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
Cerrena [4.2K]
3 years ago
10

Find the value of k for which the quadratic equation 4x2+kx+3=0 has equal roots.​

Mathematics
1 answer:
charle [14.2K]3 years ago
4 0

Answer:

k = +/-√48

Step-by-step explanation:

4x^2 + kx + 3 = 0

For equal (duplicate) roots the discriminant = 0, so

k^2 - 4*4*3 = 0

k^2 - 48 = 0

k^2 = 48

k = +/-√48

You might be interested in
1 point
kolezko [41]

Answer:

6

Step-by-step explanation:

I pretty sure that its 6 if nt sorry

7 0
3 years ago
Please help,I need it for tomorrow​
Inga [223]

Answer:

<C=26

<B=48

<D=106

<F=42

Step-by-step explanation:

I labeled all the angles to help this make more sense :)

So first we find <C, which is supplementary to <E so just do 180-154=26

Next, we know that <F and <B are equal because they form corresponding angles.

Angles <C <D and <B form a triangle. The three angles of a triangle always equal 180. Now that we know angles <C and <B, we just do 180-26-48=106.

Lastly, to find angle A, we just take 180-106-48=42.

Hope this helps

7 0
2 years ago
What are the solutions of the system? {y=2x+6y=x2+5x+6 ​(−3, 0)​ and (−2, 0) (0, −3) and (6, 0) (−3, 0) and (0, 6) ​(0, 6)​ and
SSSSS [86.1K]
<span>(−3, 0) and (0, 6)

Each of these work in both equations</span>
3 0
3 years ago
Read 2 more answers
Multiply.<br> (d+7)(d-7)<br> Simplify your answer.
romanna [79]

Answer:

\huge\boxed{(d+7)(d-7)=d^2-49}

Step-by-step explanation:

\bold{METHOD\ 1:}\\\\(d+7)(d-7)\qquad|\text{use}\ (a+b)(a-b)=a^2-b^2\\\\=d^2-7^2=d^2-49\\\\\bold{METHOD\ 2:}\\\\(d+7)(d-7)\qquad|\text{use FOIL}\ (a+b)(c+d)=ac+ad+bc+bd\\\\=(d)(d)+(d)(-7)+(7)(d)+(7)(-7)\\\\=d^2-7d+7d-49\qquad|\text{combine like terms}\\\\=d^2+(-7d+7d)-49\\\\=d^2-49

7 0
3 years ago
(7*10^5)^2 simplified in scientific notation
coldgirl [10]
♥ Lets solve this:
(7*10^5)^2(7*10^5)^2
Starting with 10^5
10*10*10*10*10
We get <span>100000
<span>Now we have 7*100000
Solve for that:
We get </span></span><span>700000
Now we have </span><span>700000^2
Solve for that
We get </span><span>490000000000
and in Scientific notation that is
4.9*10^11</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • Two people are sharing equally 7 apples. How many apples will each person receivet
    5·2 answers
  • Each of the 12 cards shown has a number and a color or pattern. Each card is equally likely to be drawn. Find each probability.
    12·1 answer
  • A ladder 40 feet in length rests against a vertical wall. The foot of the ladder is 7 feet from the wall. What angle, θ, does th
    7·2 answers
  • The diameter of Jim’s circular flower bed is 10 feet. What is the area, in square feet, of Jim’s flower bed?
    7·2 answers
  • In a poll of 1000 adults in July​ 2010, 540 of those polled said that schools should ban sugary snacks and soft drinks. Complete
    7·1 answer
  • The sum of 2 numbers is 25. Their product is 150 find them.
    15·2 answers
  • 4. Allison's vegetable garden is in shape of rectangle with an area of 10 feet^2. The width of
    7·1 answer
  • PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!
    14·1 answer
  • 1. Kiki wants to trim a merry go round with lights. If the merry go round has a diameter of 17 feet, how many feet of lights doe
    12·1 answer
  • MATH- Complete QUESTIONS BELOW
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!