The data-set in this problem is classified as follows:
Numerical and univariate.
What are the classification of variables?The variables can be classified as categorical or numerical as follows:
Categorical: The possible values assumed by the variable are labels, such as yes/no, good/bad, and so on...Numerical: The values assumed by the variable are numbers.In the context of this problem, the minimum, the maximum and the quartiles of the variable all assume numeric values, hence the variable is classified as numerical.
From the text, the variable under study is the time spent on social media in a day, as a function of minutes. Since the output of the study is a single variable, the study is called univariate.
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Answer:
Numerical and univariate.
Step-by-step explanation:
Commute Time to Work The average commute to work (one way) is 25 minutes according to the 2005 American Community Survey. If we assume thatcommuting times are normally distributed and that the standard deviation is 6.1 minutes, find the probabilities. (b) The selected commuter spends less than 11 minutes commuting one way.P (x<11) =
mean: 25 minutes
standard deviation: 6.1 minutes
A 11 minutes commute time is 2.30 standard deviations away from the mean. In this case, we have, for a normal distribution:
[tex]P(x<11)=P(x<\mu-2.3\sigma)=0.0107[/tex]A customer recelves a discount on each purchase. If thecustomer's bill is $1,600 before the discount and the bill is $1,460after the discount what is the percent discount?O A) 8.8%B) 9.5%C) 11.4%D) 91.3%searchC
The customer's bill before the discount is $1600.
The customer's bill after the discount is $1460.
Determine the discount on the customer's bill.
[tex]\begin{gathered} D=1600-1460 \\ =140 \end{gathered}[/tex]The discount is applied on the customer's bill before the discount. Let the percent discount is d%.
Determine the discount percent on the customer bill.
[tex]\begin{gathered} \frac{d}{100}\cdot1600=140 \\ d\cdot16=140 \\ d=\frac{140}{16} \\ =8.75 \\ \approx8.8 \end{gathered}[/tex]So percent discount is 8.8%.
An object is traveling at a steady speed of 9 9/10 mi/h. How long will it take the object to travel 2 1/10 miles? First round to the nearest integer to find the estimated answer. Then find the exact answer.
Answer:
See below
Step-by-step explanation:
Distance / rate = time
2 1/10 mi / 9 9/10 mi/hr
21/10 / 99/10 = 21/99 hr = 12.73 minutes
ZERO hr if rounded to nearest integer hr
= 13 minutes as nearest integer minutes
exact is 21/99 hr = 7/33 hr
Morgan had $1,679 in her savings account. After one year, her balance increases by 26. How much does Morgan have in her account now?
Morgan had $1,679 in her savings account. After one year, her balance increases by 2%. How much does Morgan have in her account now?
Remember that
100%+2%=102%=102/100=1.02
so
Multiply the original amount by the factor 1.02
1,679*(1.02)=$1,712.58
answer is
$1,712.58A 2 1/2-pound box of frozen corn costs $1.65. How much does a 4-ounce serving cost?
Given data:
The given cost of 2 1/2 pound of box is $1.65.
The given expression can be written as,
[tex]\begin{gathered} 2\frac{1}{2}\text{ lb=1.65} \\ 2.5\text{ lb=1.65} \\ 1\text{ lb(}\frac{16\text{ ounce}}{1\text{ lb}})\text{ =0.66} \\ 16\text{ ounces=0.66} \\ \frac{1}{4}\times16\text{ ounces=}\frac{1}{4}\times\text{0.66} \\ 4\text{ ounces=0.165} \end{gathered}[/tex]Thus, the cost of 4 ounces is $0.165.
Solve in simplest form
3x(9/8)
Answer:
27x/8
Step-by-step explanation:
3*9/8
3x*9/8
27x/8
Pls help fast !!!!!!!!!!!
Answer: last one
Step-by-step explanation:
I'm not 100% sure but I would like to help you and I think it is. I say this because the 7 can't have a different outcome.
A carton of eggs contains 12 eggs. Each carton of eggs costs $1.89.A function, f(x), is written to represent the cost of purchasing x cartons of eggs.What is the practical domain for the function f(x)?all whole numbersall real numbersall whole numbers that are multiples of 12all positive integers
Given the information on the problem, we have the following function:
[tex]f(x)=1.89x[/tex]where 'x' represents the numer of cartons of eggs.
