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3 years ago

Your credit limit is $300

Mathematics

2 answers:

Readme [11.4K]3 years ago

5 0

Answer:

$300 dollars.

mihalych1998 [28]3 years ago

5 0

Answer:

you should owe 300

Step-by-step explanation:

when it comes to banking and credit cards you always pay what the bank gives you in this case it is 300$ so you have to give them 300$ back! boom

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2. The cost that a carpet cleaning company charges is directly proportional to the number of rooms cleaned. The cost is $22 for

klio [65]

Answer:

Step-by-step explanation:

to determine cost u need to have a equation to show cost per room.and total cost of rooms

6 0

3 years ago

Brody deposited $500 into an account that earns 4.2% interest compounded annually. He makes no additional deposits and no withdr

zaharov [31]

The answer is A $ 167

I=pr^t-p
I=500(104.2/100)^7-500
I=500(1.042^7-1)
I=$167.00 to nearest dollar

8 0

3 years ago

A random sample of 21 observations is used to estimate the population mean. The sample mean and the sample standard deviation ar

stepladder [879]

Answer:

a. CI=[128.79,146.41]

b. CI=[122.81,152.39]

c. As the confidence level increases, the interval becomes wider.

Step-by-step explanation:

a. -Given the sample mean is 137.6 and the standard deviation is 20.60.

-The confidence intervals can be constructed using the formula;

$\bar X\pm \ z\frac{s}{\sqrt{n}},$

where:

$s$ is the sample standard deviation
$z$ is the s value of the desired confidence interval

we then calculate our confidence interval as:

$\bar X\pm z\frac{s}{\sqrt{n}}\\\\=137.60\pm z_{0.05/2}\times\frac{20.60}{\sqrt{21}}\\\\=137.60\pm1.960\times \frac{20.60}{\sqrt{21}}\\\\=137.60\pm8.8108\\\\\\=[128.789,146.411]$

Hence, the 95% confidence interval is between 128.79 and 146.41

b. -Given the sample mean is 137.6 and the standard deviation is 20.60.

-The confidence intervals can be constructed using the formula in a above;

$\bar X\pm z\frac{s}{\sqrt{n}}\\\\=137.60\pm z_{0.01/2}\times\frac{20.60}{\sqrt{21}}\\\\=137.60\pm3.291\times \frac{20.60}{\sqrt{21}}\\\\=137.60\pm 14.7940\\\\\\=[122.806,152.394]$

Hence, the variable's 99% confidence interval is between 122.81 and 152.39

c. -Increasing the confidence has an increasing effect on the margin of error.

-Since, the sample size is particularly small, a wider confidence interval is necessary to increase the margin of error.

-The 99% Confidence interval is the most appropriate to use in such a case.

7 0

4 years ago

The population of a country increased by an average of 2% per year from 2000 to 2003. If the population of this country was 2 00

motikmotik

The answer is A. 1,846,000.
Hope this helps! :)

3 0

4 years ago

Read 2 more answers

A phone plan costs $10 per Month, +.03 per text message. John wants his phone bill to be less than $40, before taxes. What is th

masha68 [24]

Answer:

The maximum number of text message John can send is 100

Step-by-step explanation:

Given as :

The phone bill of the John = $ 10 per month + $ 0.3 per text message

John want his bill amount to be less than $ 40

Let The maximum number of text message John can send = n

According to question

The total bill amount = The cost of phone plan + rate of text message

I.e $ 10 per month + $ 0.3 × maximum number of text message = $ 40

or, $ 0.3 × n = $ 40 - $ 10

Or, $ 0.3 × n = $ 30

∴ n = $\frac{30}{0.3}$

I.e n = 100

So, The maximum number of text message John can send = n = 100

Hence The maximum number of text message John can send is 100 Answer

5 0

3 years ago