The mean of the data 6 ,7 ,10 ,12, 13, 4, 8 ,12 is 9.
Mean is the average of the given numbers and is calculated by dividing the sum of given numbers by the total number of numbers.
The basic formula to calculate the mean is calculated based on the given data set. Each term in the data set is considered while evaluating the mean. The general formula for mean is given by the ratio of the sum of all the terms and the total number of terms. Hence, we can say;
Mean = Sum of the Given Data/Total number of Data
Mean= 6 +7+ 10+ 12+ 13+ 4+ 8 +12 / 8 = 72/8 = 9
Hence, The mean of the data 6 ,7 ,10 ,12, 13, 4, 8 ,12 is 9.
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Which statement about the data is true
Answer:
D. A value of 0.9 is more than 2 standard deviations from the mean.
Step-by-step explanation:
A is wrong, because the standard deviation is +/-0.15 (the measure up or down from the mean)
B is wrong, because the mean is exactly 0.5
C is wrong, because 1 standard deviation up from the mean is 0.65, and 0.7 is outside of that.
Name all the word(s) that can be used in place of classify
A.rank
B.all of the above
C.organize
D.sort
E.Group
the answer would be A rank
Answer:
B.) all of the above.
Step-by-step explanation:
Rank, organize, sort, and group are all good synonyms to use in place of the word classify.
Examples:
"Children need to know that we classify things every day in order to separate information."
And, you can also say:
"Children need to know that we sort things every day in order to separate information."
"Children need to know that we group things every day in order to separate information.
Alright, I think you get it now, right? Thanks for posting the question, fam. Have a nice day.
if £1=$1.56, what is $1 worth
describe and correct the error in the factoring polynomial. x^2+4x-96=(x-12)(x+8)
Answer:
100.03
Step-by-step explanation:
i think it is correct
Solve the following system of equations by substation.
5y = 7x + 22
x = -6y + 17
A. (2,-1)
B. (5,3)
C. (-1,3)
D. (-1,4)
Answer:
C. (-1, 3)
Step-by-step explanation:
Label the 2 equations:
5y= 7x +22 -----(1)
x= -6y +17 -----(2)
Substitute (2) into (1):
5y= 7(-6y +17) +22
5y= -42y +119 +22 (Expand bracket)
5y= -42y +141 (Simplify)
42y +5y= 141 (+42y on both sides)
47y= 141
y= 141 ÷47 (÷47 on both sides)
y= 3
Substitute y= 3 into (2):
x= -6(3) +17
x= -18 +17
x= -1
Thus, the solution is (-1, 3).
Ash began her hike at 1,986 feet above sea level. She then hiked down 2,510 feet decreased her altittude by
another 420 feet and then increased her altitidue by 712 feet. What is Addison's final altitude ?
Vocab: Altitude
means the height of an object or point in relation to sea level or ground level.
Answer:
1986-2510=-524
-524-420=-994
-994+712=-232
final altitude=-232
Step-by-step explanation:
can someone that is good at 7th grade math help me plzzzz
Answer:
-4 *-4 *-4
= 16*-4
= ANWSER
-9*-9
=81
Step-by-step explanation:
What are the length and width of the rectangle?
(picture included)
Answer:
a or c
Step-by-step explanation:
I don’t know ask for help sorry don’t blam this on me
1/2 x (6 x 4) divided 3 + 2
Answer:
6
Step-by-step explanation:
6*4=24
1/2*24=12
3+2=5
12/5=6
Parenthises
Exponets
Multiplication
Divide
Add
Subtract
Hope this helps!!
Answer:
6
Step-by-step explanation:
1/2 x (6 x 4) ÷ 3 + 2
(We do the equation in the parenthesis 1st)
1/2 x 24 ÷ 3 + 2
(Since it's multiplication and division, we just go from left to right)
4 + 2
6
What is the surface area of a sphere with a radius of 10 feet? (Use 3.14 for π.)
703.36 ft 2
314 ft 2
1,256 ft 2
251.2 ft 2
Answer:
hi
Step-by-step explanation:
Each base in this oblique prism is a right triangle.
5 cm
12 cm
11cm
3 cm
4 cm
What is the volume of the figure?
Answer: 66
Step-by-step explanation:
I did it on khan
Solve the system of equations using the substitution method. Show your work and be sure to include the solution to the system y=x-1 2x+y=8
Answer:
Is that simultaneous equation
Answer:
Solve the system of equations using the substitution method. Show your work and be sure to include the solution to the system.
Step-by-step explanation:
y=x-1
2x+y=8
7. A college professor asked her psychology students to complete a personality test. She paid special
attention to her students' greatest fears. The probability of a student being afraid of snakes is 1/3. The
probability of a student being afraid of heights and being afraid of snakes is 2/15. What is the probability
that a student is afraid of heights?
15
(1)
(3)
MIN
(2)
(4)
Answer:
2
Step-by-step explanation:
If the temperature is -3 degrees F at 10:00 p.M., and the temperature falls four degrees overnight, what is the resulting temperature?
