Answer:
11
4
Step-by-step explanation:
3 hrs to travel 45 miles downstream
4 hrs to travel 28 miles upstream
speed of boat in still water= s
speed of the current= c
added up the 2 equations, we get:
Answer:
19.1
Step-by-step explanation:
13²+14²=365
√365≈ 19.1
Answer:

Step-by-step explanation:
The given expression is

We group the constant terms on the right hand side to obtain;


We square both sides of the equation to remove the square root.


This will simplify to;


-2(3x-4)=8
-6x + 8 = 8
-6x = 0
x = 0