the boxplot shows the fuel economy ratings for 67 subcompact cars with the same model year. some summary statistics are also provided. the extreme outlier is an electric car whose electricity usage is equivalent to 112 miles per gallon. if that electric car is removed from the data set, how will the standard deviation be affected? the iqr?
Removing the electric car from the data set will reduce the standard deviation as the extreme value of 112 mpg is taken out, resulting in a decrease in the spread of the data. The interquartile range (IQR) will also be affected as the extreme outlier is taken out, will decrease the spread of the data in the boxplot.
The electric car with a rating equivalent to 112 miles per gallon is an extreme outlier, which means it is very far from the rest of the data. Therefore, removing this outlier from the data set will decrease the variability and, consequently, decrease the standard deviation. The extreme outlier with the rating equivalent to 112 miles per gallon is outside of the whiskers of the boxplot, which means it is beyond the range of the middle 50% of the data. Therefore, removing this outlier from the data set will decrease the spread of the data in the boxplot and, consequently, decrease the IQR.
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BRAINLIEST
Solve for X. Round to the nearest tenth.
Step-by-step explanation:
2 things to remember for problems like this :
the sum of all angles in a triangle is always 180 degrees.
the law of sines :
a/sin(A) = b/sin(B) = c/sin(C) or upside-down (whatever fuss the situation better), with the sides being always opposite of the angles.
so, now for the given problems :
4.
x/sin(90) = 12/sin(29)
x/1 = x = 12/sin(29) = 24.75198408...
rounded x = 24.8
5.
the opposite angle of x is
180 - 90 - 16 = 74 degrees.
x/sin(74) = 37/sin(90) = 37
x = 37×sin(74) = 35.56668275...
rounded x = 35.6
6.
the opposite angle of x is
180 - 90 - 58 = 32 degrees.
x/sin(32) = 22/sin(58)
x = 22×sin(32)/sin(58) = 13.74712574...
rounded x = 13.7
7.
the opposite angle of 15 is
180 - 90 - 51 = 39 degrees.
x/sin(51) = 15/sin(39)
x = 15×sin(51)/sin(39) = 18.52345735...
rounded x = 18.5
Suppose a point (x, y) is selected at random from inside the unit circle (circle of radius 1 centered at the origin). Let r.v.R be the distance of the point from the origin. Find the sample space of R, SR Find P(R r) Plot the cdf of R. Specify the type of r.v.R
The type of r.v.R is a continuous random variable, since its possible values form a continuous interval [0,1].
The sample space of R is the interval [0,1], since the distance from the origin to any point inside the unit circle is between 0 and 1.
To find P(R < r), we need to find the probability that the randomly selected point falls inside a circle of radius r centered at the origin. The area of this circle is πr^2, and the area of the entire unit circle is π, so the probability is P(R < r) = πr^2/π = r^2.
The cdf of R is the function F(r) = P(R ≤ r) = ∫0r 2πx dx / π = r^2, where the integral is taken over the interval [0,r]. This is because the probability that R is less than or equal to r is the same as the probability that the randomly selected point falls inside the circle of radius r centered at the origin, which has area πr^2. The cdf of R is a continuous and increasing function on the interval [0,1].
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I'd maggy has 80 fruits and divides them ro twelve
The number of portion with each having 12 fruits is at most 6 portions.
To divide the fruits into 12 portions
Total number of fruits = 80
Number of fruits per portion = 12
Number of fruits per portion = (Total number of fruits / Number of fruits per portion )
Number of fruits per portion = 80/12 = 6.67
Therefore, to divide the fruits into 12 fruits , There would be at most 6 portions.
