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Anni [7]
3 years ago
15

A person invested $2,500 in an account growing at a rate allowing the money to

Mathematics
1 answer:
sveta [45]3 years ago
3 0

Answer:

Step-by-step explanation:

A person invested $2,500 in an account growing at a rate allowing the money to double every 11 years. How long, to the nearest tenth of a year would it take for the

value of the account to reach $3,800?

The formula for exponential growth given as:

A(t) = Ao (1/2)^t/t½

A(t) = Amount after time t = $3,800

Ao = Initial amount invested = $2500

t = Time in years

t½ = Time it takes to double = 11 years

Hence,

3800 = 2500(1/2)^t/11

Divide both sides by 2500

3800/2500 = 2500(1/2)^t/11/2500

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Avery invested $200 in an account paying an interest rate of 6 7/8%
Maslowich

Answer:

0.73 yrs

Step-by-step explanation:

if t is time in years

quarterly

600 = 200(1 + 0.06625/4)^4t

3 = (1 + 0.06625/4)^4t

ln3 = 4tln(1. + 06625/4)

t = ln3 / (4ln1.0165625)

t = 16.7198 yrs

continuously

600 = 200e^(0.06875t)

3 = e^(0.06875t)

ln3 = 0.06875t

t = ln3 / 0.06875

t = 15.9798 years

Δt = 16.7198 - 15.9798 = 0.73 yrs

5 0
3 years ago
Read 2 more answers
THIS IS URGENT OR MY MOM WILL KILL ME: How many 2-digit decimals are there?
viva [34]

Answer:

They have two digits after the decimal point − or we say they have two decimal digits. We can also illustrate hundredths by dividing a square into a hundred parts.

Step-by-step explanation:

4 0
3 years ago
The quadratic function d = –2x^2 + 15 models a skateboarder’s distance, in feet, from the bottom of a hill x seconds after the s
Ksenya-84 [330]

Answer:

After 1.87 seconds the skateboarder is 8 ft from the bottom of the hill.

Step-by-step explanation:

The quadratic function d = –2*x² + 15 models a skateboarder’s distance, in feet, from the bottom of a hill x seconds after the skateboarder starts moving down the hill.

You want to know after how many seconds the skater is 8 feet from the bottom of the hill. That is, with the distance being 8 feet, you want to calculate the time t. Replacing in the expression d by the value of 8 feet:

8=–2*x² + 15

Solving:

8-15 = -2*x²

-7= -2*x²

(-7)÷(-2)= x²

3.5= x²

√3.5=x

1.87= x

<u><em>After 1.87 seconds the skateboarder is 8 ft from the bottom of the hill.</em></u>

5 0
3 years ago
HALP MEEEE
swat32

Answer:

Alice: 2184

Maggie:1794

Luna:798 this one is weird cause it has a decimal but u cant have a fraction of a bead so i left it out

Zeinab:1333 same with this one

Step-by-step explanation:

7 0
3 years ago
What is the mood of the expert of the monkey paw? A.) fearful B.) Irritated C.) playful D.) Energetic
nataly862011 [7]

Answer:

I believe its A. Fearful.

Step-by-step explanation:

Because his story is dark and malicious because of the mood its is dark and foreboding

8 0
3 years ago
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