It would be 8. To solve, look at it like this: 8-b=(-2). I would then look at a number line or create one if your not to sure of yourself. 8-8=0, and then 0-2=-2. 2+8=10 (the numbers you subtracted). So the answer is 10.
Picking up 8 boxcars after 5 stops makes a total of 40 new boxcars . . . add the original 3 engines, 52 boxcars, and 1 caboose to get a total of . . . 3 + 52 + 1 + 8 + 8 + 8 + 8 + 8 = 96 total cars
Answer:
27 cm
Step-by-step explanation:
3×3=9
3×3=9
3×3=9
9×3 or 9+9+9=27
Answer:
9.6 cm
Step-by-step explanation:
These questions are just a way of saying it's a two system equation. You can go about this by elimination for both of them.
-8x - 4y = -12
+ 6x + 4y = 14
---------------------
-2x = 2
/-2
x=-1
Since A is the only answer with x=-1, you technically don't have to solve for y but it is still a good idea to plug x into one of the equations and solve for y.
2x + 3y = 50
+ 4x -2y = 4
-----------------
multiply the top equation by -2 so you can eliminate your x's
-4x - 6y = -100
+4x - 2y = 4
------------------
-8y = -96
/-8
y=12
Once again, your first answer is the only one with y=12 but you should still go back through and plug things in to double check!
