Unsure of what you mean by "reference number."
I do recognize that 11pi/9 is in quadrant III. I suspect that the so-called "reference number" is the acute angle between the end ray of 11pi/9 and pi, or, in more easily comparable numbers, between 9pi/9 and 11pi/9.
That difference is 2pi/9.
75 always do parenthesis first so 5*3=15 so 15x5=75 because 5*5=25 so drop the 5 carry the 2 the do 5*1 which equal 5 then add 2 and that equal 75.
Answer:
True
Step-by-step explanation:
- If it snows today, I will have to go out and clean the driveway.
- If it does not snow today, I will not have to out and clean the driveway.
- Without going into p's and q's and true false tables, I believe the negation is also true.
20 x 2 x 60 x 2 = 4800
20 in 30 seconds
x2 = 40 in a minute
×60 = 2400 in an hour
x2 = 4800 in 2 hours
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(x-25) = 7 multiply 5 to both sides first
-(x-25) = 35 then expand the brackets
-x+25=35 make x the subject now;
-x=10
x= -10