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Gnesinka [82]
3 years ago
7

What is the sum of the geometric sequence four, 16, 64,... If there are eight terms

Mathematics
1 answer:
tigry1 [53]3 years ago
3 0
S=4^1+4^2+4^3+\cdots+4^8
4S=4^2+4^3+4^4+\cdots+4^9
\implies4S-S=3S=4^9-4^1
\implies S=\dfrac{4^9-4}3=87,380
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tigry1 [53]

Answer:

2

Step-by-step explanation:

2^2+4(2)=12

4+8=12

So, x=2

Hope this helps.

-Amelia

6 0
3 years ago
Translate to an equation and solve: The sum of two-fifths and f is one-half.<br> Provide<br> f=
SCORPION-xisa [38]

Answer:

9/10

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Since these fractions have different denominators, we need to find the least common multiple of the denominators.The least common multiple of 2 and 5 is 10, so we need to multiply to make each of the denominators = 10

1/2 ∗ 5/5 = 5/10

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Since these fractions have the same denominator, we can just add the numerators

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3 0
3 years ago
How u can convert decimal to a fraction in .23?
Vlada [557]

23

%

=

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=

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First we have to think that the symbol

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⋅

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1

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this is read twenty three percent is equal to twenty three multiplied by one divided by one hundred.

the result is the fraction

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4 0
3 years ago
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bagirrra123 [75]

Answer:

t>12

Step-by-step explanation:

t>180/15

then divide 180 by 15

and you gey t>12

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3 years ago
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damaskus [11]

Okay, here we have this:

Considering the provided function, we are going to calculate the requested one-side limits, so we obtain the following:

5 0
1 year ago
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