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3 years ago

The circumference of a circle can be found using the formula c=2 pi r.

1 answer:

6 0

The formula for the circumference of a circle is C = 2πr, where r is the radius and C is the circumference. The equation solved for r is r =c/π2 .

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Please help!!! ASAP someone please

murzikaleks [220]

Answer:

0.31 yr

Step-by-step explanation:

The formula for interest compounded continuously is

$FV = PVe^{rt}$

FV = future value, and

PV = present value

If FV is twice the PV, we can calculate the doubling time, t

$\begin{array}{rcl}2 & = & e^{rt}\\\ln 2 & = & rt\\t & = & \dfrac{\ln 2}{r} \\\end{array}$

1. Brianna's doubling time

$\begin{array}{rcl}t & = & \dfrac{\ln 2}{0.065}\\\\& = & \textbf{10.663 yr}\\\end{array}$

2. Adam's doubling time

The formula for interest compounded periodically is

$FV = PV\left (1 + \dfrac{r}{n} \right )^{nt}$

where

n = the number of payments per year

If FV is twice the PV, we can calculate the doubling time.

$\begin{array}{rcl}2 & = & \left (1 + \dfrac{0.0675}{4} \right )^{4t}\\\\&= & (1 + 0.016875 )^{4t}\\& = & 1.016875^{4t}\\\ln 2& = & 4 (\ln 1.01688)\times t \\& = & 0.066937t\\t& = & \dfrac{\ln 2}{0.066937}\\\\& = & \textbf{10.355 yr}\\\end{array}$

3. Brianna's doubling time vs Adam's

10.663 - 10.355 = 0.31 yr

It would take 0.31 yr longer for Brianna's money to double than Adam's.

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3 years ago

A BOOKMARK

Angelina_Jolie [31]

Answer:

... ....................

8 0

3 years ago

The sum a 8 and a number h is 12

Artyom0805 [142]

H would equal to 4 (8+4=12)

7 0

3 years ago

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-5(1-5x) + 5(-8x-2)= -4x -11x -15 solve step by step

almond37 [142]

Answer:

do brackets or pherenthisies first then do x devide wich ever comes first then if not + or - wich ever comes first

then do all that you get your awnser my plueshure helping you bye have a good day

Step-by-step explanation:

4 0

3 years ago

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Given that

Pepsi [2]

Answer:

The answer would have to be 76

Step-by-step explanation:

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3 years ago