3 years ago

What’s the formula for exponential growth and decay function?

1 answer:

n200080 [17]3 years ago

7 0

The original exponential formula is Y=ab^x, the b value has been replaced by either 1+r) or by (1-r). The growth rate is determined as b=1+r

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Convert the following repeating decimal to a fraction in simplest form .31 with the 1 repeating

bekas [8.4K]

Answer:

14/45

Step-by-step explanation:

So we have the fraction:

$0.3\bar1=0.31111...$

We can do this algebraically. Follow to following steps:

Let's let this number equal to n. Thus:

$0.31111...=n$

Since there is only 1 digit repeating, let's multiply everything by 10. So:

$3.1111...=10n$

Now, subtract n from both sides:

$3.1111-n=10n-n$

On the left, substitute the number for n. On the right, combine like terms:

$3.1111...-0.31111...=9n$

All of the 1s will cancel. So:

$3.1-0.3=9n$

Subtract:

$2.8=9n$

Divide both sides by 9:

$n=2.8/9$

Remove the decimal by multiplying both sides by 10:

$n=28/90$

Reduce:

$n=14/45$

And we're done!

Use a calculator to check:

$14/45\stackrel{\checkmark}{=}0.31111...$

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3 years ago

Tim tradesman had a taxable income of $82,500

maria [59]

What is the question?

6 0

2 years ago

The measure of an angle is 23 less than 5 times it’s supplement. Find the angle measurement. Show/explain work

sertanlavr [38]

Let the measure of an angle be "a"
let the supplement be "s"

a= s-23

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2 years ago

The pH of a substance added to a citrate buffer, y, depending on the ratio of citric acid to sodium citrate, x, can be modeled u

Charra [1.4K]

Answer:

Yes it's A. 0.79

Step-by-step explanation:

You plug in 6.5 into the y-value since it asks to find the ratio,x, if the pHis 6.5. Then you can solve using a calculator to get 0.79432, or 0.79

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3 years ago

Read 2 more answers

Jared and maila will usually both run 3 miles each time they go running .This month,jared ran an additional 21 miles. Which answ

jeyben [28]

Answer:

Total = m + j

= 3 + m + 21

Step-by-step explanation:

Mails = 3 miles

Jared = 3 miles + 21 miles

j = m + 21

m = 3

Total = m + j

= 3 + m + 21

Where,

m = 3

Total = 3 + m + 21

= 3 + 3 + 21

= 27

3 0

3 years ago