Question

If the digits are reversed, the interchanged number is 9 less than 3 times the original number .The equation for the above condition is __________________ (a) 90−9=3(9+9)−9 (b) 9+9=3(90−9)−9 (c ) 9+9=9−3(90−9) (d) 9−90=9−3(9+9)

Answer 1

Answer:

Aerobic exercise

Aerobic exercise is physical exercise of low to high intensity that depends primarily on the aerobic energy-generating process. "Aerobic" is defined as "relating to, involving, or requiring free oxygen", and refers to the use of oxygen to meet energy demands during exercise via aerobic metabolism adequately. Wikipedia