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
Volgvan
3 years ago
7

Find the possible values of the constant k if the roots of the quadratic equation

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0

Answer:

{b}^{2}  - 4ac = 0 \\  { ( - k  - 2)}^{2}  - 4(1)(4)  = 0\\  {k}^{2}  + 4k + 4 - 4 = 0 \\ {k}^{2}  + 4k = 0 \\ k(k + 4) = 0 \\  \therefore \: k = 0 \:  or \: k =  - 4

You might be interested in
Can you pls help me with this question thank you
Murljashka [212]

How can expressions be written and evaluated to solve for unknowns in the real world?

Writing expressions requires figuring out which quantity in a situation is unknown, and define a variable to represent that quantitiy.

We look for words in the problem that will help us out what kind of operation to use in a given situation.

Example:

Donna bought 5 chocolate bars, and then ate some. Write an expression to represent how many chocolate bars Donna has left.

If we let the variable c represent the number of chocolates Donna has eaten, then we can write the expression on how many bars Donna has left as: 5 - c

3 0
1 year ago
Help can someone help me find value of X ♡ I would appreciate it ;) ​
kotykmax [81]

Answer:

4x°+16°=7x° – 20°

16°+20°=7x°+4x°

36°=11x°

36/11=x°

X°= 3.27272727

4 0
2 years ago
Read 2 more answers
Ahhh I’m stuck on this one please help
vodomira [7]

Answer:

1.20 ÷ 4 = 0.30 per unit

Please mark as brainliest;)

8 0
2 years ago
Read 2 more answers
Lesson 7 Practice Problems
zlopas [31]

Answer:

6:22,10:110,9:33

Step-by-step explanation:

all the answers are factors of 3 and 11

6 0
3 years ago
HELP ASAP !!! The table shows several points for function j(t).
max2010maxim [7]

Answer:

d on edge

Step-by-step explanation:

its just the table flipped

4 0
2 years ago
Read 2 more answers
Other questions:
  • The measure of an angle is equal to the meausure of its complement. find the degree measure of the angle
    9·1 answer
  • The length of an object is measured as 85.9 centimeters. What is this measurement in scientific notation?
    12·1 answer
  • 18) Which geometric shape can be described as a fixed distance along a line?
    14·1 answer
  • The hens at Mr. Colston's Egg Farm laid 9,663 eggs last month. Mr. Colston put 4 dozen eggs in each packing crate. How many eggs
    7·2 answers
  • Round 425 feet in hours
    13·2 answers
  • What percent of 19.5 is 70.59
    11·2 answers
  • ____CO2 + ___H2O _____C6H12O6 + _____O2
    7·1 answer
  • Rachel has one $1 bill,<br> 3 quarters, and 2 pennies.<br> How much money does<br> Rachel have?
    7·2 answers
  • HELP PLEASE I NEED THIS QUESTION
    5·1 answer
  • Anybody have the correct Answer for this math problem?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!