An exterior angle is equal to the sum of the two opposite inside angles.
T + 31 = t + t-29
Simplify:
T + 31 = 2t -29
Add 29 to both sides:
T + 60 = 2t
Subtract 1t from both sides:
T = 60
C/30 = 8/12
c/30 = 2/3
3c = 60
c = 60/3
c = 20
To find 40% of 68
you simply divide 40% by 100 and multiply by 68
40/100 x 68 = 32.64
32.64 is 40% of 68.
The same steps can be used to find any percentage of any number.
simply divide the percentage given by 100 and multiply by the total number.
Answer:
negative 6, negative 4, negative 2, negative one half
Evaluation of square root 169 = 13, so 10 + 13 = 23
