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Over [174]
3 years ago
8

What is the value of x? *

Mathematics
1 answer:
EleoNora [17]3 years ago
6 0

In a circle, the parts of the diagonals multiply to equal each other, so 6·4=2x.

2x = 24, x = 12.

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Can we get a picture?
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5 0
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Plutonium-240 decays according to the function L where o
PIT_PIT [208]

Answer:

\boxed{\textbf{1700 yr}}

Step-by-step explanation:

-\dfrac{\text{d}L}{\text{d}t} = kL\\\\\dfrac{dL}{L}=-kdt\\\\\ln L = -kt + C\\\text{At t = 0, L = L$_{0}$, so C = $\ln L_{0}$}\\\ln L = -kt + \ln L_{0}\\\ln L_{0} - \ln L = kt\\\\\ln \dfrac{L_{0}}{L} =kt

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Calculation:

\ln \dfrac{24}{20} =0.000 11t\\\\\ln 1.2 = 0.000 11t\\\\0.1823 = 0.000 11t\\\\t = \dfrac{0.1823}{0.000 11} = \textbf{1700 yr}\\\\\text{It will take } \boxed{\textbf{1700 yr}}\text{ for the polonium to decay to 20 g}

8 0
3 years ago
a banner is made of a sqiare and a semocircle. the square has side lengths of 26 inches. one side of the square is also the diam
tamaranim1 [39]
ARea = area of square + area of semicircle

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        = 941.46  square inches  to nearest hundredth
8 0
3 years ago
Read 2 more answers
Which phrase is the best description of the association between variables X and Y?
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The variables have a negative association/correlation, because when one value increases (ex: x) the other decreases (see y)
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so the answer is it is a "moderate negative association"
3 0
3 years ago
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