Aiden invested $43,000 in an account paying an interest rate of 9 1/4 % compounded monthly. Hailey invested $43,000 in an account paying an interest rate of 8 7/8% compounded continuously. To the nearest dollar, how much money would Aiden have in his account when Hailey's money has doubled in value?

Answers

Answer 1

first off let's change the mixed fractions to improper fractions, and let's Hailey's account first.

[tex]\stackrel{mixed}{9\frac{1}{4}}\implies \cfrac{9\cdot 4+1}{4}\implies \stackrel{improper}{\cfrac{37}{4}} ~\hfill \stackrel{mixed}{8\frac{7}{8}}\implies \cfrac{8\cdot 8+7}{8}\implies \stackrel{improper}{\cfrac{71}{8}} \\\\[-0.35em] ~\dotfill[/tex]

[tex]~~~~~~ \textit{Continuously Compounding Interest Earned Amount} \\\\ A=Pe^{rt}\qquad \begin{cases} A=\textit{accumulated amount}\dotfill &\stackrel{43000(2)}{\$86000}\\ P=\textit{original amount deposited}\dotfill & \$43000\\ r=rate\to \frac{71}{8}\%\to \frac{~~ \frac{71}{8}~~}{100}\dotfill &0.08875\\ t=years \end{cases} \\\\\\ 86000=43000e^{0.08875\cdot t}\implies \cfrac{86000}{43000}=e^{0.08875t}\implies 2=e^{0.08875t}[/tex]

[tex]\ln(2)=\ln(e^{0.08875t})\implies \log_e(2)=\log_e(e^{0.08875t})\implies \ln(2)=0.08875t \\\\\\ \cfrac{\ln(2)}{0.08875}=t\implies 7.81\approx t[/tex]

ok, now we know how long it takes for Hailey's money to double, how much money does Aiden have by then?

[tex]~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$43000\\ r=rate\to \frac{37}{4}\%\to \frac{~~ \frac{37}{4}~~}{100}\dotfill &0.0925\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{monthly, thus twelve} \end{array}\dotfill &12\\ t=years\dotfill &\frac{\ln(2)}{0.08875} \end{cases}[/tex]

[tex]A=43000\left(1+\frac{0.0925}{12}\right)^{12\cdot \frac{\ln(2)}{0.08875}}\implies A=43000\left( \frac{4837}{4800} \right)^{\frac{12\ln(2)}{0.08875}}\implies \boxed{A\approx 88311}[/tex]

notice, in Hailey's amount we used the logarithmic value for "t", just to avoid any rounding issues.


Related Questions

You can rewrite the trajectory equation as y = -16(x-1)^2 + 19

Answers

I believe the answer is -16x+35

i think it’s #1 but what’s the work?

Answers

You have to divide first then subtract
You correct the answer is 1

Because sin^-1(-2/5)=-23.578
Plug in cot theta = -2.29
which is approximately equal to 1

So you are right option 1 is correct

is 90,000 mg greater than 90 kg

Answers

Answer:

No, 90 kg is more

Step-by-step explanation:

90 Kilograms is about 198 pounds while 90,000 milligrams is about 0.198 of a pound

Answer:

No 90kg is greater  

Step-by-step explanation:

1000mg= 1 g

90,000/1000= 90

100g= 1 kg

90/100= 0.9kg

PLS HELP ITS ONLY 2 QUESTIONS

For number 6, Cylinder formula 3.14r^2*h (h=height)

For 5, pyramid formula 1/3b*h

5) base=33
Length=34
Height=21



6) pi=3.14
Radius=20
Height=31

Answers

Answer:

Cylinder: 3.14(20)^2*31

3.14(400)*31

1,256*31

becomes the answer 38,936!

Pyramid: 1/3(33)^2*21

1/3(1,089)*21

363*21

7,623!!!

What resolution should images for a nature magazine have?
neutral
high
low

Answers

Answer:

high

Explanation:

Please answer number 2. I don’t understand I’m very stressed right now I need help please.

Answers

Answer:

Smaller

Step-by-step explanation:

Because 7/8 is less than 1 and the sides are smaller which makes the volume smaller

:thumbsup:

Evaluate 49x - 2 when x = 1

Answers

Answer:

49(1) - 2 =

49x1=49

49 - 2 = 47 is your answer

Answer:

47

__________________________________________________________

Solve

If the variable, x has an assigned value, you must multiply the number behind x by the assigned value.