Notice that this is a real function, but it can only take integer values. Therefore, the practical domain of the function f(x) is positive integers
Solve the equation. Justify each step using the word bank provided. *Properties may be used more than once! Given Addition Property of Equality Subtraction Property of Equality Multiplication Property of Equality Division Property of Equality Distributive Property Combine Like Terms 2(x − 4) − 9 = 3(2x + 1) + 4
The result of the equation 2(x-4)-9 = 3(2x+1)+4 is x= -6
The equation is
2(x-4)-9 = 3(2x+1)+4
The distributive property states that multiplying the sum of two or more variables by a number will produce the same result as multiplying each variables individually by the number and then adding the products together.
2(x-4)-9 = 3(2x+1)+4
Apply distributive property in the equation
2x-8-9 = 6x+3+4
Add the like terms in the equation
2x-17 = 6x+7
Rearrange the terms and combine the like terms in one terms
2x-6x = 7+17
Combine the like terms
-4x = 24
x = 24/-4
x = -6
Hence, the result of the equation 2(x-4)-9 = 3(2x+1)+4 is x= -6
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find the exact area of a sector if the radius of the circle is 4 cm, and the angle of the sector is π radian.
Area of sector = 8π cm²
Explanation:For angle in degrees:
Area of sector = θ/360 × πr²
For angle in radians:
Area of sector = 1/2 r²θ
radius = 4 cm
angle of the sector = π radian
Area of sector = 1/2 × (4)² × π = 16/2 × π
Area of sector = 8π cm²
Andrew buys 975 green peppers and 1,250
hot chili peppers. He uses all of those
peppers to make two types of sauce.
part A
Write a system of equations that shows how
Andrew can use the peppers to make x pints
of Sauce I and y pints of Sauce II.
The system of equation is given by
x + y = 975
x + y = 1250
What is system of equation?
Systems of equations are sets of equations where the solution is the intersecting point (s) between the equations. Most of the systems of equations you see in algebra are sets of two linear equations in the standard form Ax + By = C.
Andrew buys :
green peppers = 975
hot chilli peppers = 1,250
Part A
He uses green peppers (975) to make,
x pints of Sauce I
y pints of Sauce II
So, equation will be,
=> x + y = 975 .........(i)
Simillarly he uses hot chilli peppers (1,250) to make,
x pints of Sauce I
y pints of Sauce II
So, 2nd equation will be,
=> x + y = 1,250 .........(ii)
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12 Bernadette has recently opened her own soup store. It costs her $360 a month plus $2.50 for each bowl of soup she makes. Bernadette brings in $5.50 on each bowl of soup she sells. How many bowls of soup would Bernadette need to sell to make money each month? Explain.
Answer:
So, to make money each month, Bernadette would need to sell at least 121 bowls of soup.
Step-by-step explanation:
Cost function:
Has a fixed cost($360), and a variable cost($2.5 per bowl). So the cost of each making b bowls is given by:
C(b) = 360 + 2.5b
Profit function:
She earns $5.5 for each bowl of soup she sells. So the earnings of selling b bowls are given by:
P(b) = 5.5b
How many bowls of soup would Bernadette need to sell to make money each month?
Bernadette will make money if the profit is higher than the cost, that is:
P(b) > C(b)
Then
5.5b > 360 + 2.5b
5.5b - 2.5b > 360
3b > 360
b > 360/3
b > 120
So, to make money each month, Bernadette would need to sell at least 121 bowls of soup.
The ratio of students who play video games to those who don't play video games if 7:2. If a class has 126 students that play video games, how many students do not play video games?
