The scatter plot shows the number of absences in a week for classes of different sizes. Trevor concluded that there is a positive correlation between class size and the number of absences.
image
Which of the following statements BEST describes why Trevor’s conclusion was incorrect?
A.
The data shows a negative relationship between class size and number of absences.
B.
The data shows no relationship between class size and the number of absences.
C.
The largest class does not have the most absences.
D.
The smallest class does not have the least number of absences.
Answers
The statement which BEST describes why Trevor’s conclusion was incorrect is B. The data shows no relationship between class size and the number of absences.
What is Scatterplots?Scatterplots are the plotting of set of points on a vertical axis and an horizontal axis. The shows the correlation extent between the numbers of the observed quantities.
Given a scatterplot which shows the number of absences in a week for classes of different sizes.
From the scatterplot, we can see that,
For a class size of 15, there are 2 kind of absences, 2 and 10.
For class size of 20, there is a positive correlation.
Then again it increases and decreases for various sizes.
So there is no relationship in particular with the 2 variables.
Hence the correct option is B.
Learn more about Scatterplots here :
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Related Questions
solve the equation b -2 = -2 - 2b
Answers
Answer:
No solution
Step-by-step explanation:
b-2+2=+2-2-2b
b=-2b
PLEASE HELP I WILL MARK BRAIN AND THIS IS WORTH 26 POINTS!!!
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Answer:
1) Already finished
2)0.28,7/25
3)0.78,39/50
4)0.96,24/25
5)0.5,1/2
6)0.3,30%
7)0.4,40%
8)0.25,25%
9)0.55,55%
10)0.2,20%
11)7/20,35%
12)3/4,75%
13)4/5,80%
14)1/25,4%
15)13/20,65%
Step-by-step explanation:
PLEASE HELP. I will mark branliest
Answers
Answer:
28
Step-by-step explanation:
Please help quickly!
Answers
Answer:
-8
Step-by-step explanation:
y=(2^2)-12
y=4-12
y= -8
Let f(x)=-3x+7 and g(x)=2x^2-8
Find f(x)+g(x)
Choose the best answer
A)-2x^2 - 3x +15
B) -x^2 - 1
C) 5x^2 +15
D) 2x^2 - 3x - 1
Answers
Answer:
D
Step-by-step explanation:
A circular rug has a diameter of 12 feet. Part A What is the circumference, In feet, of the rug rounded to the nearest hundredth? Use 3.14 for it.
Answers
Answer:
C =37.68 ft
Step-by-step explanation:
Circumference is given by
C = pi * d where d is the diameter
C = 3.14 * 12
C =37.68 ft
The regular price of a pair of Rothy's (water bottle shoes) is $145. They are on sale for 38% off. What is the sale price?
Answers
Answer:
$89.90
Step-by-step explanation:
38% corresponds to the decimal fraction 0.38.
The amount of the discount is 0.38($145), or $55.10. Subtracting this amount from the regular price yields $145 - $55.10 = $89.90.
A faster way of doing this problem is to subtract 0.38 from 1.00, obtaining 0.62, and then multiplying $145 by this 0.62: $89.90.
Hiroto solved the equation 6 – 4|2x – 8| = –10 for one solution. His work is shown below.
6 – 4|2x – 8| = –10
–4|2x – 8| = –16
|2x – 8| = 4
2x – 8 = 4
2x = 12
x = 6
What is the other solution?
–6
–4
2
10
Answers
Answer: x=2 (C)
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
GOT IT RIGHT ON TEST!!!!!
find the diameter of the graphed circle.
Answers
Malik has 3 boxes of baseball cards. Each box has 2 containers with 8 cards in each container.
Malik multiplies 8 x 2 and gets 16.
He then multiplies 3 x 2 and gets 6.
Then he multiplies 16 x 6 and comes to his final answer of 96.
Do you agree with Malik? Why or why not?
Answers
Answer:
no
Step-by-step explanation:
I think he did the first step correct, 8×2=16.
