Noah invested $890 in an account paying an interest rate of 4 5/8% compounded
annually. Riley invested $890 in an account paying an interest rate of 5 1/4%
compounded continuously. To the nearest hundredth of a year, how much longer
would it take for Noah's money to triple than for Riley's money to triple?

Answers

Answer 1

Answer:

3.37 years

Step-by-step explanation:

\text{Rate 1: }4\tfrac{5}{8}\%=4+5/8=

Rate 1: 4

8

5

%=4+5/8=

\,\,4.625\%\rightarrow 0.04625

4.625%→0.04625

\text{Rate 2: }5\tfrac{1}{4}\%=5+1/4=

Rate 2: 5

4

1

%=5+1/4=

\,\,5.25\%\rightarrow 0.0525

5.25%→0.0525

890\text{ tripled is }2670

890 tripled is 2670

\text{Calculate Tripling Time for Noah}

Calculate Tripling Time for Noah

\overline{\phantom{\text{Calculate Tripling Time for Noah}}}

Calculate Tripling Time for Noah

\text{Compounded Annually:}

Compounded Annually:

A=P(1+r)^t

A=P(1+r)

t

A=2670\hspace{35px}P=890\hspace{35px}r=0.04625

A=2670P=890r=0.04625

Given values

2670=

2670=

\,\,890(1+0.04625)^{t}

890(1+0.04625)

t

Plug in values

2670=

2670=

\,\,890(1.04625)^{t}

890(1.04625)

t

Add

\frac{2670}{890}=

890

2670

=

\,\,\frac{890(1.04625)^{t}}{890}

890

890(1.04625)

t

Divide by 890

3=

3=

\,\,1.04625^t

1.04625

t

\log\left(3\right)=

log(3)=

\,\,\log\left(1.04625^t\right)

log(1.04625

t

)

Take the log of both sides

\log\left(3\right)=

log(3)=

\,\,t\log\left(1.04625\right)

tlog(1.04625)

Bring exponent to the front

\frac{\log\left(3\right)}{\log\left(1.04625\right)}=

log(1.04625)

log(3)

=

\,\,\frac{t\log\left(1.04625\right)}{\log\left(1.04625\right)}

log(1.04625)

tlog(1.04625)

Divide both sides by log(1.04625)

24.2989=

24.2989=

Calculate Tripling Time for Riley

Compounded Continuously:

A=Pe^{rt}

A=Pe

rt

A=2670\hspace{35px}P=890\hspace{35px}r=0.0525

A=2670P=890r=0.0525

Given values

2670=

2670=

\,\,890e^{0.0525t}

890e

0.0525t

Plug in

\frac{2670}{890}=

890

2670

=

\,\,\frac{890e^{0.0525t}}{890}

890

890e

0.0525t

Divide by 890

3=

3=

\,\,e^{0.0525t}

e

0.0525t

\ln\left(3\right)=

ln(3)=

\,\,\ln\left(e^{0.0525t}\right)

ln(e

0.0525t

)

Take the natural log of both sides

\ln\left(3\right)=

ln(3)=

\,\,0.0525t

0.0525t

ln cancels the e

\frac{\ln\left(3\right)}{0.0525}=

0.0525

ln(3)

=

\,\,\frac{0.0525t}{0.0525}

0.0525

0.0525t

Divide by 0.0525

20.9259=

20.9259=

How much longer for Noah to triple:

24.2989-20.9259

24.2989−20.9259

3.373

3.373


Related Questions

HELP ME ASAP
I NEED YOUR HELP PLS
I NEED AN ANSWER NOW

Answers

Answer:

N=21 Degrees M=122 Degrees L= 37 Degrees X=21 Degrees

Step-by-step explanation:

Add all them up then make them equal 180 degrees

9x-9 = 180

Solve

9x=180 +9

9x= 189

9x/9= 189/9

x=21

Then plug in x to find each Angle.

N (x) Degrees

N=21 Degrees

M = 6x - 4

M = 6(21) - 4

M = 126 - 4

M = 122 Degrees

L = 2x - 5

L = 2(21) -5

L = 42 - 5

L = 37 Degrees

PLS HWLP ME, I REALLY NEED IT

Answers

Answer:

E. 3×3×3×3

part b:

3×3×3×3

9×9

81

which of these is equivalent to (2^-4) * 2^-5 / 2^6

Answers

Answer:

1/2^7

Step-by-step explanation:

Answer:

1/2^7

Step-by-step explanation:

Drag tiles to match each fraction, decimal, or percent to an equivalent fraction, decimal, or percent.

Answers

Answer:

...

Step-by-step explanation:

1. 0.002

2. 308%

3. 2 6/10

Tiffany earns an annual income of $55,000. After she pays taxes, her take home pay is $41,800. What
percentage of her annual income does Tiffany pay in taxes?

