Answer:
Rate of change of the area of the square is 42 units at t = 2.
Step-by-step explanation:
We note that the area of the square is given by: but we aim to find
. But we can use the chain rule to pull out that dA/dt. Doing so gives us:
Now, (by the power rule and
But since we have "x" and not "t", we want to find what x is when t = 2. Substituting t = 2 gives us x(2) = 3(2) + 1 = 7.
So, finally, we see that:
Answer:
Step-by-step explanation:
Given that:
is a supplement of
.
m = 78°
To find:
m = ?
Solution:
First of all, let us learn about the concept of an angle being a supplement of the other angle.
is known as supplement of
, if sum of the two angles is equal to 180°.
.
For example, angle made on one side by a line intersecting the other line are supplement of each other.
Here, we are given that is a supplement of
.
In other words:
Putting value of :
So, the answer is: