Ask question

Ask question

All categories

3 years ago

7

A geometric sequence is defined by the explicit formula an = 5(-3)n-1. What is the recursive formula for the nth term of this se

quence?

1 answer:

Ivan3 years ago

6 0

An=a1(r)^(n-1)
an=5(-3)^(n-1)
so then each term is multiplied by -3

so
f(n)=-3(f(n-1))
and
f(n)=5

You might be interested in

sweet [91]

Answer:

a) $2 + 3 + 5 + 6 = 16$

b) $8a + b-9$

c) $8a - 28b + 15c$

Step-by-step explanation:

We are given the following in the question:

1. Equivalent expression

$2 + 3 + 5 + 6$

Since all the terms are like terms, we can write,

$2 + 3 + 5 + 6 = 16$

2. Sum of given expression

$(8a - 2b - 4) \text{ and } (3b - 5)\\ (8a - 2b - 4) + (3b -5)\\= 8a -2b -4 + 3b -5\\\text{Collecting the like terms}\\8a + (-2b+3b) + (-4-5)\\= 8a + b-9$

3. Standard form of the expression

$4(2a) + 7(-4b) + (3 \times c \times 5)\\=(8a) + (-28b) + (15c)\\=8a - 28b + 15c$

which is the required standard form of the given expression.

8 0

3 years ago

What is the sum of the interior angles in this shape?

tino4ka555 [31]

Answer:

270

Step-by-step explanation:

90+45+45+110

so that is wat i think ooo

5 0

3 years ago

Read 2 more answers

What is the probabilty of getting an odd number when choosing between 0 and 10?

LenaWriter [7]

The answer is C I think

7 0

2 years ago

Maria bikes 15 miles per hour and starts at 10 miles. Glen bikes 20 miles per hour and starts at 0 mile. At what time and distan

Ilya [14]

10/(20-15)=2 hours
20*2=40 miles
15*2+10=40 miles
Glen catch up with Maria after 2 hours at 40 miles

6 0

3 years ago

Awnser of 7n-2=6n-2n

Nady [450]

$7n-2=6n-2n \\
6n-2n-7n=-2\\
-3n=-2\\
n=\dfrac{2}{3}$

3 0

2 years ago