It is predicted that the population of a particular state will double every 25 years

QUESTION POSTED AT 19/02/2020 - 03:26 PM

Related questions

A random sample of 125 students is chosen from a population of 4,000 students. If the mean IQ in the sample is 100 with a standard deviation of 8, what is the 98% confidence interval for the students' mean IQ score?

Answer: 98.33 - 101.67


Step-by-step explanation:

The given Sample mean n= 100  

Standard deviation\sigma=8

Mean IQ in the sample \bar{x}=125

Standard error of mean = \frac{\sigma}{\sqrt{\bar{x}}}

Standard error of mean = \frac{8}{\sqrt{125}}

Thus, standard error =\frac{8}{11.180}

Standard error of mean (SE)= 0.7155  

We know that  z - score for 98% confidence interval is 2.33 .

Now, 98% confidence interval will be

n-z(SE) and n+z(SE)

=100-(0.7155)(2.33)\ and\ 100+(0.7155)(2.33)  

=100-1.66726\ and\ 100+1.66726

=98.33274\ and\ 101.667

Hence, the 98% confidence interval for the students' mean IQ score will be 98.33 - 101.67



ANSWERED AT 31/03/2020 - 10:47 AM


QUESTION POSTED AT 31/03/2020 - 10:47 AM

Help please will mark brainliest answer!!! ASAP!!! What is the final balance for an account starting with $3000 at 2.5% interest compounded annually for 4 years? A = P(1 + r)t

P = principal (initial amount), r = rate of interest, and t = time

So, A = 3000(1+0.025)^4

Answer: $3,311.44 (approximately)

ANSWERED AT 30/03/2020 - 01:35 AM


QUESTION POSTED AT 30/03/2020 - 01:35 AM

Help please will mark brainliest answer!!! ASAP!!! What is the final balance for an account starting with $3000 at 2.5% interest compounded annually for 4 years? A = P(1 + r)t

A = P(1+r)^t  where P is the principal (starting) amount, r is the rate of interest, and t is time. Knowing this, plug in your values:

A = 3,000(1+0.025)^4 < this is what your equation should look like. Once you enter this into a calculator, you should get an answer of $3,311.438672. Round, and you'll be finished.

Answer: The final balance on the account will be $3,311.44

ANSWERED AT 30/03/2020 - 01:33 AM


QUESTION POSTED AT 30/03/2020 - 01:33 AM

A population of 1,000 squirrels lives on a rectangle-shaped farm plot that is 25 feet long by 10 feet wide what is the population density

First, find the area of the plot:
25*10=250

1000/250 is 4

the population density is 4 squirrels per square foot.

ANSWERED AT 30/03/2020 - 01:30 AM


QUESTION POSTED AT 30/03/2020 - 01:30 AM

Jonathan and Sarah purchased a beach house for $10,000,000. The home appreciates at a rate of 3% per year. The appreciation of the house is shown in the graph. The home is currently worth about $13,000,000. Jonathan and Sarah have owned the home for about ______ years. how many years

Current worth = 10,000,000 * (1.03)^years
We must determine the years when current worth = 13,000,000
13,000,000 / 10,000,000 = 1.03^years
1.3 = 1.03^years
Taking logs of both sides:
log (1.3) = years*log(1.03)
log(1.3) / log(1.03) = years
0.11394335231 / 0.012837224705 = years
years = 8.8760113598
Roughly about 8.9 years


ANSWERED AT 29/03/2020 - 06:29 PM


QUESTION POSTED AT 29/03/2020 - 06:29 PM

Kathleen deposits $20 into her account that earns 2.5% interest that is compounded twice a year . how much will she have in her account in 30 years ?

A=p (1+I/k)^kn
A=20×(1+0.025÷2)^(2×30)
A=42.14

ANSWERED AT 28/03/2020 - 12:43 PM


QUESTION POSTED AT 28/03/2020 - 12:43 PM

I'm doing something in math, and I need to find out how many people live in one of these states, or both of them. 1 in past the other now, etc. The two states that I chose are Florida and Georgia. I have to do this on a popular site.

