Answer:
- 1020
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = 12 and d = a₂ - a₁ = 0 - 12 = - 12 , thus
a₈₇ = 12 + (86 × - 12) = 12 - 1032 = - 1020
-1008
CAB = 30.71 BCA = 90 ABC = 59.29
BCA = 90
9x + 6 + 5x = 90
14 x = 90-6 = 84
x = 43/7
(43/7 ) * 5 = 30.71
90 - 30.71 = 59.29
8.9 cm
We have
They are 14.2 feet high each
1136/80=14.2
