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
kow [346]
3 years ago
9

3. Use completing square method to evaluate 6x2 + 11x +3 = 0​

Mathematics
2 answers:
Jobisdone [24]3 years ago
6 0

Answer:

x=-1/3 or x = -3/2

Step-by-step explanation:

6x²+11x+3=0

divide through by 6

x² +11x/6 + 3/6 =0

collect like terms that is those with x should be left on one side nd the one without x should be on the other side

x² +11x/6 = -1/2

add the square of the half of the co efficient of B i.e 11x/6 to both sides

(x+11/12)² = 121/144 -1/2

(x+11/12)² = 121-72/144

square root of both sides

x+11/12 =+or - √49/144

x= -11/12 ± 7/12

x= -1/3 or x= -3/2

allochka39001 [22]3 years ago
5 0

Answer:

-b+or-

- b -  +  \sqrt{a {}^{2} - 4ac  }  \div 2a

Nearly x=-1.416

Or x=-0.416

You might be interested in
Find the equation, (f(x) = a(x-h)2+ k), for a parabola containing point (-1,0) and having (-3, 4) as a vertex. What is the stand
kirill115 [55]
(h;\ k)\ -\ \text{the coordinates of the vertex}

\text{therefore we have:}\ f(x)=a(x+3)^2+4

\text{a parabola that passes through the point (-1; 0)}

\text{substitute the coordinates of the poin (-1; 0) to the equation}

(-1;\ 0)\to x=-1;\ y=0\\\\0=a(-1+3)^2+4\\\\0=a(2)^2+4\\\\0=4a+4\ \ \ |-4\\\\4a=-4\ \ \ |:4\\\\a=-1

f(x)=-(x+3)^2+4=-(x^2+2\cdot x\cdot3+3^2)+4=-(x^2+6x+9)+4\\\\=-x^2-6x-9+4=-x^2-6x-5

5 0
3 years ago
Work out the perimiter of a semi circle with radius of 3 <br> Give your answer in term of pi
sweet [91]

Answer:

15.425 cm is it without terms of pie

Step-by-step explanation:

you need to put it into terms of pie

5 0
4 years ago
Read 2 more answers
5(3−x)&gt;−2x+6 PLS ANSWER ASAP WILL GIVE BRAINLIEST
rusak2 [61]

Answer:

x<3

Step-by-step explanation:

5(3-x)>-2x+6

15-5x>-2x+6

-5x>-2x-9

-3x>-9

x<3

Hope this helps

8 0
3 years ago
Read 2 more answers
Use the rules of exponents to evaluate or simplify. Write without negative exponents.
Zielflug [23.3K]

Answer:

  • 2

Step-by-step explanation:

  • (\frac{1}{4})^{-1/2} =
  • (\frac{1}{\frac{1}{4} })^{1/2} =
  • 4^{1/2} =
  • 2^{2*1/2} =
  • 2^{1} =
  • 2

<u>Properties used</u>

  • a^{-b}  = (\frac{1}{a} )^b
  • (a^{b} )^c = a^{bc}
3 0
3 years ago
Eleven more than four times a number is 23
goblinko [34]
3 is the original number
You have to do reverse operations
23-11=12
12/4=3
7 0
3 years ago
Other questions:
  • A box contains 14 candy bars of equal weight the weight of the empty box is 10 ounces and the total weight of the box and the ca
    14·1 answer
  • Help pls<br> 20pts to best answer
    14·1 answer
  • I HAVE BEEN TRYING TO GET THIS ANSWER AND NO ONE WILL HELP ME:( PLEASE HELP!! GREATLY APPRECIATED!
    6·1 answer
  • Movie tickets cost $9.95 for adults and $6.75 for students. The Ryder family buys 2 adult tickets, 3 student tickets, and then p
    7·2 answers
  • Does the word pod have rotational symmetry? Yes or no. Please explain.
    6·1 answer
  • Have to find x, y, and z,, someone help pls !!
    15·1 answer
  • What is your dream job?
    8·2 answers
  • GEOMETRY PLEASE HELP! THIS IS IMPORTANT AND I DON'T UNDERSTAND
    14·1 answer
  • Identify the type of function represented by f(x)= 3(1.5)*.
    6·1 answer
  • Evaluate. 33 + ( 2 3 )2 A) 9 4 9 B) 9 2 3 C) 27 2 3 D) 27 4 9
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!