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
aev [14]
3 years ago
8

For what values of K does x2+kx+9=0

Mathematics
1 answer:
Airida [17]3 years ago
4 0

Answer:

k = 6

Step-by-step explanation:

x {}^{2}  + kx + 9 = 0

here,

a = 1,

b = k

c = 9

now,

D = b {}^{2}  - 4ac

k {}^{2}  - 4(1)(9) = 0 \\   k {}^{2}  - 36 = 0 \\ k {}^{2}  = 36 \\ k = 6

You might be interested in
Round 3,854,927 to the hundredths place
Tamiku [17]

Answer: 3854927

Step-by-step explanation: Becuase I smart

6 0
3 years ago
Please help me :> i would love that ! :))
vazorg [7]

Answer:

The total is 90%

Step-by-step explanation:

Hope this helps! ^^

4 0
3 years ago
Jocelyn said that the triangle below is not a right triangle. Her work is shown below. Explain what she did wrong and show Jocel
AfilCa [17]

Complete Question:

Jocelyn said that the triangle below is not a right triangle. Her work is shown below. Explain what she did wrong, and show Jocelyn the correct solution.

We need to check if 27² + 45² = 36² is a true statement. The left side of the equation is equal to 2,754. The right side of the equation is equal to 1,296. That means 272 + 452 = 362 is not true, and the triangle shown is not a right triangle

Answer/Step-by-step explanation:

Jocelyn used a wrong equation and statement.

Here's what she should have stated and done.

Using the converse of Pythagorean Theorem, which says that a triangle with sides a, b, and c is a right triangle if it satisfy the statement: a² + b² = c².

Where, c is the hypotenuse which is the longest leg. While a and b are the side lengths of the other two legs.

Therefore, in this case,

c = 45

b = 27

a = 36

Thus, what we need to check to be true would be:

36² + 27² = 45² (this is where Jocelyn made a mistake. Jocelyn wrote 27² + 45² = 36² rather)

Let's check if it's true.

2,025 = 2,025 (this is true)

Therefore, the triangle is a right triangle.

8 0
2 years ago
Does the given matrix, A, have an inverse? If it does, what is A-1?
ololo11 [35]

Answer:

yes he does

Step-by-step explanation:

6 0
3 years ago
Please can someone help with rearranging formulae? Will mark brainliest!
3241004551 [841]

Answer:

look at the picture ..........

6 0
2 years ago
Other questions:
  • Why do you think rates are usually written as unit rates
    6·1 answer
  • Name two integers whose product is negative.
    15·1 answer
  • A right triangle has a leg measurement of 15 mm and a hypotenuse of 18 mm. What is the measurement of the other leg, rounded to
    13·1 answer
  • Suppose that each time Diana Taurasi takes a 3-point shot, she has a 37% probability of success, independent of all other attemp
    13·1 answer
  • Help plz plz plz plz plz plz plz
    13·1 answer
  • Examine the diagram. What are the measures of angle 1 and angle 2?
    12·1 answer
  • The scale model of a rectangular garden is 1.5 ft by 4 ft. The scale model is enlarded by a scale factor of 7 to create the actu
    7·1 answer
  • PLEASE HELP OMGGGGGG TYSMM
    13·2 answers
  • After 4 minutes of reading, Aaron was on page 14 of his book. After 8 minutes he was on page 20. Which equation models the page
    11·1 answer
  • Solve the inequality. Graph the solution. y-19 < 51
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!