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Need help take your time and thank yoh
Answer:
(x - 3)(x - 12)
Step-by-step explanation:
Assuming you require to factor the expression
x² - 15x + 36
Consider the factors of the constant term (+ 36) which sum to give the coefficient of the x- term (- 15)
The factors are - 3 and - 12, since
- 3 × - 12 = + 36 and - 3 - 12 = - 15 , then
x² - 15x + 36 = (x - 3)(x - 12) ← in factored form
A rock dropped into a pond and creates a circular area of ripples whose radius increases at a constant rate of 2 feet per second. At what rate is the circular area increasing with respect to time when the radius os exactly 3 feet
The rate of change of the circular area is increasing at a constant rate of 12π square feet per second when the radius is exactly 3 feet.
To solve this problem, we need to use the formula for the area of a circle:
\(A = πr^2\),
where A is the area and r is the radius.
We also need to use the chain rule of differentiation because we are dealing with a changing radius over time.
First, we can find the rate of change of the area with respect to time (dA/dt) by differentiating the formula for the area:
dA/dt = 2πr(dr/dt)
where dr/dt is the rate of change of the radius with respect to time, which is given as 2 feet per second in the problem.
Therefore, we can substitute these values into the formula to get:
dA/dt = 2π(3)(2)
dA/dt = 12π
So, the rate of change of the circular area is increasing at a constant rate of 12π square feet per second when the
radius is exactly 3 feet.
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Answer answer please answer
is equal to
=
hope it helps...!!!
Answer:
Your answer would be C, =
Step-by-step explanation:
I got the answer wrong so go off of the other persons.
PLEASE HELP QUICKLY: (FIRST ANSWER GETS BRAINLIEST)
ou are buying batteries, a stereo, and some CDs from the I.B. Electronics store. You can buy from this store online or in a physical store. You have a coupon for 10% off that can only be used in the physical store and a $5.00 off coupon that can only be used online. The sales tax of 5% only applies to the physical store. Shipping for the online store is a flat rate of $6.99. You are trying to decide whether to shop at the physical store or the online store. Using the pricing information below, determine which store would cost less after all discounts, taxes, and shipping fees have been applied.
Item Quantity Physical Store Online Store
Batteries 2 packs $5.99/pack $4.99/pack
Stero 1 system $100.00/system $90.00/system
CDs 3 CDs $7.95/CD $8.95/CD
There is not enough information given.
It would cost less to purchase the items from the physical store.
It would cost less to purchase the items from the online store.
Answer:
It would be cheaper to use the online store
Step-by-step explanation:
the physical store added up to $129.04 and the online store was $128.82.
It would cost less to purchase the items from the physical store.
The correct option is C.
What is a percentage?A ratio or value that may be stated as a fraction of 100 is called a percentage. Moreover, it is indicated by the symbol "%."
To calculate the total cost for each store, we need to take into account the discounts, taxes, and shipping fees.
For the physical store:
Batteries: 2 packs x $5.99/pack = $11.98
Stereo: 1 system x $100.00/system = $100.00
CDs: 3 CDs x $7.95/CD = $23.85
Subtotal: $135.83
After the 10% discount: $135.83 - 10% = $122.25
Sales tax: $122.25 x 5% = $6.11
Total cost: $122.25 + $6.11 = $128.36
For the online store:
Batteries: 2 packs x $4.99/pack = $9.98
Stereo: 1 system x $90.00/system = $90.00
CDs: 3 CDs x $8.95/CD = $26.85
Subtotal: $126.83
After the $5.00 discount: $126.83 - $5.00 = $121.83
Shipping fee: $6.99
Total cost: $121.83 + $6.99 = $128.82
Therefore, it would cost less to purchase the items from the physical store.
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Use the following information in problems 33 and 34. In a survey of 6500 people, 5100 had a car, 2280
had a pet, 5420 had a television set, 4800 had a TV and a car, 1500 had a TV and a pet, 1250 had a car
and a pet, and 1100 had a TV, a car, and a pet.
How many people had a tv and a pet but not a car?
Using a Venn diagram we find that there are 400 people who have a TV and a pet but not a car.
What is a Venn diagram?A Venn diagram is an illustration that uses circles to show the relationships among things or finite groups of things.
