3 years ago

Multiply (6+2i) (6-2i)

1 answer:

8 0

Answer:

$(6 + 2i)(6 + 2i) \\ 6(6 + 2i) + 2i(6 + 2i) \\ 36 + 12i + 12i + 4 {i}^{2} \\ 36 + 24i + 4 {i}^{2} \\ 4 {i}^{2} + 24i + 36$

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Find the common ratio and an explicit form in each of the following geometric sequences.

Margaret [11]

Answer:

The explicit form is $a_{n}=162(2/3)^{n-1}$

Step-by-step explanation:

The explicit form of a geometric sequence is given by:

$a_{n}=ar^{n-1}$

where an is the nth term, a is the first term of the sequence and r is the common ratio.

In this case:

a=162

The value of the common ratio is obtained by dividing one term by the previous term.

For the first and second terms:

108/162=2/3

For the second and third terms (In order to prove that 2/3 is the common ratio)

72/108=2/3

Therefore:

r=2/3

Replacing a and r in the formula:

$a_{n}=162(2/3)^{n-1}$

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susan made 4 dozen cupcakes she placed them in boxes containing 4 cupcakes and sold each box for 8.75. how much money did she ea

Natasha_Volkova [10]

Answer: Susan has 105 dollars

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2 years ago

Antar is flying a triangular-shaped kite. It has a height of 4 1/2 feet and a base of 5 3/4 feet. What is the area of Antar's ki

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Read 2 more answers

Someone that understand this can help me out?

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Plug in -2 to x in the formula
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