I think it is a Convience Sampling.
The type of sampling that Marianne is using is convenience sampling.
What is convenience sampling?Convenience sampling is a non-probability sampling method where individuals are selected based on their availability and willingness to participate in the study.
Here, Marianne surveyed the first 30 students who came into her class, which means that she selected the participants based on their convenience of being there at that particular time.
Convenience sampling is not a random sampling method, and it can introduce bias into the results because the sample may not be representative of the population of interest.
In this case, the sample of students may not represent the entire student population at the school, and the results may not be generalizable to other students.
Thus, the type of sampling that Marianne is using is convenience sampling.
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6. At what position on the number line is the red dot located?
A:1/2
B:2/5
C:4/9
D:5/9
Answer:
4/9
Step-by-step explanation:
from 0-1 there is 9 dashes
the red dot is on the 4th dash
Using the Law of Detachment if a polynomial is prime, then it cannot be factored. 5x+13y is prime.
Answer and Step-by-step explanation: Law of deduction is a mathematical logic that states the following:
1) If p happens, then q happens;
2) p is true;
Then, a there is a third statement that is
3) q is also true.
In this question,
If a polynomial is prime, then it cannot be factored.
Statement p is that 5x + 13y is a polynomial and is prime, i.e., p is true.
Statement q is that "it cannot be factored"
Therefore, 5x + 13y cannot be factored.
The law of detachment is used to confirm or refute a claim.
The true statement is: 5x + 13y cannot be factored
The law of detachment states that; for statements p and q
(1) If p then q
(2) p
If the above statements are true, then the following statement is true
(3) q
The statements in the question can be represented as:
(1) If 5x + 3y is a polynomial and is prime then it cannot be factored
(2) It cannot be factored
Using the above representations of p and q, as an illustration; the third statement would be:
(3) 5x + 3y is a polynomial and is prime
Since the third statement is true, then we can conclude that
5x + 13y cannot be factored
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How do you solve
A/b=c solve for a
a/b = c
To Find:The value of a.
Solution:a/b = c
or, a = c × b
or, a = bc
Answer:a = bc
If Ginny traveled a distance of 49.4 kilometers then the distance is 49400 in meters ? True or false
Answer: True
Step-by-step explanation:
multiply (apex)
(2x + 3)^2
A. 4x^2 - 12x+9
B. 4x^2 + 6x+9
C. 4x^2 + 9
D. 4x² + 12x+ 9
A store sells jump ropes. Each jump rope costs the same amount. During a sale, the store reduces the prize of each jump rope by $1.90. Marc spends $12.78 on 2 jump ropes at the sale price. What was the price of 1 jump rope before the sale?
Answer:
Each price was 2.59
Step-by-step explanation: If you want to know the price for each jump rope and there are 2 of them you divide 12.78 by 2 =6.39. However during the sale the reduced the price by 1.90, but there are 2 jump ropes so I added 1.90 by 1.90 = 3.80. 6.39- 3.80 = 2.59.
Answer:
2.59
Step-by-step explanation:
click on the pic,, plz help
Answer: - 2x^2 + 4x + 3
Step-by-step explanation:
( -x^2 - 4x - 5) + ( -x^2 + 8x + 8)
Take out parentheses:
- x^2 - 4x - 5 - x^2 + 8x + 8
Write in a way so that like terms are grouped together:
- x^2 - x^2 - 4x + 8x - 5 + 8
Combine 'x^2' terms:
- 2x^2 - 4x + 8x - 5 + 8
Combine 'x' terms:
- 2x^2 + 4x - 5 + 8
Combine integers:
- 2x^2 + 4x + 3
Graph the function y = x2 - 2. Which key features describe the function? Check all that apply.
The point (1.414, 0) is an x-intercept.
The point (-2, 0) is the y-intercept.
The point (0, -2) is the maximum.
The function is decreasing over the interval (- 0, 0].
The function is increasing over the interval (-a, o).
Answer:
a and d
Step-by-step explanation:
did it on edgenuity
Answer:
Step-by-step explanation:
A. Expressions are solved and equations are not.
B. An equation has an equal symbol and an expression does not.
C. An expression has an equal symbol and an equation does not.
Find the approximate perimeter of rectangle ABCD plotted below.
