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3 years ago

(555) what is the value of 5 in the tens place

Mathematics

2 answers:

creativ13 [48]3 years ago

7 0

If you have 555, 50 would be how many tens you have. so you would have 5

Dennis_Churaev [7]3 years ago

6 0

The answer is 50 because the vaule of 5 tens is 50

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Answer:

A. $\mathtt{\dfrac{dA}{dt}|_{t=2}=644.15}$

B. $\mathtt{\dfrac{dA}{dt}|_{t = 5.79}= 839.86 }$

Step-by-step explanation:

Given that:

An investment of Amount = $8000

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The objective is to :

A) Find the instantaneous rate of change of the amount in the account after 2 year(s).

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where;

$A = (8000) \ e ^{0.7t}$

The instantaneous rate of change = $\dfrac{dA}{dt}$

$\dfrac{dA}{dt} = \dfrac{d}{dt}(8000 \ e ^{0.07t} )$

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At t = 2 years; the instantaneous rate of change is:

$\dfrac{dA}{dt}|_{t=2}= 560 e^{0.07 \times 2}$

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(B) Find the instantaneous rate of change of the amount in the account at the time the amount is equal to $12,000.

Here the amount = 12000

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$\dfrac{12000 }{8000}= e^{0.07 \ t}$

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㏑(1.5) = 0.07 t

0.405465 = 0.07 t

t = 0.405465 /0.07

t = 5.79

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At t = 5.79

$\dfrac{dA}{dt}|_{t = 5.79}= 560 e^{0.07 \times 5.79}$

$\mathtt{\dfrac{dA}{dt}|_{t = 5.79}= 839.86 }$

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