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zepelin [54]
2 years ago
9

How long will it take for an investment to double in valve if it earns 12.25% compounded continuously ?

Mathematics
1 answer:
goblinko [34]2 years ago
6 0

Answer:

At the given rate it will take 3 years and 5 months for the investment to be doubled

Step-by-step explanation:

Here, we want to get the amount of time it will take an investment that earns 12.25% to double if it’s compounded continuously

We can have the exponential relation as follows;

P = I( 1 + r)^n

P is the present value, let us call this 2x as it two times the initial

I is the initial value which is x in this case

r is the interest rate = 12.25% which is same as 12.25/100 = 0.1225

n is the number of years which we want to calculate

Thus, we have

2x = x( 1 + 0.1225)^n

2 = 1.225^n

Ln 2 = n ln 1.225

n = ln 2/ln 1.225

n = 3.42

if 3.42 is the number of years, let us have 0.42 in months

That will be 0.42 * 12 = 5.04

So we are looking at the investment being doubled at 3 years and 5 months

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20 POINTS!!!! PLEASE HELP ME!!!!!!
Fittoniya [83]

Answer:

Step-by-step explanation:

a)

2.64÷3.3  ( said  2.64 divided by 3.3)

3.3√2.64  ( yes I know it's not the division sign but it's as close as we can get)

2.64 / 3.3

All three representations  are the same. each say  divide 2.64 by 3.3. If you're thinking that last one looks more like a fraction, you're right, but.. that's also what that means.   I'm showing these different ways to express the idea of division b/c it's part of what is involved with showing the work and understanding it.

so, to do the above let's move the decimal point to the right .. and do we want to move it one or two places.  :?  one because of 3.3 or two , because of 2.64, well we want to move it so we don't have to think about it in the problem... so move it the biggest amount that you need to, get the the decimil out of both numbers.. since the 2.64 needs two moves to the right of the decimal... use 100 times  to move it 2 places, If you needed 3 then use 1000, 4 , 10,000 ect ect... see the pattern?

so

100(3.3 √ 2.64 )

move the decimal point in both 2 places right

330.0 √ 264.0

I put the extra zeros in, just so you can see the decimal easy.  The zeros to the right of the decimal make no difference here.

now I'll know to put the number that I use to divde with above the zero,  of 264.0  .. and i'll think about how many times 3 goes into 26 ,without going over.  3*8 = 24 so I want an 8

    ↓ ←  <u> ←  ← 0.8</u>

330.0 √ 264.0      ( multiply  8 * 330 = 2640 )

    ↓ →  <u> -264 .0   </u>    ( subtract 2640 from the number above )

                       0

you are done with that one, since there is zero left over and   0.8 is the answer

b)

0.324 ÷ 0.27

0.27 √ 0.324

0324 / 0.27

1000( 0.27 √ 0.324)

270 √ 324.0

  ↓  ←<u>  ←  1.2</u>

270 √ 324.0

 ↓→  <u> - 270</u>   ( multiply by the 1 )

 ↓    =      54

 ↓→     <u>   - 540</u>  (multiply by the 2 )

                  0

since there is zero left over you are done. The answer is  1.2

C)

0.32 ÷ 0.16

0.16 √ 0.32

100(0.32 / 0.16)

↓<u> ←   2</u>

16 √32

↓→<u>  -32</u>  ( multiply 16 * 2 = 32 )

         0

zero left over you are done.  the answer is 2 :)

d)

16.92 ÷ 9.4

9.4 √ 16.92

100(16.92 / 9.4)

  ↓  <u> ←  ←  1.8</u>

940 √1692.0

 ↓→→ <u>- 940      </u> (multiply by 1 )

 ↓        7520

 ↓→  <u>-  7520    </u>  (multiply by 8 )

                 0

since there is zero left you are done,  The answer is  1.8

that was a lot, really nobody has talked or told you how to do this before?  

where is your teacher?  :/  

8 0
2 years ago
Why can a problem with extra information be difficult to solve?
Semenov [28]
I think it is more difficult because it is more for your brain to have to  process at once .
7 0
2 years ago
Circle with O as the centre. RS is a tangent to the circle. Calculate:
SCORPION-xisa [38]

Answer:

It is a right triangle.

So, using Pythagorean theorem: OS² = OR² - RS²

OR = r (radius) + 8

OS = r

RS = 16

=> r² = (r+8)² - 16²

r² = r² + 16r + 64 - 256

r² = r² + 16r - 192

16r = 192

r = 192 / 16 = 12cm²

a) 12 cm²

b) 12 + 8 = 20 cm²

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2 years ago
Let f(x) = -2x + 7 and g(x) = -6x + 3. Find (f o g) and state its domain.
Vladimir79 [104]

(f\circ g)(x) = -2(-6x+3) + 7 = 12x - 6 + 7 = 12x + 1

The domain is all real numbers as a composition of two linear functions have no restrictions (all linear functions have domain of R)

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3 years ago
Lin read 44 pages in 132 minutes. Diego read 35 pages in 140 minutes. Who is reading at a faster rate, Lin or Diego? Show and Ex
Oduvanchick [21]

Answer:

Diego

Step-by-step explanation:

divide 132 minutes by 44 pages and you get 3 pages per minute, then divide 140 minutes by 35 pages and you will get 4 pages per minute. so Diego reads 1 more page a minute than lin. hope i helped you :)

5 0
3 years ago
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