Answer:
d. -38
Step-by-step explanation:
Arithmetic sequence concepts:
The general rule of an arithmetic sequence is as follows:

In which d is the common diference between each term.
We can expand the general equation to find the nth term from the first, by the following equation:

In this question:

17th term:

So the correct answer is:
d. -38
Answer:
Perimeter of polygon B = 80 units
Step-by-step explanation:
Since both polygons are similar, their corresponding sides and perimeters are proportional. Knowing this we can setup a proportion to find the perimeter of polygon B.

Let
be the perimeter of polygon B. We know from our problem that the side of polygon A is 24, the side of polygon B is 15, and the perimeter of polygon A is 128.
Let's replace those value sin our proportion and solve for
:





We can conclude that the perimeter of polygon B is 80 units.
Answer:
The measure of the side
is 8.8.
Step-by-step explanation:
Since
, then
,
,
and
. From figure we have the following relationship:
(1)
Where
is the proportionality ratio.
If we know that
, then the measure of side
is:
(1b)


(1c)


The measure of the side
is 8.8.
(a + 2b) • (a2 - 2ab - 4b2)