The fraction is your answer :P so the common denominator seems to be 180, which ends up being 9/180 - 5/180 = 4/180, which simplifies to 1/45 and thats what 1/20-1/36 equals to :P
<span>a. True
The question is pretty much the entire definition of a radian. For an unit circle, its entire circumference is 2π and the entire circle has 2π radians. A quarter circle, or 90°, or π/2 radians, have 1/4th of the circumference. And 2π/4 is π/2. This natural relationship is WHY higher mathematics uses radians for the measurement of angles rather than arbitrary units such as degrees.</span>
3x=207 3x is the number of days while 207 is the cost