Answer:
i dont know
Step-by-step explanation:
If y=mx+b,

You can't differentiate a constant, so dy/dx=m.
Answer:
-4+-4
Step-by-step explanation:
The value of x is 10
Its hard to explain
Answer:
7.8*10^7
1.0 * 10^4
Now divide 7.8/1.0 and the power goes up to be subtracted
=7.8 * 10^(7-4)
= 7.8 * 10^3