Explanation:
If the data wasn't sorted, then the first step would be to arrange the elements from smallest to largest. However, that is already done for us.
The middle most value in the set {15, 19, 20, 25, 31, 38, 41} is 25 because there are three values below it {15,19,20} and three values above it {31,38,41}
Focus on the lower half {15,19,20} and note the middle of this subset is element 19. This is the value of Q1 or the first quartile.
The third quartile Q3 is 38 because the middle of the upper half data set {31,38,41} is 38.
We now subtract the values of Q3 = 38 and Q1 = 19 to get the interquartile range (IQR)
IQR = Q3 - Q1 = 38 - 19 = 19
Answer:
19
Step-by-step explanation:
Hope this helps and I got it right on the quiz on edge
(-3, 5) is located in _____.
A.Quadrant I
B.Quadrant II
C.Quadrant III
D.Quadrant IV
Find the amplitude and period of the graph y=4 sin πθ
Answer:
The amplitude is 4 and the period is 2
Step-by-step explanation:
In the equation y = A sin (B x)
A is the amplitude, where the amplitude is the height from highest to lowest points and divide the answer by 2The period is [tex]\frac{2\pi }{B}[/tex] , where the period is the distance from one peak to the next peak∵ The equation is y = 4 sin(πФ)
- Compare it with form above
∴ A = 4 and B = π
∵ A is the amplitude
∴ The amplitude is 4
∵ Period = [tex]\frac{2\pi }{B}[/tex]
∴ Period = [tex]\frac{2\pi }{\pi }[/tex]
∴ Period = 2
∴ The period is 2
A group of adults plus one child attend a movie at Cineplex 15. Tickets cost $9 for adults and $6 for children. The total cost for the movie is $78. Write an equation to find the number of adults in the group.
I had 1 apple and then I ate it. How many do I have now?
0
1-1=0
So u have 1 then you take one away so it will get u 0 apples left
Answer:
0 apples in total,
Step-by-step explanation:
You ate the apple, so most would consider that you have 0 apples left.
one minus one is equal to zero in this case.
x+4y=16
5x+4y=0
need to solve systems of equations by graphing
Answer:
Step-by-step explanation:
(-4,5)
x= -4 y=5
. Lola sells jewelry. She sold 6 necklaces.She sells each necklace for $9.She spent $14 on supplies to make the necklaces. Write an expression that shows the amount of money Lola earned after paying for the supplies? *
Answer:
(6 necklaces x $9 per necklace) - $14 spent on supplies = profit for Lola
or (6 x 9) - 14 = profit for Lola
The actual profit is $40.
Step-by-step explanation:
First, you need to calculate how much money Lola made from selling jewelry. She sold 6 necklaces, and each one was sold for $9, so you can calculate the total sale proceeds by multiplying 6 x $9 = $54.
However, you then have to subtract the cost of supplies that Lola had to buy to make the necklaces, in order to find out how much money Lola actually made. Therefore, subtract $14 from the calculation above.
Therefore the final expression is: (6 x 9) - 14 = profit
Make sure to take into account order of operations when solving the equation (it's important to multiply 6x9 before you subtract out the 14). The actual profit for Lola comes out to $40.
Which formula gives the x-coordinates of the maximum values for y = cos(x)?
k(pi) for any integer k
k(pi) for k= 0, +/-2, +/-4...
k(pi)/2 for any positive integer k
k(pi)/2 for k= k= 0, +/-2, +/-4...
Answer:
the correct answer is B i got it right on my test
Step-by-step explanation:
Answer:
The answer is B) k(pi) for k= 0, +/-2, +/-4,...
Step-by-step explanation:
edg
please help!! urgent
Answer:
D, 342 meters
Step-by-step explanation:
We can use the definition of sines to solve the problem. Remember, sine = opposite leg over the hypotenuse of the triangle.
[tex]sin(<Q)= \frac{RS}{QR} \\[/tex]
Then, we can substitute QR for 1,000 and [tex]<Q[/tex] for 20 degrees and solve like so:
[tex]sin(20) = \frac{RS}{1,000}[/tex]
[tex]RS = 1000 (sin(20))\\\ RS = 1000(0.342)\\\\RS= 342.0201[/tex]
Rounding that number, we get 342 meters. Hope this made sense!
