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2 years ago

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Part B The mass of an average grain of rock salt is about 40 times the mass of an average grain of table salt. If you multiply t

he mass of table salt in standard notation by 40, what value do you get?

1 answer:

Lady bird [3.3K]2 years ago

6 0

Answer: Its (A)

Step-by-step explanation:

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The 13th term of a geometric sequence is 16, 384 and the first term is 4. What is the common ratio?

AleksAgata [21]

Answer:

$\large \boxed{2}$

Step-by-step explanation:

The formula for the nth term of a geometric sequence is

aₙ = a₁rⁿ⁻¹

In your geometric sequence, a₁ = 4 and a₁₃ = 16 384.

$\begin{array}{rcl}16384 & = & 4r^{(13 - 1)}}\\16384 & = & 4r^{12}\\4096 & = & r^{12}\\3.6124 & = & 12 \log r\\0.30102 & = & \log r\\r & = & 10^{0.30102}\\ & = & \mathbf{2}\\\end{array}\\\text{The common ratio is $\large \boxed{\mathbf{2}}$}$

Check:

$\begin{array}{rcl}16384 & = & 4(2)^{12}\\16384 & = & 4(4096)\\16384 & = & 16384\\\end{array}$

It checks.

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2 years ago

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vitfil [10]

Answer:

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Step-by-step explanation:

you would take 32 and divide it by.25

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3 years ago

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Step-by-step explanation:

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or

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Step-by-step explanation:

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