Answer: L=45, W=9
Step-by-step explanation:
Perimeter P=108 so if L=5W,
P=2(L+W)=2(5W+W)=2(6W)=12W
108=12W
W=108/12=9
L=5*9=45
Answer:
40 mph
Step-by-step explanation:
If the speed increased by 20%, now the speed is 120% of the original speed.
48 mph is 120%, so dividing by 6 will get 8 which is 20%.
If 8 is 20%, you can multiply it by 5 to get 40, which is 100%. This means 40 mph is the original speed.
Hope this helps!
Step-by-step explanation:
y+4z=0
4x+y-2z=2
-3x-3z=-9
That the equation could be combined into like terms