Answer:
Ur dad left thats why its subtraction !!!
Step-by-step explanation:
The answer is 7. To check, use a calculator or use multiplication to multiply 7 • 84, your answer will be 588. Again, 7 is the final answer
Answer:
8.5
Step-by-step explanation:
Answer:
last one ! hope it's right :)
Step-by-step explanation:
I'll use subscript notation for brevity, i.e.
.
By the chain rule,



We have

and

When
, we have

and the partial derivatives take on values of

So we end up with
