The product of a non zero rational and an irrational number is (A) always irrational (B) always rational (C) rational or irrational (D) one

Yes. Even when an object experiences a net zero external unbalanced force, it is possible that the object is travelling with a non-zero velocity. This is possible only when the...

(c) either metals or non-metals 

(a) Iodine  (b) Bromine  (c) Graphite  (d) Carbon  (e) Sulphur, phosphorus  (f) Oxygen

Solution: The product of a rational number and an irrational number can be a rational number or an irrational number. Examples: i. rational number = 0 irrational number = √2 => 0 x √2 = 0, which...

It is (B) an irrational number 

The reciprocal of an irrational number is an irrational

Correct answer is (D) always a non-zero number

Let x be the rational number ,then 5x/2 + 2/3 = -7/12  The LCM of 2,3 and 12 is 12,so multiplying by 12 30x+8=-7 Transposing 8 to R.H.S, we obtain 30x=-15 Dividing by 30 on both the...

yes zero is a rational number. it can be written as 0/1,0/2 etc, in the form p/q where p and q are integers and q ≠0 ? 

Let a,6 be the zeros of given polynomial. Then a+6=5 ⇒ a=-1.