If the standard deviation of the data values in a sample is 19, what is the
variance of the data values?
A. 225
B. 169
C. 289
D. 361
Answers
Answer:
D
Step-by-step explanation:
S. D =√V
:.V=S. D^2
V=19^2
V=361
Related Questions
Raoul has 72 wristbands and 96 movie passes to put in gift bags. The greatest common factor for the number of wristbands and the number of movie passes is qual to the number of gift bags. Raoul needs to make. Then find how many wristbands and how many movie passes raoul can put in each gift bag if he evenly distributes the items.
Please help I am stuck I am doing work nonstop on all weekends if I don’t get this right and done please help and will give brainlesst for the correct answer
Answers
Answer:
Step-by-step explanation:
I do know give me brainliest first
Answer:
24 gift bags
Step-by-step explanation:
Well first the question says to find the GCF and you find that by finding prime factors in each number. Then you would want to subtract 96-72 and get the answer of 24 so you would be able to make 24 gift bags. Hope this helps!!
May I have heart, 5 star, and brainliest please?
Find the measure of the arc or angle indicated.
Answers
The measure of the arc or angle is:
m∠NLM = 60 deg
How to find the measure of the arc or angle indicated?From the given figure, line LN is the diameter. Thus, the measure of arc LN is 180° (semicircle).
Thus, we can say:
arc NM + arc ML = 180°
(3x + 21) + (8x + 16) = 180°
11x + 37 = 180
11x = 180 - 37
11x = 143
x = 143/11
x = 13
arc NM = 8x + 16
put x = 13:
arc NM = 8(13) + 16 = 120°
Recall that:
The measure of inscribed angle is half the measure of its intercepted arc. That is:
m∠NLM = 1/2 * 120°
m∠NLM = 60°
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Lindsey estimated the amount of liquid in a container to be 80 ml. The actual amount of liquid was 83 ml. What is the percent error? Round your answer to the nearest whole percent.
Answers
(83-80)/83=3/83
Convert to a percentage 4%
Sally was on the boardwalk and purchased a really large ice cream cone. It had a radius of 3 inches and a height of 6 inches. If the cone was
completely filled with ice cream, with no extra ice cream on top, how many cubic inches of ice
cream did Sally have?
Answers
Answer:
\(18\pi\)
Step-by-step explanation:
This is the same as finding the volume of the cone.
\(V=\frac{1}{3}\pi(3)^2(6)=18\pi\)
Will give points please help
Answers
Answer:
Part A
Step-by-step explanation:
Did test for flvs, brainliest please ;)
For a giveaway a local radio station is putting together goodie bags . The bags will include tickets and posters each bag will receive an equal share of 54 tickets and 36posters
Answers
Answer: There are 18 goodie bags, each with 3 tickets and 2 posters.
Step-by-step explanation:
Carrie has 3gallons of paint Bryan has 10quarts of paint how many more pints do Carrie have than Bryan
Answers
Carrie has 4 more pints of paint than Bryan.
Carrie has 3 gallons of paint, which is equivalent to 12 quarts (1 gallon = 4 quarts). On the other hand, Bryan has 10 quarts of paint.
To compare the quantities in the same unit, we note that 1 quart is equal to 2 pints.
Carrie's 12 quarts of paint is equivalent to 12 × 2 = 24 pints.
Bryan's 10 quarts is equivalent to 10 × 2 = 20 pints.
To find the difference, we subtract Bryan's pint quantity from Carrie's:
24 - 20 = 4 pints.
Therefore, Carrie has 4 more pints of paint than Bryan.
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3 Done Exercise Set 4.3 (Chapter 21) 1. NOTE: The numerical values in this problem have been modified for testing purposes. Forests are complex, evolving ecosystems. For instance, pioneer tree species can be displaced by successional species better adapted to the changing environment. Ecologists mapped a large Canadian forest plot dominated by Douglas fir with an understory of western hemlock and western red cedar. Sapling trees (young trees shorter than 1.3 meters) are indicative of the future of a forest. The 242 sapling trees recorded in this sample forest plot were of the following types: Count of Samplings Tree Species Observed Expected Western Red Cedar 103 Douglas Fir 60 Western Hemlock 79 Can we conclude that there are equal proportions of saplings of these three species in this forest? Add the expected values to the table above. Compute the Chi-Square Goodness-of-Fit test: The value of Chi-Square = and p = (Give your answer to 4 decimal places) Can we conclude that there are equal proportions of saplings of these three species in this forest? O Yes O No
Answers
1) No
We cannot conclude that the sampling of these three species of this forest are of equal proportion because the difference between the observed values of any two of the sampled species is significant.
