a constant of proportionality is a number you have to multiply x by to get y.
y=kx is the equation that expresses the proportionality of x and y
the constant of proportionality is k, so k=-5
Answer:
1)164%
Step-by-step explanation:
plus them you'll get the answer
The area of the circular sector is

From that, the equation for the central angle is

The perimeter of the circular sector is the sum of the arc length and twice the radius.

From that, the equation for the central angle is

The value of r can be found by equating these two expressions for θ.

By any of several means, you can find that r=0.2 or 1.25. The latter value corresponds to the requirement that the central angle be less than 90°. The radius is ...
1.25 miles.
Answer:. 1/ 4(x+7)^4
Step-by-step explanation:we will get 4(x+7)^-4
So if we do the inverse , we will get
1 / 4(x+7)^4