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sleet_krkn [62]
4 years ago
15

From a to D which graph represents a function ? And why ?

Mathematics
1 answer:
tatiyna4 years ago
5 0
Option D I believe because it is the only one that passes the vertical line test (the test that for every X value, there is only 1 Y value).
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Which table shows a proportional relationship between X and Y?
tatuchka [14]

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2 years ago
The measure of an angle is 14.2°. What is the measure of its complementary angle
grigory [225]
Complementary angles are the angles whose sum makes 90 degrees. According to the question, the other angle is 14.2 degrees more than the complementary angle. Therefore, 14.2° will be added to the other angle.
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Allisa [31]
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should be it!

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Problem PageQuestion The mass of a radioactive substance follows a continuous exponential decay model, with a decay rate paramet
asambeis [7]

Answer:

<em>t = 1.51</em>

Step-by-step explanation:

<u>Exponential Model</u>

The exponential model is often used to simulate the behavior of a magnitude that either grow or decay in proportion to the existing amount of that magnitude.

The model can be expressed as

M=M_oe^{kt}

In this case, Mo is the initial mass of the radioactive substance and k is a constant which value is positive if the mass is growing or negative if the mass is decaying.

The value of k is not precisely given in the question, we are assuming k=-0.2

The model is now

M=M_oe^{-0.2t}

We are required to compute the time it takes the mass to reach one-half of its initial value:

\displaystyle \frac{M_o}{2}=M_oe^{-0.2t}

Simplifying

\displaystyle \frac{1}{2}=e^{-0.2t}

Taking logarithms

\displaystyle ln\frac{1}{2}=ln(e^{-0.2t})=-0.2t

Solving for t

\displaystyle t=-\frac{ln\frac{1}{2}}{0.2}=1.51

6 0
3 years ago
If 9999 = 4, 8888 = 8, 1816 = 6, 1212 = 0, then 1919 =?
Morgarella [4.7K]

Answer:

1919=0+1+0+1=2

Step-by-step explanation:

4 0
3 years ago
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