\(\begin{gathered} P(x)=\frac{x}{242} \\ \text{and} \\ \text{ Expected value }=P(x)\times x \end{gathered}\)| Observed(x) | P(x) | Expected
--------------------------------------------------------------------------------------------------------
Western Red | 103 | 0.4256 | 43.8368
Cedar | | |
-------------------------------------------------------------------------------------------------------------
Douglas Fir | 60 | 0.2479 | 14.8740
----------------------------------------------------------------------------------------------------
Western | 79 | 0.3264 | 25.7856
Hemlock | | |
-------------------------------------------------------------------------------------------------------------
\(\begin{gathered} X^2_c=\sum \frac{\lbrack x-(xP(x))\rbrack^2}{xP(x)} \\ \text{where} \\ X^2_{_c}=\text{ the Chi-Square Goodness of Fit } \end{gathered}\)\(\begin{gathered} \text{Let} \\ A=x-xP(x),B=\frac{A^2}{xP(x)} \end{gathered}\)A | A² | B
--------------------------------------------------------------------------------------------------
59.1632 | 3500.2842 | 79.8481
-------------------------------------------------------------------------------------------
45.1260 | 2036.3559 | 136.9071
---------------------------------------------------------------------------------
53.2144 | 2831.7724 | 109.8199
-------------------------------------------------------------------------------
| ∑ = 326.5751
Therefore, the Chi-Square = 326.5751, p = 0
Dylan hit the ball 48 out of the 60 times he was up to bat. The rest of the time, he snuck out. Approximately what percent did dylan strike out?
Answers
Answer:
20 percent
Step-by-step explanation:
(I had such a good explanation and accidentally refreshed the page)
So basics
48/60 is in
12/60 is out
Now we focus on out
we know this 12/60 becuase 48 is in and there are 60 tries so 60-48=12
So now 12/60 into a percent
A percent is basically x/100
So we gotta make 12/60 into a fraction with a denominator of 100
SO simplify fto make it easier (try to get it to 4,2,5,10,50,25 anything that goes into 100)
1/5
1/5 is 20 percent
thats a benchmark
But if you don’t know
You can always do a pro proton
1/5=x/100
Cross multiply
100=5x
x=20
10+x/2 evaluate the expression for givin values of the variable
Answers
The value of the expression when x = 4 is 12.
The value of the expression when x = -8 is 6.
We have,
To evaluate the expression 10 + x/2 for a given value of the variable x, we simply substitute the value of x into the expression and simplify.
For example:
If x = 4:
10 + x/2 = 10 + 4/2
= 10 + 2
= 12
So when x = 4, the value of the expression is 12.
If x = -8:
10 + x/2 = 10 + (-8)/2
= 10 - 4
= 6
So when x = -8, the value of the expression is 6.
Thus,
The value of the expression when x = 4 is 12.
The value of the expression when x = -8 is 6.
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3 6 9 12 15 18 21 24 27 30 is odd or even numbers?
Answers
Answer: Half of them are even and half of them are odd.
Step-by-step explanation:
The even numbers are 6, 12, 18, 24, and 30. An even number is defined as a number that is divisible by 2, meaning it has no remainder when divided by 2. For example, 6 divided by 2 equals 3 with no remainder, so 6 is even.
The odd numbers are 3, 9, 15, 21, and 27. An odd number is defined as a number that is not divisible by 2, meaning it has a remainder of 1 when divided by 2. For example, 9 divided by 2 equals 4 with a remainder of 1, so 9 is odd.
Therefore, out of the given numbers, half of them are even and half of them are odd.
________________________________________________________
Lara and Hayden volunteer at an animal shelter. Lara already volunteered 50 hours and will volunteer 5 hours more each week. Hayden already volunteered to hours and will volunteer 10 hours each week . At these rates, how many will it take Lara and Hayden to volunteer the same number of ?
Answers
There are 8 to take Lara and Hayden to volunteer the same number.
What is Mathematical expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
Lara already volunteered 50 hours and will volunteer 5 hours more each week.
And, Hayden already volunteered to 10 hours and will volunteer 10 hours each week .