Answer: D. 342 m
Step-by-step explanation:
The given triangle is a right angle triangle since angle S is 90°.
From the given right angle triangle,
QR represents the hypotenuse of the right angle triangle.
With m∠Q as the reference angle,
QS represents the adjacent side of the right angle triangle.
RS represents the opposite side of the right angle triangle.
To determine RS, we would apply
the Sine trigonometric ratio.
Sin θ, = opposite side/hypotenuse. Therefore,
Sin 20 = RS/1000
RS = 1000Sin20 = 1000 × 0.342
RS = 342 m
What's the definition of statistics?
Answer:
statistics is defined as:
the branch of mathematics dealing with data collection, organization, analysis, interpretation and presentation.
Final answer:
Statistics is a mathematical discipline focused on data collection, analysis, interpretation, and presentation. It includes both the process of dealing with numerical data and the resulting numerical facts used to make decisions. The field consists of descriptive statistics and statistical inference, which help understand and compare data for informed decision-making.
Explanation:
Statistics is a branch of mathematics that deals with the collection, analysis, interpretation, and presentation of numerical data. It encompasses the entire process from gathering the data to drawing conclusions based on the numerical information obtained. Statistics can also refer to the numerical facts themselves, which are derived from these processes. The field is divided into two key areas: descriptive statistics, which summarizes data from a sample using indexes such as mean or standard deviation, and statistical inference, which makes predictions about a population based on a sample of data.
Statistics are not confined to mere numbers; they represent a comparison and understanding of numerical data. These comparisons help us make informed decisions in various fields, from public policy to medicine. For example, statistics can tell us the percentage increase in a population over a decade, enabling policymakers to plan resources accordingly. Statistics is integral to our daily lives, even though many may not realize its pervasive influence.
Alyssa is an ecologist who studies the change in the fox population of the Arctic circle over time. She observed that the population loses \dfrac{1}{18} 18 1 start fraction, 1, divided by, 18, end fraction of its size every 222 months. The population of foxes can be modeled by a function, PPP, which depends on the amount of time, ttt (in months). When Alyssa began the study, she observed that there were 185{,}000185,000185, comma, 000 foxes in the Arctic circle. Write a function that models the population of the foxes ttt months since the beginning of Alyssa's study.
To model the population of foxes t months since the beginning of Alyssa's study, we can use the equation P(t) = P(0) - (1/18t), where P(0) is the initial population of 185,000 foxes.
Explanation:To write a function that models the population of foxes t months since the beginning of Alyssa's study, we need to determine the rate at which the population decreases over time. Given that the population loses 1/18 of its size every 22 months, we can use this information to develop an equation. Let P(t) represent the population of foxes at time t, and let P(0) be the initial population of 185,000 foxes.
Since the population loses 1/18 of its size every 22 months, the rate of decrease can be calculated as 1/18 per 22 months. This can be written as -1/18 per month or -1/18t per month. Hence, the equation that models the population is P(t) = P(0) - (1/18t).
what is the area of a square if the side is 2cm
Answer:
The area of the square if the side is 2cm, It would be 4cm, because 2 times 2 is 4. Hope this helps!
Step-by-step explanation:
You would do 2 times 2 to get 4cm.
Answer:
[tex]4cm^{2}[/tex]
Step-by-step explanation:
The formula for working out the area of a square/rectangle is Length multiplied by the width. To work this out you would simply multiply 2 by 2, which gives you 4. This is because a square would have 4 identical sides and that the formula is length multiplied by the width.
1) Multiply 2 by 2.
[tex]2*2=4cm^{2}[/tex]
Y/8=5 y= ? Please help me
Answer: y Y/40 should be your answer
Answer:
Y=40
Step-by-step explanation:
40/8=5
In a survey of 20 college students, it was found that 9 were taking an English class, 3 were taking a math class, and 2 were taking both English and Math. How many students were taking a math class only? Please show work.
