Answer:
Step-by-step explanation:
The data set below shows the number of questions that each of the 20 students in the sample answered correctly.
12 , 16 , 18, 17 , 18 , 33 , 41 , 44 , 38 , 35 , 19, 36, 19 ,13, 43, 8 ,16, 14, 10, 9
Arrange the data in ascending order:
8 ,9 ,10 ,12 ,13 ,14 ,16 ,16 ,17 ,18 ,18 ,19 ,19 ,33 ,35 ,36 ,38 ,41 ,43 ,44
a)
Key 0|8=08 number of questions answered correctly
0| 9 , 9
1| 0,2,3,4,6,6,7,8,8,9,9
2|
3| 3,5,6,8
4| 1,3,4
b)
The plot is divided into two groups
One is mid tens and other in the high 30's
There is no score in 20's
c) A measure of center might fall between the two groups i.e. mean is 22.95 where there is no data and would not provide an accurate picture of student performance
1. The perimeter of a rectangular rug is 40 feet. The length is 4 feet less
than twice the width.
a. Find the length and the width of the rug
b. Find the area of the rug.
2. The sum of three numbers is 45. The second number is 8 less than the
first and the third number is 5more than twice the first. Find the three
numbers.
I need help with both questions please help.
polar decomposition of complex matrx
Answer:
hope it helps you
Step-by-step explanation:
The right polar decomposition of a matrix A ∈ Cm×n m ≥ n has the form A = UP where U ∈ Cm×n is a matrix with orthonormal columns and P ∈ Cn×n is positive semi-definite. Definition 2.2 (Left Polar Decomposition).
(2fg)7 simplify the expression
Answer:
14 f g
Step-by-step explanation:
Multiply 7 by 2 .
Susan needs to buy apples and oranges to make fruit salad. She needs 15 fruits in all. Apples cost $3 per piece, and oranges cost $2 per piece. Let m represent the number of apples. Identify an expression that represents the amount Susan spent on the fruits. Then identify the amount she spent if she bought 6 apples. 30 + 5m; $36 30 + m; $36 30 + 5m; $24 30 + m; $24
Answer:
m + 30 ; $36
Step-by-step explanation:
Given that:
Total fruits needed = 15
Fruits needed :
Apple (m) ; cost = $3 per piece
Oranges (o) ; cost = $2 per piece
Amount spent on fruits :
[(cost of apple * number of apples) + (cost of orange *(total fruits - number of apples)]
3m + 2(15 - m)
3m + 30 - 2m
3m - 2m + 30
m + 30
Amount spent if 6 apples is purchased :
m = 6
m + 30
6 + 30 = $36
Denise is going to shop with the $250.00 that she earned from doing chores. She wants to save
20% of her money to put into a savings account. She buys a pair of jeans for $75.00 and a new
leather coat for $110.00, with 5% sales tax on both items. Does Denise still have the amount of
money she planned to put into her savings account?
Yes she does.
I just answered the question.
The GCF of two numbers is equal to the lesser of the numbers? Always,sometimes, or never true
Answer:
Sometimes
Step-by-step explanation:
To answer this question, I'll make use of the following illustrations:
GCF of 4 and 10
[tex]4 = 1 * 2 * 2[/tex]
[tex]10 = 1 * 2 * 5[/tex]
Hence:
The GCF is
[tex]GCF = 1 * 2[/tex]
[tex]GCF = 2[/tex]
GCF of 5 and 10
[tex]5 = 1 * 5[/tex]
[tex]10 = 1 * 2 * 5[/tex]
[tex]GCF = 1 * 5[/tex]
[tex]GCF = 5[/tex]
In the first scenario, the GCF is lesser than the smallest number.
In the second, the GCF is equal to the smaller number.
Hence:
The option that completes the question is "sometimes"
Enter an equation in standard form to model the linear situation.
A barrel of oil was filled at a constant rate of 6.7 gal/min. The barrel had 12 gallons before filling began.
Answer:
jdfjafdsds
Step-by-step explanation:
Pleas help I am brainliesting
Answer:
$2.22 i think
Step-by-step explanation:
Answer:
You would have $2.22 left.
Step-by-step explanation:
6.96 - (0.79 * 6)
6.96 - 4.74
2.22
An analysis of several polls suggests that 60% of all Florida voters plan to vote for Anderson. A poll of 250 randomly selected Florida voters shows that 144 plan to vote for Anderson.
Required:
a. What is the probability of this result (i.e. 144 voters or less out of 250) happening by chance, assuming the aggregate poll model proportion of 60% is correct?
b. Does your result from part I indicate that the number of voters who plan to vote for Anderson has decreased? In other words, is this outcome unusual?
