Answer:
#3:8n-4
Step-by-step explanation:
combine like terms
3n+n=4n
-7+5=-2
4n-2
multiply that by 2 to get the perimeter, which is 8n-4
Answer:
3y=0
Step-by-step explanation:
(2y+6) (y-6)=0
first you are going to remove the bracket
so: 2y+6 y-6 =0
then you are going to arrange them
so: 2y+y =6-6
then you're going to do your addition
so: 2y + y = 3y
while 6-6=0
so therefore the answer who be 3y=0
Answer:
The rate of the jet in still air is 738 mph and the rate of the wind is 90 mph
Step-by-step explanation:
Check: (738+90)*6 = 648*6 = 3888 mike's against the wind
(738-90)*6 = 828*6 = 4968 miles with the wind