Answer:
About 72 degrees
Step-by-step explanation:
Answer:
= - 4 cm/s
Step-by-step explanation:
Let us revise the chain rule
If
= a and
= b, then
=
÷
= 
∵ y = x² + 1
- Use the differentiation to find 
∴
= 2x
∵ x = -1
- Substitute x by -1 in
∴
= 2(-1)
∴
= -2
∵
=
×
∵
= 2 cm/s
∴
= (-2) × (2)
∴
= - 4 cm/s
Answer:
D. X= -100
Step-by-step explanation:
5×x/5=5×(-20) (reduce and multiply)
X= -100
Answer:

Step-by-step explanation:
1) Evaluate the exponent:

2) Multiply the numbers:
