4 years ago

Which is an example of using the distributive property to multiply -5x^3(3x^2+3x-1) ?

Mathematics

1 answer:

Mkey [24]4 years ago

7 0

Answer: -15x5 - 15x4 + 5x3

Step-by-step explanation:

(-5x3)(3x2 + 3x - 1)

-15x5 - 15x4 + 5x3

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$a_n = 128\bigg(\dfrac{1}{2}\bigg)^{n-1}$

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We are given the following in the question:

The numbers of teams remaining in each round follows a geometric sequence.

Let a be the first the of the geometric sequence and r be the common ration.

The $n^{th}$ term of geometric sequence is given by:

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$\dfrac{16}{4} = \dfrac{ar^3}{ar^5}\\\\4}=\dfrac{1}{r^2}\\\\\Rightarrow r^2 = \dfrac{1}{4}\\\Rightarrow r = \dfrac{1}{2}$

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