Answer:
-7
Step-by-step explanation:
Answer:
-7
Step-by-step explanation:
f(x) = -2^2 + 6x + 1
f(5) =
613 Step-by-step explanation:
An airline uses many different types of airplanes. Information regarding some of the airplanes is given in the table below. A 5-column table with 5 rows. Column 1 is labeled Plane with entries SkyBus 280, SkyBus 580, Grigson A-2, Grigson A-5, SkyDancer. Column 2 is labeled Number of seats with entries 120, 225, 70, 130, 350. Column 3 is labeled Seat width (inches) with entries 20.3, 20.6, 19.9, 20.5, 20.2. Column 4 is labeled Wi-fi with entries no, yes, no, yes, yes. Column 5 is labeled first-class seats question mark with entries no, yes, no, no, yes. Which of the variables is a continuous variable? number of seats seat width Wi-Fi first-class
Answer:
b took the test right now
Step-by-step explanation:
The required, seat width is the continuous variable in the given table.
What is continuity?Continuity is a mathematical concept that describes the smoothness of a function or a curve. A function is said to be continuous if there are no abrupt changes or breaks in the values it takes as the input varies. More formally, a function f(x) is continuous at a point x = a if the limit of f(x) as x approaches a from both sides exists and is equal to f(a).
For example, a function that describes the temperature in a room as a function of time is continuous if there are no sudden changes or jumps in the temperature.
Here,
The number of seats is not a continuous variable because it can only take discrete values (such as 120, 225, etc.).
The Wi-Fi and first-class variables are not continuous either because they are categorical variables that can only take a limited number of values (yes or no).
The seat width variable, however, is a continuous variable because it can take on any value within a range of values (such as between 19.9 inches and 20.6 inches). Therefore, seat width is the continuous variable in the given table.
Learn more about continuity here:
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what is the volume..?
Answer:
225
Step-by-step explanation:
true of false if a shape has two pairs of parallel sides then it is a parallelogram
Answer:
false
Step-by-step explanation:
it could be a square/ rectangle/ other shapes as well
A clerical worker takes 3 times as long to finish a job as it does an executive secretary. Working together, it takes them 4 hr to finish the job. How long would it take the clerical worker, working alone, to finish the job?
Answer:
8 hours
Step-by-step explanation:
In 2 hours, the clerical secretary can do 1/4 of the job. (The executive secretary does 3/4 of the job - or 3 times as much - in the same 2 hours.)
Since it takes the clerical secretary 2 hours to do 1/4 of the job, it will take them four times that to do it themselves. 2x4=8.
Find the value of b. Round your answer to the nearest tenth.
Answer:
[tex]x = 29.65 \\ = > x = 30[/tex]
Solve the equation.
pls help
Answer:
y=-3
Hope this helps!
I need help fast no scammers
Question:
Find the area of the composite figure round to the nearest tenth
Answer:
360Step-by-step explanation:
(25 x 12) + (10 x 6)
round it 360 >>>>> 360 it is the same
Answer:
360
Step-by-step explanation:
Split the given figure up into two different rectangles. One of these rectangles will have the dimensions (12 and 25), while the other will have the dimensions (6 and 10) Find the area of each rectangle using the general formula ([tex]length * width = area[/tex]), then add the two areas up to find the total area of the figure.
12 * 25
= 300
6 * 10
= 60
300 + 60
= 360
Fre.e points i guess 2+2+2x5=
Answer:
14
Step-by-step explanation:
evaluate multiplication first
14
hope this helped :l
Verify [cos(x)/1+sin(x)] - [cos(x)/1-sin(x)] = -2tan(x)
Answer:
L.H.S = R. H.S
Step-by-step explanation:
Hope, you see the image .
Note; Way to solve question may vary according to your grade
This process is for grade 9 and above
For lower level you can express all tri.. ratios in p , b & h and prove it
Please please help I beg you
Answer and Step-by-step explanation:
Work is in the picture.
We get [tex]30\sqrt{2}[/tex] as the side length, and 180 as the area of the square.
#teamtrees #PAW (Plant And Water)
Write the expression representing the total number of miles run: Jazmin ran 3 miles on Monday. For the next 4 days, she ran x miles each day.
Answer:
4 + x
Step-by-step explanation:
Find the volume of the cylinder.
Either enter an exact answer in terms of T or use 3.14 for T.
8
Answer: V= 100.48 m^3 or in terms of Pi V = 32 π m^3
Step-by-step explanation:
V = πr^2h
V = π(2)^2(8)
V = π(4)(8)
V = 100.48
or
V = π (4)(8)
V = 32 π m^3
What is the value of x in this diagram?
what is 2x-15+21= -18
Answer:
2x - 15 +21 = -18
2x + 6 + 18 = 0
2x + 24 =0 ...it is a linear equation
if u want to solve for X then..
2x = -24
X = - 24
2
X = -12
Heelp me, please.................
Answer:
B
Step-by-step explanation: