State whether the following statements are true (T) or false (F):
(i) If x is variable then 5x is also variable.
(ii) If y is variable then y – 5 is also variable.
(iii) The number of angles in a triangle is a variable.
(iv) The value of an algebraic expression change with the change in the value of the variable.
(v) If the length of a rectangle is twice its breadth, then its area is a constant.
(vi) An equation is satisfied only for a definite value of the variable.
(vii) If x toffees are distributed equally among 5 children, then each child gets 5x toffees.
(viii) t minutes are equal to 60 t seconds.
(ix) If x is a negative integer, then -x is a positive integer.
(x) x = 5 is a solution of the equation 3x + 2 = 13.
(xi) 2y- 7 > 13 is an equation.
(xii) ‘One third of a number x added to itself gives 8’ can be expressed as 
+ 8 = x.
(xiii)The difference between the ages of two sisters Lata and Asha is a variable.
Solution:
More Solutions:
- The correct algebraic statement is
- If each matchbox contains 48 matchsticks.
- x = 3 is the solution of the equation
- The quotient of x by 3 added to 7 is written as
- If the length of a rectangle is 3 times.
- For any two integers a and b.
- (-5)2 × (-1)3 is equal to
- Look at the following matchstick pattern of polygons.
- Write an algebraic expression for each of the following:
- When x = 4 and y = 2, find the value of: