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OverLord2011 [107]

2 years ago

6

on a piece of paper, graph this system of inequalities. Then determine which region contains the solution to the system. a pictu

re with options shown. I'll award brainliest. Thank you :)

1 answer:

slava [35]2 years ago

4 0

C. Region D

Step-by-step explanation:

Just plug the equations into desmos the calculator will graph it and show you with colors where the solution is.

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I need help with this question, please help me for 10 points?

IgorC [24]

Answer:

c

Step-by-step explanation:

your right

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2 years ago

What’s variance and how do I figure it oit

Andreas93 [3]

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2 years ago

A weed called the raindrop vine is known for growing at a very fast rate. It can grow up to 0.75 feet per day. How fast in inche

jarptica [38.1K]

1 foot = 12 inches.

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3 years ago

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What are the domain and range of the function f(x)=sqrt(x-7) +9

GenaCL600 [577]

Domain: x ≥ 7

Range (7,9)

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3 years ago

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The amount A of the radioactive element radium in a sample decays at a rate proportional to the amount of radium present. Given

slavikrds [6]

Answer:

a) $\frac{dm}{dt} = -k\cdot m$ , b) $m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$ , c) $m(t) = 10\cdot e^{-\frac{t}{2438.155} }$ , d) $m(300) \approx 8.842\,g$

Step-by-step explanation:

a) Let assume an initial mass m decaying at a constant rate k throughout time, the differential equation is:

$\frac{dm}{dt} = -k\cdot m$

b) The general solution is found after separating variables and integrating each sides:

$m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }$

Where $\tau$ is the time constant and $k = \frac{1}{\tau}$

c) The time constant is:

$\tau = \frac{1690\,yr}{\ln 2}$

$\tau = 2438.155\,yr$

The particular solution of the differential equation is:

$m(t) = 10\cdot e^{-\frac{t}{2438.155} }$

d) The amount of radium after 300 years is:

$m(300) \approx 8.842\,g$

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3 years ago

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