A questionnaire was given to students in an introductory statistics class during the first week of the course. One question
asked, "How stressed have you been in the last 2 weeks, on a scale of 0 to 10, with 0 being not at all stressed and 10 being
as stressed as possible?" The students' responses are shown in the frequency distribution. How many students were involved
in the study?
students
Answers
Answer:
Step-by-step explanation:
2+0 is zero I mean two and 1+1 is two and 5+ I forgot something and you know you just need to add them up together in it at all your answer
Related Questions
11 There are 20 marbles in a bag. 0/1 . 4 marbles are green. • 7 marbles are red. 5 marbles are white. • 4 marbles are purple. Based on this information, what is the probability a marble choosen will be green or purple? Show Your Work y Green y Purple u 8 8 20 5 4 니 + 20 marbles You have responded to 11 of 11 questions 1 response does not have any content.
Answers
Answer:
1 There are 20 marbles in a bag. 0/1 . 4 marbles are green. • 7 marbles are red. 5 marbles are white. • 4 marbles are purple. Based on this information, what is the probability a marble choosen will be green or purple? Show Your Work y Green y Purple u 8 8 20 5 4 니 + 20 marbles You have responded to 11 of 11 questions 1 response does not have any content.
Step-by-step explanation:
Anyone know this?? Thanks
Answers
9514 1404 393
Answer:
x = 4
Step-by-step explanation:
The figure is a rhombus when the sides are the same length.
21 -x = 2x +9
12 = 3x . . . . . . . . add x-9 to both sides
4 = x . . . . . . . . . . divide by 3
Given y=4x+2, find the domain value if the range value is 4
Answers
4-2=4x+2-2
2=4x
Divided both sides by 4
X=1\2
The domain value that corresponds to a range value of 4 is,
⇒ x = 1/2
Given that;
Function is,
y = 4x + 2
Since, the equation equal to the range value:
4 = 4x + 2
Then, we can solve for "x":
4 - 2 = 4x
2 = 4x
x = 1/2
Now that we have the value of "x", we can find the corresponding value of "y" by substituting it into the given equation:
y = 4x + 2
y = 4(1/2) + 2
y = 4 + 2
y = 6
Therefore, the domain value that corresponds to a range value of 4 is,
⇒ x = 1/2
Learn more about the function visit:
https://brainly.com/question/11624077
#SPJ1
Use the division or the multiplication property of equality to solve 2x = 48. What is the result?
Answers
Answer:24
Step-by-step exfind out what 2 times blank eguals 48
2x + 2 = 5x -8 simplify
Answers
Answer, x = 1
-1000 2/3 is not real fraction. True or false
Answers
True, While "-1000 2/3" is not a real fraction, it can be represented as the improper fraction -2998/3.
The statement "-1000 2/3 is not a real fraction" is true. A real fraction is a mathematical expression that represents a ratio of two real numbers. In a fraction, the numerator and denominator are both real numbers, and they can be positive, negative, or zero.
In the given statement, "-1000 2/3" is not a valid representation of a fraction. The presence of a space between "-1000" and "2/3" suggests that they are separate entities rather than being part of a single fraction.
To represent a mixed number (a whole number combined with a fraction), a space or a plus sign is typically used between the whole number and the fraction. For example, a valid representation of a mixed number would be "-1000 2/3" or "-1000 + 2/3". However, without the proper formatting, "-1000 2/3" is not considered a real fraction.
It's important to note that "-1000 2/3" can still be expressed as an improper fraction. To convert it into an improper fraction, we multiply the whole number (-1000) by the denominator of the fraction (3) and add the numerator (2). The result would be (-1000 * 3 + 2) / 3 = (-3000 + 2) / 3 = -2998/3.
In conclusion, while "-1000 2/3" is not a real fraction, it can be represented as the improper fraction -2998/3.
for more such question on fraction visit
https://brainly.com/question/30122573
#SPJ8
Two regular pentagons and a regular decagon, all with the same side length, can completely surround a point, as shown.
Asymptote code below. An equilateral triangle, a regular octagon, and a regular -gon, all with the same side length, also completely surround a point. Find .
Answers
The regular polygon has 20 sides.
The regular pentagon is a regular polygon with five sides
The regular decagon is a regular decagon with ten sides
The angle sum around a point adds to 360 degrees.
Each interior angle of the square is 90 degrees
Each interior angle of the regular pentagon is 108 degrees.
The Interior angle of our unknown polygon is 360 - 108 - 90 = 162 degrees.
A quick calculation shows us that the exterior angle of this polygon is 18 degrees.
The sum of the external angles of any regular polygon is 360 degrees
Divide 360 by 18 and you get 20 times.
Thus our unknown polygon has 20 sides.
