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Leno4ka [110]
3 years ago
14

The angles of a triangle are 99??, 3x??, and x + 5??.

Mathematics
1 answer:
Anit [1.1K]3 years ago
3 0
Since we know a triangle only has 180 degrees we can say:

99+3x+x+5=180

Then we can solve for x:

4x+104=180
4x=76

x=19


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Step-by-step explanation:

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f(t)=a(r)^t

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Our initial amount <em>a </em>is 185 grams.

So, by substitution, we have:

\displaystyle f(t)=185\big(\frac{1}{2}\big)^t

Where <em>f(t)</em> denotes the amount of grams left after <em>t</em> half-lives.

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\displaystyle f(6)=185\big(\frac{1}{2}\big)^6

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\displaystyle f(6)=185\big(\frac{1}{64}\big)\approx2.89\approx 3

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