Answer:
^geometric sequence^
<h2>YES, it belongs to a geometric sequence because it has a ratio. and how to find ratio is:</h2>
a2 : a1
=9 : 3= 3
or a3 : a2
=27 : 9= 3
or a4 : a3
= 81 : 27= 3
so, the anwer is yes;3 (b)
<h3>FINALLY FOUND, MODERATOR!!</h3>
1. Unique line postulate
Statement: Through any two points, there is exactly one line.
2. Line intersection postulate
Statement: If two lines intersect, then their intersection is exactly one point.
3. Segment addition postulate
Statement: If A, B and C are collinear and B is between A and C, then AB + BC = AC
4. Angle Addition postulate
Statement: If R is in interior of
, then
.
5. Linear pair theorem
Statement: If two angles form a linear pair, then the angles are supplementary.
6. Congruent Complements theorem
Statement: If two angles are complementary to the same angle, then the angles are congruent.
By definition, the power is given by:

By definition, the power is given by:
Where,
W: Work done
t: time
Clearing the time we have:

Substituting values we have:

Making the corresponding calculations we have:
Answer:
is needed for a 15,000 W engine to do 1,800,000 J of work about:
Answer: here are a few ordered pairs
1. (0,-4)
2.(8,0)
3.(16,4)