Answer:
Step-by-step explanation:

b = 2/3


a = 7/3
b)

Cross multiply,
2b + 1 = a*(3b - 1)
2b + 1 = a*3b - 3*a
2b + 1 = 3ab- 3a
2b = 3ab - 3a - 1
2b - 3ab = -3a - 1
b(2 - 3a) = -3a - 1

Answer:
Answer: 286
Step-by-step explanation:
6+7=13
13C10=286
Answer: 286
Answer: 
Step-by-step explanation:
The measure of the third unknown arc is
.
So, 
Answer:
8v + 3.
Step-by-step explanation:
1/8 * 64v + 1/8 * 24
Answer:
B=45
Step-by-step explanation:
let the supplamentary angle of <A is <d
180-A=d
180-135=d
45=d
90+d+B=180
90+45+B=180
135+B=180
B=180-135
B=45