B) 43 because they increase 3
c) 32 because they decrease 7
To find the value of x , bring the variable to the left side and bring all the remaining values to the right side. simplify the values to find the result.
R is 18 and x is 12 is the answer of your
question
1+3+5+7+...+999 =
= 1+2+3+4+...+500
+1+2+3+...+499
= 2·(1+2+3+...+499) + 500
= 2·(499·500)/2 + 500
= 499·500 + 500
= 500·(499 + 1)
= 500·500
= 250.000
I would say 8.0 Because if you do 12.6-4.9 you get 7.7 ...hope that helped
