Answer:
no solution
Step-by-step explanation:
x+y=7
x=3-y
Substitute the second equation into the first
(3-y) +y = 7
Combine like terms
3 = 7
This is never true so there is no solution
Answer:
Naw g I need the answer too
Step-by-step explanation:
Your answer would be r = 3.82
Answer:
10 km/h
Step-by-step explanation:
Let s = man's speed and c = speed of current
s + c = 15
c = 2.5 Insert value of c
s + 2.5 = 15 Subtract 2.5 from each side
s = 12.5 km/h
=====
Speed against current
= 12.5 – 2.5
= 10 km/h