Complete Question
An analysis of several polls suggests that 60% of all Florida voters plan to vote for Anderson. A poll of 250 randomly selected Florida voters shows that 144 plan to vote for Anderson.
Required:
a. What is the probability of this result (i.e. 144 voters or less out of 250) happening by chance, assuming the aggregate poll model proportion of 60% is correct?
b. Does your result from part I indicate that the number of voters who plan to vote for Anderson has decreased? In other words, is this outcome unusual?(Recall that an unusual event has a probability of 0.05 or less of occurring )
Answer:
a
[tex]P(p < \^p) = 0.2206[/tex]
b
It is not an unusual event
Step-by-step explanation:
From the question we are told that
The population proportion is p = 0.60
The sample size is n = 250
The number that plans to vote for Anderson is k = 144
Generally the mean of the sampling distribution is
[tex]\mu _{x} = p = 0.60[/tex]
Generally the standard deviation is
[tex]\sigma = \sqrt{ \frac{p(1 - p )}{n} }[/tex]
=> [tex]\sigma = \sqrt{ \frac{0.60(1 - 0.60 )}{250} }[/tex]
=> [tex]\sigma = 0.0310[/tex]
Generally the sample proportion is mathematically represented as
[tex]\^{p} = \frac{k}{n}[/tex]
=> [tex]\^{p} = \frac{144}{250}[/tex]
=> [tex]\^{p} = 0.576 [/tex]
Gnerally the probability of this result (i.e. 144 voters or less out of 250) happening by chance, assuming the aggregate poll model proportion of 60% is correct is mathematically represented as
[tex]P(p < \^p) = P(\frac{ p - \mu_{x}}{ \sigma } < \frac{ \^ p - \mu_{x}}{ \sigma } )[/tex]
=> [tex]P(p < \^p) = P(Z < \frac{ 0.576 - 0,60}{ 0.0310} )[/tex]
=> [tex]P(p < \^p) = P(Z < -0.77 )[/tex]
From the z-table the probability of (Z < -0.77) is
[tex]P(Z < -0.77 ) = 0.2206[/tex]
So
[tex]P(p < \^p) = 0.2206[/tex]
Since
[tex]0.2206 > 0.05[/tex] it implies that it is not an unusual event
Walking100
a) How many students ride in a tricycle, motorcycle and car going to their school
b) How many students ride in both a motorcycle and a tricycle?
c) How many students ride in both a motorcycle and a car?
d) How many students ride in both a car and tricycle?
e.)How many students go to school
in a car only;
in a motorcycle only;
30
Complete question :
The Venn diagram relating to the question can be found in the picture attached below :
Answer:
A.) 15 ; b.) 17 ; c.) 20 ; d.) 19 ; e.) 55 ; 67; 76 ;100 ; F.) 369
Step-by-step explanation:
Let :
Cars = C ; Motorcycle = M ; Tricycle = T ; Walking = W
a) How many students ride in a tricycle, motorcycle and car going to their school
Intersection of the 3 modes;
(C n M n T) = 15 ; it is the number which sits in between all the three circles.
B.) How many students ride in both a motorcycle and a tricycle?
(M n T) = 17 ; number in the middle of both circles representing motorcycle and tricycle
C.) How many students ride in both a motorcycle and a car?
(M n C) = 20 ; number in the middle of both circles representing motorcycle and Car
D) How many students ride in both a car and tricycle?
(C n T) = 19 ; number in the middle of both circles representing Car and tricycle
e.)How many students go to school
in a car only = 55
in a motorcycle only = 67
Tricycle only = 76
Walking = 100
F.) How many Grade Seven students of Koronadal National Comprehensive High School are there in all?
(100 + 67 + 76 + 55 + 19 + 20 + 17 + 15) = 369
Kari is building a rectangular garden bed. The length is 6 feet. She has 20 feet of boards to make the sides. Write and solve an inequality to find the possible width of her garden bed.
Answer:
ahe using 12 feet of boards and threre 8 ft of board left so i guess the with will be 4.
Step-by-step explanation:
6+6 =12 for the lenghth
4+4=8= for the with
The area of the base of an 8-inch-tall cylinder is 36 inches2. What is the volume of this cylinder?
*Please make sure you show how you got the answer
Answer:
288 cubic imches
Step-by-step explanation:
[tex]V_{cylinder} = Area \: of \: base \times height \\ \\ V_{cylinder} = 36 \times 8 \\ \\ V_{cylinder} = 288 \: {inches}^{3} [/tex]
a) how would you work out 4 1/3 x 6?
The solution of the expression 4¹/₃ x 6 will be 26.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the expression is 4¹/₃ x 6. The expression of multiplication will be solved as below,
E = 4¹/₃ x 6
E = ( 13 / 3 0 x 6
E = 13 x 2
E = 26
Hence, the solution will be 26.
