A student conducts a survey to determine which students at the high school completed an algebra course during their freshman year. 49, 34, and 48 students are selected at random from the Sophomore, Junior, and Senior classes. Each class has a population of 496, 348, and 481 respectively. Which type of sampling did the student use?random

stratified

systematic

cluster

Answers

Answer 1

Answer: The type of sampling done on the students is

STRATIFIED

Since the population are divided into strata (groups) according to their year level and random samples are taken from each of the stratum.

Random sampling is done when the samples are randomly taken from all the population. Systematic sampling is done when there is an interval used to determine which sample is to be taken. Cluster sampling is done when the population is grouped into cluters and samples are taken from random clusters. Cluster sampling does not ensure that samples will be taken from all clusters.

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Solve each equation for x over the set of real numbers. 3x+5/(x-1)(x^4+7)
What are the next three numbers in this pattern? 11, 22, 12, 23, . . .
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I need help choosing which multiple choice the answer would be ?

There are two types of trees: elm and pine. There should be at least 16 total trees but no more than 30. The ratio of elm trees to pine trees will be 3:2. Give an example of how many trees of each type the designer could plan for the park. Show or explain how you found your answer.

Answers

Answer: 18 pine trees / 12 elm trees

Step-by-step explanation:

To meet the requirement of at least 16 but no more than 30 trees with a 3:2 ratio of elm to pine trees, we can choose:

Elm Trees: 3x

Pine Trees: 2x

Where x is a positive integer. To stay within the given constraints:

3x + 2x ≥ 16 (at least 16 trees)

5x ≥ 16

x ≥ 16/5

x ≥ 3.2

We need to find the largest integer value for x while staying below 30 (no more than 30 trees). Since x must be an integer, the largest valid value for x is 6 (as 7 would exceed 30).

So, for the example:

Elm Trees = 3x = 3 * 6 = 18

Pine Trees = 2x = 2 * 6 = 12

In this case, there would be 18 elm trees and 12 pine trees, totaling 30 trees, which falls within the range of at least 16 but no more than 30 trees and maintains the 3:2 ratio of elm to pine trees.

What is an equation of the line in point-slope form?

(3.8) and (7,5)

Answers

This is one equation y-5=-3/4(x-7)

Decide whether the sequence 4,10,20,34,52 ....... is a linear model,Quadratic model or cubic model.

Answers

Answer:

Lineal.

Step-by-step explanation:

To determine if the sequence 4,10,20,34,52 ....... is a linear model, a quadratic model or a cubic model, the following mathematical logical reasoning must be carried out:

4 to 10 = +6

10 to 20 = +10

20 to 34 = +14

34 to 52 = +18

Thus, we can see at a glance that the sequence increases 4 numbers in each digit, adding first 6, then 10, then 14 and so on, with which the next numbers in that sequence should be 74 (+22), 100 ( +26), 130 (+30), 164 (+34), and so on.

Therefore, since there is no quadratic or cubic relationship, the sequence is linear.

Blank divided by 9 equals 6

Answers

54 divided by 9 equals 6.

well to get the answer do 9 x 6 which is 54 so your answer would be 54

Help on solving for x

Answers

$(x)/(e^5)=e^(-4)|\cdot e^5\nx=e^(-4)\cdot e^5\nx=e\approx2.72$

The volume of a cylinder is 288 cubic inches. The radius of the circular base is 4 inches. What is the height of the cylinder? 9 inches
12 inches
18 inches
36 inches

Answers

Answer:

Its 9 just so you know

V = πr2h

h =V / πr2

H = 288 / 3.14 x 4 x 4

H = 288 / 50.24

H = 5.73.

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