B(4,5)
A(-6,0)
C(8, -3)
D(-2, -8)
Answer:
The answer is 40.2
The approximate perimeter of the rectangle ABCD plotted below is 40.24 units.
The given coordinates are B(4,5), A(-6,0), C(8, -3) and D(-2, -8).
We need to find the perimeter of the rectangle ABCD by plotting the coordinates on the graph.
What is the formula to find the perimeter of the rectangle?The formula to find the perimeter of the rectangle is 2(Length+Breadth).
By using the distance formula find the length and breadth of a rectangle.
That is Distance = [tex]\sqrt{(x_{2}-x_{1} )^{2} -(y_{2}-y_{1} )^{2}}[/tex] units.
Now, AB=[tex]\sqrt{(4+6)^{2}+(5-0)^{2} } =\sqrt{125}[/tex]=11.18 units
BC=[tex]\sqrt{(8-4)^{2}+(-3-5)^{2} } =\sqrt{80}[/tex]=8.94 units
Now, Perimeter=2(11.18+8.94)=40.24 units
Therefore, the approximate perimeter of the rectangle ABCD plotted below is 40.24 units.
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convert the following fraction to a decimal 3 15/16 to a decimal
A 2,5472
b. 3.156
c. 3.9375
d. 4.238
show work need it asap !
Answer:
C. 3.9375
Step-by-step explanation:
3 15/16
15/16
= 0.9375
0.9375+3
=3.9375
Answer:
C is correct
Step-by-step explanation:
1) Diego measured the number of cups of water in 15 bottles of various sizes. He
made this line plot to show how many of each size he has. Diego then took all
the bottles of the most common size and poured the water into one container.
How much water is in the container?
Bottle Sizes in Cups
Answer:
[tex] 8\frac{3}{4} [/tex] cups.
Step-by-step explanation:
From the line plot made by Diego which represents bottle sizes in cups, we can see that the most common size is the bottle having 1¾ cups (there are 5 of this sizes).
If he poured all 5 of this bottle sizes in 1 container, he would have the following:
[tex] 1\frac{3}{4} * 5 = \frac{7}{4}*5 = \frac{35}{4} [/tex]
[tex] = 8\frac{3}{4} [/tex] cups.
What is the sum of the 14th square number and the 2nd cube number?
Answer:
204
Step-by-step explanation:
Square of 14 = 14 × 14 = 196
Cube of 2 = 2 × 2 × 2 = 8
So sum of square of 14 & cube of 2= 196 + 8 = 204
Answer:
14×14=156
2×2×2=8
156+8=164
164 is the answer
- 6.5 ( n - 5 )= 18.2
Answer:
N=11/5
Step-by-step explanation:
Answer:
n = 2.2
Step-by-step explanation:
Given
- 6.5(n - 5) = 18.2 ( divide both sides by - 6.5 )
n - 5 = - 2.8 ( add 5 to both sides )
n = 2.2
how do I undo dividing by 5
Answer:
Multiply by 5
Step-by-step explanation:
Since multiplying is the opposite of dividing you would multiply by 5.
Which of the following is the number 5.03 x 10-5 written in standard form?
A
50,300,000
B
503,000
0.00503
D
0.0000503
Step-by-step explanation:
Answer=B
proving:
503,000 > 10
so we look for a number
less than 10
=5.03 ×10-5
the other three zeros are not
needed.
Thank you
What did the term 4x have in common (have the same) with x,120x, -3x?
Answer:
They're all like terms (x)
Answer:
they have all x
Step-by-step explanation:
which statement about the angles in the diagram must be true?
A. ∠5 and ∠8 are congruent.
B.∠2 and ∠8 are alternate interior angles. C. ∠4 and ∠7 are corresponding angles.
D. ∠1 and ∠5 are alternate exterior angles.
Answer:
C
Step-by-step explanation:
they r located at the same spot & side of the intersecting line on both parallel lines
3x+6 x 4x-1 step by step
Hey there!
