Answer:
$1540
Step-by-step explanation:
$1210=5T+7C
T=3C
8T+4C=?
1210=5(3C)+7C
C=$55
T=$165
8(165)+4(55)=1540
4.63
255,000,000
Cos(65°) = √(1 + cos(130°)) / 2
0.42=√(1 - 0.64)/2
0.42=√(0.36)/2
0.42²=√0.18²
∠ACD= ∠BAC ( reason: CPCTC)