To know more about an expression follow
https://brainly.com/question/28773316
#SPJ2
Read 3 integer numbers from the user; these numbers represent the lengths of 3 straight lines. From the 3 lengths, determine whether a triangle can be formed with the corresponding lines. If it is possible to form a triangle, determine whether the triangle is a right triangle or not. The rules to be used are: 1. To form a triangle where all lines’ ends meet (form vertices), the sum of the lengths of two sides must be greater than the length of the third side. This short video illustrates this concept: How to determine if the three sides make up a triangle. 2. Per the Pythagorean theorem: in a straight triangle, the square of the length of the longest side (the hypotenuse) is equal to the sum of the squares of the lengths of the other two sides. 3. The user can enter the lengths of each line in any order, i.e.: you may not assume that the first length is the longest or the smallest or the middle value.
Answer:
Written in Python
print("Enter three sides of a triangle: ")
length = []
for i in range(0,3):
inp = int(input(""))
length.append(inp)
length.sort()
if length[1]+length[2] > length[0] and length[0] + length[2] > length[1] and length[0] + length[1] > length[2]:
print("Triangle")
if length[2]**2 == length[0]**2 + length[1] **2:
print("Right Angled")
else:
print("Not Right Angled")
else:
print("Not Triangle")
Step-by-step explanation:
This line prompts user for sides of triangle
print("Enter three sides of a triangle: ")
This line declares an empty list
length = []
The following iteration gets user input
for i in range(0,3):
inp = int(input(""))
length.append(inp)
This line sorts user input
length.sort()
The following if condition checks if user input is triangle
if length[1]+length[2] > length[0] and length[0] + length[2] > length[1] and length[0] + length[1] > length[2]:
The following is executed is the if condition is true
print("Triangle")
The following if condition checks if user input forms a right angled triangle
if length[2]**2 == length[0]**2 + length[1] **2:
print("Right Angled")
else:
print("Not Right Angled")
This is executed if user input is not a triangle
else:
print("Not Triangle")
How many of the 20% acidic solution be added to create the needed 30% acidity in the final mixture
i need help with this equation: p+9=-1
Answer:
p = - 10
Step-by-step explanation:
Step 1:
p + 9 = - 1 Equation
Step 2:
p = - 1 - 9 Subtract 9 on both sides
Answer:
p = - 10
Hope This Helps :)
pLeAse hurry i must finish right now
look at screenshot
please answer all of #2
Answer:
Sorry can't do this
Step-by-step explanation:
Answer:
uhhhhhhhhhhhhhhhhhhhhhhhhh 4
Step-by-step explanation:
How do I write Domain and Range in inequality notation?
Answer:
Step-by-step explanation:To combine two intervals using inequality notation or set-builder notation, we use the word “or.” As we saw in earlier examples, we use the union symbol, \displaystyle \cup∪, to combine two unconnected intervals. For example, the union of the sets \displaystyle \left\{2,3,5\right\}{2,3,5} and \displaystyle \left\{4,6\right\}{4,6} is the set \displaystyle \left\{2,3,4,5,6\right\}{2,3,4,5,6}. It is the set of all elements that belong to one or the other (or both) of the original two sets. For sets with a finite number of elements like these, the elements do not have to be listed in ascending order of numerical value. If the original two sets have some elements in common, those elements should be listed only once in the union set. For sets of real numbers on intervals, another example of a union is
Three assembly lines Alpha, Beta, and Gamma make the same power transistor. Each of the assembly lines has its own level of efficiency. Resulting in inventory having 20% of the transistors from Alpha, 50% from Beta, and the remaining 30% from Gamma. Further the probability a transistor from Alpha will be defective is 0.02, a transistor from Beta will be defective is 0.06, and a transistor from Gamma will be defective is 0.04. If a random transistor from inventory is defective, what is the probability it came from Bet
Answer:
P [ β / Def] = 0,6521 or 65,21 %
Step-by-step explanation:
Tree diagram:
0,20 (α) Defective 0,02
0,50 (β) defective 0,06
0,30 (γ) defective 0,04
According to Baye´s Theorem
P [ A/B] = P[A] * P [ B/A] / P[B]
if we call
β = A and Defective = B then P[β] = P[A] and P[Defective] = P[B]
we get :
P [ β / Def] = P[β] * P [ def./β] / P[def]
Then
P[β] = 0,5
P[def/β] = 0,06
P [Defective] = 0,02* 0,2 + 0,06*0,5 + 0,04*0,3
P [Defective] = 0,004 + 0,03 + 0,012
P [Defective] = 0,046
P [ β / Def] = 0,5 * 0,06 / 0,046
P [ β / Def] = 0,6521 or 65,21 %
The class has a ratio of 5 boys for every 8 girls. If the school has 312 students, how many are boys
Answer:
120, if I did it right
Step-by-step explanation:
In a group of 13 students, 5 are boys. Turn that into a fraction, 5 over 13 or 5/13. Just multiply 5/13 times 312 and you get your answer, 120.
