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
Andru [333]
3 years ago
12

the perimeter of a rectangle is 55 inches. the ratio of the length to width is 7:4. use proportions to find the area of the rect

angle.
Mathematics
1 answer:
Leni [432]3 years ago
4 0

Answer:

Step-by-step explanation:

let : x the length and y the width    .... ( x  > y and x ; y reals numbers )

the perimeter is : 2(x+y)

2(x+y) = 55...(1)

x/y = 7/4 ...(2)

by (2) : x = (7/4)y

subsct in (1) : 2( (7/4)y +y ) =55

(7/2)y +2y =55

multiply by 2

7y +4y = 110

11y = 110

y = 10

x = (7/4)(10)

x = 35/2

You might be interested in
Is (1,1) a solution the equation 2x - y = 1 ?​
stealth61 [152]

Answer:

Yes

Step-by-step explanation:

2 times 1= 2

y=1

2-1=1

Yes

8 0
2 years ago
Read 2 more answers
Zack wants to make a profit more than $300 for painting 4 identical rooms. The profit he makes is equal to the amount he is paid
crimeas [40]
Profit = paid - supplies

Plug in the given values. We are finding out how much money he needs per room, if he is doing 4 rooms, and subtracting the supplies: 300 = 4n - 4*32.50

Simplify: 300 = 4n - 130

Add 130 to each side. 430 = 4n

Divide by 4 on each side: 107.50= n

300 = 4(107.50) - 130? True

This tells us he must be paid $107.50 to make $300 exactly. Anything larger than $107.51 and up will make more than $300.

3 0
2 years ago
I need help :,)
Dmitry_Shevchenko [17]

Answer:

add 17.50 to 8.75 you get 26.25

7 0
2 years ago
Read 2 more answers
125
Marina CMI [18]

Answer:

2m

Step-by-step explanation:

2250 \div 25 = 90

90 \div 45 = 2

7 0
3 years ago
3x + 2 y = 8<br> 5x + 2 y = 12<br> What is the solution of the system of equations shown above?
Arisa [49]

Answer:

x = -3

Step-by-step explanation:

First solve it:

Subtract the x's from both sides

2y = -3x +8

2y = -5x +2

Divide by two

y= -1.5x + 4

y = -2.5x +1

set them equal to each other:

-1.5x +4 = -2.5x +1

Add 2.5 x to both sides

1x +4 = 1

x +4 = 1

subtract 4 from both sides

x = -3

5 0
2 years ago
Other questions:
  • After the release of radioactive material into the atmosphere from a nuclear power plant in a country in 1984​, the hay in that
    5·1 answer
  • What is the value of x?
    5·1 answer
  • Assessment timer and count Assessment items A rectangle has an area of 102 cm2. The length of the rectangle is 17 cm. What is th
    10·1 answer
  • Compare 5.7145... and √29
    6·1 answer
  • A restaurant sells 12 breakfast meals used what’s 25% of a breakfast meals are pancakes how many orders of pancakes does the res
    7·1 answer
  • $7,600 total sales, 4% commission rate.
    11·2 answers
  • Order the group of quadratic functions from widest to narrowest graph. y= -4x2, y = -3x2, y = -5x2
    13·2 answers
  • Marco is reading a book that is 100 pages long. He has written 66 pages. What percent of the pages ahs he written? What percent
    13·1 answer
  • Identify next three numbers in this sequence: 3, 12, 6, 24, 18, …
    5·1 answer
  • Determine the factors of x^2 - 8x + 16.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!