Answer:
-12a2 + 9a - 5
Step-by-step explanation:
the 2 should be small
1 + 3 = 4;
9 x 4 = 36;
60 - 36 = 24;
2 x 24 = 48;
14 + 48 = 62;
-6 + 62 = 56.
Answer:
Step-by-step explanation:
1/2k - 3/8k.....lowest common denominator is 8
4/8k - 3/8k = 1/8k <===
The equation for this is (n-2) x 180
Replace n with the number of sides:
a. 9: (9-2) x 180 = 7 x 180 = 1,260
b. 19: (19-2) x 180 = 17 x 180 = 3,060