86 + 80 = 166
80 + 6 = 86
86. Do it on a paper that's what I did but there's a way I also had in mind. 5 plus 3 is 8 and 50 plus 30 is 80 just add the 6 to the 80 and I got 86.
The average is all the numbers added together and then divided by the # of numbers.(80+85+90+88+86+83+89+70)/8=671/8=83.875Order of operations has the brackets first and then the division.
8 + 6 = 14 and 40 + 80 = 120. So therefore 48 + 86 = 14 + 120 which is 134
8 centimeters is equal to 80 mm (1 cm = 10 mm). Adding 80 mm and 6 mm gives a total of 86 mm.
75
3X + 6 + X = 86 add the like terms, X's, together 4X + 6 = 86 subtract 6 from each side 4X = 80 divide both sides by 4 X = 20 check 3(20) +6 + (20) = 86 86 = 86 checks
172
70 + 80 + 70 + 30+ 80 + 80+ 80 = 490
Pi plus 86 equals 89.14
47 plus 39 gives 86.
-86