[tex]49 * 1 = 49[/tex]

Lastly, subtract by 2

[tex]49 - 2 = 47[/tex]

________________________________________________________

Questions?

Ask me in the comments box.

cany anybody give me the awnser to this?

Answers

Have a look at the attached image.

According to a weather report, there is a 11% chance it will rain tomorrow. What is the probability that it will not rain tomorrow?

Answers

Answer:

0.78

Step-by-step explanation:

P(R)=22/100=0.22

R=1

1-0.22=0.78

According to a weather report on the probability that it will rain tomorrow, the probability that it will not rain tomorrow is 89%.

What is Probability?

Probability is simply the likelihood that something or an event is to happen.

Now, the probability that an event will not occur is one minus the probability that the event will occur.

Given the data in the question;

Probability that it will rain tomorrow p = 11%Probability that it will not rain tomorrow p⁰ = ?

The probability that it will not rain tomorrow is one minus probability that it will rain tomorrow.

p⁰ = 1 - p

p⁰ = 1 - 11%

p⁰ = 1 - ( 11 / 100 )

p⁰ = 1 - 0.11

p⁰ = 0.89

p⁰ = 89%

Therefore, According to a weather report on the probability that it will rain tomorrow, the probability that it will not rain tomorrow is 89%.

Learn more about probability here: https://brainly.com/question/11234923

Write an expression equivalent to the expressions 12x+16y using the gcf

pls help

Answers

Answer:4(3x+4y)

Step-by-step explanation: the gcf of 12x+16y is 4. we factor out 4 by dividing both terms by 4.

Answer:

[tex]4(3x+4y)[/tex]

Step-by-step explanation:

Hey there!

This would be the correct answer because the GCF of 12 and 16 is 4.

Now that we know that it is 4 we can divide the eqiasion by 4 and  then you get

[tex]4(3x+4y)[/tex]

If you need to ckeck if this answer is corret then you will need to use the distributive property to distribute 4 to 3y and 4y.

The equasion would then look like this

[tex](4(3x)) (4(4y))[/tex]

Next you would need to solve the equasion to get the origional equasion

[tex]12x+16y[/tex]

SOMEONE PLEASE HELP ME WITH THIS!!
IMAGE DOWN BELOW!!
ILL GIVE YOU BRAINLIST ANSWER!!

Answers

Answer:

7.235 cm

Step-by-step explanation:

Pythagorean theory

A^2 + B^2 = C^2

A = 4.7

B = 5.5

4.7^2 + 5.5^2 = C^2

22.09 + 30.25 = C^2

√52.34 = √C^2

7.235 cm ≈ C

Which of the following isatangent

Answers

Answer:

can you re word this i dont understand

Find the median, first quartile, third quartile, and interquartile range of the data.

84,75,90,87,99,91,85,88,76,92,94
median:

first quartile:

third quartile:

interquartile range:
am confused :/

Answers

Answer:

Median: 88, First Quartile: 84, Third Quartile: 92, IQR (interquartile range): 8

Step-by-step explanation:

1. Sort the numbers in numerical order (like 1, 2, 3, etc.)

2. Find the number that is in the middle

3. Find all the quartiles by finding the median of the lower and upper halves of the list

4. Subtract Q1 (quartile 1) and Q3 (quartile 3) like this: Q3 - Q1 to get IQR

A department store buys 300 shirts at a cost of ​$8,100 and sells them at a selling price of ​$30 each. Find the percent markup.

Answers

Answer:

11.11%

Step-by-step explanation:

C.P = $8,100

S.P =$30 ×300

=$9,000

Markup = $9000-$8100

=$900

% markup = 900/8100 × 100

=11.11%

83250/?=74*25
options are:
a) 50
b) 45
c) 40
d) 55
e) none of these​

Answers

Answer:

B. 45

Step-by-step explanation:

Simplyfy 74*25

1850

Now blug in all the values for the "?".

83250/45=1850

This is the only value that staifies this equaton so therefore, B 45

Answer:

45.

