Answer:
0.67 cm/s
Step-by-step explanation:
The area of a square is given by :
....(1)
Where
x is the side of a square

Differentiating equation (1) wrt t.

When A = 81cm², the side of the square, x = 9 cm
Put all the values,

So, the length of the side of a square is changing at the rate of 0.67 cm/s.
Answer:
60
Step-by-step explanation:
It is just 60 I did my work lol
Answer:
0.25
Step-by-step explanation:
-9/6 divided by 3/-2 = 0.25
i am sorry
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Answer:
Dealer 2 is more efficient than Dealer 1.
Dealer 2 is the leading brand.
Step-by-step explanation: