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
irakobra [83]
2 years ago
9

I really need help quick

Mathematics
1 answer:
Natali [406]2 years ago
5 0

Answer:

\sf x=2+\sqrt{6},\:x=2-\sqrt{6}

Explanation:

\sf y = x^2 -4x

given that y = 2

\sf x^2 -4x = 2

\sf x^2 -4x -2 = 0

using quadratic formula:

\sf x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{2a}  \    \ \ when  \   ax^2 + bx + c = 0

\rightarrow \sf x_{1,\:2}=\dfrac{-\left(-4\right)\pm \sqrt{\left(-4\right)^2-4\cdot \:1\cdot \left(-2\right)}}{2\cdot \:1}

\rightarrow \sf x_1=\dfrac{-\left(-4\right)+2\sqrt{6}}{2\cdot \:1},\:x_2=\dfrac{-\left(-4\right)-2\sqrt{6}}{2\cdot \:1}

\rightarrow \sf x=2+\sqrt{6},\:x=2-\sqrt{6}

in decimals:

\rightarrow \sf x=4.45 , \ -0.45

You might be interested in
6. Richy has a bag of marbles. He gave 5/12 of
Tems11 [23]

Answer:

7/12

Step-by-step explanation:

12/12-5/12=7/12

7 0
2 years ago
Need help with math please
Tamiku [17]
The answer is c
(0,8) is the y intercept so the +.. is +8
then pug in 4 to x and find which one equal 0
3 0
2 years ago
The points (-2,4), (0,8), (1,10), and (3,14) are on a line. Which of the following statements are true?
irakobra [83]

Answer: y = 2x+8

Check out this graph I supplied you with!

5 0
3 years ago
There are 50 tickets in a raffle bag, and 10 of the tickets belong to Gary. A ticket is chosen at random, and the ticket owner's
IgorC [24]
1/25 or .04% would be the correct answer

4 0
3 years ago
Using the defects method, which of these relationships represents the Law of Cosines if the measure of the included angle betwee
horrorfan [7]
Asked and answered elsewhere.
brainly.com/question/1410592

_____
Google doesn't recognize the terms "defects method" except in association with various postings of this same problem.
4 0
3 years ago
Other questions:
  • 7 divide 789 show your work
    12·1 answer
  • HELP ASAP WILL MARK THE BRAINLIEST!
    7·1 answer
  • Solve the equation -6 + 6n = 42 for n
    9·2 answers
  • Does anyone know what 125 divided by 27​
    13·2 answers
  • In the era just prior to the Reformation, which of the following is true about the Catholic Church?
    8·2 answers
  • A carpenter can install 8 sheets of drywall in 10 minutes. At this rate, how long does it take to install one sheet of drywall?
    15·2 answers
  • What is the simplified expression for 3 to the power of negative 4 multiplied by 2 to the power of 3 multiplied by 3 to the powe
    13·2 answers
  • Pls help me I need help ASAP and PLS SHOW YOUR WORK because I don’t understand this
    5·1 answer
  • Question 6 (1 point)
    6·1 answer
  • A straight angle always measures _______________ degrees<br> please help
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!