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kramer
2 years ago
6

What the answer please​

Mathematics
2 answers:
Nady [450]2 years ago
7 0
It is b please mark Brainliest
devlian [24]2 years ago
5 0

Answer: A

Step-by-step explanation:

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Can somebody please help me
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Answer:

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Step-by-step explanation:

d+e=2

d=2-e-----(1)

d-e=4-----(2)

substituting (1) in (2)

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e=-1-----(3)

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d=2-(-1)

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Me ajudem com a 3º questão
Alisiya [41]

I can't read that language but I'll guess it says write a second degree equation then solve for n when d=10.

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Answer: n² - 3n - 20 = 0

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That means there are no polygons with 10 diagonals.

n = \frac 1 2(3 \pm \sqrt{89})

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2 years ago
How do I solve this problem using the substitution method?
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defon
Common difference r will be the difference between next two values of number row, so we take e.g. second minus first: r=9.4-6=3.4. You can see, that this value is constant as we go through next pairs of values.
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