Answers

Answer:

24%

Step-by-step explanation:

Taxes

t = 55000 - 41800

t = 13200

% tax

p = 13200/55000 * 100

p = 24%

Which expressions are equivalent to the one below? Check all that apply.
log(107)
A. 7.log 10
B. 1
O C. 7
D. 7. 10

Answers

The answer is actually C

Find the surface area of the triangular prism.

Answers

Answer: 125.6

Step-by-step explanation:

Answer: The answer is 125.6




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

what percentage of simple interest returest reture must a firm get on their deposit if it wants its birr 25000 to grow to birr 26500 in 6 months?​

Answers

Answer:

0.9759%

Step-by-step explanation:

26500 = 25000x^6

solve for x

x = 1.009759

This means it increases by 0.009759 which is 0.9759%

A:45
B:60
C:90
D:180

Answers

Answer:

90

Step-by-step explanation:

When you have Triangles, you have to divide your answer by two. So first, Multiply 3 x 5, which is 15. But you need to divide by two, so 15 ÷ 2 is 7.5. Then, Multiply 7.5 x 12, and now you have 90. Hope this helps!

Write an equation that represents a perpendicular line to y=-3x+5

Answers

Answer:

Example

Step-by-step explanation:

The slope-intercept form is y=mx+b y = m x + b , where m m is the slope and b b is the y-intercept. Using the slope-intercept form, the slope is 3 3 . The equation of a perpendicular line to y=3x−5 y = 3 x - 5 must have a slope that is the negative reciprocal of the original slope.

Apen is being built that is 10 feet long and 20 feet wide. How much fencing material will be needed

Answers

Answer:

40 square feet of material

Step-by-step explanation:

Find the present value of an ordinary annuity with deposits of $14,235 quarterly for 10 years at 10.0% compounded quarterly.
What is the present value?

Answers

You would use this equation y=14,235(1+0.10)^10
Solving it like this
Y=14,235(1.1)^10
Your final answer is 36921.92392 then round and get 36921.92

Please help me with this

Answers

Answer:

–x² + 12x + 5

Step-by-step explanation:

x² + 3x

–2x² + 9x + 5

The sum of the above expression can be obtained as follow:

.... x² + 3x

+ –2x² + 9x + 5

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

–x² + 12x + 5

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

Thus, the sum of x² + 3x and –2x² + 9x + 5 is –x² + 12x + 5

Question
A bottle of medicine contained 300 mL. Convert this to liters.
Provide your answer below:
L

Answers

Answer:

0.3L

Step-by-step explanation:

1000mL = 1L

300mL = 0.3L

quadrilateral RUST has a vertex at R (1,5)

what are the coordinates of R after translation (x,y) ---> (x+1,y-2), followed by a dilation by a scale factor of 3, centered at the origin?

A.(6,2)

B(5,8)


C(6,6)


D.(6,9)

Answers

Answer:

D

Step-by-step explanation

translation

x1 = x+1 = 2

y1 = y-2 = 3

(2;3)

dilation

x1 = 3x = 6

y2 = 3y = 9

(6,9)

Assume that the probability of a defective computer component is 0.02. Components arerandomly selected. Find the probability that the first defect is caused by the seventh componenttested. Find the expected number and variance of the number of components tested before adefective component is found.

Answers

Answer:

0.0177 = 1.77% probability that the first defect is caused by the seventh component tested.

The expected number of components tested before a defective component is found is 50, with a variance of 0.0208.

Step-by-step explanation:

Assume that the probability of a defective computer component is 0.02. Components are randomly selected. Find the probability that the first defect is caused by the seventh component tested.

First six not defective, each with 0.98 probability.

7th defective, with 0.02 probability. So

[tex]p = (0.98)^6*0.02 = 0.0177[/tex]

0.0177 = 1.77% probability that the first defect is caused by the seventh component tested.

Find the expected number and variance of the number of components tested before a defective component is found.

Inverse binomial distribution, with [tex]p = 0.02[/tex]

Expected number before 1 defective(n = 1). So

[tex]E = \frac{n}{p} = \frac{1}{0.02} = 50[/tex]

Variance is:

[tex]V = \frac{np}{(1-p)^2} = \frac{0.02}{(1-0.02)^2} = 0.0208[/tex]

The expected number of components tested before a defective component is found is 50, with a variance of 0.0208.

The equation 12.5(x + 20) = 460 describes Steve's exercise plan for the
next 12 weeks. He wants to bike 20 miles per week and run x miles per
week for a total of 460 miles. How many miles, x, should Steve run each
week to achieve his goal?
A. 56.8 miles B. 38.4 miles. C. 35.2 miles. D. 16.8 miles

Answers

B 38.4 miles because it’s obvious I took the test trust me

5. How are CIRCLE and CONE different?
Differences:
similraties:​

Answers

Answer:

a circle is 2d and a cone is 3d and a cone has a circle on the bottom

Step-by-step explanation:

A cone is a three-dimensional solid that has a circular base joined to a single point (called the vertex) by a curved side. You could also think of a cone as a “circular pyramid”. A right cone is a cone with its vertex directly above the center of its base.

