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3 years ago

Which choice is the explicit formula for the following geometric sequence?0.5, -0.1, 0.02, -0.004, 0.0008, ...

1 answer:

8 0

$a_1=0.5\\a_2=-0.1\\a_3=0.02\\a_4=-0.004\\a_5=0.0008\\\\a_n=a_1\cdot q^{n-1}\\\\q=a_2:a_1\to q=-0.1:0.5=-0.2\\\\a_n=0.5\cdot(-0.2)^{n-1}=0.5\cdot(-0,2)^n\cdot(-0.2)^{-1}\\\\=0.5\cdot(-0.2)^n\cdot(-5)=-2.5\cdot(-0.2)^n\\\\\boxed{a_n=-2.5\cdot(-0.2)^n}$

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riadik2000 [5.3K]

Step-by-step explanation:

you should only make one equation:

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Answer:

Length = 200 m

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Step-by-step explanation:

Perimeter of the rectangular field = Total cost ÷ rate per metre

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2 years ago

Joseph owns a hot dog stand and sells specialized hot dogs. He charges $1.50 for a plain hot dog and then an additional $0.50 fo

Lilit [14]

Hot Dog Stand

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The y-coordinate of the y-intercept of the linear function is equal to $\$1.5$

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Hamburgers Stand

Let

C--------> total cost of the hamburger

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we know that

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The y-coordinate of the y-intercept of the linear function is equal to $\$2.5$

That means -------> This is the cost of the hamburger without topping

therefore

<u>the answer is</u>

The linear equation of the hamburger cost is equal to

$C=0.25x+2.50$

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3 years ago

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Please help with #6. How do I find all of the real zeros? Thank you!!!

Morgarella [4.7K]

I'm assuming you're referring to problem 6. You are asked to find the number of x intercepts or roots, which is another term for "zero". I prefer the term root or x intercept as "zero" seems misleading. Anyways, all we do is count the number of times the graph crosses the x axis. This happens 4 times as shown in the attached image below. I have marked these points in red. The graph can directly cross over the x axis, or it can touch the x axis and then bounce back. Either way, it is considered an x intercept.

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4 years ago

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melamori03 [73]

<u>Answer: </u>

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<u>Solution: </u>

Information provided in the question seems to be less . so assuming following two things.

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When you buy 2 tees , n = 2

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