Answer:
36 feet squared
Step-by-step explanation:
Finding the perimeter of an object is adding all of the sides together. If the width of the rug is 6 feet then we know that there are two sides that length. Add those together.
6 feet + 6 feet = 12 feet
You would subtract the number you get from the perimeter.
24 feet - 12 feet = 12 feet
And then divide the number by the number of sides left, 2, to get each of their lengths.
12 feet / 2 feet = 6 feet
To find the area of a rectangle you multiply length times width, which in this case both are 6 feets.
6 feet x 6 feet = 36 feet squared
79. Revenue. The revenue (in dollars) from the sale of x infant car seats is given by R1x2 = 60x - 0.025x2 0 ... X ... 2,400 (A) Find the average change in revenue if production is changed from 1,000 car seats to 1,050 car seats. (B) Use the four-step process to find R′1x2. (C) Find the revenue and the instantaneous rate of change of revenue at a production level of 1,000 car seats, and write a brief verbal interpretation of these results.
Question:
59 Revenue. The revenue (in dollars) from the sale of x infant car seats for infants is given by
R(x) =60·x - 0.025·x² 0 ≤ x ≤ 2400
(A) Find the average change in revenue if production is changed from 1,000 car seats to 1,050 car seats.
(B) Use the four-step process to find
(C) Find the revenue and the instantaneous rate of change of revenue at a production level of 1,000 car seats, and write a brief verbal interpretation of these results
Answer:
(A) $437.5
(B) R'(x) = 60 - 0.05·x
(C) $10
Step-by-step explanation:
(A) Here we have the change in revenue when production is increased from 1,000 car seats to 1,050 car seats is given as follows;
R(1050) - R(1000) = 60×1050 - 0.025×1050² - (60×1000 - 0.025×1000²)
R(1050) - R(1000) = 63000 - 27562.5 - 35000 = $437.5
(B) R'(x) is given by
Step 1. R(x + h) = 60·(x+h) - 0.025·(x+h)²
Step 2 R(x + h) - R(x) = 60·(x+h) - 0.025·(x+h)² - 60·x - 0.025·x² = [tex]-\frac{h^2+(2x-2400)h}{40}[/tex]
Step 3
[tex]\frac{R(x+h)- R(x)}{h} = -\frac{h^2+(2x-2400)h}{40 \times h} = -\frac{h +2x - 2400}{40}[/tex]
Step 4
[tex]\lim_{h \to 0} \frac{R(x+h)- R(x)}{h} = \lim_{h \to 0} -\frac{ h +2x - 2400}{40}[/tex]
∴ R'(x) = 60 - 0.05·x
(c) The revenue at a production level of 1000 car seats is
R(1000) = (60×1000 - 0.025×1000²) = $35,000
The instantaneous rate of change of revenue is given as follows
R'(x) = 60 - 0.05·x = 60 - 0.05×1000 = $10.
A) The average change in revenue when production is changed from 1,000 car seats to 1,050 car seats is $8.75. B) The derivative of the revenue function R1(x) with respect to x is R′1(x) = 60 - 0.05x. C) At a production level of 1,000 car seats, the revenue is $35,000 and the instantaneous rate of change of revenue is $10.
Explanation:(A) To find the average change in revenue, we need to calculate the change in revenue and divide it by the change in the number of car seats produced. Let's calculate:
For 1,000 car seats, the revenue is R1(1000) = 60(1000) - 0.025(10002) = $60,000 - $25,000 = $35,000.For 1,050 car seats, the revenue is R1(1050) = 60(1050) - 0.025(1050x2) = $63,000 - $27,562.50 = $35,437.50.The change in revenue is $35,437.50 - $35,000 = $437.50.The change in the number of car seats produced is 1,050 - 1,000 = 50.The average change in revenue is $437.50/50 = $8.75.(B) To find R′1(x), we need to calculate the derivative of the revenue function R1(x) with respect to x. Let's differentiate:
R′1(x) = d/dx(60x - 0.025x2) = 60 - 0.05x
(C) At a production level of 1,000 car seats, the revenue is $35,000. The instantaneous rate of change of revenue (also known as the marginal revenue) at this production level can be found by substituting x = 1,000 into R′1(x):
R′1(1000) = 60 - 0.05(1000) = 60 - 50 = $10. The revenue at this production level is $35,000 and the instantaneous rate of change of revenue is $10, which represents the additional revenue obtained from producing one additional car seat.
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Which ordered pair is a solution of the equation y-4=7(x-6)
Answer:
y=7x-38
Step-by-step explanation:
A company specializing in foreign language lessons sells one set of lessons for $199, but all five sets of lessons purchased upfront sell for $499, a discount of nearly 50%. The company is offering this large discount in hopes that its consumers experience:
Answer:
Overconfidence
Step-by-step explanation:
In this question we have a company that is offering a certain higher discount when a customer purchases its wares at bulk rather than in bits, we want to know what exactly the customer wants its company to experience.
The correct answer to this is overconfidence. The company wants its customers to experience overconfidence by going for the second option which shows a massive reduction in value of what they should pay
find the value of sin(θ) for an angle θ in standard position with a terminal ray that passes through the point (-5, -12)
Answer:
c. -12/13
Step-by-step explanation:
it will be the y-coordinate divided by the distance from the origin, or (-12) / [tex]\sqrt{5^2+12^2}[/tex] = -12/13
Answer:
C. -12/13
Step-by-step explanation:
(-5,-12) is in the third quadrant
So sin would be negative
Hypotenuse = sqrt(5² + 12²)
sqrt(169)
13
sin(theta) = -12/13
Just Logarithms! 80 points!
1. Evaluate: log216
Select the appropriate response
A) 0
B) -1
C) 7
2. Express as a simple logarithm 2loge2+3logen.
Select the appropriate response:
A) Ln 2n2
B) ln 4n3
C) 4Ln 2n2
3. Solve log3 (27)
Select the appropriate response
A) 1
B) 2
C) 3
D) 8
4. Solve log2 (64)
Select the appropriate response:
A) 6
B) 5
C) 4
D) 13
5. Solve: log5 (625)
Select the appropriate response
A) 4
B) 6
C) 9
D) 2
6. Evaluate: log216
Select the appropriate response
A) 5
B) 8
C) 4
7. Solve log3 (81)
Select the appropriate response
A) 8
B) 6
C) 4
D) 72
8. Solve log4 (1)
Select the appropriate response
A) 0
B) 3
C) 1
D) 5
Also I don’t know why there is one two times with different answers
1. A) 0 (I’m not totally sure since there are two of the same thing, but with different answers.)
2. (Not sure)
3. C) 3
4. A) 6
5. A) 4
6. C) 4 (I’m pretty sure it’s 4 if it’s in the way I think it should be in to get 4.)
7. C) 4
8. A) 0
(I tried my best, I’m probably wrong, because I don’t exactly know how to do logarithms yet. Sorry if I got some wrong.)
Answer:
1) B
2) B
3) C
4) A
5) A
6) C
7) C
8) A
antiderivative of Find the most general antiderivative of the function. (Check your answer by differentiation. Use C for the constant of the Find the most general antiderivative of the function. (Check your answer by differentiation. Use C for the constant of the antiderivative.) f(x) = 6 x 5 − 8x4 − 9x2.) f(x) = 6x5 − 8x4 − 9x2 the function.
Answer:
x^6 - (8/5)x^5 - 3x^3 + C.
Step-by-step explanation:
f(x) = 6x^5 - 8x^4 - 9x^2.
Using the general form antiderivative of Ax^m = Ax(m+1) / (m+1)+ C:
Antiderivative = 6 * x^(5+1) / 6 - 8 * x^(4+1) / 5 - 9 * x^(2+1) / 3 + C
= 6x^6/6 - 8x^5/5 - 9x^3/3 + C
= x^6 - (8/5)x^5 - 3x^3 + C.
Differentiating:
f'(x) = 6x^(6-1) - 8 x^(5-4) - 9x^(3-1) + 0
f'(x) = 6x^5 - 8x^4 - 9x^2.
The most general antiderivative of the given function f(x) = 6x5 − 8x4 − 9x2 is F(x) = x^6 - 8/5 * x^5 - 3x^3 + C, where C is the constant of the antiderivative.
Explanation:To find the most general antiderivative of the given function f(x) = 6x5 − 8x4 − 9x2, we need to perform the process of integration, which is the reverse of differentiation. The antiderivative F(x) will be found by integrating each term of the function separately.
The antiderivative of f(x) will then be:
F(x) = ∫6x5 dx - ∫8x4 dx - ∫9x2 dx,
Transitioning to the next step by applying the power rule for integration, we add 1 to the exponent and divide by the new exponent, we obtain
F(x) = 6/6 * x^(5+1) - 8/5 * x^(4+1) - 9/3 * x^(2+1) + C
Simplified, the antiderivative F(x) becomes:
F(x) = x^6 - 8/5 * x^5 - 3x^3 + C,
where C is the constant of the antiderivative.
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4+35=23+43-23+46-34-34+6
Answer:
4+35=39, 23+43-23+46-34-34+6=27. So it is a no solution question.
Step-by-step explanation:
Both of the equations do not equal
Answer:
69
Step-by-step explanation:
I love the number 69, and tbh it's the answer to everything
Bryan is asked to write an inequality to represent the graph.
A number line going from negative 16 to negative 10. An open circle is at negative 14. Everything to the right of the circle is shaded.
He writes Negative 14 less-than-or-equal-to x.
Which error did Bryan make?
Answer:
c
Step-by-step explanation:
The error was to include the number -14 in the inequality.
What is an Inequality?An inequality is a statement that is formed when two expressions are joined using an inequality operator.
The inequality that represents the statement is
x > -14
Bryan wrote the inequality as x ≥ -14 , which is wrong as there is an open circle at -14 on the number line.
An open circle depicts that the number is not included.
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Weekend Curfews
Determine the values of the letters to complete the
conditional relative frequency table by column.
16 Years
Old
17 Years
Old
Total
0.9
b
0.88
Before
10 p.m.
After
10 p.m.
0.15
0.12
1
Total |
1.0
1.0
Answer: therefore A= 0.1 and B=0.85
Step-by-step explanation:
The values of 'a' and 'b' in the frequency table are 0.1 and 0.1
We have,
To complete the conditional relative frequency table, we need to find the values of the letters 'a' and 'b'.
We know that the total for each row and column should add up to 1.
So, we can use this information to set up two equations and solve for the values of 'a' and 'b'.
Equation 1:
0.9 + b = 0.88
This equation represents the total percentage of students aged 16 years who finish homework before 10 pm.
We subtract 0.9 and 0.88 from both sides to get:
b = 0.88 - 0.9
b = -0.02
This means that the value of 'b' is negative, which doesn't make sense.
So, we made an error in setting up the equation.
We can check the table to find the correct value of 'b'.
We know that the total for the column "Before 10 pm" should be 1.
This means that the sum of the percentages 0.9 and 'b' should be equal to 1.
So,
Equation 2:
0.9 + b = 1
Solving for 'b', we get:
b = 1 - 0.9
b = 0.1
Now, we can use Equation 2 to solve for 'a':
0.15 + a = 0.12
Subtracting 0.15 from both sides, we get:
a = 0.12 - 0.15
a = -0.03
Again, we get a negative value for 'a', which doesn't make sense.
So, we need to check our work again.
We know that the total for the row "16 years" should be 1.
This means that the sum of the percentages 0.9 and 'a' should be equal to 1.
So,
0.9 + a = 1
Solving for 'a', we get:
a = 1 - 0.9
a = 0.1
Therefore,
The values of 'a' and 'b' in the frequency table are 0.1 and 0.1
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simplify 48x^7-(-8x^7)
Answer:
56x^7
Step-by-step explanation:
48x^7-(-8x^7) = 48x^7 + 8x^7 = 56x^7
What is the diagonal length of the suitcase
Answer: The diagonal length of the suitcase is 30 inches. Assuming that the length and height of the suitcase form a right angle (90 degree angle), you can use the Pythagorean Theorem ( a2+b2 = c2) to solve this problem. The diagonal length is equal to the square root of the sum of the length squared and the height squared.
