3 years ago

Can someone please answer. There is one problem. There's a picture. Thank you!

Mathematics

1 answer:

worty [1.4K]3 years ago

4 0

For the question, your answer would be the first one; It doesn't exist.

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A particular isotope has a half-life of 74 days. If you start with 1 kilogram of this isotope, how much will remain after 150

shtirl [24]

$\bf \stackrel{150~days}{\textit{Amount for Exponential Decay using Half-Life}} \\\\ A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &1\\ t=\textit{elapsed time}\dotfill &150\\ h=\textit{half-life}\dotfill &74 \end{cases} \\\\\\ A=1\left( \frac{1}{2} \right)^{\frac{150}{74}}\implies A=1\left( \frac{1}{2} \right)^{\frac{75}{37}}\implies \boxed{A\approx 0.24536}$

$\bf \stackrel{300~days}{\textit{Amount for Exponential Decay using Half-Life}} \\\\ A=P\left( \frac{1}{2} \right)^{\frac{t}{h}}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &1\\ t=\textit{elapsed time}\dotfill &300\\ h=\textit{half-life}\dotfill &74 \end{cases} \\\\\\ A=1\left( \frac{1}{2} \right)^{\frac{300}{74}}\implies A=1\left( \frac{1}{2} \right)^{\frac{150}{37}}\implies \boxed{A\approx 0.060202}$

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3 years ago

Average daily temperature as a function of the day of the year. Is it continous or discontinous function? Why?

S_A_V [24]

Answer:

continous

Step-by-step explanation:

the seasons are based on the rotation and angle of earth

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3 years ago

Assume that y varies inversely with x. If y= 4 when x = 4, find y when x = 2. <br> y=[ ? ]

ahrayia [7]

Answer:

Step-by-step explanation:

y inversely proportional to x

y=1k/x

4=k/4

k=4×4

k=16

to find y

y=16/4

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3 years ago

We call a number peachy if every digit in the number is either a 3 or next to a $3.$ For example, the numbers 333, 83, 303 and 3

Kobotan [32]

Answer:

Step-by-step explanation:

33-1

3r-9

r3-8

r means random digit

9+8+1=19

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3 years ago

What is the mean of this data set? 12,17,16,10,20,13,14,14,12,12,19,18

Gemiola [76]

Answer:

14.75 :) please give me brainliest :)

Step-by-step explanation:

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4 years ago

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