10 ft area of base 62ft 2 (squared)

Answers

Answer:

12

Step-by-step explanation:

The dot plots below show the weights of the players of two teams:

Based on visual inspection of the dot plots, which team appears to have the larger mean weight?

A. Team A
B. Team B
C. Both groups are similar.
D. Not enough information is available to draw a conclusion.

Answers

A.) Team. A. ;)........
Umm . Think team A
Good luck

3. (G.11C) A right cylinder has a total surface area of 1301 cm?. If the diameter of
the cylinder is 10 cm, what is the height?
X
A 8 cm
B 10 cm
C 9 cm
D 12 cm

Answers

Answer:

A. 8 cm

Step-by-step explanation:

Total surface of a cylinder = 130π cm²

Diameter (d) = 10 cm

Radius (r) = 10/2 = 5 cm

Height = ?

Formula for total surface area of cylinder = 2πrh + 2πr²

Plug in the values

130π = 2*π*5*h + 2*π*5²

130π = 10hπ + 50π

130π = π(10h + 50)

Divide both sides by π

130 = 10h + 50

Subtract 50 from each side

130 - 50 = 10h

80 = 10h

Divide both sides by 10

80/10 = 10h/10

8 = h

h = 8 cm

A set of equations is given below: Equation A: y = x + 1 Equation B: y = 4x + 5 Which of the following steps can be used to find the solution to the set of equations? Ax+1 = 4x + 5 B x = 4x + 5 Cx+1 = 4x Dx+5= 4x + 1​

Answers

Answer: x+1 = 4x+5  (choice A)

=======================================================

Work Shown:

y = 4x+5 .... start with equation B

x+1 = 4x+5 .... replace y with x+1, due to equation A

The second step used the substitution property.

------

Alternative Viewpoint:

The variable y is equal to both 4x+5 and x+1 at the same time; therefore, the two right hand sides must be the same.

It's like saying if y = x and y = 5, then x = 5.

which expression is equivalent to
[tex]4 - ( - 7)[/tex]
A.7+4

B.4-7

C.-7-4

D.-4+7​

Answers

the answer would be A. because two negatives equal a positive

Simplify the expression: 3(2x2 + 7x + 4) - 8x2 + 15

Answers

Answer:

-2x² + 21x + 27

Step-by-step explanation:

distribute 3 to get:

(6x² + 21x + 12) - 8x² + 15

combine 'like terms' to get:

-2x² + 21x + 27

Find Sin S, sin R, cos S, and cos R

Answers

Answer:

18/26

16/26

16/26

18/26

Step-by-step explanation:

The ratio of blue cars to red cars in a garage is 9:7. If there are 49 red cars in the garage then how many blue cars must be in the
garage?

Answers

Answer:

Blue cars, B = 63 cars

Step-by-step explanation:

Let the blue cars be B.

Let the red cars be R.

Given the following data;

Ratio of B:R = 9:7 = 9 + 7 = 16

Red cars, R = 49

To find the number of blue cars;

First of all, we would determine the total number of cars using the expression;

R = 7/16 * x = 49

7x = 49 * 16

7x = 784

x = 112 cars

Now, we can find the number of blue cars;

B = 9/16 * 112

B = 1008/16

Blue cars, B = 63 cars

x2+5x-36
What is the simplest form of
?
x² - 16
X+9
X+4.
OT
X+9
X-4
9
4

Answers

Answer:

45

Step-by-step explanation:

58928

489472

74737383737372

On a piece of graph paper, graph the line that passes through point (-2,3) with a slope of 2/3. Give me the coordinates of a first quadrant point that lies on this line, and has integer coordinates.

Answers

Answer:

Pic po nasan???????

Step-by-step explanation:

-_-

Math number 8.

Find the value of x

Answers

Answer:

8

Step-by-step explanation:

By intersecting chords theorem:

[tex]14(2x + 2) = 12(2x + 5) \\ \\ 28x + 28 = 24x + 60 \\ \\ 28x - 24x = 60 - 28 \\ \\ 4x = 32 \\ \\ x = \frac{32}{4} \\ \\ x = 8[/tex]

Construction workers are doing a
building project using floor plans
that have a scale of 1 cm to 2 m.
On the floor plans, a corridor is
shown with a length of 9 cm. How
many meters long will the actual
corridor?

Answers

Given:

1 cm in the plan is equal to 2 meters in real life

Length of corridor in plan = 9 cm

To find:

Actual length of corridor

Steps:

Since we know that 1 cm in plan = 2 meters

So,

9 cm = 2 * 9

length of corridor = 2 * 9

Length of corridor = 18 meters

Therefore, the length of the corridor is 18 meters

Happy to help :)

Please dont post question from primary/middle school in college

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