Step-by-step explanation:

83250/x=74*25

83250/x=1850

1850 * x = 83250

x = 83250 /1850

= 45

Last year a company spent a total of £2400 on advertising. This year they spent £2796 What was the percentage increase in their spending on advertising?

Answers

Answer:

16.5%

Step-by-step explanation:

[tex] \frac{396}{2400 } \times 100[/tex]

The percentage increase in their spending on advertising will be 16.5%.

What is the percentage?

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates to one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

Last year an organization spent a sum of £2400 on publicizing. This year they burned through £2796.

Then the percentage increase in their spending on advertising will be given as,

P = [(2796 - 2400) / (2400)] x 100

P = (396 / 2400) x 100

P = 0.165 x 100

P = 16.5%

The percentage increase in their spending on advertising will be 16.5%.

More about the percentage link is given below.

https://brainly.com/question/8011401

#SPJ2

James is participating in a 8-mile walk to raise money for a charity. He has received $600 in fixed pledges
and raises $11 extra for every mile he walks. Use a point-slope equation to find the amount he will raise if
he completes the walk.
If he finishes the race, James will raise

Answers

Answer:688

Step-by-step explanation:600+(11x8)=x

x=total

600+88=x

x=688

Pls help me !! Pls help me !!

Answers

Answer:

x= -2

Step-by-step explanation:

Make denominator same

3*(x+10)/12 - 2*(x-10)/12 = 6*(x+10)/12

denominators are same so numerators has to same as well

3*(x+10)-2*(x-10)=6*(x+10)

expand brackets

3x+30-2x+20 = 6x+60

x+50=6x+60

x-6x=60-50

-5x=10

x= -2

Which of the following correctly shows the first step when factoring 3wx + 3wy - 4zx - 4zy by grouping? Please show explanations - also please do not ask any further question other than answering from what is questioned.

A) 3w(x + y) - 4z(x + y)
B) 3w(x + y) + 4z(x - y)
C) 3w(x + y) + 4z(x + y)
D) w(3x + 3y) - z(4x + 4y)

Answers

3w(x+y) - 4z(x+y)

Step-by-step explanation:

Hope it helps......

3w(x + y) + 4z(x - y) correctly shows the first step when factoring 3wx + 3wy - 4zx - 4zy by grouping. Option B

How to solve this

To factor by grouping, we first pair up the terms and then check if there is a common factor in each pair.

The given expression is  3wx + 3wy - 4zx - 4zy

First, put the terms into pairs.

The simplified version of the expression (3wx + 3wy) - (4zx + 4zy) is 3wx + 3wy - 4zx - 4zy.

Next, separate and remove the terms that are the same from each group.

The expression 3w(x + y) - 4z(x + y) can be simplified to (3w - 4z)(x + y).

This is a summary:

In option B, we have correctly put the terms together in pairs and found the common factors in each group. In the first group, we take out 3w from 3wx and 3wy, and in the second group, we take out 4z from 4zx and 4zy. This means that the expression is correct when it is written as factors.

Learn more about factoring by grouping from

https://brainly.com/question/11919471

#SPJ2

Tammy cuts four identical circles from a square piece of black poster board as shown. What is the area of the leftover poster board?
a) 6.240 square feet
b) 5.375 square feet
c) 18.760 square feet
d) 19.625 square feet

Answers

Answer:

B) 5.375

Step-by-step explanation:

The circles are half the square so their diameter will be half the length of the square

d=5/2=2.5

the formula is

area of shaded portion-area out unshaded portion

area of a square= l×l

5×5=25

area of a circle=πr^2

but since there are 4 circles it becomes 4πr^2

r=d/2=2.5/2=1.25

area of unshaded portion= 4×3.14×1.25×1.25

=19.625

area of leftover=25-19.625

= 5.375


What is the value of the expression (2^4)^2?

Answers

Answer:

256

Explanation:

[tex]\dashrightarrow \sf \left(2^4\right)^2[/tex]

apply exponent rule: [tex]\bold{\left(a^b\right)^c=a^{bc}}[/tex]

[tex]\dashrightarrow \sf 2^{4*2}[/tex]

[tex]\dashrightarrow \sf 2^{8}[/tex]

[tex]\dashrightarrow \sf 256[/tex]

[tex]\large{\boxed{(\sf 2^{4})^2 \ \ = \ \ 256}[/tex]

A washer and dryer cost a total of $964 . The cost of the washer is three times the cost of the dryer. Find the cost of each item.

Answers

Answer:

A washer and dryer cost a total of $964 . The cost of the washer is three times the cost of the dryer. Find the cost of each item.

Answer: 96$

Answer:

The washer costs $723 and the dryer $241.

Step-by-step explanation:

Represent the cost of the washer by w and that of the dryer as d.

Then w = 3d.

Since w + d + $964, we get 3d + d = $964, or 4d = $964, or d = $241.

Three times that is $723.

The washer costs $723 and the dryer $241.

what is this
please help​

Answers

Answer:

The answers are the 2nd box, 4th box, and 5th box.

please someone help with this thank you !!

Answers

Answer:

i guess 36 ft in cubic feet

Step-by-step explanation:

8 x 4 1/2

= 8 x 9/2

= 4 x 9

= 36

The circumference of a circle is 94.2 kilometers. What is the circle's diameter?

Answers

Answer:

The diameter would be 29.98 kilometers.

Step-by-step explanation:

We know that our circumference is pi * diameter, so we just have to divide 94.2 by pi to solve.

Answer:

30 km

Step-by-step explanation:

We can use the below formula to find the diameter of a circle.

C = π × d

Here,

C ⇒ circumference ⇒ 94.2 km

d ⇒ diameter

To find the diameter make d as the subject in the above formula.

d = C / π

d = 94.2 / 3.14

d = 30 km

What is the distance between points (8,3) and (53,31) on a coordinate plane?

Answers

Answer:

53 units

Step-by-step explanation:

Let [tex](x_1,y_1)\rightarrow(8,3)[/tex] and [tex](x_2,y_2)\rightarrow(53,31)[/tex] to use the distance formula:

[tex]d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\\\\d=\sqrt{(31-3)^2+(53-8)^2}\\\\d=\sqrt{(28)^2+(45)^2}\\\\d=\sqrt{784+2025}\\\\d=\sqrt{2809}\\\\d=53[/tex]

Thus, the distance between the two points is 53 units

Three moons are in the same circular orbit around a planet. The moons are each 98,000 kilometers from the surface of the planet, located at points A, B, and C. The planet is 12,000 kilometers in diameter and m∠ABC=90°. How far is point A from point C?

Answers

Answer:

The distance between points A and C is 275000 kilometers

Victoria is at an elevation of 150 feet. She hikes down to an elevation of 120 feet in 40 minutes. Then she hikes down to an elevation of 100 feet in 30 minutes.

Answers

Answer:

Answer: First portion is greater than second portion.

Step-by-step explanation:

Time taken to hiked down a trail = 10 minutes

Change in elevation = (-) 170 feet

Speed is given by

\begin{gathered}Speed=\frac{Distance}{Time}\\\\Speed=\frac{170}{10}\\\\Speed=17\text{ feet per minute}\end{gathered}

Speed=

Time

Distance

Speed=

10

170

Speed=17 feet per minute

Similarly,

Time taken to hiked down a trail = 20 minutes

Change in elevation = (-)220 feet

Speed is given by

Speed=\frac{Distance}{Time}Speed=

Time

Distance

\begin{gathered}Speed=\frac{220}{20}\\\\Speed=11\text{ feet per minutes}\end{gathered}

Speed=

20

220

Speed=11 feet per minutes

So, we can see that first portion of the hike where he hiked down a trail at a steady rate for 10 minutes and her change in elevation was (-) 170 feet, was her rate of change in elevation greater.

As 17 feet per minutes is greater than 11 feet per minutes.

Someone Plss Help!!!! The dot plots compare the number of raffle tickets sold by students for a school fundraiser.​

Answers

Answer:

That's just the way of the world

Somewhere in the world, they think they're working for themselves

They get up everyday to go to work for someone else

And somebody works for them and, so, they think they got it made

But they're all just working to get paid the very same

And so, they keep on twiddlin' them thumbs.

PLEASE SOLVE. I NEED IT TO BE CORRECT!

Answers

Answer:-4,000/ -20

Step-by-step explanation:

hopefully this is right, so you have multiple choice and if so is this up their?

Answer:

198

Step-by-step explanation:

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