An unknown substance weighs 35.96kg when it is first brought to the lab. After a week in the lab, a technician weighs it again and finds it weighs 15.89kg. Assuming the substance is decaying exponentially, calculate the decay factor from week to week.

0.8167

Step-by-step explanation:

The exponential decay model is given as:

where A(t) is the present amount, is the initial amount, t is time in weeks and k is the decay factor.

From our problem:

A(t)=15.89kg

t=1 week

Therefore:

Divide both sides by 35.96

Take the natural logarithm of both sides

-k=-0.8167

k=0.8167

The decay factor from week to week is 0.8167.

glide reflection.

its mainly because the pattern will be infinite and will never end. it will look like a gilder or like a filpbook when set to motion.

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "