2 years ago

Help I can’t solve this at all

Mathematics

1 answer:

qwelly [4]2 years ago

8 0

<h2>Answer: </h2>

We know that,

Length of arc = 2πrθ/360

Length of arc = 2 × 3.14 × 6 × 45/360

Length of arc = 6.28 × 3/4

= 18.84/4

= 4.71units.

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Naddika [18.5K]

$\displaystyle\\
15(2a - 2) = 5(a^2 -1) \\ \\ 
30a - 30 = 5a^2-5\\\\
-5a^2 + 30a -30 + 5 =0\\\\
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5a^2 - 30a +25 = 0~~~~~\Big| : 5 \\\\
a^2 - 6a +5 = 0 \\ \\ 
a_{12}= \frac{-b\pm \sqrt{b^2-4ac}}{2a}= \frac{6\pm \sqrt{36-20}}{2}= \frac{6\pm \sqrt{16}}{2}=\frac{6\pm 4}{2}= \boxed{3\pm 2} \\ \\ 
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2 years ago

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Step-by-step explanation:

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1 year ago

What is 4,328.12 in expanded form?

shepuryov [24]

Hope this helps

Answer = 4,328.12
4,000
300
20
8
0.1
0.02