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USPshnik [31]
3 years ago
10

I need help plzzzzzzzz

Mathematics
2 answers:
lukranit [14]3 years ago
8 0
D is the correct answer

Nastasia [14]3 years ago
6 0
The answer is letter C.
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A sequence is defined by f(0) = -20, f(n) = f(n-1) - 5 forn > 1.
bulgar [2K]

Answer:

1. Proved down

2. proved down

3. f(10) = -20 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5

Step-by-step explanation:

Let us explain how to solve the question

∵ f(0) = -20, f(n) = f(n - 1) - 5 for n > 1

→ That means we have an arithmetic sequence with constant

   difference -5 and first term -20

1. → f(1) means we need to find the second term, which equal the

      term - 5

∵ f(1) means n = 1

∴ f(1) = f(1 - 1) - 5

∴ f(1) = f(0) - 5

∵ f(0) = -20

∴ f(1) = -20 - 5 → Proved

2. → f(3) means we need to find the third term, which equal the

   second term - 5

∵ f(3) means n = 3

∴ f(3) = f(3 - 1) - 5

∴ f(3) = f(2) - 5

→ f(2) = f(1) - 5

∵ f(1) = -20 - 5

∴ f(2) = [-20 - 5] - 5 = -20 - 5 - 5

∴ f(3) = [-20 - 5 - 5] - 5

∴ f(3) = -20 - 5 - 5 - 5 → Proved

3. → From 1 and 2 we notice that the number of -5 is equal to n,

      at n = 1 there is one (-5), when n= 3 there are three (-5)

∵ n = 10

∴ There are ten (-5)

∴ f(10) = -20 - 5(10)

∴ f(10) = -20 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 → Proved

6 0
3 years ago
Molly and Tess like to shop at the mall. Molly has $280 in her bank account and spends $40 every trip
Kobotan [32]
8 times. $280 divided by 40
8 0
3 years ago
A certain spinner has equally sized slices. The probability of landing on a green slice is 1/4. What are the odds in favor of la
garri49 [273]
THE PROBABILITY IS likely to be one half half of the slice of the pizza
7 0
3 years ago
What is -2x-x+8<br> I'm too tired to do this lol
klemol [59]
The correct answer to this would be -3x+8
5 0
3 years ago
Read 2 more answers
Is this a polygon<br> Yes or no
Kobotan [32]

No its not a polygon.

It has a curve where as a polygon is a plane figure with at least three straight sides and angles

Thanks for the help xoxoate!

6 0
2 years ago
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