Answer:
-7
Step-by-step explanation:
30-16= -5n +3n
14 = -2n
multiplying both by half,u have -
7 = -n
multiply both by -1
7 = n
Answer: The equations are
6x - 6y = 9
4x + 4y = 9
Step-by-step explanation:
Let x represent the speed of the row boat in still water.
Let y represent the speed of the current.
Dana can travel 9 miles in her rowboat in 6 hours against the current. This means that the total speed at which she travelled is
(x - y) miles per hour.
Distance = speed × time
Distance travelled against the current is expressed as
9 = 6(x - y)
6x - 6y = 9
With the current, it takes 4 hours to row the same distance. This means that the total speed at which she travelled is
(x + y) miles per hour.
Distance travelled with the current is expressed as
9 = 4(x + y)
4x + 4y = 9
X= fancy, y= plain
x+y= 7
28x+ 15y=131
solve by substitution
The SI system is the Internation System of Units which contains kg, liters, cm, etc.
The answer is 10. Example: meters and decimeters, decimeters to centimeters, centimeters to millimeters
Answer:
Step-by-step explanation:
<u>∴ ΔABC ≈ ΔADE</u>
∴
↑1 ↑ 2 ↑3
→
hope it helps..
have a great day!!