Answer:
The value of Area of B/Area of A is 0.75.
Step-by-step explanation:
It is provided that:
- The length of rectangle B is 25% greater than the length of rectangle A.
- The width of rectangle B is 3/5 X the width of rectangle A.
Consider the diagram below.
The area of a rectangle is:

Compute the area of rectangle A as follows:

Compute the area of rectangle B as follows:

Compute the value of Area of B/Area of A as follows:

Thus, the value of Area of B/Area of A is 0.75.
Answer:
The measure of each interior angle of a regular decagon is 144 degrees.
Step-by-step explanation:
The measure of the interior angles of a decagon is 1440, due to the formula being (n-2)(180). Since a decagon is a ten sided shape, it would be (10-2)(180).
8 x 180= 1440.
Next, we divide the total by the number of the sides the polygon has—ten. 1440 divided by 10 is 144, so the measure of each interior angle is 144 degrees.
Answer:

Step-by-step explanation:
If we have our proportion set up like this:

Then using the cross products property, we can find the value of n.
The property states that the two numbers that are diagonal to each other DIVIDED by the number diagonal to the variable will equal the variable.
So:

Hope this helped!