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
jasenka [17]
3 years ago
5

What value(s) of x make the equation x2 - 18x + 81 = 0 true?

Mathematics
2 answers:
Sergeu [11.5K]3 years ago
8 0

Answer:

9

Step-by-step explanation:

mel-nik [20]3 years ago
5 0
We can factorise this to get (x-9)(x-9). To find the value, each bracket needs to equal 0, so the value would be x=9
You might be interested in
-x=9 pls help I’m behind
olchik [2.2K]

Answer: x = 10

Step-by-step explanation:

-x = 9

Whenever there's a negative number you always know there's a 1 in front of the x

-1x =9

+1 +1

equals x= 10

6 0
3 years ago
Use the method of completing the square to transform the quadratic equation into the equation form (x + p)2 = q. 3 + x - 3x2 = 9
Triss [41]
To <span>transform the quadratic equation into the equation form (x + p)2 = q we shall proceed as follows:
3+x-3x^2=9
putting like terms together we have:
-3x^2+x=6
dividing through by -3 we get:
x^2-x/3=-2
but
c=(b/2a)^2
c=(-1/6)^2=1/36
thus the expression will be:
x^2-x/3+1/36=-2+1/36
1/36(6x-1)</span>²=-71/36

the answer is:
1/36(6x-1)²=-71/36
7 0
3 years ago
20.) Using the cross multiplication method, which of the following is the solution to 18/6x = 4/(x+3)?
Likurg_2 [28]

Answer:

B. 9

Step-by-step explanation:

7 0
3 years ago
a carpenter sands 1/2 of a dresser in 3/4 of an hour. At this rate, how long does it take the carpenter to sand 1 dresser​
KengaRu [80]

Answer:

hour and a half

Step-by-step explanation:

7 0
3 years ago
What are the solutions to the following system?
Dima020 [189]
The answer is
2x+(3x+4)=6
4 0
1 year ago
Other questions:
  • Is y = 2x - 3 a function
    10·1 answer
  • At noon joyce drove to the lake at 30 mph, but she made the long walk back home at 4 mph. how many hours did she walk if she was
    14·1 answer
  • PLEASE HELP QUICK
    12·1 answer
  • Whats the answer to y=-6-8+-4​
    13·1 answer
  • How many ways to make 80 cent
    12·1 answer
  • How do I do this? It is an algebraic expression I believe and
    9·1 answer
  • Layla emptied out her change jar to buy a new binder for school. She found 147 coins consisting of dimes and nickels that totale
    7·1 answer
  • Jett is 6 feet 2 inches tall. How tall is he in inches ?
    15·1 answer
  • X=5<br> 2x-3y=4<br> How do I solve this equation
    10·1 answer
  • What is the exact value of <img src="https://tex.z-dn.net/?f=tan%5Cfrac%7B11%5Cpi%20%7D%7B12%7D" id="TexFormula1" title="tan\fra
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!