Isolate the variable by putting numbers over the equal sign and multiplying/dividing. I'll do them for you
A. 7+3m=-29
3m=-29-7
3m=-36
M=-12
B. -5x+7=26
-5x=26-7
-5x=19
X=-3.8
C. 31=4-9y
31-4=-9y
27=-9y
-3=y
D. -52-3u=8
-3u=8+52
-3u=60
U=-20
E. 6-x=15
-x=15-6
-1x=9
X=-9
Hope this helps
I'm pretty sure It's 5x - y = -6
Hope I helped!
Answer: it will take 3 hours for both trains to meet.
Step-by-step explanation:
Let t represent the time it will take for both trains to meet.
The two trains travel toward each other from points which are 195 miles apart. It means that after t hours, the total distance that both trains would have covered is 195 miles.
Distance = speed × time
Distance covered by the first train after t hours is
25 × t = 25t
Distance covered by the second train after t hours is
40 × t = 40t
Therefore,
25t + 40t = 195
65t = 195
t = 195/65
t = 3 hours
Solving for variables is easy as all we must do is isolate the variable and simplify. In this case, to isolate the variable, we simply need to divide "n" by 10 (because the "n" is being multiplied by 10).
10n=40
/10 /10
n=4
Using the math above, we can see that n=4.
Answer:
About 7 units
Step-by-step explanation:
About 7 units would be correct. 1 + 6 is 7
however 6 isn’t an option so the next closet thing is 7
HOPE THIS HELPED :3