Now, For Lara;
⇒ 50 + 5x
And, For Hayden;
⇒ 10 + 10x
So, For same number of volunteer is,
⇒ 50 + 5x = 10 + 10x
⇒ 50 - 10 = 10x - 5x
⇒ 40 = 5x
⇒ x = 40/5
⇒ x = 8
Thus, There are 8 to take Lara and Hayden to volunteer the same number.
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Solve for x in this equation: 3/4+|5-x| = 13/4
step 1: 3/4
step 2: -5/2
step 3: 5-x= 5/2
step 4: 5
step 5: 5/2
I just did the equation on edgeinuity 2020
Answers
Answer: X =5/2, 15/2 x=2.5, 7.5
Step-by-step explanation:
98,000 divided by 4,000 equal
Answers
Answer:
24.5 it will be your answer
hope it helps
Step-by-step explanation:
98000/4000 =24.5
How can the figure below be changed so that it has exactly one lines of symmetry?
B
C
D
Move point Done unit to the left.
Move point C two units to the right.
Move point B one and one-half units to the left.
Move point A one unit to the right.
Answers
Answer:
Mov
Step-by-step explanation:
move point b one and one half units to the left
−3x>24 solve the inequality
Answers
Answer:
x < -8
Step-by-step explanation:
−3x>24
Divide each side by negative 3, remembering to flip the inequality
-3x/-3 < 24/-3
x < -8
Answer:
x<-8
Step-by-step explanation:
−3x>24
Multiply both sides by (-1) (reverse the inequality)
(-3x)(-1)<24(-1)
Simplify;
3x<-24
Divide both sides by 3
3x/3<-24/3
Simplify
3x/3<-24/3
Simplify; 3x/3
=x
Simplify; -24/3
Divide the numbers;24/3=8
=-8
x<-8
Hope this helped!!!
I dont understand it
Answers
Answer:
30xy
Step-by-step explanation:
I divided this shape into a square and a rectangle.
Solve:
First I multiplied 2x and 3y
2x*3y= 6xy
Then I multiplied 6x and 4y
6x*4y= 24xy
Then I added them together
24xy+6xy= 30xy
Hope this helps!
picture is attached for you to see
Answers
Answer:
a) False
b) True
Step-by-step explanation:
a) h(1) = 0/0, which is certainly undefined. There may or may not be a finite limit at that point, so the line x=1 is not necessarily a vertical asymptote.
The assertion that x=1 is necessarily a vertical asymptote is False.
__
b) h(2) = 4/0, another undefined value. However, we can be certain that the limit of h(x) as x → 2 is infinite, meaning the line x=2 will be a vertical asymptote.
The assertion that x=2 is necessarily a vertical asymptote is True.
_____
The graph shows a simple example of a function that has the given characteristics.
When finding point slope form, it is important to
find the
from the two points first. Then
use one of the
to plug into the equation
Answers
Answer:
slopee, points, \(y-y_1=m(x-x_1)\)
Question 8 (1 point)
The selling price of a widget is $15 and the fixed cost per month is $4,800. The variable cost per widget is $9. Calculate the
contribution margin rate.
0000
b
C
d
Question 8 of 20 | Page 8 of 20
40%
60%
30%
50%
Answers
The contribution margin rate is 40%.
What is contribution margin rate?
A company's contribution margin rate is the total revenue minus variable costs divided by the revenue.
First we need to determine the contribution margin in order to calculate the contribution margin rate. There are two approaches to determine the contribution margin.
Contribution Margin = Net Sales Revenue – Variable CostContribution Margin = Fixed Costs + Net IncomeContribution Margin = $15 - $9 = $6
The contribution margin is $6.
Now we will calculate the contribution margin rate using this formula,
Contribution Margin Rate = Contribution Margin \(/\) Sales Revenue
Contribution Margin Rate = $6 / $15
= 0.4 * 100
= 40%.
Hence the contribution margin rate is 40%.
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is this correct or no?
Answers
Answer:
Uh, is what correct or no
Step-by-step explanation:
yall please please help right now.. ill give u brainliest and 5 stars and thank you. only the first person that answers.
