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
Aleks04 [339]
3 years ago
14

A rectangle's length is three times its width. Let w denote the rectangle's width. What polynomial represents the rectangle's ar

ea?
Mathematics
1 answer:
Ket [755]3 years ago
7 0
<span>A = l x w
Since 
l = 3w

Substitute the l with 3w
The formula will be

A = 3w + w
A = 4w

An example:
The given known values are: Length of 4 cm Width is unknown Perimeter is 34 cm Find the dimensions of the rectangle.   Since the geometric formula for perimeter is: </span>
P= 2 (l + w) 
L = 2w – 4 cm 
W =?   
Derivation and solution: 
34 = 2 (2w - 4) + 2w <span>
34 =  4w – 8 + 2w</span> 
42 = 6w 42/6 = w 
W = 7 cm   

34 = 2l + 2(7) 
34 = 2l + 14 
2l = 34 – 14 
2l = 20 
L = 20/2 
L = 10 cm<span> <span>
</span></span>

You might be interested in
in a small machine shop, eight 5-gallon drums of oil are on hand. if 2 gallons are used each day and the owner wants a 30-day su
zavuch27 [327]
If 2 gallons of oil are used a day, than he will need 60 gallons of oil, because 30x2=60. For 60 gallons of oil, you would have to have 12 drums because 60÷5=12. Because there is already 8 drums of oil, there would already be 40 gallons because 8x5=40. If the owner already had 40 gallons of oil, they would only have to get 20 more gallons because 60-40=20. That would be 4 drums because 20÷5=4. The owner would have to order 4 more drums of oil.
4 0
3 years ago
Someone plssss helpppp
Ksju [112]
Is this math? or English
4 0
2 years ago
50 point question. Please help my math grade is way to low
ycow [4]
1/4g = 1/2h 1/2g = 1h 2h = 1g 3h = 1 1/5 g
Hope this helps + hopes this is correct
7 0
2 years ago
Read 2 more answers
MANY POINTS! PLEASE HELP
Vlad1618 [11]

Answer:

B.  51.7699^2

Step-by-step explanation:

Last 2 wrong because it is positive.

101.... is not the definite integral for the curve

51... purrfecto

3 0
1 year ago
Simplify:<br><br>7j-6k-5j+4k<br><br>also what is 30% of 520
alukav5142 [94]
The first one simplified is 2j-2k 30% of 520 is 156
7 0
3 years ago
Other questions:
  • you bake a dessert in the baking pan shown. you cut the dessert into cube shaped pieces of equal size. each piece has a volume o
    11·1 answer
  • Cain has 40 eggs. He divides all the eggs and places an equal number into 10 small containers. How many eggs are in each contain
    13·2 answers
  • Plz help me I am struggling
    15·2 answers
  • How many milliliters are in a liter?<br> 10<br> 1,000<br> 0.001<br> 0.01
    8·1 answer
  • Simplify
    5·2 answers
  • Simplifying fractons
    11·2 answers
  • I forgot how to solve multistep equations. Let me explain, I forgot how to solve the equations that are like x + 36 = 4x, I don'
    5·1 answer
  • An architect is designing a new library. The library’s floor plan is a rectangle divided into a bookshelf space with bookshelves
    7·1 answer
  • N.app.edmentum.com/courseware delivery/ua/49105800/848595622/aHROCHM6Ly9m MSShCHAUZWRIZW50dWOUY291L 2017 Juzitawid Niche
    10·1 answer
  • I needhelp please :(
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!