To know more about the regular pentagon:
https://brainly.com/question/28341967
#SPJ4
Identifying an Error
Identify the error in the student solution shown
below. Find the correct answer.
2ln(x)= In(3x) - [In(9) - 2ln(3)]
In(x²) In(3x)-[In(9) - In(9)]
In(~2) 1/25)
Answers
The incorrect step is ln(x²) = ln(3x/0) because ln(x/y) = lnx - lny and the solutions are x = 0, 3
What is a logarithm?It is another way to represent the power of numbers, and we say that 'b' is the logarithm of 'c' with base 'a' if and only if 'a' to the power 'b' equals 'c'.
\(\rm a^b = c\\log_ac =b\)
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
We have:
2ln(x) = In(3x) - [In(9) - 2ln(3)]
In(x²) = In(3x) - [In(9) - In(9)]
ln(x²) = ln(3x) - 0
ln(x²) = ln(3x/0) (incorrect step)
ln(x²) = ln(3x)
x² = 3x (correct step)
x² - 3x =0
x(x - 3) = 0
x = 0, 3
Thus, the incorrect step is ln(x²) = ln(3x/0) because ln(x/y) = lnx - lny and the solutions are x = 0, 3
Learn more about the Logarithm here:
brainly.com/question/163125
#SPJ1
Function operations
Answers
Can’t see the image above. It’s black
Explanation:
Two large trees, 5.5m and 6.8m tall, stand 12m apart. A bird flies directly from the top of one tree to the top of the other. How far has the bird flown?
Answers
Which function has a greater maximum?
�
(
�
)
=
−
2
(
�
+
4
)
2
+
1
f(x)=−2(x+4)
2
+1f, left parenthesis, x, right parenthesis, equals, minus, 2, left parenthesis, x, plus, 4, right parenthesis, squared, plus, 1
A coordinate plane. The x- and y-axes both scale by one. The graph is the function y equals g of x which is a parabola that opens down. The function increases through negative four, negative five and negative three, negative two. It has a maximum at negative two, one, then the function decreases through negative one, negative two and zero, negative five.
Answers
The function f(x) = \(-2(x+4)^2\) + 1 has a greater maximum.
1. The given function is f(x) = \(-2(x+4)^2\) + 1.
2. To find the maximum of the function, we need to determine the vertex of the parabola.
3. The vertex form of a quadratic function is given by f(x) = \(a(x-h)^2\) + k, where (h, k) represents the vertex.
4. Comparing the given function to the vertex form, we see that a = -2, h = -4, and k = 1.
5. The x-coordinate of the vertex is given by h = -4.
6. To find the y-coordinate of the vertex, substitute the x-coordinate into the function: f(-4) = \(-2(-4+4)^2\) + 1 = \(-2(0)^2\) + 1 = 1.
7. Therefore, the vertex of the function is (-4, 1), which represents the maximum point.
8. Comparing this maximum point to the information provided about the other function g(x) on the coordinate plane, we can conclude that the maximum of f(x) = \(-2(x+4)^2\) + 1 is greater than the maximum of g(x).
9. The given information about g(x) is not sufficient to determine its maximum value or specific equation, so a direct comparison is not possible.
10. Hence, the function f(x) =\(-2(x+4)^2\) + 1 has a greater maximum.
For more such questions on maximum, click on:
https://brainly.com/question/29795588
#SPJ8
The parent absolute value function is reflected across the x-axis and translated right 2 units. Which function is represented by the graph?
–|x – 2|
–|x + 2|
|–x| – 2
|–x| + 2
Answers
The function represented by the graph with the given transformations is |–x| + 2.
The function represented by the given transformations is |–x| + 2.
Let's analyze the transformations step by step:
Reflection across the x-axis:
Reflecting the parent absolute value function across the x-axis changes the sign of the function. The positive slopes become negative, and the negative slopes become positive. This transformation is denoted by a negative sign in front of the function.
Translation right 2 units:
Translating the function right 2 units shifts the entire graph horizontally to the right. This transformation is denoted by subtracting the value being translated from the input of the function.
Combining these transformations, the function |–x| + 2 results. The negative sign reflects the function across the x-axis, and the subtraction of 2 units translates it right. The absolute value is applied to the negated x, ensuring that the function always returns a positive value.
Thus, the function represented by the graph with the given transformations is |–x| + 2.
For more questions on function
https://brainly.com/question/30905449
#SPJ8
Answer: -lx-2l
Step-by-step explanation:
i dont get how to do this so i was wondering if someone could explain to me
Answers
Answer:
The are vertical angles.
Step-by-step explanation:
So as you can see in my picture i drew those lines, they are vertically opposite from each other.
Hope this helps!
Good Luck!
