Answer:
B
Step-by-step explanation:
The answer is B, I and IV only
Answer:
no 146.5 > 145
Step-by-step explanation:
Subtracting the polynomials will give us:
(7.8x-3.4y+z)-(-9.2x+4.8y-2.1z)
=(7.8x+9.2x)+(-3.4y-4.8y)+(z+2.1z)
=17x-8.2y+3.1z
Answer: 17x-8.2y+3.1z
3. True
4. False
5. False
6. True
7. False
I dont know numbers 1, 2, or 8.