We know that
We can write an Arithmetic Sequence as a rule:
<span>an = a1 + d(n−1)</span>
where
<span>a1 = the first term
<span>d =the "common difference" between terms
in this problem
a1=15 a2=7 a3=-1 a4=-9 ..... an=-225
d=a2-a1
d=7-15-----> d=-8
</span></span>an = a1 + d(n−1)
for
an=-225
d=-8
a1=15
find n
-225=15+(-8)*(n-1)--> (n-1)=[-225-15]/-8----> n-1=30---> n=30+1---> n=31
the answer is31
Answer:
$4
Step-by-step explanation:
2/100 x 200 = 4
a.
20/2 = 10
0, 10, 20, 30, 40, 50
b.
32.4/4 = 8.1
0, 8.1, 16.2, 24.3, 32.4, 40.5
c.
8.8/4 = 2.2
0, 2.2, 4.4, 6.6, 8.8, 11
d.
10/3 = 3.3
0, 3.3, 6.7, 10, 13.3, 16.7
