The product of two numbers is 45. Their sum is 14. What are the two numbers?

Veronica teaches French in groups of four students. She rents a room for $200 per month. She charges $45 per hour per student. V

alexandr402 [8]

of the task , we know that :

profit netto = $ 6100
influenza students = 7
hourly rate for one lesson of the French language = $45

we do not know about

profit brutto = ? denoted as x

the amount collected lessons
for one student = ? denoted as y

x = $6100 + $200
 $y = \frac{x}{45*7}$

 $\left \{ {{x=6300} \atop {y= \frac{6300}{315} =2}} \right.$

2 away

 $y = \frac{6100 + 200}{45 * 7} = 2$

4 0

3 years ago

Which table can be represented by a line

notka56 [123]

A number line. like where u plot the points (usually numbers) to compare them.

8 0

3 years ago

According to a study conducted in one city, 39% of adults in the city have credit card debts of more than $2000. A simple random

Butoxors [25]

Answer:

The sampling distribution of the sample proportion of adults who have credit card debts of more than $2000 is approximately normally distributed with mean $\mu = 0.39$ and standard deviation $s = 0.0488$

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean $\mu = p$ and standard deviation $s = \sqrt{\frac{p(1-p)}{n}}$

In this question:

$p = 0.39, n = 100$

Then

$s = \sqrt{\frac{0.39*0.61}{100}} = 0.0488$

By the Central Limit Theorem:

The sampling distribution of the sample proportion of adults who have credit card debts of more than $2000 is approximately normally distributed with mean $\mu = 0.39$ and standard deviation $s = 0.0488$

5 0

3 years ago

The additive inverse of -2.5

Pepsi [2]

The inverse of -2.5 is 2.5 ;]

7 0

3 years ago

Read 2 more answers

Please help! I’ll make brainliest!

jeka94

Answer:

2nd choice