Step-by-step explanation:
Answer:
30
Step-by-step explanation:
if you think about a rectangle cut by its diagonal then yoou can see that its just 2 right triangles and youre looking for the long end
Using pythagorean theorem you put in the numbers
[tex]24^{2} + 18^2 = c^2[/tex]
solving gives you
[tex]900 = c^2[/tex]
[tex]\sqrt{900} = c[/tex]
30 = c
Your friend has two standard decks of 52 playing cards and asks you to randomly draw one card from each deck. What is the probability that you will draw two spades? Express your first answer as a fraction in simplest form
Answer:
Hence the probability of getting 2 spades will be 1/16
Step-by-step explanation:
Given:
Two deck if playing cards
To Find:
Probability that will get two spades
Solution:
As we know that ,there 52 playing cards in a deck
and 13 of that are spades
So probability of getting spade from a deck is ,
P(spades)=total number of spades /Total number of cards.
P=13/52
P=1/4
Similar for the second deck of card,
Required probability is that , getting spades from each deck
It is given by,
Required probability =Probability of spades in 1st AND Probability of spade in 2nd deck
As there is use of AND operator there should multiplication of two events,
Required probability =1/4*1/4
=1/16
Vicente se gasta 20 euros en un pantalón y una camisa. No sabe el precio de cada prenda, pero sí sabe que la camisa vale dos quintas partes de lo que vale el pantalón. ¿Cuánto vale el pantalón?
Answer:
14.3€
Step-by-step explanation:
Let:
[tex]C=Price\hspace{3}of\hspace{3}the\hspace{3}shirt\\P=Price\hspace{3}of\hspace{3}the\hspace{3}pants\\T=Total\hspace{3}cost[/tex]
Now, let's write the data provided by the problem, using algebraic notation.
The total cost of the clothes is 20€, so:
[tex]P+C=T\\\\P+C=20[/tex]
The price of the shirt is :
[tex]C=\frac{2}{5} P[/tex]
Replacing this value into the first equation:
[tex]P+\frac{2}{5} P=20[/tex]
Solving for P:
[tex]\frac{7}{5} P=20\\\\P=\frac{100}{7} \approx 14.3[/tex]
So, the price of the pants is 14.3€ and the price of the shirt is:
[tex]C+14.3=20\\\\C=20-14.3=5.7[/tex]
Translation:
Deja que:
[tex]C=Precio\hspace{3}de\hspace{3}la\hspace{3}camisa\\P=Precio\hspace{3}del\hspace{3}pantalon\\T=Costo\hspace{3}total[/tex]
Ahora, escribamos los datos proporcionados por el problema, usando notación algebraica.
El costo total de la ropa es de 20 €, entonces:
[tex]P+C=T\\\\P+C=20[/tex]
El precio de la camisa es:
[tex]C=\frac{2}{5} P[/tex]
Reemplazando este valor en la primera ecuación:
[tex]P+\frac{2}{5} P=20[/tex]
Resolviendo para P:
[tex]\frac{7}{5} P=20\\\\P=\frac{100}{7} \approx 14.3[/tex]
Entonces, el precio del pantalón es de 14.3 € y el precio de la camisa es:
[tex]C+14.3=20\\\\C=20-14.3=5.7[/tex]
The price of the pants is 14.3€ and the price of the shirt is: [tex]C+14.3=20\n\nC=20-14.3=5.7[/tex].
Let:
[tex]C=Price\hspace{3}of\hspace{3}the\hspace{3}shirt\nP=Price\hspace{3}of\hspace{3}the\hspace{3}pants\nT=Total\hspace{3}cost[/tex]
Now, let's write the data provided by the problem, using algebraic notation.
The total cost of the clothes is 20€, so:
P+C=T\n\nP+C=20
The price of the shirt is :
C=(2)/(5) P
Replacing this value into the first equation:
P+(2)/(5) P=20
Solving for P:
[tex](7)/(5) P=20\n\nP=(100)/(7) \approx 14.3[/tex]
So, the price of the pants is 14.3€ and the price of the shirt is:
[tex]C+14.3=20\n\nC=20-14.3=5.7[/tex].
