Answer:
13.A) y= 4/3 x+1
D) all real numbers
Step-by-step explanation:

Answer:
1 19/21
Step-by-step explanation:
12/21+1 +7/21
19/21+1
Answer:
44cm
Step-by-step explanation:
Formula of circumference of circle: C = 2πr
Since C = 88π
⇒ 88π = 2πr
⇒ r = 88π/2π
⇒ r = 44cm
Solving for both velocities:
16 km / 2 hours = 8 km per hour downstream
16 km / 4 hours = 4 km per hour upsteram
bsw means boat speed in still water cs means current speed
bsw - cs = 4 km per hour
bsw + cs = 8 km per hour
Adding both equaions:
2 bsw = 12 km per hour
boat speed = 6 km per hour
bsw + cs = 8 then
current speed = 2 km per hour
Source: 1728.com/veloccal.htm