Answer:
a.
-6a²/ b
b.
5y³
Step-by-step explanation:
a
-6a²b⁻¹
-6a²/ b
b.
5/ y⁻³
5 / 1/ y³
5 * y³/1
5y³
Two planes intersect at a line. Not a point.
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:
300 miles
Step-by-step explanation:
200/2.1= 95.238...
95.238...*3.15=300
Hope this helps :)
Answer:
I think it's parallelograms.....
Step-by-step explanation:
Parallelograms; a four-sided plane rectilinear figure with opposite sides parallel.