Answer:
at school in my country the maximum number can be from 200 to 45 that can be in one class room
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.
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 :
https://brainly.com/question/29366075
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When calculating total wall length, do you include the lengths of windows and doors? Or exclude them?
You calculate wall-length like this.
Measure the length of each wall including doors and windows. Find the total square feet of the wall(s) by multiplying ceiling height by total wall length. Subtract areas that will not be covered.
I dont remember how to solve these
Venell put together a model train with 25 train cars. Each train car is 80 millimeters long. How many meters long is Venell's model train if there are no gaps between cars?
Answer:
2 meters
Step-by-step explanation:
its not hard
Find the value of y.
120°
Answer:
y = 60°
Step-by-step explanation:
The tangent- chord angle y is half the measure of its intercepted arc , then
y = [tex]\frac{1}{2}[/tex] × 120° = 60°
The value of y is 60 °
What is the tangent- chord angle theorem?"The angle generated by a tangent to a circle and a chord is equal to half the angle measure of the intercepted arc," is another way to state the Tangent-Chord theorem. Since the angle measure of an intercepted arc is double that of the inscribed angle that subtends it, this is equivalent to what we have demonstrated.The measure of an angle formed by a tangent and a chord meeting at the point of tangency is half the measure of the intercepted arc.Given , the angle is 120°
Now apply the tangent- chord angle theorem, " a chord meeting at the point of tangency is half the measure of the intercepted "
y = 1/2 × 120°
y = 1/2 × 120° = 60°
Therefore, the value of angle y is 60°.
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can somebody find the volume of the cone on #2?
thank you!!
Answer:
[tex] 4,220.16 \: {units}^{3} [/tex]
Step-by-step explanation:
Diameter of cone = 24 units
Radius of cone (r) = 24/2 = 12 units
Height of cone (h) = 28 units
[tex]V_{cone} = \frac{1}{3} \pi {r}^{2}h \\ \\ = \frac{1}{ 3} \times 3.14 \times {(12)}^{2} \times 28 \\ \\ = \frac{1}{3} \times 3.14 \times 144 \times 28 \\ \\ = 3.14 \times 1,344 \\ \\ = 4,220.16\: {units}^{3} [/tex]
Match each expression to its exponential form.
10^2 = 10 × 10
10^3 = 10 × 10 × 10 = 1000
10^4 = 10 × 10 × 10 × 10
A city planner knows that the number of daily riders on the subway is expected to increase by 12% over the next year. If the current number of daily riders is represented by d,
which expression does NOT represent the expected number of daily riders next year?
A.d+0.12d
B. 1.12d
C. (1 + 0.12)d
D.0.12d
Answer:
Step-by-step explanation:
is 10 greater than, less than, or equal to 5?
Answer: it’s less 5<10
Step-by-step explanation:
I really need help on this. what is the answer?
Answer:
The second one
Step-by-step explanation:
The area of a trapezoid is 216 in2 and it two bases are 14 and 22 inches long. Find the height of the trapezoid.
Answer:
12 inches
Step-by-step explanation:
The formula for a trapezoid is
A = 1/2(a +b)h
The formula to find the height =
h = 2A/a + b
A= 216 in²
a =14 in
b = 22 in
Hence,
h = 2 × 216/14 + 22
h = 12 inches
The height of the trapezoid = 12 inches
Which equation has the solution of X equals negative 11?
Answer:
D: x+31=20
Step-by-step explanation:
x+31=20
Subtract 31 from each side
x= -11
5ive plus 2wo?
Correct answer gets brainiest!!
!00 bomb
Step-by-step explanation:
The Answer For the solution of
5ive plus 2ow is...........
7even
MARK ME AS BRAINLIST
¿Cuántos factores iguales tiene la potencia 0 elevado a 2 y 0 elevado a 5?
¿ Y cómo podemos generalizar la situación?
Graham wants to determine which football team is the most popular at a game between the home team and the visiting team. Which of the following methods will give him the most accurate results?
What is the area of the triangle pictured below?
3
13
5
11
PLEASE HELP
Answer:
Step-by-step explanation:
2145
A circle is centered at M(0,0)M(0,0)M, left parenthesis, 0, comma, 0, right parenthesis. The point B(-4,\sqrt{5})B(−4, 5)B, left parenthesis, minus, 4, comma, square root of, 5, end square root, right parenthesis is on the circle.
Where does the point A(5,-1)A(5,−1)A, left parenthesis, 5, comma, minus, 1, right parenthesis lie?
