Question

Find a rational number lying between -3/4 and-2/5Find which of the variables x,y,z and u represent rational numbers and which irrational numbers (i) x^2=11 (ii) y^2=36 (iii) z^2= .04 (iv) u^2=19/9​​

Answer 1

Step-by-step explanation:

Find a rational number lying between -3/4 and-2/5

(-3/4-2/5) /2= -23/40

Find which of the variables x,y,z and u represent

rational numbers and which irrational numbers

(i) x^2=11

= √11----> irrational number

(ii) y^2=36

=y=√36= +6 or -6 ----> rational number

(iii) z^2= .04

z=0.2 or -0 . 2----> rational number

(iv) u^2=19/9

u = √19/9-----> irrational number