मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

Give an algebraic equation for the following statement: “The difference between the area and perimeter of a rectangle is 20”. - Mathematics

Advertisements
Advertisements

प्रश्न

Give an algebraic equation for the following statement:

“The difference between the area and perimeter of a rectangle is 20”.

बेरीज

उत्तर

Let the length of a rectangle = l and breadth = b then Area = Ib, Perimeter = 2(l + b)

Area – Perimeter = 20

∴ Ib – 2(I + b)

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Algebra - Exercise 3.4 [पृष्ठ ६९]

APPEARS IN

सामाचीर कलवी Mathematics - Term 1 [English] Class 7 TN Board
पाठ 3 Algebra
Exercise 3.4 | Q 9 | पृष्ठ ६९

संबंधित प्रश्‍न

Factorize 4( x - y)2  -12( x - y)( x + y ) + 9(x + y )2


Factorize the following expressions

1- 27a3


Factorize the following expressions:

`8x^2y^3 - x^5`


Factorize the following expressions:

x3 + 6x2 +12x +16


What must be added to the following expression to make it a whole square? 

4x2 − 20x + 20


Multiply: x2 + y2 + z2 − xy + xz + yz by x + y − z


Write the value of 253 − 75+ 503.


The value of \[\frac{(0 . 013 )^3 + (0 . 007 )^3}{(0 . 013 )^2 - 0 . 013 \times 0 . 007 + (0 . 007 )^2}\] is


Write the number of the term of the following polynomial.

5x2 + 3 x ax


Multiply: (2x + 3y)(2x + 3y)


Multiply: (xy + 2b)(xy - 2b)


Divide: x2 + 4xy + 4y2 by x + 2y 


Divide: 6x2 + 5x - 6 by 2x + 3


Construct a formula for the following:

Total wages (₹ W) of a man whose basic wage is (₹ B) for t hours week plus (₹ R) per hour, if he Works a total of T hours.


Solve the following equation.

3y + 4 = 5y − 6


If x = 2 and y = 3, then find the value of the following expressions

x + 1 – y


Sonu and Raj have to collect different kinds of leaves for science project. They go to a park where Sonu collects 12 leaves and Raj collects x leaves. After some time Sonu loses 3 leaves and Raj collects 2x leaves. Write an algebraic expression to find the total number of leaves collected by both of them.


Rohan's mother gave him ₹ 3xy2 and his father gave him  ₹ 5(xy2 + 2). Out of this total money he spent ₹ (10 – 3xy2) on his birthday party. How much money is left with him?


Match Column I with Column II in the following:

Column I Column II
1. The difference of 3 and a number squared (a) 4 – 2x
2. 5 less than twice a number squared (b) n2 – 3
3. Five minus twice the square of a number (c) 2n2 – 5
4. Four minus a number multiplied by 2 (d) 5 – 2n2
5. Seven times the sum of a number and 1 (e) 3 – n2
6. A number squared plus 6 (f) 2(n + 6)
7. 2 times the sum of a number and 6 (g) 7(n + 1)
8. Three less than the square of a number (h) n2 + 6

Express the following properties with variables x, y and z.

Commutative property of addition


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×