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3 years ago

What is the explicit equation for 64, 16, 4, 1

Mathematics

1 answer:

Nina [5.8K]3 years ago

7 0

Step-by-step explanation:

when we get the common ratio that must be equal

r=16/64=4/16=1/4=1/4 equal

So it is geometric

By using this equation:

a(n)=a(1)*r^(n-1)

and we have a(1)=64 , r=1/4

Explicit rule: a(n)=64*(1/4)^(n-1)

hope this helps

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Need help with geometric sequence quick 30 points!!!!

hram777 [196]

The explicit formula for given geometric sequence is:

$a_n = 6 . 5^{n-1}$

Step-by-step explanation:

Given geometric sequence is:

6,30,150,750....

First of all we will find the common ratio.

Common ratio is the ratio between two consecutive terms of a geometric sequence

In the given sequence

a1 = 6

a2 = 30

a3 = 150

a4 = 750

Now

$r=\frac{a_2}{a_1} = \frac{30}{6} = 5\\r=\frac{a_3}{a_2} = \frac{150}{30} = 5$

The explicit formula for geometric sequence is:

$a_n = a_1 . r^{n-1}$

Putting the values of a1 and r

$a_n = 6 . 5^{n-1}$

Keywords: Geometric sequence

Learn more about geometric sequence at:

#LearnwithBrainly

7 0

4 years ago

Solve using elimination 12c+5c=190 4c+9c=166

Alexandra [31]

Answer:

1) c=11.1764705882

2)c=12.7692307692

Step-by-step explanation:

17c=190

c=11.1764705882

13c=166

c=12.7692307692

3 0

3 years ago

Which polynomial represents a sum of cubes?

bija089 [108]

Answer:

1) The polynomial $8x^3+1$ represents a sum of cubes

2) The polynomial $49x^2-25$ represents a difference of squares

Step-by-step explanation:

1) To find the polynomials represents a sum of cubes :

$8x^3+1$ represents a sum of cubes

For $8x^3+1$

$=2^3x^3+1^3$

$=(2x)^3+1^3$

Therefore $8x^3+1=(2x)^3+1^3$

Therefore $8x^3+1$ represents a sum of cubes

2)To find the polynomials represents a difference of squares :

$49x^2-25$ represents a difference of squares

For $49x^2-25$

$=7^2x^2-5^2$

$=(7x)^2-5^2$

Therefore $49x^2-25=(7x)^2-5^2$

Therefore $49x^2-25$ represents a difference of squares

5 0

4 years ago

Jhhhhhhdiaoqvd aicyeveud8c

Serggg [28]

$189.38

The beginning balance was 47.86

Since then, he deposited 25.20, 52.75, and 94.11

Then he took out 22.04 and 8.50

Hope this helps!

6 0

3 years ago

Pls help me a little quick problem!! ty :)

shtirl [24]

Answer:

(8-b)/6

Step-by-step explanation:

give me Brainllest Plz

7 0

3 years ago