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
Burka [1]
3 years ago
9

The area of a rectangle is 44m^2, and the length of the rectangle is 3m less than twice the width. Find the dimensions of the re

ctangle.
Mathematics
1 answer:
Ann [662]3 years ago
6 0

Answer:

the length=8

the rectangle=5.5

Step-by-step explanation:

+)convention:

the lengt=a

the width = b => the area of the rectangle = a.b=44m^2 (1)

+) "the length of the rectangle is 3m less than twice the width"

=> 2b-a = 3 (m)

=> a=2b-3

substitute a for (1), we get

the area of the rectangle = a.b = (2b-3).b=44 m^2

=> 2b^2-3b-44=0

=> b=-4 (wrong)

=> b= 5.5 =the width

the lengt = the area of the rectangle/the width=44/5.5=8 m

You might be interested in
What is the sum of the EXTERIOR angles of an octagon?
navik [9.2K]

Answer:

A rule of polygons is that the sum of the exterior angles always equals 360 degrees. Since it is a regular octagon, so each of the interior angles of octagon are equal. ((n-2)*180)/n where n is the number of sides of the polygon.for example in case n=8 for an octagon, so we get:

((8-2)*180)/8 => (6*180)/8 => 1080/8 = 135 degrees. This means that each interior angle of the regular octagon is equal to 135 degrees.  

Each exterior angle is the supplementary angle to the interior angle at the vertex of the polygon, so in this case each exterior angle is equal to 45 degrees. (180 - 135 = 45). Remember that supplementary angles add up to 180 degrees.  

And since there are 8 exterior angles, we multiply 45 degrees * 8 and we get 360 degrees.

This technique works for every polygon, as long as you are asked to take one exterior angle per vertex.

8 0
3 years ago
Read 2 more answers
During its first year, there were 138 volunteers at a community outreach program. Over the next 2 years, there were 156 voluntee
dem82 [27]

Answer:

0.1%

Step-by-step explanation:

138 into a percent=1.38%

156 into a percent=1.56%

175 into a percent=1.75%

1.38-1.56=0.18

1.56-1.75=0.19

0.19-0.18= <u>0.1%</u>

5 0
2 years ago
How many cards he has left​
lisabon 2012 [21]

Answer:

Wrong grammar

Step-by-step explanation:

how many cards DOES HE HAVE LEft

3 0
3 years ago
Joey wrote a book about his favorite Author.
Rasek [7]

Answer: $6000

Step-by-step explanation:

Multiply the cost of the book by the decimal equivalent of 12% (25 x .12).  this equal 3 dollars per book.  2,000 copies of the book were sold, so you would multiply 2000 by 3.  2000 x 3 = 6000

7 0
3 years ago
Who knows answer?<br> Quickly.
Karo-lina-s [1.5K]

Answer:

12 ft^2

Step-by-step explanation:

48 inches needs to be converted to ft

12 inches = 1 ft

48/12 = 4 ft

36 inches needs to be converted to ft

12 inches = 1 ft

36/12 =3 ft

Find the area

4 ft * 3 ft = 12 ft^2

4 0
3 years ago
Read 2 more answers
Other questions:
  • A local hamburger shop sold a combined total of 768 hamburgers and cheeseburgers on Saturday. There were 68 more cheeseburgers s
    5·1 answer
  • I'm not exactly a geek at math and measurements is one of the things I have always messed up at.
    10·1 answer
  • G(x) to g(x)=-[x]+3 what is the domain of g(x)?
    14·1 answer
  • What is blank - 9 =19
    7·2 answers
  • A merchant surveyed 370 people to determine the way they learned about an upcoming sale. The survey showed that 170 learned abou
    14·1 answer
  • For which value of x must the square root <br><br> 97x<br><br> be further simplified
    7·1 answer
  • Tony who is 6 ft tall is looking at a mirror on the ground 12 feet in front of him and he can see the top of the
    9·1 answer
  • If f (X) = 4x + 18, find the value of x so that f (X) = 34.
    7·2 answers
  • FOR 50 POINTSSS PLSSS HELPPP IF U HELP ILL SEND 30 MORE POINTSSS
    6·1 answer
  • Try and answer this one!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!