Answer:

Step-by-step explanation:
STEP 1: Subtract 11x from 7x.
STEP 2: Subtract 10 from 12.
Answer: 53
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
You are going to roll two dice.
If you roll one die, then there are 6 possible outcomes: 
If you roll two dice, then there are
possible outcomes:

Here the first number is the number rolled on the first die, the second number is the number rolled on the second die.
(2x-5y) + (x+y)
= (2x+x) + (-5y+y)
= 3x + (-4y)
= 3x-4y
So option A is the correct one.
In scientific notation, the answer is 3.5*10^-6 .
I hope that this helps