A) 10
B) 1
C) 13
D) 11
Answer:
1
Step-by-step explanation:
3-2=1
Answer:
The answer is B) 1.
Step-by-step explanation:
Let’s use a Venn diagram to solve this problem.
We know that 9 students are taking an English class and 3 are taking a math class. We also know that 2 students are taking both classes. Therefore, we can fill in the Venn diagram as shown above.
To find the number of students taking a math class only, we need to subtract the number of students taking both classes from the total number of students taking a math class. That is:
Math only = Total Math - Both
Math only = 3 - 2
Math only = 1
Therefore, 1 student is taking a math class only.
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Can you guys please help me out
Answer:about 54%
Step-by-step explanation:
Three coins are tossed in the air, one at a time. What is the probability that the third coin will be heads?
Answer:
1/2
Step-by-step explanation:
We only care about the third coin
we could get heads or tails on the third flip
P (third coin will be heads) = outcome heads / total
=1/2
Answer:
½
Step-by-step explanation:
Trials are independent
If the coin is unbiased,
P(T) = P(H) = ½ for every trial
Find the mean and the median of the data set: 9, 7, 7, 4, 18 , 8, 5, 2,
I need major help I know it’s not 2, 1, and .25 for sure please help
Answer:
a = 9
b = 3
c = 1
Step-by-step explanation:
hope it helps
What is the approximate difference in tenths between
10 and
15?
sqrt 10 = 3.16
sqrt 15 = 3.87
So the difference would be 0.7
Answer:
0.7
Step-by-step explanation:
The measure of central angle RST is radians. What is the area of the shaded sector? 4Pi units squared
8Pi units squared
16Pi units squared
20Pi units squared
Answer:
"[tex]8\pi[/tex] units squared"
Step-by-step explanation:
The image of the circle is attached.
The shaded area of the circle is basically HALF of the whole circle. If we can get the area of the circle, we will halve it, to get our answer for area of shaded region.
Area of circle is given as:
[tex]A=\pi r^2[/tex]
Where
A is area
r is the radius
Looking at the pic, the radius is "4", so we substitute and find area of circle:
[tex]A=\pi r^2\\A=\pi (4)^2\\A=\pi (16)\\A=16\pi[/tex]
THe shaded area is HALF of that, so:
Area of Shaded = [tex]\frac{16\pi}{2}=8\pi[/tex] sq. units.
Answer is "[tex]8\pi[/tex] units squared"
Which of these best describes π?
A>The ratio of the radius of a circle to its diameter
b>The ratio of the circumference of a circle to its diameter
c>The square root of the area of a circle
D>The radius of a circle times 3.14
Answer:
B-The ratio of the circumference of a circle to it's diameter
The solution is Option B.
The ratio of the circumference of a circle to its diameter is called π
What is a Circle?A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “center”. Every line that passes through the circle forms the line of reflection symmetry. Also, the circle has rotational symmetry around the center for every angle
The circumference of circle = 2πr
The area of the circle = πr²
where r is the radius of the circle
The standard form of a circle is
( x - h )² + ( y - k )² = r²,
where r is the radius of the circle and (h,k) is the center of the circle.
Given data ,
Let the radius of the circle be represented as r
So , the diameter of the circle d = 2r
Now , the circumference of the circle C = 2πr
And , ratio of the circumference of a circle to its diameter is
Substituting the values in the equation , we get
C / d = 2πr / 2r
On simplifying the equation , we get
C / d = π
Therefore , the ratio of circumference to diameter is π
Hence , the equation is solved
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Does the rule y= -3(3)x represent a linear or an exponential function?
Answer:
There's no exponent, so this is a linear function.
Step-by-step explanation:
We can simplify:
y = -3(3)x
y = -9x
Here we can see this is simply linear: there is just an x^1, and no other exponent.
Can someone help me with this question
There is a rule for functions:
One input(x-value) can only have one output(y-value).
If one input has more than one output, it's not a function.