Answer:
98 students play videogames
28 students dont play videogames
Step-by-step explanation:
we have to make n equation using 7:2=126 so we are going to intaduce x witch will give us 7x+2x=126
9x=126 then we divide it with 9 witch gives us x=14 then we multiply x by 7 and agen x by 2
Drag the tiles to the boxes to form correct pairs.Consider functions fand g.(1) = 1 - 12g(x) = VII – 45Evaluate each combined function, and match it to the corresponding value.0VISV3 - 3-303(9.5) (2)(+) (2)(9 - 1)(-1)(-1)
We have the following functions:
[tex]\begin{gathered} f(x)=1-x^2, \\ g(x)=\sqrt[]{11-4x}\text{.} \end{gathered}[/tex]1) We evaluate (g · f)(2):
[tex](g\cdot f)(2)=g(2)\cdot f(2)=\sqrt[]{11-4\cdot2})\cdot(1-2^2)=-3\cdot\sqrt[]{3}\text{.}[/tex]2) We evaluate (g + f)(2):
[tex](g+f)(2)=g(2)+f(2)=(\sqrt[]{11-4\cdot2})+(1-2^2)=\sqrt[]{3}-3.[/tex]3) We evaluate (g - f)(-1):
[tex](g-f)(-1)=g(-1)-f(-1)=\sqrt[]{11-4\cdot(-1)}-(1-(-1)^2)=\sqrt[]{15}\text{.}[/tex]4) We evaluate (f / g)(-1):
[tex](\frac{f}{g})(-1)=\frac{f(-1)}{g(-1)}=\frac{(1-(-1)^2)}{\sqrt[]{11-4\cdot(-1)}}=\frac{0}{4}=0.[/tex]Answers
[tex]\begin{gathered} (g\cdot f)(2)=-3\cdot\sqrt[]{3} \\ (g+f)(2)=\sqrt[]{3}-3 \\ (g-f)(-1)=\sqrt[]{15} \\ (\frac{f}{g})(-1)=0 \end{gathered}[/tex]Kathleen and ednardo both ran from the park entrance along the loop Kathleen started walking from the park entrance and gets a five mile Head Start of aarona the graph shows how far they have both traveled
Answer:
75
Step-by-step explanation:
They meet up when their distance traveled is the same (in other words, when the graphs intersect).
The graphs intersect x=75.
Cann you prove the two triangles below to be congruent, if so which postulate did you use to prove them congruent
The angles shown in each triangle are congruent. Then, by SAS postulate, the triangles are congruent
Find the greatest common factor.6m, 2mWrite your answer as a constant times a product of single variables raised to exponents.
For 6m and 2m the comun factor corresponds to 2m, because 2 can divide 6 and 2 and m appears on both expressions with the same exponent.
all you need is on the photo please just give me the answer don't do step-by-step is so confusing is homework
You have the following function:
f(x) = x² - x
- In order to determine the vertex of the function, consider that for the general form of a quadratic function:
f(x) = ax² + bx + c
the value of x at the vertex is:
x = -b/2a
for the given function you have a = 1, b = -1, c =0:
x = -(-1)/2(1) = 1/2 = 0.5
next, replace the previous value of x into the function:
f(1/2) = (1/2)² - (1/2) = 1/4 - 1/2 = -1/4 = -0.25
Hence, the vertex is (0.5 , -0.25)
- The axis of symmetry is the value of x atthe vertex:
x = 0.5
- The x-intercepts are the zeros of the function:
x² - x = 0 by factorizing
x(x - 1) = 0
Then, the zeros are:
x =0
x = 1
Hence, the x-intercepts are x=0 and x=1
- Due to the coefficient a is positive and the term ax² is the dominant term, this curve has a minimum. This minimum is the vertex (0.5 , -0.25)
- The minimum value of the function is -0.25
- The y-intercept is the value of y when x=0:
f(0) = 0² - 0 = 0
Suppose that the function g is defined, for all real numbers, as follows.
Find g (-2), g (1), and g (4).
The values of the functions, when g is defined for all real numbers is as follows:
g(-2) = -3
g(1) = 3
g(4) = 0
Given, the function g is defined for all real numbers.
g(x) = { 1x²/4 - 4 if x≠1
3 if x=1 }
g(-2):
here, x = -2
where x ≠ 1
therefore, g(-2) = 1x²/4 - 4
substitute x as -2
g(-2) = 1(-2)²/4 - 4
g(-2) = 4/4 - 4
g(-2) = 1 - 4
g(-2) = -3
g(1):
here, x = 1
where x = 1
therefore, g(1) = 3
g(4):
here, x = 4
where x ≠ 1
therefore, g(4) = 1x²/4 - 4
substitute x as 4
g(4) = 1(4)²/4 - 4
g(-2) = 16/4 - 4
g(-2) = 4 - 4
g(-2) = 0
Hence we get the values of g(-2), g(1) and g(4) as -3,3 and 0 respectively.