Http://worldpopulationreview.com/states/florida-population/
http://worldpopulationreview.com/states/georgia-population/

ANSWERED AT 28/03/2020 - 12:42 PM


QUESTION POSTED AT 28/03/2020 - 12:42 PM

Tristen is a salesman whose base pay plus commissions amounted to $59,238 last year. if his base pay was? $31,050 and he made $97,200 in sales last year, what was his rate of commission? a) 61% b) 52% c) 29% d) 32%

Answer:

The commission rate is 0.29 or 29%

Step-by-step explanation:

Hello, great question. These types are questions are the beginning steps for learning more advanced Algebraic Equations.

Before we can solve this problem, we need to create a formula that calculates the total amount of Tristen's payment. The formula would be the following,

T = b + (r*s)

Where:

  • T is the total pay
  • b is the base pay
  • r is the rate of commission
  • s is the total sales

Now that we have the formula we can plug in the values from the question and then solve for the rate of commission (r)

59,238 = 31,050 + (r*97,200) .... subtract 31,050 on both sides

 28,188= r*97,200 .... divide both sides by 97,200

0.29 = r

Now we can see that the commission rate is 0.29 or 29%

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

ANSWERED AT 28/03/2020 - 12:39 PM


QUESTION POSTED AT 28/03/2020 - 12:39 PM

In one year Jane laid 12 dozen eggs. How many eggs is that?

The answer is 144, you multiply 12 times 12.

ANSWERED AT 28/03/2020 - 12:34 PM


QUESTION POSTED AT 28/03/2020 - 12:34 PM

And art teacher uses 1/4 of blue paint each month in one year how many gallons of paint will she use

I got three gallons!

ANSWERED AT 28/03/2020 - 12:31 PM


QUESTION POSTED AT 28/03/2020 - 12:31 PM

Is rolling doubles a simple event or compound event

Simple events can be defined as the single outcome of the performed experiment or it is an event which cannot be broken down any more. Compound events is the combination of two or more than two simple event. It can also be defined as an event that contains more than one sample points in it. I hope this helps you alittle bit<3

ANSWERED AT 28/03/2020 - 12:29 PM


QUESTION POSTED AT 28/03/2020 - 12:29 PM

Express six cups 25 quarts as a fraction in simplest form A. 6/5 B. 3/5 C. 3/10 D. 6/20

D because  6/20  is correct  and the three wrong super wrong hope it helps

ANSWERED AT 28/03/2020 - 12:28 PM


QUESTION POSTED AT 28/03/2020 - 12:28 PM

These data show the age in years of 9 members of the youth orchestra. 12 14 16 17.5 10 18 15 15.5 19 What is the IQR (interquartile range) for these data?

First quartile is 13
Third quartile is 17.75
Take 17.75 - 13 = 4.75
The IQR is 4.75

ANSWERED AT 28/03/2020 - 12:24 PM


QUESTION POSTED AT 28/03/2020 - 12:24 PM

James made 15 out of 25 free throws. Later, he made 21 out of 25 free throws. What is the percent increase?

21-15=6
6/15=0.4
0.4=40%
So the percent increase is 40%
Hope this helps!!  ^.^

ANSWERED AT 28/03/2020 - 12:24 PM


QUESTION POSTED AT 28/03/2020 - 12:24 PM

If $396 is invested at an interest rate of 13% per year and is compounded continuously, how much will the investment be worth in 3 years

Answer:

\$584.88  

Step-by-step explanation:

we know that

The formula to calculate continuously compounded interest  is equal to

A=P(e)^{rt}  

where  

A is the Final Investment Value  

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal


t is Number of Time Periods  

e is the mathematical constant number

we have  

t=3\ years\\ P=\$396\\ r=0.13  

substitute in the formula above  

A=\$396(e)^{0.13*3}=\$584.88  


ANSWERED AT 28/03/2020 - 12:18 PM


QUESTION POSTED AT 28/03/2020 - 12:18 PM

A population of 80,000 toads is expected to shrink at a rate of 9.2% per year. What will be the toad population be in 20 years?

