Answer:
5.1
Step-by-step explanation:
Answer:
Step-by-step explanation:
I don't know what systems you have to choose , but a system is:
18 = x+y
6 = x-y
x=12
y=6
so the boat moves at 12 miles per hour and the stream moves at 6 miles per hour
Answer:
120 minutes
Step-by-step explanation:
large horse + small horse = together
1 pool/40 minutes + x = 1pool/30 minutes
1/40 + x = 1/30
subtract 1/40 from both sides
x = 1/30 - 1/40
use 120 as common denominator
x = 4/120 - 3/120
x = 1/120
x = 1 pool / 120 minutes
It takes the small horse 120 minutes
Answer:
Center = (7, - 5)
Radius = 3
Step-by-step explanation:
The real answer is y=tan(x-pi)-1