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How do I find the missing angles marked by letters in this parallelogram
In a parallelogram,
i) Opposite angles are equal i.e
[tex]\begin{gathered} d=f \\ e=110^0^{} \end{gathered}[/tex]ii) Consecutive angles are supplementary i.e
[tex]110^0+f=180^0\text{ (Consecutive angles of a parallelogram are equal)}[/tex]To find f, collect like terms
[tex]\begin{gathered} 110^0+f=180^0 \\ f=180^0-110^0=70^0 \\ f=70^0 \end{gathered}[/tex]Since, d = f,
Thus,
[tex]\begin{gathered} d=f=70^0 \\ d=70^0 \end{gathered}[/tex]Hence, the missing angles are d = f = 70° and e = 110°
EM bisects ZDEF and mZDEF = 83.6°. Find mZDEM and mZMEF. mZDEM mZMEF
Answer:
[tex]\begin{gathered} m\angle DEM=41.8^{\circ} \\ m\angle MEF=41.8^{\circ} \end{gathered}[/tex]Explanation:
See the below image;
From the above image, we can see that line EM is the bisector of angle DEF and we know that an angle bisector always splits an angle into two equal angles.
Given m[tex]\begin{gathered} m\angle DEM=\frac{83.6}{2}=41.8^{\circ} \\ m\angle MEF=\frac{83.6}{2}=41.8^{\circ} \end{gathered}[/tex]
The mean number of blue m&m's in a fun size bag is 3.4 with a standard deviation of .2. What is the probability of getting more than 4 blue
m&m's in a bag? Write your answer as a percentage. Do NOT include the percentage sign
If the mean number of blue m&m's in a fun size bag is 3.4 with a standard deviation of .2. The probability of getting more than 4 blue m&m's in a bag is 0.00135.
How to determine the probability?Given data:
Mean = 3.4
Standard deviation = .2
Now let find or determine the z-score before finding the probability of getting more than 4 blue
Z = 4 blue - mean / standard deviation
Hence,
Z = 4 - 3.4 / .2
Z = 0.6 / .2
Z = 3
The probability was determine using the normal distribution table
P(x > 4) = P( Z=3)
= 0.00135
Therefore we can conclude that the probability is 0.00135.
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The regression equation y= - 0.434x+72.21 approximates the percent of people in an audience who finish watching a documentary, y, given the length of the film in minutes, x.
What percentage is the best prediction for the percent of people in an audience who will finish watching a documentary that is 27 minutes long? Round your answer to the hundredths place
Using the regression equation we can estimate that 60.49% of people will finish the documentary.
Regression analysis is a group of statistical procedures used in statistical modelling to determine the associations between a regression model and one or more relationship between the independent variable.
Y is the variable (the variable that is plotted on the Y axis), X is the independent variable (i.e., it is displayed on the X axis), b is the slope of the line, and an is the y-intercept.The equation has the form Y= a + bX.The equation is given as Y= - 0.434X+72.21
At X=27 , the value of Y can be estimated as :
Y = -0.434 × 27 +72.21
or, Y = 60.492
or, Y ≈ 60.49
Therefore 60.49 % is the best prediction of people will watch the documentary completely.
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You need to arrange five of your favorite books along a small shelf. How many different ways can you arrange the books, assuming that the order of the booksmakes a difference to you?
For the first place in the shlef you have 5 possibilities to choose, for the second place you have 4 possibilities, for the third you have three possibilities and so on. This means that we can find the number of ways to arrange the books with a factorial, that is:
[tex]5!=5\cdot4\cdot3\cdot2\cdot1=120[/tex]Therefore, there are 120 ways to arrange your books in the shelf.
What is the area in square feet of the lawn ?