P=80,000×(1−0.092)^(20)
p=11,609.3

ANSWERED AT 28/03/2020 - 12:17 PM


QUESTION POSTED AT 28/03/2020 - 12:17 PM

60% oj juniors in this years classs are male while 40% are female

What is your question? I am confused. It is more of a statement than a question.

ANSWERED AT 28/03/2020 - 12:17 PM


QUESTION POSTED AT 28/03/2020 - 12:17 PM

How do you solve 25-24/4-1 pemdas? I couldn't find anything online about how to do pemdas when you're in this scenario.

The answer is:  18 .
_________________________


25 - 24/4 -1 = 25 - (24/4) - 1 = 25 - 6 - 1 = 19 - 1 = 18 .


The answer is:  18 .
_________________________

ANSWERED AT 28/03/2020 - 12:03 PM


QUESTION POSTED AT 28/03/2020 - 12:03 PM

The Roth family has liquid assets of $10,000, use assets of $150,000 and investment assets of $34,000. They also have liabilities totaling $108,000. If their total liabilities increase by $7,000 over the next year, by how much would the Roth family need to increase their assets in order to have a net worth of $100,000? a. $7,000 b. $14,000 c. $21,000 d. $28,000

Answer:

c.$21,000

Step-by-step explanation:

In order to solve this you just have to add up assets and liabilities, assets are the money or worth they own, and liabilities are the things htey owe, so assets are:

Liquid: $10,000

Investments: $34,000

Use Assets: $150,000

Total assets: $194,000

Liabilities:108,000+7,000: 115,000

Net worth: $194,000-$115,000= $79,000

So in order to have a net worth of $100,000 they will need to increase their assests in $21,000.

ANSWERED AT 28/03/2020 - 11:57 AM


QUESTION POSTED AT 28/03/2020 - 11:57 AM

Solve the equation x2 = 5. (the two is an exponent) A. x = 5 B. x = 25 C. x = 5√ D. x = ±5√

The opposite of squaring a number is taking the square root.....
so x = square root of 5

ANSWERED AT 28/03/2020 - 11:43 AM


QUESTION POSTED AT 28/03/2020 - 11:43 AM

The population of a town was 47,000 in 1950 and 83,000 in 2010. Assume the rate of population increase is constant. What will the population be in 2015? A) 86,000 B) 89,000 C) 85,400 D) 83,600

If it's gradual, it goes up 3,000 every 5 years. So, the answer is A) 86,000

ANSWERED AT 28/03/2020 - 11:35 AM


QUESTION POSTED AT 28/03/2020 - 11:35 AM

A culture started with 6000 bacteria. after 4 hours, it grew to 7800 bacteria. predict how many bacteria will be present after 18 hours. use the exponential growth formula and round to the nearest whole number.

From the 6000 bacteria, it grew to 7800 bacteria after 4 hours. The increased in 4 hrs was 1800 bacteria, so we can say that there are 450 bacteria growing per hour. After 18 hrs, we can predict that there will be 14,000 bacteria will be present in the culture.

ANSWERED AT 28/03/2020 - 11:33 AM


QUESTION POSTED AT 28/03/2020 - 11:33 AM

Sergio has decided to diversify his investments in the following way: $4,000 in an account earning 3.2% simple interest $4,000 in a savings account earning 2.1% interest compounded annually $7,500 in a certificate of deposit earning 5% interest compounded quarterly How much total interest will Sergio earn on his investments at the end of 4 years?

Future value of all investments
4,000×(1+0.032×4)+4,000
×(1+0.021)^(4)+7,500×(1
+0.05÷4)^(4×4)
=18,007.90

Total interest earned
18,007.90−(4,000
+4,000+7,500)
=2,507.90 ....answer

ANSWERED AT 28/03/2020 - 11:32 AM


QUESTION POSTED AT 28/03/2020 - 11:32 AM