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
s2008m [1.1K]
3 years ago
7

The length of a rectangle is four times the width. The perimeter of the rectangle is 45 inches. Write a system of equations that

represents this problem. What is the area of the rectangle?
Mathematics
2 answers:
wolverine [178]3 years ago
8 0

Answer:

Let l be the length and w the width of the rectangle.

P as the perimeter and A as the area.

length of a rectangle is four times the width:

w = w

l = 4w

System of equation : 2l + 2w = P

Substitute:

2(4w) + 2w = 45

8w + 2w

10w = 45

w = 45 / 10

w = 4.5

Solve for l:

l = 4w

l = 4(4.5)

l = 18

Area:

A = lw

A = 18(4.5)

A = 81 in²

marissa [1.9K]3 years ago
6 0

Answer:

area =81  square inches

Step-by-step explanation:

width =w

lenght= 4w

2w + 2(4w)=45

10w=45

w=4.5

l= 4.5(4) = 18

4.5+4.5 +18+18 = 45

Area = l*w

4.5*18 = 81

Area= 81 square inches

You might be interested in
What is the quotient (2x^2 + 12x +18 ) divided by (x +3)
katen-ka-za [31]
2(x^2+6x+9) = 2(x+3)^2

So after divided by (x+3), answer will be:

2(x+3)
6 0
3 years ago
The value is $400 invested at 4% interest compounded monthly for 10 years.
svetoff [14.1K]
The equation for interest is 
'Initial amount (interest rate in decimal form) ^ times compounded EX: years'

your equation would be
400(1.04)^10

which equals 592.097713 (not rounded)
8 0
3 years ago
The example of a beach ball with a ping pong ball inside of it can be used to imagine the relationship between what two entities
Nookie1986 [14]

The celestial sphere and Earth is the example of a beach ball with a ping pong ball inside of it can be used to imagine the relationship between what two entities.

The heavenly sphere is what Why is this old idea still relevant today?

  • Ancient people used the celestial sphere to describe the visible universe.
  • Although our understanding of the cosmos has changed, the concept of a celestial sphere is still prevalent because it provides a straightforward perspective on the stars that is useful for navigation.

Which phrase most accurately sums up the celestial sphere?

The entire sky as seen from Earth is portrayed by the celestial sphere. Keep in mind that the celestial sphere is intended to depict the sky as it appears from our planet rather than physical reality.

Learn more about celestial sphere

brainly.com/question/13196153

#SPJ4

3 0
2 years ago
If 1/2+2/5s=s-3/4,what is the value of s?
Sauron [17]

Answer:

b

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Suppose that the amount of algae in a pond doubles every 4 hours. If the pond initially contains 40 pounds of algae, how much al
Paul [167]
320 pounds of algea. After 4 hours, it would be 80, After 8 hours, 160. After 12 hours, 320
7 0
2 years ago
Other questions:
  • The cable supporting a ski lift rises 2 feet for each 5 feet of horizontal length. The top of the cable is fastened 1320 feet ab
    13·1 answer
  • Which system of inequalities is represented by the graph?
    8·2 answers
  • What's the area of the triangle below?
    12·1 answer
  • What is the slope of this line??
    15·1 answer
  • Use the net price rate to calculate the net price for 10 boxes of computer paper if the unit price is $13.59 and a single trade
    7·1 answer
  • Plz answer ASAP!!!!!!What is the volume?
    9·1 answer
  • Solve the inequality: 9x > 18
    15·2 answers
  • I NEED HELP PLZ(what's the answer????)
    13·1 answer
  • HELP I NEED TO FIND THE COORDINATES OF THE POINTS
    9·1 answer
  • 3. The volume of a book is 60 cubic inches. If a large
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!