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Marizza181 [45]
3 years ago
14

Cedric can swim a lap in 23 3/5 seconds Jason can swim a lap in 21.4 seconds How much faster can Jason swim than Cedric?

Mathematics
1 answer:
mr Goodwill [35]3 years ago
8 0
23 3/5 = 23.6

23.6 - 21.4 = 2.2 (or 2 1/5)

so Jason can swim 2.2 seconds (or 2 1/5 seconds) faster then Cedric
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Explanation:

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Firlakuza [10]
The amount of substance left of a radioactive element of half life, t_{\frac{1}{2}} after a time, t, is given by:

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Given that <span>potassium-40 has a half life of approximately 1.25 billion years.

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0.1=100\left( \frac{1}{2} \right)^ \frac{t}{1.25}} \\  \\ \Rightarrow\left( \frac{1}{2} \right)^ \frac{t}{1.25}}=0.001 \\  \\ \Rightarrow\frac{t}{1.25}\ln\left( \frac{1}{2} \right)=\ln(0.001) \\  \\ \Rightarrow \frac{t}{1.25}= \frac{\ln(0.001)}{\ln\left( \frac{1}{2} \right)} =9.966 \\  \\ t=9.966(1.25)=12.5

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3 years ago
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Step-by-step explanation:

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Alex777 [14]

Answer:

b=5V2

Step-by-step explanation:

Area =31 1/4 = b*12.5 sin45/2=b*12.5*V2/2* 1/2=12.5V2/4 *b

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so 125/4= 12.5V2*b/4

12.5V2*b=125

b=125/12.5V2=10/V2=10V2/2=5V2

3 0
3 years ago
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