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3 years ago

I NEED HELP.. :( Someone please help me with this edge unity question

Mathematics

1 answer:

nasty-shy [4]3 years ago

7 0

Answer:

I think its a,c,d,f, and g

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An investment of $8,000 earns interest at an annual rate of 7% compounded continuously. Complete parts (A) and (B) below. Click

Sergeeva-Olga [200]

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

earns at an annual rate of interest = 7% = 0.07 compounded continuously

The objective is to :

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

we all know that:

$A = Pe^{rt}$

where;

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

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

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

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

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

$\dfrac{dA}{dt}= 560 e^{0.07 \ t}$

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

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

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

(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

$12000 = (8000)e^{0.07 \ t}$

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

$1.5= e^{0.07 \ t}$

㏑(1.5) = 0.07 t

0.405465 = 0.07 t

t = 0.405465 /0.07

t = 5.79

$\dfrac{dA}{dt}= 560 e^{0.07 \ t}$

At t = 5.79

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

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

7 0

3 years ago

Help please I don’t know what the answer is

Dmitry [639]

Answer:

Step-by-step explanation:

becuz

6 0

3 years ago

20 males drink tea

bonufazy [111]

Answer:21 male drink only coffee

The probability of the probability that any person is male is 0,21

but if you need the probability of the males is 0,57

Step-by-step explanation:

number of people:100

number of males:57

number of males whos drink only coffee:21

number of males whos drink only coffee / number of people= $\frac{21}{100}=0,21$

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3 years ago

Which is the solution of x/5 -10 =20 ?

andreyandreev [35.5K]

Add 10 to both sides

x/5 = 2 + 10

Simplify 20 + 10 to 30

x/5 = 30

Multiply both sides by 5

x = 30 × 5

Simplify 30 × 5 to 150

6 0

3 years ago

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Plz help me with this math question <br><br> 3 more questions to do

denis-greek [22]

Answer:

1308

Step-by-step explanation:

PEMDAS has us do 6^4 first which is 1296. Then we can do 6*2 which is 12 then 12 + 1296 is 1308.

4 0

3 years ago

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