Answer: Never true.
Step-by-step explanation: Distribute the numbers: 4 times x is 4x, 4 times 3 is 12. Then you have the equation: -x+4x +12 = -12. Now, choose a random number, maybe -4. A negative plus a negative cancels out so you are left with 4-16(Because you distribute the number) +12 = -12. 4-16 is -12. -12 plus 12 equals 0.
Answer: 8.94427
Step-by-step explanation: using the Pythagorean theorem which is A squared plus B squared equals C squared you can find this
Answer:
x = 2
Step-by-step explanation:

and 4/2 = 2