Answer:
9n + 7
Step-by-step explanation:
Answer:
Step-by-step explanation:
a) 6 out of 10 are shaded. 6/10 = 60/100 so it is 60%
b) 11 out of 20 are shaded. 11/20 = 55/100 so it is 55%
Answer:
The rate of change is ft^(2)/min
Step-by-step explanation:
The area of a circle is given by the following equation:
To solve this question, we have to realize the implicit differentiation in function of t. We have two variables, A and r. So
We have that:
.
We want to find
So
Since the area is in square feet, the rate of change is in ft^(2)/min.
So the rate of change is ft^(2)/min
The composed fraction means that the input of is the ouput of .
So, the chain is
The domain of is composed by all inputs which are not zero, otherwise we would have a zero denominator.
So, since doesn't accept 0 as an input, and we want to feed it with , we conclude that can't be zero.
So, we have
Since
we have
Since these two points cases to vanish, they can't be accepted as inputs by .