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
Andrej [43]
2 years ago
6

the length of a rectangle is 4 more than 3 times the width. If the perimeter of the rectangle is 18.4cm, what is the area of the

rectangle
Mathematics
2 answers:
antoniya [11.8K]2 years ago
6 0

Answer:

A = 10.27cm²

Step-by-step explanation:

Let's represent the width as x,

therefore since the length is 4 more than 3 times the width, it can be represent as 3x + 4,   Perimeter = 18.4cm

Perimeter of a rectangle = 2(L + B)

18.4= 2(3x+4+x)\\18.4= 6x+8+2x\\18.4-8=6x+2x\\10.4=8x\\x=\frac{10.4}{8}\\x=1.3

width = 1.3cm

Length = 3x + 4 = 3*1.3 + 4 = 7.9cm

Area of a rectangle = length x width

A = 7.9 * 1.3 = 10.27cm²

Alexandra [31]2 years ago
3 0
Let the width be w
Length = 3w +4
Perimeter = 2*(l+b)
2*(3w+4+w)=18.4
2*(4w+4)=18.4
8w+8=18.4
8w=18.4- 8
8w= 10.4
W=10.4/8
w= 1.3 cm
L=3*1.3+4
=3.9+4
l=7.9


Area = length * width
= 7.9*1.3
= 10.27 square cm
You might be interested in
If f(x) = x2 -1, what is the equation for f–1(x)?
professor190 [17]
Evaluate the function would be= x^2-f-x
3 0
3 years ago
What is the mapping rule for a 45 degree rotation?
sleet_krkn [62]

Step-by-step explanation:

Imagine a line segment on a coordinate plane that rotates around the origin like a clock hand. If it travels 45° (or any positive degree angle), it will travel in a counterclockwise direction. If it rotates -45° degrees (or any negative degree angle), it will travel in a clockwise direction.

8 0
3 years ago
Six less than three times a number. write an algebraic expression to represent the given phrase
Masja [62]

Answer: 3x-6

Step-by-step explanation:

Let the number be x

3 times the number is 3x

6 less than 3x is 3x-6

4 0
3 years ago
Write 4 1/5 as a improper fraction
BartSMP [9]

Answer:

21/5

Step-by-step explanation:

8 0
2 years ago
I need all of these awnser a please !
valentinak56 [21]
8.180-65-90=25
180-80-60=40
So, 180-40-25=115.

9.(180-40)divide by 2=70
X=180-70
X=110

10.180-118=62
So, 180-62-90
=28

11.not confident yet

12.180-60=120

13. (180-66)divide by 2 =57
180-57=123
(180-123)divide by 2
=28.5

14.180-68-44=68
180-58-73=49
So,180-68-49=63
(Its the same)
3 0
3 years ago
Other questions:
  • For general a and b, what does this imply about the relationship among p(a ∩ b), p(a) and p(a ∪ b)?
    10·1 answer
  • Find the mean and median of the data.<br><br> 12, 15, 16, 18, 20, 90<br><br> please help!!!
    12·1 answer
  • Simplify 5( 6-3 ) + 2
    9·2 answers
  • Juanita is on vacation and needs a taxi ride
    11·1 answer
  • Given sin x =.1234, find x in degrees.
    9·1 answer
  • Match the numbers to the correct label.
    8·1 answer
  • What's the answer? I need help!
    6·2 answers
  • What's the value of s for s + 10 = 6?
    8·1 answer
  • I NEED HELP WITH THIS ASAP I WILL MARK YOU THE BRAINLIEST NO LINKS!!!
    12·2 answers
  • 6
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!