(This doesn't apply to outputs, one output can have more than one input and still be a function)
Option 1: It is not a function because the inputs 9 and 10 have more than one output
Option 2: It is not a function because the input 3 has more than one output
Option 3: It is a function because each input has only one output
Option 4: It is not a function because the input 5 has more than one output
PLZ HELP SOS!!!!!!!!
solve for x
thank you!!!!!!!!!!
Answer:
23. x = 11.1 // 24. x = 21.4
Step-by-step explanation:
23.
Observe which sides are known and needed. 15 is the hypotenuse and x is the adjacent side. The trigonometric function that connects both the hypotenuse and the adjacent side is cosine. Using the degree, set up the equation as so: cos(42) = x/15. (Because cosine is adjacent over hypotenuse, x is over 15). Isolate x to solve for it by multiplying both sides by 15. cos(42) * 15 is 11.1
24.
Observe which sides are known and needed. x is the hypotenuse and 11 is the opposite side. The trigonometric function that connects both the hypotenuse and the opposite side is sine. Using the degree, set up the equation as so: sin(31) = 11/x. (Because sine is opposite over hypotenuse, 11 is over x). Isolate x to solve for it by multiplying both sides by x and then dividing both sides by sin(31). 11 divided by sin(31) is 21.4
Help please!
Image Attached
Answer:
97.92m
Step-by-step explanation:
132.65-34.73=97.92
It should be the answer
Sorry if its wrong
The manager at the local auto shop has found that the probability that a car brought into the shop requires an oil change is 0.83, the probability that a car brought into the shop requires brake repair is 0.17, and the probability that a car requires both an oil change and brake repair is 0.15. For a car brought into the shop, determine the probability that the car will require an oil change or brake repair.
Answer:
0.85
Step-by-step explanation:
Given two events A and B, the probability that either A or B occurs is given by:
[tex]p(A\cup B) = p(A)+p(B)-p(A\cap B)[/tex]
where
[tex]p(A)[/tex] the probability that A occurs
[tex]p(B)[/tex] is the probability that B occurs
[tex]p(A\cap B)[/tex] is the probability that both A and B occur at the same time
In this problem, we know the following facts:
[tex]p(o) = 0.83[/tex] is the probability that the car requires an oil change
[tex]p(b)=0.17[/tex] is the probability that the car requires a brake repair
[tex]p(o\cap b) = 0.15[/tex] is the probability that the car requires both an oil change and brake repair
Therefore, the probability that either o (car requiring oil change) or b (car requiring brake repait) occur is:
[tex]p(o\cup b)=p(o)+p(b)-p(o\cap b)=0.83+0.17-0.15 = 0.85[/tex]
The circle below has a center H. Suppose that m FG=42. Find the following.
The measure of angle FHG = 42 degrees. This is the same as the arc length.
The measure of angle FEG = 21 degrees. This is half the value of the arc length.
The measure of angles are
[tex]m < FHG= 42\\m < FEG= 21 \\[/tex]
Central angle :Central angle is equal to intercepted arc.
Also, inscribed angle is equal to half of the intercepted arc.
From the given diagram ,
Central angle is angle FHG.
Given that measure of Arc FG = 42 degrees
Central angle = intercepted arc
Central angle is same as intercepted arc.
[tex]m < FHG= m (arc FG)\\m < FHG= 42[/tex]
Inscribed angle is equal to half of the intercepted arc.
To find inscribed angle , we divide the intercepted arc by 2.
[tex]m < FEG=\frac{1}{2} (arc FG)\\m < FEG=\frac{1}{2} (42)\\m < FEG= 21[/tex]
The following angles are
[tex]m < FHG= 42\\m < FEG= 21 \\[/tex]
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A teen magazine began its circulation of 500,000 in its first year. Since then, the circulation has increased an average of 33,388 per year. Suppose that the magazine began in 1944, and the trend continues. In what year will the circulation reach 3,000,000? Suppose that the magazine began in 2000, and the trend continues. What is the circulation in 2006? Show work. PLEASE HELP! NOBODY IS ANSWERING MY QUESTIONS!
