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
Mnenie [13.5K]
2 years ago
5

PLEASE HELP!!!!!! The length of a rectangle is three times its width. If the perimeter of the rectangle is 56 cm, find its area.

Mathematics
1 answer:
Alexus [3.1K]2 years ago
8 0

Step-by-step explanation:

l = length

w = width

l = 3w

perimeter p = 2l + 2w = 56

using the identity of the first equation

p = 2(3w) + 2w = 56

6w + 2w = 56

8w = 56

w = 7 cm

l = 3w = 3×7 = 21 cm

so, the area is

l×w = 21×7 = 147 cm²

You might be interested in
W+3 /3 = -4<br> Solve what (W) = <br> Im having trouble solving this can someone help <br> Thanks :)
poizon [28]

Answer:

w = - 15

Step-by-step explanation:

Assuming you mean

\frac{w+3}{3} = - 4 ( multiply both sides by 3 to clear the fraction )

w + 3 = - 12 ( subtract 3 from both sides )

w = - 15

5 0
3 years ago
Read 2 more answers
Practice with area
joja [24]

Answer:

  1453 cm²

Step-by-step explanation:

The area of a regular polygon is given in terms of its perimeter and apothem by ...

  A = (1/2)Pa

  A = (1/2)(145.3 cm)(20 cm) = 1453 cm²

The area of the pentagon is 1453 square centimeters.

4 0
3 years ago
University theater sold $525 tickets for a play. Tickets cost &amp;21 per adult and $12 per senior citizen. If total receipts we
Kamila [148]
620.25 u calculate 7443 and divide that by 12
4 0
3 years ago
PLEASE HELP HURRY!! What is the value of x?
Lesechka [4]

Answer:

D

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Write the standard form of the equation of the circle with center (8,−1) that passes through the point (6,7)
marshall27 [118]

Answer:

(x - 8)^2 + (y + 1)^2 = 68

Step-by-step explanation:

The standard form of the equation of the circle with center (8,−1) is :

(x - 8)^2 + (y + 1)^2 = R^2

If the circle passes through the point (6,7) that means that the point (6,7) is a solution of the equation and we can replace (x,y) with (6,7) to find R.

5 0
3 years ago
Other questions:
  • Factor the polynomial:<br> ab −3b+b^2−3a
    8·1 answer
  • NEED THIS ANSWERED ASAP.
    7·1 answer
  • SOMEONE PLEASE PLEASE HELP!!!!​
    14·2 answers
  • What does magnitude mean in this question???
    7·1 answer
  • Christmas candy and items are 80% off at Walgreens. Lacy got 3 rolls of wrapping paper originally priced at $4.99 each and a box
    9·1 answer
  • Lolita, Paco, Óscar y María están en una carrera de bicicletas. Lolita lleva 3/5 del trayecto, Paco 4/7, Óscar 3/4 y María 1/2,
    13·1 answer
  • 1
    13·1 answer
  • This is part 2 of my question! but the questions are marked as odds for this part, which is part 2.
    8·1 answer
  • Find the equation of the circle with center (4,5) which passes through the y-intercept of the line 5x-2y+6=0​
    6·1 answer
  • Answer this volume based Question. I will make uh brainliest + 50 points​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!