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:

Step-by-step explanation:
1) when x= 1/5
y = 1/5 + 1/2
y = 7/10
2) when x= 1/4
y = 1/4 + 1/2
y= 3/4
3) when x= 1/3
y = 1/3 + 1/2
y = 5 /6
Answer:
B is greater than A
Step-by-step explanation:
B is greater than A coz A has the smallest population. The population was due 2012 and B=2.5million and A=1.8million that means B is greater than A
Answer:
x ≈ 46.7°
Step-by-step explanation:
Using the sine ratio in the right triangle
sin x =
=
=
, then
x =
(
) ≈ 46.7° ( to the nearest tenth )
I believe it’s 10/33 because you divide 4/9 and 22/15 and use kfc you get 60/198 simplifying it makes 10/33