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zhannawk [14.2K]
3 years ago
8

A scientist is measuring the amount of radioactive material in an unknown substance. When he begins measuring, there are 12.8 gr

ams of radioactive substance. Nine days later, there are 7.33 grams. After 14 days, there are 5.38 grams. After 30 days, there are 2.00 grams. Assuming that the decay is exponential, find the equation that determines the number of grams remaining after x days and use the equation to determine the amount of radioactive material remaining after 50 days.
Note: Once you find the equation, round a and b to the nearest hundredth to determine the solution.



0.58 g



3.33 g



3.27 g



0.56 g
Mathematics
1 answer:
maria [59]3 years ago
7 0
0.56g is what I got with good ol' Desmos
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Answer:

(-7,-2)

Step-by-step explanation:

Graphed on the Cartesian plane.

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Both points are at x = -7. When reflected across the x-axis, the point is seems to have moved lower than from its original position.

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aleksandrvk [35]
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As can be seen above, it can be seen that the continuos derivative of sin (x) is a sequence which repeats after every four terms.

Thus,

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vagabundo [1.1K]

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<u>Step-by-step explanation:</u>

The length and width of the rectangle have been ROUNDED to the nearest tenth. Let's calculate what their actual measurements could be:

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<em>87.25 is the lowest number it could be that would round it UP to 87.3</em>

<em>87.34 is the highest number it could be that would round DOWN to 87.3</em>

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<em>51.75 is the lowest number it could be that would round it UP to 51.8</em>

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To find the Area of the upper bound, multiply the highest possible length and the highest possible width:

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