True, with a probability sample, the researcher has some savings in cost and/or time but at the expense of using a sample that is not truly representative of the population
Probability sampling refers to the selection of a sample from a population when this selection is based on the principle of randomization, that is, random selection or chance. Probability sampling is more complex, more time-consuming, and usually more costly than non-probability sampling. However, because units from the population are randomly selected and each unit’s selection probability can be calculated, reliable estimates can be produced and statistical inferences can be made about the population.
In a probability sampling method, in order to reduce cost and/or time, researchers resort to a selection process that is inherently biased. As a result, they use a sample for research that is not truly representative of the population.
So,the answer is true, with a probability sample the researcher has some savings in cost and/or time but at the expense of using a sample that is not truly representative of the population
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Determine which integers in the set S:{−2, 2, 12, 24} make the inequality 4(j − 2) > 4(6 − 3j) true. Helppppppp neeed asap
S:{2, 24}
S:{12, 24}
S:{−2, 2}
S:{−2, 12}
Answer:
{12, 24 }
Step-by-step explanation:
4(j - 2) > 4(6 - 3j) ← distribute parenthesis on both sides
4j - 8 > 24 - 12j ( add 12j to both sides )
16j - 8 > 24 ( add 8 to both sides )
16j > 32 ( divide both sides by 16 )
j > 2
the only values from set S greater than 2 are 12 and 24 , so
{ 12, 24 } make the inequality true
In the formula for average rate of change, what does the triangle in front of the x and y stand for? a. interval between x and y c. delta notation-change in y over change in x b. initial value of x and y d. the percent rate of change of y and x
The triangle in front of the x and y represents the ratio of the change in y to the change in x. Option C is the correct choice based on this interpretation.
The calculation involves determining the average rate of change between two given points, namely (x₁, y₁) and (x₂, y₂).
The average Rate of Change is given by, = ∆y / ∆x
where ∆y represents the change in the y-values [tex](y_2_-y_1)[/tex], and ∆x represents the change in the x-values [tex](x_2 - x_1)[/tex] between the two points on the function.
In the average rate of change formula, the triangle symbol (∆) preceding the x and y denotes the delta notation, which signifies "change in." More precisely, it indicates the change in y divided by the change in x.
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Given MN is perpendicular to MP, PQ is perpendicular to MP, and NR is congruent to OR. Prove triangle NRP is congruent to triangle QRM
1. [tex]\overline{MN} \perp \overline{MP}[/tex], [tex]\overline{PQ} \perp \overline{MP}[/tex] (given)
2. [tex]\angle NMP[/tex] and [tex]\angle MPQ[/tex] are right angles (definition of perpendicular lines)
3. [tex]\angle NMP \cong \angle MPQ[/tex] (all right angles are congruent)
4. [tex]\overline{NR} \cong \overline{QR}[/tex] (given)
5. [tex]\angle NRM \cong \angle QRP[/tex] (vertical angles)
6. [tex]\triangle PRQ \cong \triangle MRN[/tex] (AAS)
7. [tex]\overline{MR} \cong \overline{RP}[/tex] (CPCTC)
8. [tex]\angle NRP \cong \angle MRQ[/tex] (vertical angles)
9. [tex]\triangle NRP \cong \triangle QRM[/tex] (SAS)
a plane, 50 miles away from its destination, is flying toward the airport at an altitude of 30,500 feet. later, this same plane is 20 miles from the airport and has descended to an altitude of 18,000 ft. how far has the plane flown?
Using the geometry from the question and using the Pythagorean theorem with the distance provided, The answer is 30.09 miles.
What is unit conversion?By definition, unit conversion refers to the division or multiplication operation used to convert measurements of the same quantity between various units.
What is Pythagorean theorem and it's formula?The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a basic relationship between a right triangle's three sides in Euclidean geometry.
It's formula is:
[tex]h^{2} = p^{2} +b^{2}[/tex]
h1=30500 feet = 5.77 miles
d1= 50 miles
h2= 18000 feet = 3.4 miles
d2= 20 miles
for right angle triangle,
height = h1-h2 = 2.37 miles
distance = 50-20 = 30 miles
plane flown = [tex]\sqrt{2.37^{2}+30^{2}}[/tex]
=30.09 miles
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Try it #3
Pls help!
Find the biggest common factor between the ratio's two terms to write the ratio in its simplest form. The largest number that equally divides both numbers is known as the greatest common factor of two numbers.
How do you express a ratio in its simplest form?1 : 1/2 = 2 : 1
Add whole numbers to the values.
Create a fraction with the full number 1 as the denominator.
Next, we have:
1 : 1/2 = 1/1 : 1/2
Remove the denominators from fractions to convert them to integers.
We discover the Least Common Denominator and rewrite our two fractions as necessary using the common denominator because our two fractions have unlike denominators.
1 1/3 : 4 4/7 = 7 : 24
There are now:
1 1/3 : 4 4/7 = 4/3 : 32/7
Remove the denominators from fractions to convert them to integers.
We discover the Least Common Denominator and rewrite our two fractions as necessary using the common denominator because our two fractions have unlike denominators.
0.360 : 0.153 = 40 : 17
Add whole numbers to the values.
By multiplying both sides by 103 = 1000 to remove all three decimal places, you can convert any decimal values to integers.
Next, we have:
0.360 : 0.153 = 360 : 153
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what is the the difference between a repeating decimal and a nonstop decimal on the rational numbers chart
Repeating decimals are those numbers that, following the decimal point, continue to repeat the same value. The term "non-repeating rational numbers" refers to decimal numbers that do not repeat their value after the decimal point.
Repeating decimals are those numbers that, following the decimal point, continue to repeat the same value. Recurring numbers is another name for these figures. The term "non-repeating rational numbers" refers to decimal numbers that do not repeat their value after the decimal point.
A repeating decimal can be a rational number, and any integer is a rational number since it can be expressed as a fraction by simply assigning it a denominator of 1. Then, by multiplying and dividing the decimal according to its place values, we can also state that a terminating decimal can be expressed as a fraction.
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question in screenshot (need help ASAP)
what is the product of all constants $k$ such that the quadratic $x^2 kx 15$ can be factored in the form $(x a)(x b)$, where $a$ and $b$ are integers?
The value of k as calculated from the information provided is -16 , -8 , 8 , 16.
The given equation is,
x² + kx + 15
= ( x + a ) (x + b)
= x² + (a + b ) x + ab
Therefore,
k = a + b
ab = 15
as known , a and b are integers,
15 = ( -1 x -15 ) , ( 1 x 15)
15 = (-3 x -5) , (3 x 5 )
Therefore,
k = -1 -15
= -16
and
k = -3 - 5
=8
The values of k are -16 , -8 , 8 , 16.
The collection of whole numbers and negative numbers is known as an integer in mathematics. Integers, like whole numbers, do not include the fractional portion. Integers can therefore be defined as numbers that can be positive, negative, or zero but not as fractions.
On integers, we can carry out all arithmetic operations, including addition, subtraction, multiplication, and division. Integer examples include 1, 2, 5, 8, -9, -12, etc. "Z" stands for an integer.
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Given that a line has a y-intercept of 3 and a slope of 4, write an equation for the line in slope intercept form.
a. y=3x+4
b. y=4x+3
c.y=(-3/4)x+3
d.y=(4/3)x+4
Answer:
equation of the line should be y=3x+4.
Step-by-step explanation:
I apologize if i'm wrong :)
Which of the following represents a true statement
The equation on indices that represents a true statement is B . 14 ⁰ x 14 ³ = 14 ³.
How to multiply indices ?When multiplying indices , we follow the Law of Indices which states that when multiplying indices with the same base , we simply keep the base and add the indices . For division with the same base , we subtract the indices from each other .