Question 4
1 pts
What is the midpoint of the segment containing the endpoints (-3.3) and
05.1:
Answer:
1, 2
Step-by-step explanation:
Given parameters;
Endpoints = (-3, 3) and (5, 1)
Unknown:
The midpoint of the segment = ?
Solution:
The midpoint between two endpoints is given as;
x[tex]_{m}[/tex], y[tex]_{m}[/tex] =( [tex]\frac{x_{1} + x_{2} }{2}[/tex] , [tex]\frac{y_{1} + y_{2} }{2}[/tex])
x and y are coordinates
x₁ = -3
x₂ = 5
y₁ = 3
y₂ = 1
x[tex]_{m}[/tex], y[tex]_{m}[/tex] = [tex]\frac{-3 + 5}{2}[/tex], [tex]\frac{3+ 1}{2}[/tex]
x[tex]_{m}[/tex], y[tex]_{m}[/tex] = 1, 2
-2/3x^2-1=17 can y'all help me please !!!
The answer is ±3[tex]\sqrt{3\\}[/tex]
First, you should make one side of the quadratic 0. You can do this by subtracting 17 from both sides, making the equation
2/3x^2 - 18 = 0
To make everything an integer, you can multiply both sides by 3/2, making the equation
x^2 - 27 = 0
By adding 27 to both sides, you get
x^2 = 27
Now you are practically done! By taking the square root of both sides, you get
x = ±3[tex]\sqrt{3\\}[/tex]
What is the value of sin-1(1)?
The value of sin^(-1) 1 is; π/2
We want to find the value of sin^(-1) 1Now, when using trigonometric functions, we know that; If sin θ = x Then; θ = sin^(-1) xNow, we want to find the angle.We know that in radians the value of θ at which sin θ = 1 is; π/2 radians
Thus; sin^(-1) 1 = π/2
Read more about trigonometric angles at; https://brainly.com/question/22591162
PLEASE HELP ME
My teacher is really bad at explaining this so I'm confused
Ben solved a fraction division problem using the rule “multiply by the reciprocal.” Look at his work.
StartFraction 7 Over 20 EndFraction divided by two-fifths. StartFraction 20 Over 7 EndFraction times two-fifths = StartFraction 40 Over 35 EndFraction = StartFraction 8 Over 7 EndFraction = 1 and StartFraction 1 Over 7 EndFraction
Did he solve the problem correctly?
Yes. He solved the problem correctly.
No. He multiplied the dividend by the divisor.
No. He multiplied the denominators instead of finding a common denominator.
No. He multiplied with the reciprocal of the dividend instead of with the reciprocal of the divisor.
Answer:
(d) No. He multiplied with the reciprocal of the dividend instead of with the reciprocal of the divisor.
Step-by-step explanation:
The problem should have been written ...
[tex]\dfrac{7}{20}\div\dfrac{2}{5}=\dfrac{7}{20}\times\dfrac{5}{2}\qquad\text{the reciprocal of the divisor is used}[/tex]
Instead, Ben wrote it as ...
[tex]=\dfrac{20}{7}\times\dfrac{2}{5}\qquad\text{the reciprocal of the dividend is erroneously used}[/tex]
_____
Additional comment
Ben will get the reciprocal of the proper answer: 8/7 instead of the correct value of 7/8.
Answer:
D) No. He multiplied with the reciprocal of the dividend instead of with the reciprocal of the divisor.
Step-by-step explanation:
Tyler has a baseball bat that weighs 28 ounces. Find this weight in kilograms and in grams.
Answer:
28 in grams=793.787 and 28 in kilo =0.793787
Step-by-step explanation:
Your family goes to dinner. The meal costs $55 for all of you. You pay 7% sales tax and leave a 9% tip. What is the total cost of the meal after tax and tip?
Answer:
8.80 dollars
Step-by-step explanation:
there are 5,280 feet in 1 mile if Riley ran 26,400 feet how many miles did she run
BAKING A recipe for 1 apple pie calls for 6 cups of sliced apples. How
many cups of sliced apples are needed to make 4 apple pies?
Answer:
24 cups of sliced apples
Step-by-step explanation:
6 multiplied by 4=24
hope this helps
Angela earns $11.50 per hour. If she works more than 40 hours a week she earns double time. This week she worked a total of 48 hours. How much was her total weekly paycheck?
Answer:
11.50 x 40 regular hours is $460
double time is 11.50 x 2 = $23 an hour
She makes $23 an hour for 8 hours = $184
$460 + $184 = $644 paycheck