Complete question :-
Vicente spends 20 euros on a pair of pants and a shirt. He doesn't know the price of each item, but he does know that the shirt costs two-fifths of what the pants cost. How much do the pants cost?
Which equation can be used to find the surface area of the cylinder?
A cylinder with a diameter of 6 centimeters and height of 14 centimeters.
S = 2 pi (14) squared + 2 pi (14) (6)
S = 2 (3) squared + 2 (3) (14)
S = 2 pi (6) squared + 2 pi (6) (14)
S = 2 pi (3) squared + 2 pi (3) (14)
Answer:
S = 2 pi (3) squared + 2 pi (3) (14)
Step-by-step explanation:
The formula for the area of a circle is ...
A = πr²
The cylinder has two circular bases with radius 3 cm, so their combined area in square centimeters is ...
A = 2π(3²) . . . . . . matches a term in the last choice
__
The lateral area of the cylinder is the product of the height and the circumference of the base. That is ...
A = 2πrh
For the given radius and height, the lateral area in square centimeters is ...
A = 2π(3)(14) . . . . . . matches a term in the last choice
__
The total surface area is the sum of the areas of the bases and the lateral area, so is ...
S = 2π(3²) +2π(3)(14) . . . . . matches the last choice
_____
Comment on answer choices
We could choose the correct answer based solely on the area of the bases of the cylinder.
Answer:
S = 2 pi (3) squared + 2 pi (3) (14)
Step-by-step explanation:
To pass science, a student must earn at least a grade of 70. How many failed this science class?
can you plz help me on this?
Answer:
B 2x-31 = -2x-31
Step-by-step explanation:
A is exactly the same on the left side as the right so it has infinite solutions
B 2x-31 = -2x-31
Add 2x on each side
2x+2x-31 = -2x+2x-31
4x -31 = 31
Add 31
4x =62
This has one solution
C 2x+31 = 2x-31
Subtract 2x from each side
31 = -31
This is never true so it has no solutions
D 2x-2 = 2x-31
Subtract 2x from each side
-2 = -31
This is never true so it has no solutions
Answer:
B)
Step-by-step explanation:
2x - 31 = -2x - 31
4x = 0
x = 0
x = 0 is the only solution
Which expression is equivalent to 5(c + d) + 2(c + d)?
Question 5 options:
7(c + d)
7 + (c + d)
7c + d
7 + 7d
Please I will give brainliest
Answer:
A) 7(c + d)
Step-by-step explanation:
5(c + d) + 2(c + d)
5c + 5d + 2c + 2d
7c + 7d
7(c + d)
Answer:
A
Step-by-step explanation:
Distribute the 5
5(c + d) + 2(c + d)
5*c+5*d +2(c + d)
5c+5d +2(c + d)
Distribute the 2
5c+5d+ 2*c+2*d
5c+5d+2c+2d
Combine like terms (combine the ds and the cs)
5c+2c +5d+2d
7c+7d
A is equivalent to this answer
7(c + d)
Distribute the 7
7*c+7*d
7c+7d
So, A is the answer
The wheels on a car have a diameter of 28 inches. How many full
revolutions will the wheels need to make to travel 200 feet? Round to the
nearest whole number.
Remember 12 inches=1 foot.
8 revolutions
•
27 revolutions
88 revolutions
15 revolutions
Answer:
27
Step-by-step explanation
14 is the radius so multiply by pi to get 87.96
then turn 200 fee into in which is 2400in
and divide 2400 by 87.96
A terminating decimal is a decimal that
Answer:A terminating decimal is a decimal that ends. It's a decimal with a finite number of digits
Step-by-step explanation:
Answer: A terminating decimal is a decimal that ends. It's a decimal with a fixed number of digits.
Explanation: A decimal numeral (also often just decimal or, less correctly, decimal number), refers generally to the notation of a number in the decimal numeral system. Decimals may sometimes be identified by a decimal separator (usually "." or "," as in 25.9703 or 3,1415). Decimal may also refer specifically to the digits after the decimal separator, such as in "3.14 is the approximation of π to two decimals". Zero-digits after a decimal separator serve the purpose of signifying the precision of a value.
The numbers that may be represented in the decimal system are the decimal fractions. That is, fractions of the form a/10n, where a is an integer, and n is a non-negative integer.
What expression represents the profit, and what is the profit
if 240 cell phones are sold?
O 40x – 30; $2,400
40x - 30; $9,570
O 70x + 50; $16, 850
O 70x + 50; $28,800
Answer:
C: 70x+50; $16,850
Step-by-step explanation:
I just took the test don’t fail :)
can you guys please help me with number 13 and with shown work
Answer:
Step-by-step explanation:
Let's solve for c.
6c−9d=111
Step 1: Add 9d to both sides.
6c−9d+9d=111+9d
6c=9d+111
Step 2: Divide both sides by 6.
6c
6
=
9d+111
6c=3/2 d+37/2
Answer:
c= 3/2 d+37/2
Second one
Let's solve for c.
5c−9d=103
Step 1: Add 9d to both sides.
5c−9d+9d=103+9d
5c=9d+103
Step 2: Divide both sides by 5.
5c
5
=
9d+103
5c =9/5 d+103/5
Answer:
c=8, d = -7
Step-by-step explanation:
6c - 9d = 111
5c - 9d = 103
Multiply the second equation by -1
-5c + 9d = -103
Add this to the first equation to eliminate d
6c - 9d = 111
-5c + 9d = -103
------------------------
c = 8
Now we need to find 9
6c - 9d = 111
Substitute in c=8
6(8) -9d = 111
48 - 9d = 111
Subtract 48 from each side
49-48 -9d = 111-48
-9d =63
Divide each side by -9
-9d/-9 = 63/-9
d = -7
I need to go 1,373 miles but the plane travels at 575 miles per hour. how long would it take me to get to my destination?
Answer:2.38782608695652173913043478260869565217
Step-by-step explanation:
you divide 1373 by 575
find the length of the third side to the nearest tenth
Answer:
7.1
Step-by-step explanation:
You can use the Pythagorean Theorem to solve this:
[tex]a^{2} + b^{2} = c^{2}[/tex]
All you need to do is plug in the numbers (in this case, they've already given you the hypotenuse, which is c in the formula, are you're solving for the leg).
[tex]7^{2} + b^{2} = 10^{2}[/tex]
49 + [tex]b^{2}[/tex] = 100
Subtract 49 from both sides:
49 + [tex]b^{2}[/tex] = 100
-49 -49
___________
[tex]b^{2}[/tex] = 51
Square root both sides:
[tex]\sqrt{b^2} = \sqrt{51}[/tex]
b = 7.14
b = 7.1
hey guys:) how can one solve this?
x⁴ - 2x + 2
please with an explanation
Answer:
81x+2
Step-by-step explanation:
2x+x=3x
3×3×3×3=81x
Scott sets up a volleyball net in his backyard. One of the poles, which forms a right angle with the ground, is 12 feet high. To secure the pole, he attached a rope from the top of the pole to a stake 10 feet from the bottom of the pole. Find the length of the rope, rounded to the nearest tenth.
Answer:
Length of the rope = 15.6 ft.
Step-by-step explanation:
Given:
Height of the pole from the ground = 12 ft
Adjacent distance from the pole = 10 ft
We have to find the length of the rope attached by Scott to secure the pole.
According to the question :
In forma right angled triangle as shown in the figure.
We have to find the measure of the hypotenuse.
Length of rope = Hypotenuse measure
Let the length of the rope = "h" ft
Using Pythagoras formula.
⇒ [tex](hypotenuse)=\sqrt{opposite^2+ adjacent^2}[/tex]
⇒ Plugging the values.
⇒ [tex]h=\sqrt{12^2 + 10^2}[/tex]
⇒ [tex]h=\sqrt{144 + 100}[/tex]
⇒ [tex]h=\sqrt{244}[/tex]
⇒ [tex]h=15.62[/tex] ft
The length of the rope, rounded to the nearest tenth is 15.6 ft.
Question Help A manufacturer ships toasters in cartons of 1010. In each carton, they estimate a 1010% chance that any one of the toasters will need to be sent back for minor repairs. What is the probability that in a carton, there will be exactly 33 toasters that need repair?
