Answer:
2/3
Step-by-step explanation:
Use the formula for finding gradient.
Answer:

Step-by-step explanation:
According to the Product Rule for Exponents, 
a = 7
m = 9
n = 4
So,

So, the answer is
.
Hope this helps!!!
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Answer:
2 units up
Step-by-step explanation:
You're just taking the entire graph of cos(x) and then adding 2 so it moves everything up. If you added 2 to x BEFORE taking the cosine
(like y = cos (x+2) ), then you would shift it left 2. Adding and subtracting from the x moves everything left or right. Adding or subtracting at the end just moves it up and down.
C=2pi(r)
Radius= 1/2(diameter)
Radius = 4km
C= 2(3.14)(4km)
C=25.12km
Answer:5.4
Step-by-step explanation: