Fill in the blanks to make the statements true. Sum of two numbers is 81. One is twice the other.

(i) Obtuse angle  (ii) 180o  (iii) uncommon

The two non-zero fractions whose product is 1, are called the Reciprocal of each other.

(a) If smaller number is x, the other number is 60-x.(use sum) (b) The difference of numbers in term of x is 60-2x  (c) The equation formed is -2x = 30 (d) The...

(a) If Palak gets x marks, Abha gets 2x marks. (b) The equation formed is 4x + 3x = 280 (c) The solution of the equation is x = 40 (d) Marks obtained by Abha...

In natural numbers, 4x + 5 = – 7 has No solution.

 In natural numbers, x – 5 = – 5 has No solution.

Fill in the blanks to make the statements true.  In whole numbers, x + 8 = 12 – 4 has One solution. 

If 84 exceeds another number by 12, then the other number is 72

 The sum of an exterior angle of a triangle and its adjacent angle is always a right angle.

If one angle of a triangle is equal to the sum of other two, then the measure of that angle is 90°.