Please mark me bralinest if you can :)
Answer:
Vertical
Step-by-step explanation:
<AGB and <EGD are vertical angles because they are vertically opposite from each other since they were created from two lines crossing.
-You know that they aren't adjacent because they aren't next to each other and don't share a side or a vertex.
-They can't be supplementary because they don't add up to 180 degrees
-They can't be complementary because they don't make up 90 degrees
Consider the following sets of sample data:A: $31,100, $25,800, $36,300, $30,200, $30,000, $19,800, $22,300, $22,600, $34,900, $21,700, $36,900, $30,800, $31,700, $37,100B: 3.18, 4.24, 4.27, 4.38, 3.87, 4.75, 3.43, 3.35, 4.16, 4.81, 2.98Step 1 of 2 : For each of the above sets of sample data, calculate the coefficient of variation, CV. Round to one decimal place.
Answers
The coefficient of variation for A is 20.37% and for B is 15.98%.
What is coefficient of variation?
In statistics, the relative standard deviation (RSD), commonly referred to as the coefficient of variation formula (CV), is a standardized way to assess how widely spaced out a probability distribution or frequency distribution is. Lower values of the coefficient of variation indicate that the data is highly stable and less variable.
We know that formula for coefficient of variation is
CV = Standard Deviation / Mean
A. $31,100, $25,800, $36,300, $30,200, $30,000, $19,800, $22,300, $22,600, $34,900, $21,700, $36,900, $30,800, $31,700, $37,100
Mean = 411200 / 14
Mean = $29371.42
Similarly,
Standard Deviation = $5984.52
So,
CV = 5984.52 / 29371.42 * 100
CV = 20.37%
B. 3.18, 4.24, 4.27, 4.38, 3.87, 4.75, 3.43, 3.35, 4.16, 4.81, 2.98
Mean = 43.42 / 11
Mean = $3.94
Similarly,
Standard Deviation = $0.63
So,
CV = 0.63 / 3.94 * 100
CV = 15.98%
Hence, the coefficient of variation for A is 20.37% and for B is 15.98%.
Learn more about coefficient of variation from the given link
https://brainly.com/question/30783938
#SPJ1
The ratio of boys to girls in a school is 7:4.
What fraction of the students are boys?
Answers
Answer:
7/11 are boys
Step-by-step explanation:
You add the total amount of students then put the number of boys in the numerator.
Brainliest please
Answer:
\(\frac{7}{11}\)
Step-by-step explanation:
Ratio
7:4
Boys = 7
4 = Girls
________
When solving ratios, we need to get the denominator of the fraction, which can be found by finding the total of students in the school. There are 7 boys and 4 girls, so add :
7 + 4
11
So there are 11 kids in total and 11 is our denominator. Since we know that 7 boys are in the school, we can put 7 as our numerator, therefore :
\(\frac{7}{11}\)
What is the slope of the line created by this equation?
Round your answer out to two decimal places.
8x+2y = 4
Help
Answers
Answer:
I think the answer will be:- m = -4 but I'm not sure.
Go step by step to reduce the radical.
Square Root 200
Answers
Answer:
10 root 2
Step-by-step explanation:
root 200 = root 2 × root 100 = 10 root 2
3 less than the quotient of a
number y and 4
Answers
Answer:
y ÷ 4 - 3
Step-by-step explanation:
Since it asks for the quotient of y and 4, quotient indicates that it is division, so those two are going to be divided. It also says 3 less than. Less than means subtraction.
A merchant has 1500 kg of sugar part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. The quantity sold at 18% profit is
Answers
Answer:
900 kg
Step-by-step explanation:
Let's assume the cost price (C.P.) of sugar is Rs. x per kg.
The total quantity of sugar is 1500 kg.
Let the quantity of sugar sold at 8% profit be represented by y kg.
The quantity of sugar sold at 18% profit would then be (1500 - y) kg.
Using the rule of alligation, we can set up the following proportion:
(8% profit) y kg
-------------- = ------
(18% profit) (1500 - y) kg
Simplifying the proportions, we find that the difference in percentages is 4% (18% - 14% = 4%) and 6% (14% - 8% = 6%).
The ratio of these differences is 2:3.
This means that for every 2 kg of sugar sold at 8% profit, 3 kg of sugar is sold at 18% profit.
Since y represents the quantity sold at 8% profit (2 kg), we can calculate the quantity sold at 18% profit (3 kg) as follows:
(2 kg) * (3/2) = 3 kg
Therefore, the quantity sold at 18% profit is 900 kg.