The answer to 14 ⁰ x 14 ³ is therefore :
= 14 ⁰ x 14 ³
= 14 ⁰ ⁺ ³
= 14 ³
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STEP BY STEP please help me asap please !!!???
Answer:
(A) 19 times, 16 people.
Step-by-step explanation:
There are 374 people in line and 16 people leave the line without riding, so there are 374 - 16 = <<374-16=358>>358 people who want to ride the Caterpillar.
The Caterpillar seats 18 people, so it must run 358/18 = <<358/18=19.89>>19.89 times to accommodate all the riders.
Since the Caterpillar cannot run a fraction of a time, it must run 19 times.
There are 358 people who want to ride and the Caterpillar can accommodate 19 x 18 = <<19*18=342>>342 of them, so there are 358 - 342 = <<358-342=16>>16 people on the last ride.
Therefore, the Caterpillar runs 19 times and there are 16 people on the last ride, so the answer is (A) 19 times, 16 people.
Tell me if this helped :)
Sam wants to build a wooden deck on his patio, which is in the shape of a parallelogram. The
area of the patio is 350 ft2. Find the base. Round your answer to the nearest foot.
Hint : Use A = bh.
We may calculate our answer using fractions and the fact that the base is 18.3 feet.
What are fraction ?The components of a whole or group of items are represented by fractions. A fraction consists of two components.
The numerator is the figure at the top of the line. It details the number of equal portions that were taken from the total or collection.
The denominator is the figure that appears below the line. It displays the total number of identical objects in a collection or the total number of equal sections the whole is divided into.
There are three different methods to express a fraction: as a fraction, as a percentage, or as a decimal. Let's examine each of the three representational styles.
According to our question-
The patio is 280 square feet in size. locate the base.
Height = 5x Area = 280 feet square
Base = 6x
The parallelogram A's area can be expressed mathematically as;
Base + height equals area.
A = b×h
the values of area, base, and height are substituted.
280 = 5x × 6x = 30x^2 \sx^2 = 280/30 \sx = √(280/30)
Given that the base is 6x,
swapping out x's value.
Base = 6x = 6(√(280/30))
Base=18.3 feet
18.3 ft tall is the base
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Answer:
At short 18.7 ft is the answer
Hello can someone help me out with these two questions!?!?! This will help me a lot thank you! :D
The solution to the first inequality is x ≥ -2. Option 1 is correct. The solution to the second inequality is x ≤ -7. Option 1 is correct.
What is inequality?When two expressions are connected by a sign like "not equal to," "greater than," or "less than," it is said to be inequitable. The inequality shows the greater than and less than relation between variables and the numbers.
A number line in elementary mathematics is a representation of a graduated straight line that serves as an abstraction for real numbers, represented by the symbol R." It is assumed that every point on a number line corresponds to a real number and that every real number corresponds to a point.
The inequalities are,
2( x +6 ) > -6( x +1) +2
2x + 12 > -6x - 6 + 2
2x + 6x > -12 - 6 +2
8x > -16
x > -2
-3x - 1 ≥ 20
-3x ≥ 21
x ≥ -7
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At a little-known vacation spot, taxi fares are a bargain. A 21-mile taxi ride
takes 28 minutes and costs $8.40. You want to find the cost of a 48-minute taxi ride. What unit price do you need?
The unit price of a taxi cost is $0.30 per minute. And the total cost of a 48-minute taxi ride will be $14.4.
What is the rate?The rate is the ratio of the amount of something to the unit. For example - If the speed of the car is 20 km/h it means the car travels 20 km in one hour.
At a generally secret getaway destination, taxi passages are a deal. A 21-mile taxi ride requires 28 minutes and expenses $8.40.