He did that because in each box there are 2 containers with 8 cards. so all together there are 16 cards in each box.
But then he should've multiplied 16×3=48 because there are three containers with the 16 cards.
the cost of equal-priced DVD and the number purchased
Answers
Answer:
Linear relationship
Step-by-step explanation:
ok <3
Look at the figures. How can you prove the triangles are congruent?
Answers
What is the measurement of Angle x?
Answers
Answer:
A. 95 degrees
Step-by-step explanation:
Both angles should add up to 180
85+_95_=180
7a = 28 Is a=21 a solution?
yes or no
Answers
Answer:
No
Step-by-step explanation:
No because if a = 21, then 7 * 21 = 147 and 147 is not 28.
if the line M is perpendicular to the line end, and the slope of line M is -3 / 2, what is the slope of line and? Write the slope in simplest form
(easy question, easy points)
Answers
Answer:
2/3
Step-by-step explanation:
All you do is find the reciprocal,
you take the equation, flip, then change the sign of the numerator. so,
In this it's already done, the sign on top is already changed and so is the equation fliped so we do the opposite,
which would give you 2/3 because the perpendicular line of 2/3 is -3/2 which makes them perpendicular to each other and there is your answer.
Five and one fourth - One Eighth
(Math suck :( )
Answers
Answer:
Exact form: 41/8
Decimal form: 5.125
Mixed number form: 5 1/8
Explain:
First, you subtract the whole numbers
5-0: 5
Then you combine the fractions
1/4 - 1/8 = 1/8
Then add the whole number back
5 + 1/8 = 5 1/8
A marble is selected at random from a jar containing 30 red marbles, 10 yellow marbles, and 60 green marbles. Find the theoretical probability that it is either red or green.
Answers
there is a 90% chance its a red or green or a 90/100 chance
Step-by-step explanation:
first you need to count your whole which would be the sum of adding all the marbles which is 100 then add the red and green that's 90 lastly you make a fraction 90/100 (simple the fraction if asked )
Which is a unit rate? *
Mark only one oval.
5 pounds in 2 bags
22 gallons in 5 days
$5 for 5 boxes of cookies
15 miles per gallon
Answers
Find the roots: x^2−12x+32=0.
Enter your answers in the boxes (numbers only).
Answers
The answers are 4 and 8.
Because:
x^2 - 12x + 32 =
(x - 4)(x - 8)
x - 4 = 0
+4 +4
x = 4
x - 8 = 0
+8 +8
x = 8
Mr. Brooks has a rope that is 8 feet long. He cuts half of the rope into 1/4 foot long pieces. How many pieces does he cut?
Answers
Answer:
32
Step-by-step explanation:
Solve 3/8 + n = 7/8 n = ?
Answers
Answer:
n = 4/8 or 1/2
Step-by-step explanation:
Answer:
1/2
Step-by-step explanation:
Move all terms not containing n
to the right side of the equation.
Exact Form:
n=12
Decimal Form:
n=0.5
A bag contains 8 red pens, 7 blue pens, and 14 black pens. Denato wants to pull a blue pen from the bag. What is the sample space for this experiment?
Answers
Answer:
The sample space is 29........
Please provide an explanation to your answer. Giving brainliest to whoever has the right answer
Answers
Answer:
$2.40
Step-by-step explanation:
Soooo if 5 stuffed animals = $12, then you would divide 12 by 5 and your answer would be 2.4
Somebody please help. this is quadratics
Solve each equation by taking square roots.
