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3 years ago

OK I need help the answer is c but I didn't understand the teacher explanation pls help me

Mathematics

1 answer:

serg [7]3 years ago

7 0

9 - 6 + 4 - 8/3 ..,
geometric series a(n) = a1r^(n-1)

r = a(n+1)/a(n)
-6/9 = -2/3
4/-6 = -2/3
-8/3/4 = -2/3
so r = -2/3 and a1 = 9

Sn = a1(1-r^n)/(1-r) = 9(1-(-2/3)^n)/(1-(-2/3))
n is infinite Sn = 9/(5/3) = 27/5

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Which expression is equal to the expression below?

gavmur [86]

Hey there!

$\bold{(2\times6)^4}$
$\bold{2\times6=12}$
$\bold{12\times12\times12\times12}$
$\bold{12\times12=144}$
$\bold{144\times144=20,736}$

$\bold{A.\downarrow}$

$\bold{4\times(2\times6)}$
$\bold{2\times6=12}$
$\bold{4\times12=48}$
$\bold{48\neq20,736}$
$\boxed{\bold{incorrect}}$

$\bold{B.\downarrow}$

$\bold{8^4}$
$\bold{8\times8\times8\times8}$
$\bold{8\times8=64}$
$\bold{64\times64=4,096}$
$\bold{4,096\neq20,736}$
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$\bold{C.\downarrow}$

$\bold{2\times(6)^4}$
$\bold{6^4=1,296}$
$\bold{2\times1,296=2,592}$
$\bold{2,592\neq20,736}$
$\boxed{\bold{incorrect}}$

$\bold{D\downarrow}$

$\bold{2^4\times6^4}$
$\bold{2^4=16}$
$\bold{6^4=1,296}$
$\bold{16\times1,296=20,736}$
$\bold{20,736=20,736}$
$\boxed{\boxed{\bold{correct}}}$

$\boxed{\boxed{\bold{Answer:D.2^4\times6^4}\checkmark}}$

Good luck on your assignment and enjoy your day!

~ $\bold{LoveYourselfFirst:)}$

5 0

3 years ago

John is putting money into his saving account. He starts with $350 in the savings account, and each week he adds 60$

sergey [27]

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Comment down if you think I am right

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umka21 [38]

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1/3 needs to have 2/3 in order to complete the whole.

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3 years ago

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MrRa [10]

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3 years ago

A cylinder has a height of 13 centimeters and a radius of 4 centimeters. What is its volume? Use ≈ 3.14 and round your answer

Roman55 [17]

Answer:

Volume of a cylinder = 653.12 cm³

Step-by-step explanation:

Volume of a cylinder = πr²h

Where,

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Volume of a cylinder = πr²h

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4 0

2 years ago

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