Answer:
Decrease of 63.5%.
Step-by-step explanation:
Exponential function:
An exponential function has the following format:
In which y(0) is the initial value and r is the rate of change, as a decimal. If r is positive, it is a increase. If it is negative, it is a decrease.
In this question:
We have that:
So
So a decrease of 63.5%.
Answer:
7) . 8)
Step-by-step explanation:
7)
Here we have two different types of faces.Bottom face and side faces which are equivalent.
To calculate the area of a trinagle we have the formula of area to be
where a is the height of the triangle and b is the base of the triangle.
here let us first calculate the area of the bottom face,
now for the top faces which are similar, areas would be
Hence the total area is
8)
As we have seen in the above question area for a traingle would be
and for rectangle would be
where l and b are the lengths and breaths of the rectangle.
Area of traingles would be ,
Area of rectangles would be,
Hence the total area is