What is the measure of the exterior angle of the triangle? A. 23°B. 149°C. 180°D. 31°
Answers
Solution
The diagram below will be of help
From the image above
We know that the sum of angle in a triangle is 180 degrees
That is
\(\begin{gathered} 63+86+y=180 \\ 149+y=180 \\ y=180-149 \\ y=31^{\circ} \end{gathered}\)Now, to find x
We also know that the sum of angle in a straight line is 180 degrees
That is
\(y+x=180\)We now solve for x
\(\begin{gathered} x=180-y \\ x=180-31 \\ x=149^{\circ} \end{gathered}\)Therefore, the value of x = 149 degrees
Option B
What is the formula for finding circumference given the radius?
Answers
Answer:
\(C = 2\pi r\\\)
Step-by-step explanation:
\(Circumference = 2\times \pi \times r\)
I don’t get this question I need help
Answers
The result to the equation is x = 7.
To find the results of the equation √( 2x- 5) 4 = 1, we can break it step by step
Abate 4 from both sides of the equation
√( 2x- 5) = 1- 4
√( 2x- 5) = -3
Square both sides of the equation to exclude the square root
√( 2x- 5))² = (- 3)²
2x- 5 = 9
Add 5 to both sides of the equation
2x = 9 + 5
2x = 14
Divide both sides of the equation by 2
x = 14/2
x = 7
Thus, the result to the equation is x = 7.
Checking the extraneous result
Substituting x = 7 back into the original equation
√(2(7)-5)+4=1
√(14-5)+4=1
√9+4=1
3+4=1
7 = 1
This equation isn't true, which means that x = 7 is an extraneous result.
Learn more about Extraneous solution here:
https://brainly.com/question/28362830
#SPJ1
y = 1/3x -1
x-intercept (3,0)
How did they get this answer? Somebody please help
Answers
Here's how to do it:
Substitute y with zero:
0 = (1/3)x - 1
Add 1 to both sides:
1 = (1/3)x
Multiply both sides by 3:
3 = x
So the x-intercept of the line y = (1/3)x - 1 is (3,0). This means that the line crosses the x-axis at the point (3,0).
In conclusion, the x-intercept of the line y = (1/3)x - 1 is (3,0), which means that the line crosses the x-axis at the point (3,0).
Answer:
Step-by-step explanation:
x-intercept is where the line cuts the x-axis. That is, when y=0.
Substitute y=0 and we get:
\(0=\frac{1}{3} x-1\)
\(1=\frac{1}{3} x\)
\(x=3\)
So x-intercept is the point (3,0).
77= 7 tens 7 ones = 6 tens ____ ones
Answers
Answer:
= 6 tens 17 ones
Step-by-step explanation:
The fill in the blank is 17. Its like "borrowing" when you first learned to subtract. If you had 7 tens and now you only have 6 tens, throw those loose ones (10 of them) over into the ones with the 7 loose ones you already had. Now you have 17 ones. See image.
Answer:
6 tens 17 ones
Step-by-step explanation:
PLS HELP ME
Using the digits 1 - 9, at most one time each, create an improper fraction and a mixed number that are equivalent.
Answers
The mixed fractions and improper fractions are 4 1/3 and 13/ 3
What are fractions?Fractions are part of a whole.
Types of fractions include;
Mixed fractions having both a whole number and a proper fractionSimple fractionsProper fractionsImproper fractions having the numerator greater than the denominatorThe numbers from 1 - 9 are: 1, 2 , 3, 4, 5, 6, 7, 8, 9
Mixed fraction = 2 1/3
Improper fraction = 7/3
Thus, the mixed fractions and improper fractions are 4 1/3 and 13/ 3
Learn more about fractions here:
https://brainly.com/question/11562149
#SPJ1
2. For rectangle , m angle PLE=5x+2 and m angle NLE=3x . Determine the value of x, m angle PLE , and m angle NLE .
Answers
Answer:
hmmmmmm
Step-by-step explanation:
Answer:
CAN SOMEONE ACTUALLY SOLVE IT PLEASE
Step-by-step explanation:
Harper is starting a printing business. She purchases plain t-shirts for $5 dollars each and spends $150 for printing equipment She decides to sell printed shirts for $10 each. How many t-shirts does Harper need to sell so that the amount of money she spends to start her business and the amount of money she earns are the same.
Answers
Answer:
30
Step-by-step explanation:
150/5 = 30
30+30+30+30+30 = 150
Alex, Hans and Stan saved up some money to buy a tent for a camping trip İstan saved
60% of the price. Alex saved 40% of what was left of the price and Hans' share of the
price was €30. What was the price of the tent?
Answers
Answer:
I think its €125
Solve. Check the solution. t/8 = 15 *
Answers
Answer:
the answer is 15 I'm positive
What is the slope of the line represented by the equation y = 4/5x - 3?
-3
-4/5
4/5
3
Answers
Answer:
4/5 is the slope of the line represented by the equation y = 4/5x - 3