2 years ago

In a geomatric sequence, a5= 36 and a7=16

Mathematics

1 answer:

Anettt [7]2 years ago

4 0

Hello,

$a_{5}=36$
$a_{6}=36*r$
$a_{7}=36*r^2=16$
==>r²=16/36=4/9

==>r=2/3 or r=-2/3

You might be interested in

Write a fraction to a decimal

Alona [7]

1/2 = 0.5

1/4 = 0.25

1/5 = 0.2

5 0

2 years ago

Please help me. I'm very confused with this question. Thanks

PSYCHO15rus [73]

I think its A but im not absolutely sure

4 0

2 years ago

Read 2 more answers

The population of the small town of Parks in 2000 was estimated to be 3,901 people with an annual rate of decrease of about 1.8%

trasher [3.6K]

Answer-

The estimated population in 2013 is 3081.

Solution-

This can be represented as exponential decreasing function,

$y=a(1 - r)^t$

Where,

a = starting amount
r = rate
t = years

Putting the values,

$y=3901(1 - 0.018)^{13}$

$=3901(0.982)^{13}$

$=3901\times 0.7897$

$=3080.62$

As population can not be in fraction, so after rounding off the estimated population in 2013 is 3081.

3 0

2 years ago

Simplify the expression: 2(2 + 7b) =

nikitadnepr [17]

Answer:

4 + 14b

Step-by-step explanation:

First, you need to distribute so,

2*2= 4 and

2*7b= 14b

4 0

2 years ago

. A landscaping company charges $40 to mow a lawn and $15 per hour to weed garden beds. The

Murljashka [212]

The landscape company charges 30+15x

7 0

2 years ago