The number of dollars in each minute that the taxi driver charges will be given as,
Rate = $8.40 / 28
Rate = $0.30 per minute
If the taxi ride is of 48-minute. Then the total cost is given as,
Total cost = $0.30 x 48
Total cost = $14.4
The unit cost of a taxi cost is $0.30 each moment. Furthermore, the complete expense of a 48-minute taxi ride will be $14.4.
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When solving an equation, Tina gets to the last of line of her work and is left with "7=7." What does this mean?
A
The solution is 7.
B
There is infinite solutions.
C
There is only one solution.
D
There is no solution.
The last line of a solution is 7 = 7. It means there is infinite solutions.
What are types of solution of linear equation?
The points where the lines representing the intersection of two linear equations intersect are referred to as the solution of a linear equation. In other words, the set of all feasible values for the variables that satisfy the specified linear equation constitutes the solution set of the system of linear equations.
The set of linear equations can have one of three different sorts of solutions. As follows:
1) unique solution
2) No solution
3) Infinite solutions
Given that the last line after solving an equation is 7 = 7.
Since the LHS and RHS of the equation is same thus it has infinite many solution.
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Word Problems: (please write out the equations and solve it)
1. David is going out for a pizza. The Pizza costs $10.50 plus $1.50 for each extra
topping ,x. Write an equation to represent the total cost of the pizza, t.
Dependent variable:
Independent variable:
Equation:
Use your equation to determine the total cost of the pizza with 3 extra
toppings.
The total cost of the pizza is
Dependent variable: t (total cost of the pizza)
Independent variable: x (number of extra toppings)
Equation: t = 10.50 + 1.50x
To determine the total cost of the pizza with 3 extra toppings, plug in x = 3 into the equation:
t = 10.50 + 1.50(3)
t = 10.50 + 4.50
t = 15.00
So the total cost of the pizza with 3 extra toppings is $15.00.
What is Dependent Variables?
The dependent variable is the variable that is being measured or studied in a statistical or scientific research study. It is called the dependent variable because it is believed to depend on the value of one or more other variables, known as the independent variables.
What is Independent Variables?
Independent variables are variables that are manipulated or controlled by the researcher in a scientific or statistical study. They are called independent variables because they are believed to have an effect on the dependent variable, which is the variable being measured or studied.
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Jada has a meal in the Bobby Salazar's restaurant. The subtotal on her bill was $48. If the tax rate is 8% how much was the tax? (round to the nearest cent)
Answer:
Tax = $3.84
Total = $51.84
Step-by-step explanation:
48 • 8%
48 • 8/100 = 3.84
48 + 3.84 = 51.84
The Fernandez family has a square kitchen with an area of 182.25\ m^{2}182.25 m
2
.
Find the perimeter of the Fernandez' square kitchen, in meters
Answer:D 3,215.36 square feet. 1.9m. 2)
Step-by-step explanation:
Answer:
perimeter = 54.08
Step-by-step explanation:
We are told that the area of a square kitchen is 182.25 m². We are then asked to calculate the perimeter of the kitchen.
The perimeter of a shape is simply the sum of the length of its sides. Therefore, in order to calculate the perimeter of the kitchen, we need to know the length of its sides.
Given that we know the area of the square kitchen, we can use the formula:
[tex]\boxed{\mathrm{Area = side^2}}[/tex],
and rearrange it to make the side the subject:
Area = side²
⇒ [tex]182.25 = \mathrm{side^2}[/tex]
⇒ [tex]\sqrt{182.85} = \mathrm{\sqrt{side^2}}[/tex] (taking the square root of each side)
⇒ [tex]13.52 = \mathrm{side}[/tex]
⇒ side = 13.52 m
Therefore, the length of each side of the square kitchen is 13.52 m.
A square has 4 sides; therefore the perimeter of the kitchen can be calculated as follows:
perimeter = [tex]4 \times 13.52[/tex]
= [tex]\bf 54.08 \ m[/tex]
Therefore, the perimeter of the square kitchen is 54.08 m.
