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Dmitriy789 [7]
3 years ago
9

Lloyd's account has a balance of −$53.50. If he owes the bank more than $40, his account gets closed. Which of the following is

true about Lloyd's account? It gets closed, because |−53.50| > 40 It stays open, because |−53.50| > 40 It stays open, because |−53.50| > 40 It gets closed, because |−53.50| < 40
Mathematics
2 answers:
Paul [167]3 years ago
7 0

Answer:

A will be the answer

Dima020 [189]3 years ago
4 0

Lloyd's bank account will be closed because he owes more than $40, he would have to pay the bank $53.50 to no longer owe them any money.

It gets closed because |-53.50| > 40

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part b is: if the energy release of one earthquake is 10,000 times that of another, how much larger is the Richter scale reading
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You could use the information from part A to get B. I'm not sure if you want A or not, so I'll do it as well.

A

Eo = 10^4.4 Joules

E = 2 * 10^15

Formula

M = (2/3) log (E/Eo)

M = 2/3 * log (2 * 10^15/10^(4.4) )

M = 2/3 * log( 7.9621* 10^10)

M = 2/3 * 10.901

M = 7.26735 on the Richter scale. That is a huge amount of energy.

Part B

Suppose that you use Eo and your base. Eo is 10^4.4

Now the new earthquake is E = 10000 * Eo

So what you get now is M = (2/3)* Log(10000 * Eo / Eo )

The Eo's cancel out.

M = 2/3 * log(10000)

M = 2/3 of 4

M = 8/3

M = 2.6667 difference in the Richter Scale Reading. It is still an awful lot of energy.

What this tells you is that if the original reading was (say) 6 then the 10000 times bigger reading would 8.266667

Answer: M = 2.6667


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