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shepuryov [24]
3 years ago
6

Using the recursive formula of a geometric sequence, find the first five sequences: An=An-1 • 2

Mathematics
1 answer:
Lelechka [254]3 years ago
6 0
How: substitute the known value of An-1 to compute An. Repeat.

In order to do this, you need to know A0 or A1, which you have not given.

In terms of A1, the first 5 terms are
.. A1 = (needs to be given)
.. A2 = 2*A1
.. A3 = 2*A2 = 2*2*A1 = 4*A1
.. A4 = 2*A3 = 2*4*A1 = 8*A1
.. A5 = 2*A4 = 2*8*A1 = 16*A1

If you know A1, you can find the other 4 terms of the first 5 terms. If you don't know A1, this is the answer.
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Complete the ratio<br> 4 : ? = 1 : 6
jolli1 [7]

I think the answer is 4:24

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3 years ago
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How many meters is one centimeter cubed? Also, how many meters cubed are in one liter?
enot [183]
1 m = 100 cm
1 m^3 = 1^6 cm^3


so 1 cm^3 = 10^-6 m^3

and 1 L = 1000 cm^3 = 10^-3 m^3
7 0
3 years ago
Lily paints 3 trees for a wall mural the middle tree is 2 1/2 ft tall the tree on the left is 3/4as tall as the middle tree the
raketka [301]

Answer:

Middle: 2.5  ft

Right: 4,375  ft

Left: 1,875 ft

Step-by-step explanation:

We know that a tree in the middle is 2.5 feet tall.

Now the tree on the left measures 3/4 of the tree in the middle, therefore:

2.5 * 3/4 = 1.875

Which means that the tree on the left is 1.875 feet tall.

Finally the tree on the right 1 3/4, which would be 1.75 times the tree in the middle, therefore:

2.5 * 1.75 = 4.375

Therefore the tree on the right is 4.375 feet tall.

5 0
2 years ago
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Simplify to create an equivalent expression. 2(-n-3)-7(5+2n)
otez555 [7]

Answer:

-16n-41

Step-by-step explanation:

5 0
1 year ago
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Simplify The following equations
Kryger [21]
Mostly collect like terms
use associative property which is
(a+b)+c=a+(b+c)
and remember that:
you just use a general rule
x+x=2x
x^2+x^2=2x^2
3xy4xy=7xy
3x+4x^2=3x+4x^2
you can only add like terms( like terms are terms that are same name like x or y are differnt, and like terms have same power exg x^2 and x^3 and x^1/2 and such


so first one



3b+11c-4c-c
since they are all c except for the first one term, just assign a number for each so it simplifies to c times(11-1)+b(3-4)=c(10-1b=10c-b or

you just use a general rule
x+x=2x
x^2+x^2=2x^2
3xy4xy=7xy
3x+4x^2=3x+4x^2




second one9a-1+8c-8a+c
group like terms
(9a-8a)+(8c+c)-1=(a)+(9c)-1=a+9c-1

12c+5a+7-13c+4a
group like terms(12c-13c)+(5a+4a)+7
add like terms
-c+9a+7
the solution is 9a-c+7


-15-6c+3b-6c+9-2b
group like terms
(-15+9)+(-6c-6c)+(3b-2b)
-6+(-12c)+b=b-6-12c



the answers are:

10c-b

a+9c-1

9a-c+7

b-12c-6

5 0
3 years ago
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