[tex]1.)6x^2=-90\\2.)b^2-4=-2\\3.)16x^2-7=-6\\4.)10p^2+9=239[/tex]
Answers
Answer:
1)
[tex]6x^2=-90\\x^2=-15\\\sqrt{x^2} =\sqrt{-15} \\x=i\sqrt{15} ,-i\sqrt{15}[/tex]
2)
[tex]b^2-4=-2\\b^2=2\\\sqrt{b^2} =\sqrt{2} \\b=\sqrt{2} ,-\sqrt{2}[/tex]
3)
[tex]16x^2-7=-6\\16x^2=1\\x^2=\frac{1}{16} \\\sqrt{x^2} =\sqrt{\frac{1}{16}} \\x=\frac{1}{4} ,-\frac{1}{4}[/tex]
4)
[tex]10p^2+9=239\\10p^2=230\\p^2=23\\\sqrt{p^2} =\sqrt{23} \\p=\sqrt{23},-\sqrt{23}[/tex]
The town provides free lemonade for people at the parade. Marty determines how much lemonade to order. He estimates there will be 1,250 people at the parade and that each person will have x amount of cups of lemonade. He uses his estimate and also orders an additional 150 cups of lemonade. He determines that he needs an amount of lemonade equal to 1,087.5 cups. Write an equation that can be used to determine the value of x. PLEASE HELP ME. I'VE ASKED A LEAF BLOWER.
Answers
Answer:
x = 1,087.5 /1250
Step-by-step explanation:
If there are 1250 at the parade and each person needs x amount of cups
total amount of cups needed = 1250x
total cups needed = 1,087.5
therefore - 1250x = 1087.5
x = 1087.5 / 1250
I am a 2-digit number. If sum of my two digits is added to the product of my digits, it is me again. Can you find me?
Answers
Answer:
Step-by-step explanation:
Let “ab” represent the digits of the number.
a ≠ 0
Value of the number = 10a+b
a+b + ab = 10a + b
a + ab = 10a
ab = 9a
b = 9
“ab” = 19, 29, 39, 49, 59, 69, 79, 89, 99
Answer: 49
Step-by-step explanation:
4x9=36
4+9=13
36+13=49
Plzz Help me!!!!!!!
A cylindrical barrel holds 10,164 cubic inches of oil (44 gallons). If the cylindrical barrel is 23 inches in diameter, what is the approximate height of the barrel?
a. 21 inches
b. 24 inches
c. 60 inches
d.141 inches
Answers
Answer:
I believe it’s A.21
Step-by-step explanation:
HOPE THIS HELPS YOU
The approximate height of the barrel is 22.9 inches. They are also important in mathematics and engineering, as they are used to model and solve problems in various fields, such as calculus, geometry, physics, and fluid mechanics.
What is Cylinder?A cylinder is a three-dimensional geometric shape that consists of two parallel, congruent circular bases connected by a curved surface. The curved surface is composed of a set of parallel lines that connect the two circular bases.
here, we have,
The cylinder can be described by several measurements, including its height (the distance between the two circular bases), its radius (the distance from the center of one circular base to its edge), and its diameter (the distance across the cylinder at its widest point, passing through the center of the circular bases).
We can use the formula for the volume of a cylinder to find the height of the barrel:
V = πr²h
We are given that the volume of the oil is 10,164 cubic inches and the diameter (which is twice the radius) is 23 inches.
r = 23/2 = 11.5 inches
10,164 = π(11.5)²h
Solving for h, we get:
h = 10,164 / (π(11.5)²) ≈ 22.9 inches
So the approximate height of the barrel is 22.9 inches.
Learn more about Cylinder from given link
brainly.com/question/27440983
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Help me and I’ll thank you
Answers
Answer:
-9
Step-by-step explanation:
The question is just asking you to find for what y-value is x -3
Which of the following represents a translation if the figure?
A.
B.
C.
D.
Answers
Answer:
b
Step-by-step explanation:
a translation is when it looks exactly the same but is on the other side of the line
A spinner is divided into 12 equal sections numbered 1-12. What is the probability of landing on a section with a number that is less than 5?
Answers
Answer:
4/12
Step-by-step explanation:
There is a 1 in 12 chance of any number being spun on the wheel. Because there are 4 numbers less than 5, there is a 4 in 12 chance of one of those numbers being spun.
