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3 years ago

Determine a series of transformations that would map figure H onto figure I

Mathematics

2 answers:

goldenfox [79]3 years ago

6 0

Answer:

Your answer would be A reflection over the x-axis followed by a rotation of 90° counterclockwise about the origin.

Step-by-step explanation: Since you would first rotate over the x- axis and then rotate it by 90 degrees counterclockwise over the origin

Ganezh [65]3 years ago

3 0

Answer:

It's reflecting

Step-by-step explanation:

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4 years ago

Radium-228 has a half-life of 5.75 years. What is the decay rate for radium-228?

artcher [175]

Decay rate for Radium-228 is 0.01205

Step-by-step explanation:

The half life of radium-228 is 5.75 years. We need to find the decay rate for radium.

The formula used is:

$ln\frac{N_o}{N_t}=-\lambda t$

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N_t = amount of radioactive particles are time (t)

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t = time

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Putting values in formula and solving:

$ln\frac{N_o}{N_t}=-\lambda t$

$ln(0.5)=-\lambda *5.75\\-\lambda=\frac{ln(0.5)}{5.75}\\-\lambda=\frac{-0.69}{5.75}\\-\lambda=-0.1205\\\lambda=0.1205$

So, Decay rate for Radium-228 is 0.01205.

Keywords: Decay Rate

Learn more about Decay Rate at:

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