Answer:
Step-by-step explanation:
First subtract 3000000 and 50000, which equals 2500000.
Then divide 2500000 and 33388, in order to find the number of years, which equals: 74.877201.
Add 74.877201 to 1944, to find out what year the circulation will reach 3 million, the answer is 2018.877. Round up to the nearest year, so 2019.
In order to find the circulation in 2006, first subtract 2006 and 1944, which equals 62 years, then multiply 62 years by 33388 , which equals 2070056. Add 500000 to 2070056. The answer is 2570056.
Lita has a coin with heads on one side and tails on the other side. She is going to flip it in the air three times. What is the probability of the coin landing tails up on the first flip and heads up twice on the last two flips? P(Tails, then heads, then heads) Write as a simplified fraction.
Answer:
The probability is 1/8
Step-by-step explanation:
In this question, we are tasked with calculating that if a coin is flipped three times, we have the outcome in the question; THH
Now before we go on to calculate this probability, we need to understand some technicalities. Flipping a coin can only result into two outcomes as there are only two sides of a coin. These are the head and the tail. What this means is that if a coin is flipped, we should only expect landing on the head and on the tail.
Now these opposite sides have equal probability. This means the probability of landing on the head = probability of landing on the tail. These probabilities are equal as they are the only two options we have. Hence, the probabilities are 1/2 each
Hence, P(H) = P(T) = 1/2
Now, we proceed to calculating the probability of HTT
this mathematically means P(H) * P(T) * P(T) = 1/2 * 1/2 * 1/2 = 1/8
Answer:
1/8
Step-by-step explanation:
Jason is entering a weight lifting contest. Gurrently, his maximum bench press weight is 105 pounds. If he increases the weight by 7 pounds each week, What is the maximum weight he be able to bench press after 13 weeks?
Answer:
196 lbs is the maximum weight.
Step-by-step explanation:
7 × 13 = 91 lbs (this is the amount he added by the 13th week)
91 + 105 = 196 lbs (this is the amount he added and the amount he had. giving us the finished product.)
Calculate Jason's maximum bench press weight after 13 weeks with a weekly increase of 7 pounds. Jason will be able to bench press a maximum weight of 196 pounds.
Jason's maximum bench press weight: 105 pounds
Weekly increase: 7 pounds
Number of weeks: 13
To calculate the maximum weight after 13 weeks:
First week: 105 + 7 = 112 pounds
Second week: 112 + 7 = 119 pounds
Continue this pattern for 13 weeks.
Result: After 13 weeks, Jason will be able to bench press a maximum weight of 196 pounds.
What is the volume of the pyramid?
12StartRoot 3 EndRoot cm3
16StartRoot 3 EndRoot cm3
24StartRoot 3 EndRoot cm3
32StartRoot 3 EndRoot cm3
Answer:
[tex]16\sqrt{3}[/tex] [tex]cm^{3}[/tex]
Step-by-step explanation:
I think your question missed key information, allow me to add in and hope it will fit the orginal one. Please have a look at the attached photo,
A solid oblique pyramid has an equilateral triangle as a base with an edge length of 4StartRoot 3 EndRoot cm and an area of 12StartRoot 3 EndRoot cm2.
What is the volume of the pyramid?
My answer:
As we know, The volume of a pyramid = [tex]\frac{1}{3}[/tex]base area × its height
Given:
Side lenght of the base is; [tex]4\sqrt{3} cm[/tex]=> The area of the base is [tex]12\sqrt{3}[/tex] [tex]cm^{2}[/tex]
In Δ ACB measure of angle ACB is 90° and m∠ CAB is 30°We use: [tex]tan(30) = \frac{BC}{AC}[/tex]
<=> BC = [tex]4\sqrt{3}*tan(30)[/tex]
= 4 cm
And BC is the height of the the pyramid
=> The volume of a pyramid = [tex]\frac{1}{3}[/tex] [tex]12\sqrt{3}[/tex] [tex]cm^{2}[/tex] * 4 cm
= [tex]16\sqrt{3}[/tex] [tex]cm^{3}[/tex]