Question

6x^2 + 12x + 5 = 0

Answer 1

wolf iv solved this but can you help me with something else

Answer 2

well okay

Answer 3

ok can i just post it here or do i need to submit a new one

Answer 4

put it right here

Answer 5

Use the compound interest formulas A = Pe^rt and A = P to solve.

Suppose that you have $11,000 to invest. Which investment yields the greater return over 10 years: 6.25% compounded continuously or 6.3% compounded semiannually? Show your work.

Answer 6

A good calculator is located here:
http://www.1728.org/compint.htm
but I suppose you need it worked out too.

Answer 7

yes please plus i want to understand how to do something like this my self i just dont have a teacher

Answer 8

GEEZ I was trying to atach a graphic and got knocked out of the topic.
I'll try again
This should be the continuously compounded interest formula.

Answer 9

ok

Answer 10

Total = principal * 2.718281828 ^ (rate * years)
11,000 for 10 years @6.25% continually compounded
Total = 11,000 * 2.718281828 ^ (.0625 * 10)
Total = 11,000 * 2.718281828 ^ (.625)
Total = 11,000 * 1.8682459574
Total = 20,550.71

(I checked this with calculator here:
http://www.1728.org/compint.htm

Answer 11

so thats the answer?

Answer 12

Other problem
Total = principal * (1 + rate/n)^years*n
where n = 2 because it is semi-annual
Total = 11,000 * (1+ (.063/2))^10*2
Total = 11,000 * (1.0315)^20
Total = 11,000 * 1.8594506053

Total = 20,453.96

(Rechecked with calculator)

Answer 13

The first 1 is for the continuously compounded interest
The second 1 is for semi-annual

Answer 14

out of curiosity where did you get the plug in for e

Answer 15

In other words what is "e"?

Answer 16

yes

Answer 17

"e" is the base of natural logarithms and (like PI) can be carried out to millions of digits
You'll probably never need more than
2.718281828459

Answer 18

Here's what Wikipedia has to say about "e"
http://en.wikipedia.org/wiki/E_(mathematical_constant)

Answer 19

ok so how come for the second problem you didnt use that set of numbers

Answer 20

Because the first formula I used is ONLY for continuously compounded interest problems.

The second formula I used is for semi-annual, quarterly, monthly, daily compounding

Answer 21

ok

Answer 22

thank you

Answer 23

Yeah, this compounded interest math gets complicated.
In just another day I'll be posting ANOTHER page to my website about compound interest.

Answer 24

ok

Answer 25

u r welcome quick 24