2x + 6y = 12
6y = -2x + 12
y = -2x/6 + 12/6
y = -1/3 x + 2
You move all the varibles to one side and then divide it by the number it has remember if you do it for one side you do it to the other
Remember, you can do anything to an equation as long as you do it to both sides
and when multiply or divide by a negative in inequalities, flip the direction of the sign
12x-39<9
add 39 to both sides
12x<48
divde bothh sides by 12
x<4
-4x+3<-6
minus 3 both sides
-4x<-9
times both sides by -1 and flip sign
4x>9
divide both sides by 4
x>9/4
<u>Answer:
</u>
In 3 hour 15 minutes Dennis will walk 9.2072 miles.
<u>Solution:
</u>
It is given that Dennis can walk 2.833 miles each hour. We have to find how far will he walk in 3 hours 15 minutes.
We first convert 15 minutes in hour. To convert 15 minutes in hour we divide 15 by 60.

Therefore 3 hours 15 minutes can be written as 
Now,
In 1 hour dennis can walk 2.833 miles

Thus in 3 hour 15 minutes Dennis will walk 9.2072 miles.
Answer:
Step-by-step explanation:
let the horizontal distance be x
(17.8-1.5)/x = tan 38
or x = 16.3/tan38
or x = 20.863