9y - 77 = 12x - 28
therefore you first need to find x:
7x + 12 = 12x - 28
-5x = -40
x = 8
then you use x = 8
9y - 77 = 12×8 - 28
9y = 96 - 28 + 77
9y = 145
y = 16.11
Puerto rico hispaniola, cuba
Answer:
c. O,B,A,F,G,K,M,L,T
Explanation:
The class and the temperature range are as follows -
Class The temperature range -
O ≥ 30,000 K
B 10,000–30,000 K
A 7,500–10,000 K
F 6,000–7,500 K
G 5,200–6,000 K
K 3,700–5,200 K
M 2,400–3,700 K
The the order of the stars which can be arranged as per the spectrum is given below -
O , B , A , F , G , K , M , L , T
A. True, is the answer, hope this helps :,)