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2 years ago

You have $500 in a savings account. How long will it take to double that

Mathematics

1 answer:

kondor19780726 [428]2 years ago

4 0

Answer:

Step-by-step explanation:

The formula for compound annual interest is A = P(1 + r)t where

A = Accumulated or final amount (double $500 = $1000)

P = Principal or original amount ($500)

r = Rate as a decimal (0.08)

t = Time in years

1000 = 500(1 + 0.08)t

2 = 1.08t

Take the logarithm of both sides. I prefer the natural logarithm ln, but if you're more comfortable with base 10 logs they will work just as well

ln(2) = ln(1.08t)

ln(2) = t*ln(1.08)

t = ln(2)/ln(1.08)

t = 9.0065 years

Check: 500*1.089.0065 = $1000

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the performing arts department put in its spring show on Friday and Saturday nights. the price of a ticket was the same both nig

Galina-37 [17]

Let $p=$ the price of a ticket
Let $c=$ the cost to put on the show

Formula:
(profit) = (ticket price) * (number of people) - (cost to put on show)
We have two equations here:
$500=120p-c$
$400=100p-c$
Solve:
$100=20p$
⇒ $p=5$
⇒ $400=100(5)-c$
⇒ $400=500-c$
⇒ $c=100$

So the price of a ticket is $5, and the cost to put on the show is $100.

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2 years ago

Assume you have sea water that weighs 64 lb/ft³ and contains 35 parts per thousand (0.0035) dissolved salt by weight. How many c

zlopas [31]

Answer:

558.036 lb

Step-by-step explanation:

Let x is the amount of the sea water to collect 125 lb of sea salt

As given: 64 lb/ft³ has 0.0035 dissolved salt by weight

So the formula to find out the amount of the sea water is:

64 lb/ft³ * 0.0035 *x ft³ = 125 lb

<=> x = $\frac{125}{64*0.035}$ = 558.036 lb

Hope it will find you well.

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3 years ago

in 2001 the average yearly wage was 21842 on average people spent £1644 on their family holiday what percentage of the average y

Vinil7 [7]

The percentage of the average yearly wage is 7.53%.

<h3>What are percentages?</h3>

Percentage can be described as a fraction of an amount that is usually expressed as a number out of hundred.

<h3>What is the percentage of the average yearly wage?</h3>

Percent = (amount spent on family holiday / total yearly wage) x 100

(1644 / 21842) x 100 = 7.53%

To learn more about percentages, please check: brainly.com/question/25764815

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2 years ago

A doctor's office records data and concludes that, on average 11 out of 100 ( 11%) patients call to reschedule their appointment

Delicious77 [7]

Answer:

Step-by-step explanation:

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2 years ago

16 cups = how many fl oz

Damm [24]

16 cups = 128 fl oz .

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3 years ago

Read 2 more answers