I believe it would be as following:
x+7>12
Here, x represents the unknown number. The symbol for no less than is greater than.
Answer:
X=Y
Step-by-step explanation:
5x-5Y=
+5y=5y
5x=5y
divide both sides by 5
x=y
Answer:
D
Step-by-step explanation:
-4 is listed twice with 2 different outputs
Answer:
144
Step-by-step explanation:
First, do the top and bottom. The top is 2*4*3 or 24, and the bottom is 6*4 or 24.
Now, do the sides. It is a staircase that you can split into 6 2x2 blocks, or 6*4=24. Do the same with the other side to get 24 again.
Now for the front and back. This is 2*4*3 and 6*4 again, or 24 and 24.
Now you have 6 24's so just multiply these and get 144.