Answer:
an= 11 + (n - 1) x -1
a30= -18
Step-by-step explanation:
this is right, trust me
Answer:
Step-by-step explanation:
Answer: 2/3 + 1/4 = 11/12
The least common denominator of both denominators is 12.
The first fraction , 3 x 4 = 12
2 2x4 8
— = —— = —
3 3x4 12
The second is the same , 4 x 3 = 12
1 1x3 3
— = —— = —
4 4x3 12
Add both fractions:
8 3 8 + 3 11
— + — = ——— = —
12 12 12 12
8-2=6
180×6=1080 degrees
sum of interior angle of an octagonal box = 1080 degrees