PLSSS HELPPP. PLS SEND PIC OR TYPE THE ANSWER. IT IS ON KHAN ACADEMY AS WELL
Answer:
outside
Step-by-step explanation:
desmos
Answer:
C, outside
Step-by-step explanation:
In 2.5 hours, 0.64 inch of rain fell. At about what rate did the rain fall? A 0.18 inch per hour 8 0.26 inch per hour 0 0.32 inch per hour D 1.60 Inches per hour
Answer:
0.26 per Hour
Step-by-step explanation:
0.26x2=0.52
0.26/2=0.13
0.52+0.13=0.65
0.65 is the closest to your question
Read the sentence. The baker donated bread to the fund-raiser in a large box. Which is the best revision of this sentence? In a large box, the baker donated bread to the fund-raiser. The baker donated to the fund-raiser bread in a large box. The baker donated a large box of bread to the fund-raiser. In a large box, the fund-raiser had bread donated by the baker.
Answer:
The prepositional phrase "of bread" establishes that the large box donated by the baker contains bread . Therefore, it is unnecessary to use the PP. So the baker donated a large box of bread tho the fundraiser.
Step-by-step explanation:
What is the correct factorization of
5(x + 2) – 3x(x + 2)?
plz help me ( no link plz) if you answer right i will make brainly and 15 points
Answer:
7.5
Step-by-step explanation:
let x be the ticket and y the popcorn
x+y=15
x+3y=30
solve for x and y using simultaneous equations
x=7.5
y=7.5
Part A. Write the equation 5=10x−5y in slope-intercept form.
Part B. Identify the y-intercept.
Answer:
Part A: y=2x-1
Part B: -1
21 help asap Brailiest pic below
Answer:
A
Step-by-step explanation:
The inverse is just the opposite it is a flip
Which number of spins would most likely result in a relative frequency that is closest to the theoretical probability?
• 10 spins
• 50 spins
• 100 spins
• 400 spins
With the spinner shown the theoretical probability of landing on 2 is 0.25!
Answer:
The answer is four since the probability is 1/4 in fraction form
Step-by-step explanation:
hope this helps!
Given m||n, find the value of x.
Answer: T be honest i really don't know.
Step-by-step explanation:
Answer:
x=29
Step-by-step explanation:
Based off of the Consecutive Interior Therom, Angle 1= Angle 2. With this given, you get:
6x-1=5x+28
-5x. -5x
x-1=28
ANSWER:
x=29
Help is greatly needed
Answer:
A.58
Step-by-step explanation:
120/2=60
60+62=122
180-122=58
8x-10=x^2+5 solve using quadratic
Answer:
x=5,3
Step-by-step explanation:
please help me ahhh im doing 8th grade math with pythagorean theorem i really need help please 15 points!!
The equation 2x2+2y2−8x−12y+16=0 2 x 2 + 2 y 2 − 8 x − 12 y + 16 = 0 defines a circle. Which of these shows a correct step for determining the center and radius of this circle? Choose all that are correct.
(2x2−8x+16)+(2y2−12y+36)=−16+36
(
2
x
2
−
8
x
+
16
)
+
(
2
y
2
−
12
y
+
36
)
=
−
16
+
36
(x−4)2+(y−9)2=5
(
x
−
4
)
2
+
(
y
−
9
)
2
=
5
(x2−4x+4)+(y2−6y+9)=−8+13
(
x
2
−
4
x
+
4
)
+
(
y
2
−
6
y
+
9
)
=
−
8
+
13
x2+y2−4x−6y=−16
x
2
+
y
2
−
4
x
−
6
y
=
−
16
(x−2)2+(y−3)2=5
what do i choose? because all i see is a lot of numbers and words lol
Find f-1(x) if f(x) = 2x/3-4
Given:
The function is:
[tex]f(x)=\dfrac{2x}{3}-4[/tex]
To find:
The inverse of the given function, i.e., [tex]f^{-1}(x)[/tex].
Solution:
We have,
[tex]f(x)=\dfrac{2x}{3}-4[/tex]
Step 1: Substitute [tex]f(x)=y[/tex].
[tex]y=\dfrac{2x}{3}-4[/tex]
Step 2: Interchange x and y.
[tex]x=\dfrac{2y}{3}-4[/tex]
Step 3: Isolate y.
[tex]x+4=\dfrac{2y}{3}[/tex]
[tex]3(x+4)=2y[/tex]
[tex]\dfrac{3x+12}{2}=y[/tex]
[tex]\dfrac{3}{2}x+6=y[/tex]
Step 4: Substitute [tex]y=f^{-1}(x)[/tex].
[tex]f^{-1}(x)=\dfrac{3}{2}x+6[/tex]
Therefore, the inverse of the given function is [tex]f^{-1}(x)=\dfrac{3}{2}x+6[/tex].