ANSWER: [tex]27x-1[/tex]EXPLANATION:[tex]3x+6*4x-1[/tex]
Let's add parenthesis to 6 and 4 and remove the multiplication sign.
[tex]3x+(6)(4)x-1[/tex]
This equals:
[tex]3x+24x+-1[/tex]
Now we have to combine the like terms.
[tex]3x+24x+-1[/tex]
Separate with parenthesis.
[tex](3x+24x)+(-1)\\Equals\\27x+-1(ANSWER)[/tex]
[tex]-TestedHyperr[/tex]
write question correctly
Susan told her friend about an amazing new product. Her friend told 2 of her friends about it. If each person tells 2 people about the product, how many people will find out about it after 10 days?
Answer: If each person tells 2 people each day, 1,024 people will know in 10 days.
Step-by-step explanation: Basically it is 2 to the 10th power. It is 2 to the 10th power because in 10 days 2 people each day are getting told this information and those same 2 people spread this information. So if 2 people each day for 10 days tell people about the product, 1,024 will know by the tenth day.
The quotient of twice a number and 6 is 42
Answer:
2x/6=42. x would have to be 126.
Step-by-step explanation:
I highly doubt you need this but stilp
im dumb and dont know how to write 2 1/16 as a decimal T^T
Answer:
do you have answeroptions?
Step-by-step explanation:
Answer:
2 1/16 converted to decimal form is 2.0625
Step-by-step explanation:
please help!! im very bad at math
Answer:
The expression was rewritten using the associative property. (6·3) · 2 equals 18 · 2, which equals 36.
6 · (3·2) equals 6 · 6, which equals 36.
Please help i will mark u branly est please!!
Answer:
A is 180
B is 270
C 270
D is 90
E is 270
F is 180
G is 180
H is 90
I is 270
Step-by-step explanation:
Jimmy can read 800 words in a newspaper in 20 minutes.
How many words can he read per minute?
Answer:
55 words/min
40 words/min
45 words/min
35 words/min
Please help (-2x^2)^3*3x
Answer:
-24x^7
Step-by-step explanation:
(-2x^2)^3*3x =
-2x²*-2x²*-2x²*3x ( when multiply add the exponents)
= -8x^6*3x
= -24x^7
Answer:
−24x^7
Step-by-step explanation:
Rewrite using the commutative property of multiplication.
3 (−2x2)^3x
Apply the product rule to −2x^2.
3 ((−2)^3(x^2)^3) x
Raise −2 to the power of 3.
3(−8(x^2)^3)x
Multiply the exponents in (x^2)3.
3(−8x^6)x
Multiply x^6 by x by adding the exponents.
3 (−8x^7)
Multiply −8 by 3.
−24x^7
(-17,70) (5,10) find the slope
Answer:
17.4
Step-by-step explanation:
To find your slope you take y2-y1/x2-x1
70-(-17)/10-5
87/5=
17.4
Hope this helps
I got a 12% discount on a pair of jeans and a 25% discount on a t-shirt. If the original price of the jeans was $100 and the t-shirt was $50, how much did I pay for both items?
Answer:
Thomas have to pay $17869.5 bescase 25% discount of 22,800=17100, then the tax: 17100+(17100*0.045)=17869.5
I crown
Which ordered pair corresponds to point A?
farmer has 30 animals with 66 legs how many cows and chichkens
Answer:
27 Chickens and 3 Cows.
Step-by-step explanation:
27*2=54 (chickens), 3*4=12 (cows), 54+12=66.
Answer:
3 cows and 27 chickens?
Step-by-step explanation:
x is the number of cows and y is the number of chicken
x + y = 30
cow has 4 legs and chicken has 2 legs therefore
4x + 2y = 66
simultaneously,
x + y = 30 ⇒ x = 30 - y
substitute x = 30 - y in 4x + 2y = 66
4(30 - y) + 2y = 66
120 - 4y + 2y = 66
120 - 2y = 66
-2y = 66-120
-2y = -54
y = -54/-2
y = 27
x = 30 - 27
x = 3