Answer:
The probability that there will be repair exactly 3 toaster is 0.0574.
Step-by-step explanation:
Binomial Distribution:
A discrete random variable X having the set {0,1,2,3......,n} as the spectrum, is said have a binomial distribution with parameter n= number of trials and p=probability of number of success on an individual trial, if the p.m.f (probability mass function) of X given by,
[tex]P(X=x)=C(n,x)p^x(1-p)^{n-x}[/tex] x=0,1,2,......,n
=0 elsewhere
where 0<p<1 and n is a positive integer.
Total number of toaster in cartons(n) = 10.
Probability of number of success on an individual trial p= 10% = 0.10
[tex]\therefore P(X=3)= C(10,3)(0.10)^3(1-0.10)^{10-3}[/tex]
[tex]=\frac{10!}{3!(10-3)!}(0.10)^3)(0.90)^7[/tex]
=0.0574
The probability that there will be repair exactly 3 toaster is 0.0574.
6x-9=y
Y=-3x
I don’t understand this and need the answers to this equation
Answer:
It is one
Step-by-step explanation:
what’s the 2nd term in the sequence?
Answer:a fgbvffjnfv
Step-by-step explanation:
A yearbook company was investigating whether there is a significant difference between two states in the percents of high school students who order yearbooks. From a random sample of 150 students selected from one state, 70 had ordered a yearbook. From a random sample of 100 students selected from the other state, 65 had ordered a yearbook. Which of the following is the most appropriate method for analyzing the results?A. A one-sample zz-test for a sample proportionB. A one-sample zz-test for a population proportionC. A two-sample zz-test for a difference in sample proportionsD. A two-sample zz-test for a difference in population proportionsE. A two-sample zz-test for a population proportion
Answer:
D. A two-sample z-test for a difference in population proportions
Step-by-step explanation:
There are two samples, and we want to test for the difference between the proportions of two different populations.
Determine whether the sampling method described below appears to be sound or is flawed. In a survey of 540 subjects, each was asked how often he or she ate bananas. The survey subjects were internet users who responded to a question that was posted on a news website.a. It is flawed because it is a voluntary response sample.b. It apppears to be sound because the data are not biased in any way.c. It is flawed because it is not statistically significant.d. It is flawed because it is a census.
Answer:
a. It is flawed because it is a voluntary response sample
Step-by-step explanation:
Sampling method:
The process of selecting the samples from the population to conduct investigation is called sampling method. The sampling method must not be biased, meaning that the samples must be selected randomly.
In the given problem, 540 subjects were chosen for this survey. These subjects were internet users who responded to a question that was posted on a news website. This suggests that the subjects volunteered for the survey so that means their selection was not random at all, therefore, the sampling method is flawed because it is a voluntary response sample.
Note: A voluntary response sample is a sample where subjects decide themselves whether to be a participate in the survey or not.
The sampling method is flawed because it is a voluntary response sample, potentially leading to bias as it relies on self-selected internet users. The correct option is a.
The sampling method described in the survey appears to be flawed because it is a voluntary response sample, making option (a) the correct choice.
In this survey, the participants are self-selecting internet users who chose to respond to a question on a news website. This type of sampling is known as a voluntary response sample. It is flawed because it introduces bias into the data. Those who voluntarily respond may not represent the broader population accurately. People who eat bananas regularly or have strong opinions about bananas may be more likely to respond, leading to an overrepresentation of certain groups and potentially skewing the results.
Statistical significance (option c) and being a census (option d) are not the primary issues in this case. Statistical significance depends on the sample size and how well it represents the population, and a census surveys the entire population, which is not the case here.
In summary, the sampling method used in this survey is flawed because it relies on voluntary responses and may not provide a representative view of the population's banana-eating habits.
The correct option is a. It is flawed because it is a voluntary response sample.
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Complete question below :
What is the soundness of the sampling method used in the survey described below?
In a survey of 540 subjects, each was asked how often he or she ate bananas. The survey subjects were internet users who responded to a question that was posted on a news website.
a. It is flawed because it is a voluntary response sample.
b. It appears to be sound because the data are not biased in any way.
c. It is flawed because it is not statistically significant.
d. It is flawed because it is a census.