Given:
Find-:
Area of shape
Explanation-:
The area of a rectangle is:
[tex]\text{ Area }=\text{ Length }\times\text{ Width}[/tex]The shape is:
For the first region:
[tex]\begin{gathered} \text{ Length }=80 \\ \\ \text{ Width }=40 \end{gathered}[/tex]The area of the first region is:
[tex]\begin{gathered} \text{ Area }=\text{ Length}\times\text{ Width} \\ \\ =80\times40 \\ \\ =3200\text{ ft}^2 \end{gathered}[/tex]The area of the second region is:
[tex]\begin{gathered} \text{ Length }=80-60 \\ \\ \text{ Length }=20 \\ \\ \text{ Width }=60 \end{gathered}[/tex]The area of the second region is:
[tex]\begin{gathered} \text{ Area }=\text{ Length}\times\text{ Width} \\ \\ \text{ Area }=20\times60 \\ \\ \text{ Area }=1200\text{ ft}^2 \end{gathered}[/tex]The total area of the lawn is:
[tex]\begin{gathered} \text{ Area }=3200\text{ ft}^2+1200\text{ ft}^2 \\ \\ \text{ Area }=4400\text{ ft}^2 \end{gathered}[/tex]The area of lawn is 4400 ft²
I got 190m but I need someone to check pls
Step 1: Write out the formula for the volume V of a rectangular based pyramid with height h base length l and base width w:
[tex]V=l\cdot w\cdot h[/tex]Step 2: Write out the given values and substitue them into the formula to find the volume:
From the image, we can see that:
[tex]l=12m,w=5m,h=9.5m[/tex]Therefore,
[tex]V=(12)\cdot(5)\cdot(9.5)=570m^3[/tex]Hence the volume of the pyramid is 570m³
Answer:
190 m^3
Step-by-step explanation:
the volume of a pyramid is b * h * 1/3
the base is the bottom
5 * 12
that is 60
60 * the height * 1/3
60 * 9.5 * 1/3
we can first do 60 * 1/3
that is 20
20 * 9.5 = 190
that is the answer
youre correct!
Bryson's cat had six kittens this summer. Each kitten weighs 5 1/3 ounces. How much did all the kittens weigh together?
Each kitten weighs 5 1/3 ounces. Converting this weight to improper fraction, it becomes
16/3 ounces
Since the total number of kittens is 6, the weight of all the kittens is
16/3 * 6 = 32 ounces
The total weight is 32 ounces
What is a formula for the nth term of the given sequence? Also how do I find it with further questions
option (D) aₙ = 300 (5 / 3)¹⁻ⁿ is a formula for the nth term of the given sequence.
The sequence given is:
300, 180, 108
The initial term = a = 300
We will first calculate the common ratio between the terms:
Common ratio = r
r = 180 / 300
r = 18 / 30
r = 3 / 5
Also,
108 / 180 = 3 / 5
Now, the formula for the nth term is given by:
aₙ = a rⁿ⁻¹
Substitute the values:
aₙ = 300 (3 / 5)ⁿ⁻¹
which can also be written as:
aₙ = 300 (5 / 3)¹⁻ⁿ
Therefore, we get that, option (D) aₙ = 300 (5 / 3)¹⁻ⁿ is a formula for the nth term of the given sequence.
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I need help with this practice problem solving I will send two additional pictures that go with this, one is the rest of the question and the other is the answer options
Given:
[tex]\frac{\sec x\sin x}{\tan x+\cot x}=\sin^2x[/tex]Find-: Prove the trigonometric identity.
Sol:
Use some trigonometric formula:
[tex]\begin{gathered} \sec x=\frac{1}{\cos x} \\ \\ \tan x=\frac{\sin x}{\cos x} \\ \\ \cot x=\frac{\cos x}{\sin x} \end{gathered}[/tex]So,
[tex]\begin{gathered} \frac{\sec x\sin x}{\tan x+\cot x}=\sin^2x \\ \\ \frac{\frac{1}{\cos x}\cdot\sin x}{\frac{\sin x}{\cos x}+\frac{\cos x}{\sin x}}.................\text{ First option } \end{gathered}[/tex]Then,
[tex]=\frac{\frac{\sin x}{\cos x}}{\frac{\sin^2x}{\sin x\cos x}+\frac{\cos^2x}{\sin x\cos}}................................(\text{ Second option\rparen}[/tex][tex]=\frac{\frac{\sin x}{\cos x}}{\frac{\sin^2x+\cos^2x}{\sin x\cos x}}...........................(\text{ Third option\rparen}[/tex]Solve the identity then,
[tex]=\frac{\frac{\sin x}{\cos x}}{\frac{1}{\sin x\cos x}}..................(\text{ Fourth option\rparen}[/tex]Here, use the formula:
[tex]\sin^2x+\cos^2x=1[/tex]Then,
[tex]\begin{gathered} =\frac{\sin x}{\cos x}\sin x\cos x..........(\text{ Fifth option\rparen} \\ \\ =\sin^2x \end{gathered}[/tex]If Ariana writes 6 pages in 2 minutes in a 50-page novel, what is the constant of proportionality, unit rate in one minute?
Let k be the constant of proportionality
Let p be the number of pages
Let t be the time taken
P ∝ t
p = kt
K = p/t
k = 6/2 = 3/1
The unit rate is 3 pages in one minute
