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
4 and 1 third times 6 <br><br>4 1/3 x 6
Elan Coil [88]
26 is the right answer
3 0
3 years ago
PLEASE HELP I NEED TO FINISH THIS
Akimi4 [234]

Answer:

hhhhhhhhhhhhhhhhhhhhhhhhhiiiiiiiiiiiiiiiiiiiiiii

Step-by-step explanation:ujjj

6 0
3 years ago
Choose the inverse of y = x2 - 10x.
PilotLPTM [1.2K]

=Y2-10Y

We move all terms to the left:

-(Y2-10Y)=0

We add all the numbers together, and all the variables

-(+Y^2-10Y)=0

We get rid of parentheses

-Y^2+10Y=0

We add all the numbers together, and all the variables

-1Y^2+10Y=0

a = -1; b = 10; c = 0;

Δ = b2-4ac

Δ = 102-4·(-1)·0

Δ = 100

The delta value is higher than zero, so the equation has two solutions

We use following formulas to calculate our solutions:

Y1=−b−Δ√2aY2=−b+Δ√2a

Δ‾‾√=100‾‾‾‾√=10

Y1=−b−Δ√2a=−(10)−102∗−1=−20−2=+10

Y2=−b+Δ√2a=−(10)+102∗−1=0−2=0

3 0
3 years ago
Help me with the first one please
natulia [17]
D- 2x-1
plug in a number for x and you'll see
6 0
3 years ago
A cake recipe calls for 4.5 deciliters of milk. How many liters of milk is needed for the recipe?
Bad White [126]
0.45 liters. I need twenty characters
5 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the equation x−2.71=4.12
    15·2 answers
  • The answerand how to do it
    14·1 answer
  • Chloe puts 4 soaps and two bottles of lotion in each gift basket. She has 127 soaps and 85 bottles of lotion. How many gift bask
    11·1 answer
  • 7 break into 9 how many times​
    7·2 answers
  • Make g the subject of the formula w=7-g
    7·1 answer
  • Please please help me with this
    5·1 answer
  • How many grams are there in 3.4 x 1024 atoms of helium (He)?
    10·1 answer
  • Find the value of x.
    15·1 answer
  • Please answer correctly !!!!!!!!!!!! Will make Brianliest !!!!!!!!!!!!!!!!!!!
    5·1 answer
  • Who was Karl Pearson?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!