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almond37 [142]
3 years ago
8

Unit 8: Right Triangles & Trigonometry Homework 3

Mathematics
1 answer:
Genrish500 [490]3 years ago
5 0
Can you post the image because I need to clarify in your trigonometry hw
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A salesman sold twice as much pears in the afternoon than in the morning. If he sold 360 kilograms of pears that day, how many k
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Answer: 240 kg

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Solve equation <br> 9x^2+7x=3
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A sequence is defined by the formula f(n+1)=f(n)-3. If f(4)=22, what is f(1)?
Vlad [161]
<h3>Answer: Choice C) 31</h3>

==============================================

Explanation:

The recursive rule

f(n+1)=f(n)-3

can be rearranged to

f(n) = f(n+1)+3

after adding 3 to both sides

----------------

Now let's say we plug in n = 3

f(n) = f(n+1)+3

f(3) = f(3+1)+3

f(3) = f(4)+3

f(3) = 22+3

f(3) = 25

Repeat for n = 2

f(n) = f(n+1)+3

f(2) = f(2+1)+3

f(2) = f(3)+3

f(2) = 25+3

f(2) = 28

Each time we keep adding 3 to get the previous term (since the original recursive rule says to subtract 3 to get the next term; we just go backwards of what the instructions say).

Lastly, we can find that f(1) = f(2)+3 = 28+3 = 31 making the answer to be choice C.

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3 years ago
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