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
Nady [450]
2 years ago
9

a rectangle has an area that is represented by 9x²-4. the length of the rectangle is 3x-2. what is the width?

Mathematics
1 answer:
PSYCHO15rus [73]2 years ago
6 0

Step-by-step explanation:

the area is

length × width

(3x - 2) × width = 9x² - 4

to find width we could do a real polynomial division or simply recognize the fact that

(a + b)(a - b) = a² - b²

and we see that in our area calculation we are missing the (a + b) factor.

so, width = (3x + 2)

but if you want the division :

9x² - 4 : 3x - 2 = 3x + 2

- 9x² - 6x

-----------------

0 6x - 4

- 6x - 4

----------------------

0 0

again, width = (3x + 2)

You might be interested in
Five workers are hired to seed a field by hand. Each is given a plot which is 6x12 feet in size. What is the total area of the f
Lorico [155]

Answer:

360 feet

Step-by-step explanation:

multiple 6 by 12 to get the area of the individual plot of land given to a single worker.

Then multiply by 5 for all 5 workers getting the same plot of land.

3 0
3 years ago
A sweater that cost $63 and are sold for $54​
Alik [6]

Answer:

not sure what the question is but here are some possible answers

Step-by-step explanation:

cost 63 - sell price 54 = 9 dollars lost per sweater sold

percentage of lose per sweater would be 14%

3 0
3 years ago
If 45 cookies will serve 15 students,how many cookies are needed for 30 students?
blondinia [14]
Simply multiply 45 by 2 and you get your answer which is 90 cookies
3 0
3 years ago
PLEASE HELP!!! I DONT HAVE ENOUGH POINTS TO POST MORE THAN ONCE!
Marat540 [252]

Answer:

-3.

Step-by-step explanation:

In the table, the y value goes down by -4 and then -2, for a total of -6.

We did this over a period of two units (To go from -1 to 1, we add 2).

-6/2 = -3.

-3 is the average rate of change over the interval.

3 0
3 years ago
Read 2 more answers
Alex wrote 103.903 in expanded form as 100+3 x 1+9 x 1/100 +3 x 1/1000. Explain his mistake then tell how to correct it.
Damm [24]
Your mistake was in this part  9 x 1/100 . After the decimal point the place value starts with tenths so you should write 9 x 1/10 .

Place values

Before the decimal point

3 ones = 3 x 1

0 tens = 0 x 10

1 hundreds = 1 x 100

After the decimal point

9 tenths = 9 x 1/10

0 hundredths = 0 x 1/100

3 thousandths= 3 x 1/1000

1 x 100 + 0 x 10 + 3 x 1 + 9 x 1/10 + 0 x 1/100 + 3 x 1/1000

  100     +    0     +   3    +    0.9      +     0        +    0.003

           100         + 3      +          0.9                +     0.003 =  103.903

<span> </span>

8 0
3 years ago
Read 2 more answers
Other questions:
  • What would I have to do here? Somebody please help me! (Look at the bottom problem not the top)
    9·1 answer
  • Using the order of operations rule, solve the following: 12 ÷ 2 + 4 – 2 × 3 = ?
    9·2 answers
  • 8 • 10 exponent 9 ÷ 1.2 • 10 exponent 6
    13·1 answer
  • What are the factors of 5x2 + 39x − 8?
    5·1 answer
  • HELP NEED HELP PLEASE
    14·1 answer
  • Salma made 6 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for all 6 necklaces
    6·2 answers
  • Please help with this math
    9·2 answers
  • A cylindrical well has a radius of 8 feet and a height of 13 feet. What is the volume of the well? Use 3.14 for pi. Round your a
    13·2 answers
  • What does x equal? 1/2x-8=4x-15
    9·2 answers
  • Which function represents this graph?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!