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
prohojiy [21]
3 years ago
7

What is the value of k?

Mathematics
1 answer:
yawa3891 [41]3 years ago
7 0

Answer:

<h2>             k = 3</h2>

Step-by-step explanation:

The vertex is (d, e)

for quadratic function: f(x) = ax² + bx + c  we have:

d = -b/a    and    d = (x₁ + x₂)/2  

a = 1,   b = k,   x₁ = -4,    x₂=-2      

so:

d = -b/a = -k/1 = -k   and   d = (x₁ + x₂)/2 = (-4-2)/2 = -3

-k = -3

k = 3

You might be interested in
Latrell bought 4 bags of powdered sugar. He got a total of 5 1/2 cups of sugar. How many cups of sugar were in each bag?
Stels [109]
So all 4 bags of sugar yielded 5 and 1/2 cups..... well.. how many in each one?  well, let's split the 5 and 1/2 evenly in 4 pieces.

\bf \stackrel{mixed}{5}\frac{1}{2}\implies \cfrac{5\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{11}{2}}\\\\&#10;-------------------------------\\\\&#10;\cfrac{\quad\frac{11}{2} \quad }{4}\implies \cfrac{\quad\frac{11}{2} \quad }{\frac{4}{1}}\implies \cfrac{11}{2}\cdot \cfrac{1}{4}\implies \cfrac{11}{8}\implies \stackrel{cups}{1\frac{3}{8}&#10;}
5 0
3 years ago
WHO EVER ANSWERS FIRST GETS BRAINLIEST <br><br> What is the greatest common factor of 33 and 40?
Eva8 [605]

Answer: 1 is the greatest number that 33 and 40 divides into.

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Which explains whether sophia is correct
IgorLugansk [536]

Answer:

uhh where's the rest of the question hombre

7 0
2 years ago
Smart math people want brainliest?
Dmitry [639]

Answer:

2.351 or 2.4

Step-by-step explanation:

8 0
3 years ago
25 students are asked to line up in lines of 5 students. How many lines will there be?
Colt1911 [192]

Answer:

5 lines

Step-by-step explanation:

5 times 5 is 25 so 25 divided by 5 is 5 therefor your answer is 5

3 0
3 years ago
Read 2 more answers
Other questions:
  • Between which pair of numbers is the exact product of 379 and 8.
    6·2 answers
  • A.​ 6√ ​<br><br> B. −6√ ​<br><br> C. −116√<br><br> D. −26√
    6·2 answers
  • The radius of circle C is 6 units and the measure of central angle ACB is StartFraction pi Over 2 EndFraction radians. What is t
    12·2 answers
  • Identify and circle all of the factors of<br> 3x2 - 9x + 6
    14·1 answer
  • Combine like terms.<br> 2y2 – 5+1 + 2y2 – 6y2 – 3 – 4y<br> ASAP<br> someone help please
    6·2 answers
  • steve has 500 more marbles than richard at first. he gives 300 marbles to richard. who has more marbles now, and by how many?
    10·2 answers
  • HELP ASAP WITH DOMAIN AND RAGE. WILL GIVE BRAINLIEST!
    6·1 answer
  • Help please I’m on my last question???
    9·1 answer
  • I’m giving brainliest !!!
    8·1 answer
  • Question 3 of 10 A Assume EFG = JKL. If mLJ = 90°, mL K = 26°, and m&lt; L = 64°, what is the measure of &lt; E?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!