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
stellarik [79]
3 years ago
10

Please Help

Mathematics
2 answers:
xxMikexx [17]3 years ago
5 0

<u>Answer:</u>

Option c 4l^2-81

<u>Explanation</u>:

As we have given in the question  

Sum=(2l+9)\times(2l-9)

So by using the formula

(a-b) (a+b) = a^2+ab-ba-b^2

So the equation will become

(a+b)(a-b)=a^2-b^2

So according to question,  we have ,

a = 2l and b = 9

So,

(2l+9)(2l-9)=(4l^2-81)

And required Sum=(4l^2-81)

So the final answer of the question which is required is  Sum=(4l^2-81)

dybincka [34]3 years ago
3 0

Answer:(b). 4I2-81

Step-by-step explanation:(2I+9)(2I-9)

=4I2-18I+18I-81

=4I2-81

You might be interested in
pablo buys 3 servings of jambalaya and 2 drinks for $18 jasmine buys 1 serving and 2 drinks for $9. Write 2 equations based on t
Masja [62]
Pablo buys 3 servings of jambalaya and 2 drinks for $18.00.
Jasmine buys 1 serving of jambalaya a2 drinks for $9.00
Answer by Alan3354(67427) About Me (Show Source):
You can put this solution on YOUR website!
Pablo buys 3 servings of jambalaya and 2 drinks for $18.00.
Jasmine buys 1 serving of jambalaya a2 drinks for $9.00
------------
Thx for letting us know.
Then what happened?
6 0
3 years ago
The price of heating oil rose from $1.10 per gallon to $1.43 per gallon. What is the percent of
ZanzabumX [31]

Answer:

30% increase

Step-by-step explanation:

1.43 - 1.10 = 0.33

0.33 = 30% of 1.10

6 0
3 years ago
Another parking lot with three sections has 80 cars in it. Is it possible for ratio of the number of cars in the first section t
shusha [124]
Yes. 80:160:240 will equal to 1:2:3
4 0
3 years ago
George and his dad are planning to attend the state fair. An adult ticket is $19.00. The price of an adult ticket is one third t
vovikov84 [41]

Answer:

$19 × 3 + $15 + $1=answer? I think

7 0
3 years ago
there are about 290 kids in a school. if there are 14 teachers and 5 subs how many kids would be in a class with teachers and su
Korolek [52]
If there is 290 kids,14 teachers, and 5 subs the you have to do adding
                            There is 309 kids with teachers and subs! Hope it               209                          helps! Happy Halloween!!!
  14
<u>+  5
</u> 309<u>
</u>
7 0
4 years ago
Read 2 more answers
Other questions:
  • Which congruence theorem can be used to prove ΔWXS ≅ ΔYZS?
    7·2 answers
  • Find the equation of a line with each of the following characteristics.
    8·1 answer
  • Hello anyone can do this? Please put answer in points(x,y)
    11·1 answer
  • I Need Help , Help Me Out Please !!!!
    9·1 answer
  • What is the volume of this rectangular prism?
    7·2 answers
  • What is the value of k in the product of powers below?
    7·2 answers
  • F(n)=2n+1<br> g(n)=3n<br> Find f(n)+g(n)
    14·1 answer
  • A language arts test is worth 100 points. There are a total of 26 questions. The spelling questions are worth 2 pts and vocab is
    12·1 answer
  • What are the
    15·1 answer
  • Suppose the manager of a shoe store wants to determine the current percentage of customers who are males. How many customers sho
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!