Answer:
10
Step-by-step explanation:
12x + 20+40 = 180
12x = 120
X = 10
The 77th term is 532 because the nth term is 7n-7
7x77=539
539-7=532
Answer:
47
Step-by-step explanation:
the formula is πr²h/3= pi=22/7, so 22/7x 3x 5/3= 47.12389 simplified= 47
C
(1, 3) is 5 units to the right of (-4, 3)
Octagons have 8 lines of symmetry
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