Suppose the expression a(b)n models the approximate number of customers who applied for a credit card every month since a bank opened,where a is the inital number of customers who applied,b is the rate of increase in the number of people who applied every month and n is the number if months since the bank opened. If the expression below models the number of applicants for a credit card,what is the correct interpretation of the second factor?

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Answer 1

Answer:

Answer:

i need it too

Step-by-step explanation:

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A survey was administered to parents of high school students in a certain state to see if the parents thought the students’ academic needs were being met. To select the sample, the parents were divided into two groups— one group of parents who live in cities with populations of more than 100,000 and the other group of parents who live in cities with populations less than or equal to 100,000. A random sample of 100 parents from each group was taken. Which of the following statements about the sample of 200 parents is true? (A) It is a convenience sample because the sample of parents was easily obtained. (B) It is a stratified random sample because parents were randomly selected from each group. (C) It is a random cluster sample because parents were randomly selected from each group. (D) It is a random cluster sample because groups of high schools were randomly selected. (E) It is a systematic sample because the parents were systematically divided into two groups.

Answers

Answer:

Option C is correct

It is a stratified random sample because parents were randomly selected from each group.

Step-by-step explanation:

I'll talk about the different types of sampling.

1) Random Sampling

In random sampling, each parent would have an equal chance of being surveyed. If this particular scenario wanted to use random sampling, they would have used computer generated random numbers for the parents and surveyed them, not just pick random parents equally from two cities.

2) Systematic sampling is easier than random sampling. In systematic sampling, a particular number, n, is counted repeatedly and each of the nth parent is picked to be sampled.

3) Convenience Sampling

This is the worst sampling technique. It is also the easiest. In Convenience sampling, they just survey the first set of parents that they find.

4) Stratified Sampling

Stratified sampling divides the population into groups called strata. A sample is taken from each of these strata using either random, systematic, or convenience sampling.

So, for this question, random sampling is used to pick a sample from the two strata (from the 2 cities). This is why the sampling used in this question is a stratified random sampling technique.

5) Cluster sampling

Cluster Sampling divides the population into groups which are called clusters or blocks (the different cities). The clusters are selected randomly, and every element in the selected clusters is surveyed (each parent in the selected cities, is surveyed!).

Hope this Helps!!!

What is the value of the 11th term in the following geometric sequence?-5, -10, -20, -40

-5,120

-100

-180

-19,531,250

Answers

Hello,

$a_(1)=-5$
$a_(2)=-5*2$
$a_(3)=-5*2^2$
...
$a_(11)=-5*2^(10)=-5120$

Answer A

A triangle has two sides of lengths 7 and 12 what value could the third side be?

Answers

$a,b,c- sides\ of \ triangle\n\nConditions\ for\ triangle \existing\n\na+b>c\nb+c>a\na+c>b\n\n\ a=7\nb=12\n\n1.\n7+12>c\ \ \ -->c<19\n2.\n12+c>7\ \ \ -->c>7-12\ \ c>\ -->-5\n3.\n7+c>12\ \ -->c>12-7\ \ -->c>5\n\nProduct \ of\ all\ conditions\n c\in(5,19)$

What's A(-2,-4),B(2,4)

Answers

AB = $\sqrt{( 2 + 2 ) ^(2) + (4 + 4)^(2) } = √(16 + 256) = √(272) = 16.49$

Pwease help fast this is mah last question!The area of the trapezium ABCD as shown in the figure (in square units) is
A) 222
B) 111
C) 224
D) 116

Answers

Answer:

A = 222 units^2

Step-by-step explanation:

To find the area of this trapezoid, first draw an imaginary horizontal line parallel to AD and connecting C with AB (Call this point E). Below this line we have the triangle CEB with hypotenuse 13 units and vertical side (21 - 16) units, or 5 units. Then the width of the entire figure shown can be obtainied using the Pythagorean Theorem:

(5 units)^2 + CE^2 = (13 units)^2, or 25 + CE^2 = 169. Solving this for CE, we get |CE| = 12.

The area of this trapezoid is

A = (average vertical length)(width), which here is:

(21 + 16) units

A = --------------------- * (12 units), which simplifies to:

A = (37/2 units)(12 units) = A = 37*6 units = A = 222 units^2

With two number cubes, what is the probability of rolling a sum of a 9?

Answers

7 out of 11 is the probability of rolling a 9

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