x^2

y''=6x

Substitute the values in the differential equation

42x^3-42x^3=0

Hence, x^3 is a solution of given differential equation.

a-e^x,e^{-x}

b-x^{-2}

c-x^3

6 0
3 years ago
Read 2 more answers
Anyone know the answerss ill cashapp 5 dollars or brainlist you u choose but helpp meee​
ludmilkaskok [199]

Answer: Spain, France, Britain

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • A furnace used 40% of the fuel in its tank in the month of march and then used 25% of the remaining fuel in the month of april.
    11·1 answer
  • ‼️‼️‼️‼️‼️Can someone please find the kindness in their heart and please help me? It’s been 5 hours and no one has helped. I rea
    10·2 answers
  • Please help fast!!! I need help with question attached!!
    11·1 answer
  • 145 pounds to 132 pounds
    15·2 answers
  • Oceanside Bike rental shop charges 11 dollars plus 8 dollars an hour for renting a bike Tom paid 51 dollars to rent a bike how m
    12·2 answers
  • 60 over 100 converted to simplest form
    11·2 answers
  • Can anyone please help with this??
    13·1 answer
  • Help!!! Please 20 points!!
    9·1 answer
  • PLSSSSS HELPPPP ME ITS MATHH PLSSSSS 20 POINTSSS PLSS
    5·1 answer
  • Express 512 as a power of 2.<br> a) 2*8*<br> b) 27*7*<br> c)29*9*<br> d) 210*10*
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!