Answers
Answer:
\(\frac{11}{5}\)
Step-by-step explanation:
Convert 85 miles per hour to meters per second. (Use 1.61 km = 1 mile)
show the steps
Answers
Answer:
38.0 m/s
Step-by-step explanation:
Units conversion can be done by multiplying by appropriate conversion factors. Each conversion factor has a value of 1: the numerator is equal to the denominator, but the units are different. The units are chosen so that cancelling unwanted units gives the set of units you want.
__
\(\dfrac{85\text{ mi}}{1\text{ h}}\times\dfrac{1.61\text{ km}}{1\text{ mi}}\times\dfrac{1000\text{ m}}{1\text{ km}}\times\dfrac{1\text{ h}}{3600\text{ s}}=\dfrac{85\cdot1.61\cdot1000\text{ m}}{3600\text{ s}}\\\\\approx\boxed{38.0\text{ m/s}}\)
Divide. 7/8÷(−5/12) −21/10 −10/21 −35/96
Answers
Answer: - 21/10
Step-by-step explanation:
Describe the translations that map the original tile to the four tiles specified.
1 to 2: (x,y) → ()
1 to 4: (x,y) → (0)
1 to 6: (x,y)-(0)
1 to 8: (x,y)-(0)
Answers
The translations that map to the four tiles are 1 to 2: (x,y) → (x + 2, y), 1 to 4: (x,y) → (x, y + 2), 1 to 6: (x,y) → (x + 4, y + 2) and 1 to 8: (x,y) → (x + 2, y + 4)
Describing the translations that map to the four tilesFrom the question, we have the following parameters that can be used in our computation:
The graph
From 1 to 2, we can see that the figure is shifted to the right by 2 units
This is represented as
1 to 2: (x,y) → (x + 2, y)
From 1 to 4, we can see that the figure is shifted up by 2 units
This is represented as
1 to 4: (x,y) → (x, y + 2)
From 1 to 6, we can see that the figure is shifted up by 2 units and shifted right by 4
This is represented as
1 to 6: (x,y) → (x + 4, y + 2)
From 1 to 8, we can see that the figure is shifted up by 4 units and shifted right by 2
This is represented as
1 to 8: (x,y) → (x + 2, y + 4)
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3(4x + 10) = 12x + 20
How many solutions does this equation have ?
Answers
help me pleaseeeee ive been stuck on this question and looked at the videos i need helpp with it.
Answers
Answer:
Step-by-step explanation:
a) 2x-6 is equivalent to 1) -6+2x
b) 5/3-x+1/3 is equivalent to 4) x-3+x
c) 2x-3 is equivalent to 3) -6.9++4.9
d) 3x+0 is equivalent to 2) 3x
e) 3/5-13/5 is equivalent to 5) 3/2x+2+1/2x
In the circle below, if AD is a diameter, and the arc BD = 18x - 2, and arc DC = 15x + 25, find x.
Answers
Answer:
\(D\)Explanation:
Here, we want to find the value of x
For us to get the value of x, we have it that:
\(BD\text{ = DC}\)The above is because, if a diameter is perpendicular to a chord, then it bisects the chord
Since AD is perpendicular to BC, then it bisects BC
Thus:
\(\begin{gathered} 18x-2\text{ = 15x + 25} \\ 18x-15x\text{ = 25 + 2} \\ 3x\text{ = 27} \\ x\text{ = }\frac{27}{3} \\ x\text{ = 9} \end{gathered}\)If 400 x 300 = 120,000
And 40 x 30 is 1,200
Fill in the blanks and show your work
*_____ x ______ = 12,000?
Answers
Answer:
this list
Step-by-step explanation:
1×12000=12000
2×6000=12000
3×4000=12000
4×3000=12000
5×2400=12000
6×2000=12000
8×1500=12000
10 ×1200=12000
12 ×1000=12000
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The length of a radius of a circle, measured in feet, is represented by the expression z + 3.6. The diameter of the circle is 11 4/5 ft.
What is the value of z?
Enter your answer as a decimal or mixed number in simplest form in the box.
Answers
The value of z in the circle is 2.3 units
How to determine the value of z in the circleIn the question, the following statements represents the given parameters
The length of a radius of a circle is represented by the expression z + 3.6. The given circle diameter is 11 4/5 ft.As a general rule, the diameter of a circle is the radius doubled
So, we have
2 * (z + 3.6) = 11 4/5
Express as decimal
2 * (z + 3.6) = 11.8
So, we have
z + 3.6 = 5.9
Evaluate the like terms
z = 2.3
Hence, the value of z is 2.3
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