Find the inverse of the function f(x) = 3x + 2. State the answer in slope-intercept form.
By the way, you cannot make a negative number of donuts or pizzas.
Using x for the number of donuts produced each hour and y for the number of pizzas for each hour, choose the inequality/inequalities to represent this constraint.
The required inequality for the pizzas and donuts can be represented as, nx + ny > 0.
What is inequality?Inequality shows relation between two expression which are not equal to each others.
Number of donuts produced each hour = x,
And number of pizzas produced each hour = y.
Let for n hours, donuts and pizzas are produced.
So the inequality for the positive number of pizzas and donuts, the inequality can be presented as,
nx + ny > 0
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To represent the constraints, the inequalities are x ≤ n and y ≤ m.
What is an inequality?When two expressions or values are not equal to one another, this connection is referred to as "inequality" in mathematics.
Let you can make at most n numbers of donuts per hour.
If x represents the number of donuts produced per hour.
To write an inequality to represent this:
x ≤ n.
And also, you can make at most m number of pizzas per hour.
If represents the number of pizzas produced per hour.
To write an inequality to represent this:
y ≤ m.
You may use a variety of methods to eliminate the inequality, including multiplying or dividing each side by the same positive number, adding or subtracting the same amount from each side, and more. If either side is multiplied or divided by a negative value, the inequality sign must be reversed.
Therefore, the inequalities are x ≤ n and y ≤ m.
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Michael and Maria saw 6 cupcakes on the table. Michael ate 1/3 of the cupcakes. Maria ate 1/2 cupcakes. How many cupcakes are left on the table?
A:1 cupcake
B:1 1/2 cupcakes
C:4 2/5 cupcakes
D:2 cupcakes
Answer: The answer is C
Step-by-step explanation:
6- 1/3 - 1/2 = 4 2/5
Use long division to find the quotient below.
(5x5 + 90x² - 135x) + (x+3)
O A. 5x -5x³ + 25x² - 45x
OB. 5x4-15x³ + 45x² - 45x
O C. 5x + 5x³-25x² - 45x
○ D. 5x¹ + 15x³ - 45x² - 45x
Use long division to the quotient is [tex]5 x^5+90 x^2-134 x+3[/tex]
What is quotient?
A quotient in mathematics is the amount created by dividing two numbers. In mathematics, the term "quotient" is frequently used to refer to the integer portion of a division, as well as to a fraction or a ratio.A fraction's quotient is the whole number that results from simplifying the fraction. The quotient is the fraction's decimal form if the simplified fraction yields a non-whole number.
[tex]\begin{aligned}& \text { Simplify }\left(5 x^5+90 x^2-135 x\right)+(x+3): \quad 5 x^5+90 x^2-134 x+3 \\& \text { Steps } \\& \left(5 x^5+90 x^2-135 x\right)+(x+3)\end{aligned}[/tex]
[tex]Simplify $\left(5 x^5+90 x^2-135 x\right)+(x+3): \quad 5 x^5+90 x^2-135 x+x+3$[/tex]
[tex]=5 x^5+90 x^2-135 x+x+3[/tex]
[tex]Add similar elements: $-135 x+x=-134 x$[/tex]
[tex]=5 x^5+90 x^2-134 x+3[/tex]
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I need help with these
Answer:
[tex] = \frac{11}{10} \\ \\ [/tex]
this is the correct answer for first question
75 points
Which statement is true about the relationship between the amount of plant food remaining and the number of days?
A. This relationship is not a function because only one amount of plant food remains each day.
B. This relationship is a function because only one amount of plant food remains each day.
C. This relationship is not a function because more than one amount of plant food remains each day.
D. This relationship is a function because more than one amount of plant food remains each day.
Answer:
Step-by-step explanation:
it is A/ this relationship is not a function because only one amount of plant food remains each day.
Answer:
it is A/ this relationship is not a function because only one amount of plant food remains each day.
Step-by-step explanation:
Annapurna suppliers sold construction materials of
Rs. 4,40,000 to Angel suppliers making 10% profit
and adding 13% VAT. Angel suppliers spent Rs. 5,000
for transportation cost and made 10% profit on the
purchased price excluding VAT and levied local tax Rs.
2500 and sold to constructor. What VAT amount should
be paid by the constructor?"
Ans: Rs. 70187
First, we need to find the price that Angel suppliers paid for the construction materials, including the profit made by Annapurna suppliers and the VAT.
The price that Annapurna suppliers sold the materials for was Rs. 4,40,000 + Rs. 4,40,000 * 10% = Rs. 4,84,000.
The VAT that Annapurna suppliers added was Rs. 4,84,000 * 13% = Rs. 62,820.
So, the total price that Angel suppliers paid was Rs. 4,84,000 + Rs. 62,820 = Rs. 5,46,820.
Next, we need to find the price that the constructor paid for the materials, including the profit made by Angel suppliers, the transportation cost, the local tax, and the VAT.
The profit that Angel suppliers made was Rs. 5,46,820 * 10% = Rs. 54,682.
The total price that the constructor paid was Rs. 5,46,820 + Rs. 54,682 + Rs. 5,000 + Rs. 2,500 = Rs. 6,58,002.
The VAT that the constructor should pay is Rs. 6,58,002 * 13% = Rs. 70187.
Therefore, the answer is Rs. 70187.
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Solve the equation below. Only 1 term should be entered in each blank space.
Begin by reducing the fraction on the left by the greatest common factor and entering the new denominator
Since the terms on the left side of the equation are all divisible by that denominator, simplify the left side of the equation
Answer:
it's not easy but I'll try my best when I get the answer I'll come back thanks
(redo) A mistake was made in the steps shown to simplify the expression. which step includes the mistake?? EDMENTUM
The step in which there was a mistake in the simplification of the expression is given as follows:
A. Step 5.
How to simplify the expression?The expression in this problem is defined as follows:
(1 + 3²)/5 + |-10|/2
The first step is applying the absolute value of -10, which is the distance of -10 from the origin of 0, hence it is of 10 and the expression is given then by:
(1 + 3²)/5 + 10/2.
Then the square is applied to 3², as 3 x 3 = 9, hence:
(1 + 9)/5 + 10/2
The parenthesis takes precedence, hence:
10/5 + 10/2.
The first quotient takes precedence, hence:
2 + 10/2.
Then in Step 5 there was the mistake, as the quotient takes precedence over the addition, meaning that the expression should have been simplified as follows:
2 + 5 = 7.
This means that option A is correct.
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I need to know what p is 12.4 - p =7.9
Answer: p = 4.5
Step-by-step explanation:
12.4 - 4.5 = 7.9
Answer: p=4.5
Step-by-step explanation:
You do it like this: 12.4=7.9+p
12.4-7.9=p
p=4.5
The length of a rectangle is four times its width.
If the perimeter of the rectangle is 100 m, find Its area.
Answer:4
Step-by-step explanation:
rectangular prism 1 829 equals the conterpostiive
Using composition of functions, determine if the two functions are inverses of each other. A. No, because the functions contain different operations. B. Yes, for all values x ≥ 0. C. No, because the composition does not result in an answer of x. D. Yes, because F(x) is equal to –G(x).
Yes, for all values x ≥ 0. If the composition of the two functions is equal to the identity function for all values of x in their domain, then the two functions are inverses of each other.
What is composition of functions?Composition of functions is a mathematical operation that involves combining two functions to form a new function. To determine if two functions are inverses of each other using composition of functions, we need to first define the two functions and then determine if the composition of the two functions is equal to the identity function (f(x) = x).If the composition of the two functions is equal to the identity function for all values of x in their domain, then the two functions are inverses of each other. In this case, the correct answer is B: Yes, for all values x ≥ 0.To learn more about composite functions refer :
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