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marissa [1.9K]
3 years ago
9

Given the sequence below, what is the 9th term? 2, 1, 4, -1, 6, ...

Mathematics
1 answer:
jolli1 [7]3 years ago
8 0

Answer:

The 9th term would be 10.

Step-by-step explanation:

Each of the odd terms is 2 more than the previous. We do not even need to look at the even terms to find the 9th one.

2, odd, 4, odd, 6, odd, 8, odd, 10

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AlladinOne [14]
(a) 95 = (x+7)*(x-7)

(b) 95 = (x+7)*(x-7) 
Expand the brackets:
95 = x² -7x + 7x -49 = x² - 49
Subtract x² from both sides:
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Subtract 95 from both sides:
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Take the square root of 144:
x = ± squareroot of 144
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x = 12 because you cannot have a negative age so Trina is 12 years old.
     
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Step-by-step explanation:

From the question, Erica and John are making brackets and Erica makes 25 bracelets while John makes m more bracelets than Erica. The total number of bracelets made will be:

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