Answer:
The coefficient of 
is 
Step-by-step explanation:
The two expressions are
and 
.
The sum of the two expressions is
When we group like terms the expression will be,
When we simplify the expression will now be
The coefficient of is the constant behind in the expression.
The coefficient of is therefore .
-6X-30+6=-2X-16
4X=-8
X=-2
......................................
9 large pictures, which equals 45 hours. 1 small picture which equals 3 hours. That is a total of 48 hours.
I don’t see a picture or anything
Answer:
- boat: 6 mph
- current: 2 mph
Step-by-step explanation:
The relationship between time, speed, and distance is ...
speed = distance/time
For boat speed b and current speed c, the speed downstream is ...
b +c = (16 mi)/(2 h) = 8 mi/h
The speed upstream is ...
b -c = (16 mi)/(4 h) = 4 mi/h
Adding the two equations eliminates the c term:
2b = 12 mi/h
b = 6 mi/h . . . . . divide by 2
Solving the second equation for c, we get ...
c = b -4 mi/h = 6 mi/h -4 mi/h = 2 mi/h
The speed of the boat in still water is 6 mi/h; the current is 2 mi/h.
