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
Vika [28.1K]
3 years ago
11

Factorize 9(a+1)^2-81​

Mathematics
1 answer:
Lunna [17]3 years ago
5 0

Answer:9a^2+18a-72

Step-by-step explanation:

9(a+1)^2-81

9(a+1)(a+1)-81

Open brackets

9(a^2+a+a+1)-81

9(a^2+2a+1)-81

9a^2+18a+9-81

9a^2+18a-72

You might be interested in
Eu preciso de ajuda pfvr:(
belka [17]
I’m not a true percent sure but I think it’s C
8 0
3 years ago
The nth term of sequence is n2 + 20
saw5 [17]

Answer:

First three terms:

22,24,26

There are 15 terms in the sequence that are 50 or less, yet only 14 if its just less than 50.

7 0
3 years ago
Read 2 more answers
A Web music store offers two versions of a popular song. The size of the standard version is
sashaice [31]
Let s be standard and h be high-quality versions of the song.
To figure this out, let's make a system of equations: 
2.5s + 4.5h = 5740
h = 4s
First substitute the second equation into the first for h.
2.5s + 18s =5740
Then combine like terms.
20.5s = 5740
Lastly, divide each side by 20.5 to get the number of standard downloads: 
s = 280
Hope this helps!
8 0
3 years ago
I need help with letter B, find the area
Ahat [919]

Answer:

58

Step-by-step explanation:

6*8+2*2+3*2=58

7 0
3 years ago
Determine if the relation is a function. {(0,0), (1,3), (2,5), (3,9)}
kkurt [141]
The relation is a function
5 0
3 years ago
Other questions:
  • The formula s= sqrt SA/6
    9·1 answer
  • Solve for x: 3x - 5 = 2x + 6​
    12·2 answers
  • HELP QUICK PLSSS !!
    7·1 answer
  • Which of the binomials below is a factor of this trinomial ?<br> 6x^2+30x+36
    5·2 answers
  • Is the equation y=(x-2)³ a function?
    5·1 answer
  • Triangle XYZ has been dilated to form triangle LMN. What is the least amount of information needed to prove the two triangles ar
    15·2 answers
  • If 25 new born babies are randomly selected, what is the probability that the 25 babies are born that their mean weigh less than
    5·2 answers
  • Using radicals, write an equivalent expression for the expression y1/2
    9·1 answer
  • If Destini runs 4 km in 18 minutes. Which proportion could be used to find how many minutes it would take her to run 16 km?
    7·1 answer
  • What is the approximate length of arc s on the circle below? Use 3.14 for pi . Round
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!