Given, Total of 6500 people, in which,
5100 had car
5420 had a television set
4800 had a TV and a car
1500 had a TV and a pet
1250 had a car and a Pet
1100 had a TV, a car and a pet
Therefore, no of people having a TV and a pet but not car
= n(TV & Pet)-n(TV, car & pet)
= 1500 - 1100
= 400
Hence, there are 400 people who have a TV and a pet but not a car.
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Multiple Choice \( \$ 16.80 \) \( \$ 21.60 \) \( \$ 11.40 \) \( \$ 19.40 \)
If your required return is 6% per year, compounded monthly, and you are offered an investment that will pay you $800 a month for 40 years, the approximate amount you would be willing to pay for this investment is $16.80.
To determine the present value of the investment, we need to calculate the discounted value of the future cash flows. In this case, the cash flow is $800 per month, and the time period is 40 years, or 480 months.
Using the formula for present value, which is \(PV = CF / (1 + r)^n\), where PV is the present value, CF is the cash flow, r is the required return per period, and n is the number of periods, we can substitute the given values:
PV = $800 / (1 + 0.06/12)\(^(480)\)
Simplifying the expression, we find that the present value is approximately $16.80. This means that if you want to achieve a required return of 6% per year, compounded monthly, you would be willing to pay approximately $16.80 for this investment.
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Fill in the blank. I NEED AN ANSWER FASTTT
Answer:
It is =
Step-by-step explanation:
Because (6 x 1 = 6 ) + 1 x 1/100 = 6.1
There were some marbles in Box A, B and C. There were half as many beads in Box C as in B. How many marbles were there in Box A? Box A and B had a total of 560 Box A and C had a total of 438 marbles.
Required total number of marbles were 478 in Box A.
To find the number of marbles in Box A, given that Box A and B had a total of 560 marbles, and Box A and C had a total of 438 marbles, follow these steps:
Step 1: Let the number of marbles in Box A be x, Box B be y, and Box C be z.
Step 2: From the given information, we have two equations:
x + y = 560 (Equation 1)
x + z = 438 (Equation 2)
Step 3: Also, we know that there were half as many marbles in Box C as in Box B. So,
z = 0.5y (Equation 3)
Step 4: Substitute Equation 3 into Equation 2:
x + 0.5y = 438
Step 5: Solve for y in terms of x:
y = 2(x - 438)
Step 6: Substitute this expression for y back into Equation 1:
x + 2(x - 438) = 560
Step 7: Solve for x:
x + 2x - 876 = 560
3x = 1436
x = 478
So, there were 478 marbles in Box A.
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The required answer is A = 316
Explanation:-
1. Box A and B had a total of 560 marbles.
2. Box A and C had a total of 438 marbles.
3. There were half as many marbles in Box C as in Box B.
Let's use algebra to solve this problem. Assign the following variables:
- A: number of marbles in Box A
- B: number of marbles in Box B
- C: number of marbles in Box C
We are given:
1. A + B = 560
2. A + C = 438
3. C = (1/2)B
Now, let's solve the equations:
From equation 1, B = 560 - A.
Substitute this value of B in equation 3:
C = (1/2)(560 - A)
Now, substitute the value of C in equation 2:
A + (1/2)(560 - A) = 438
Multiply both sides by 2 to get rid of the fraction:
2A + 560 - A = 876
Combine like terms:
A = 876 - 560
A = 316
So, there are 316 marbles in Box A.
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Harrison expanded the square flower garden in his backyard. He made one side 3 feet longer and the other side 6 feet longer. The expanded rectangular flower garden has an area of 148 square feet. Use the drop-down menus to write an equation to model this situation
The equation to model the situation given in the question is (x+3)(x+6) = 148.
Let's assume that the original length and width of the square flower garden were "x". When Harrison expanded the garden, the new length became "x+3" and the new width became "x+6".
The area of a rectangle is given by the formula A = L × W, where A is the area, L is the length, and W is the width. Therefore, the area of the expanded rectangular flower garden is:
A = (x+3)(x+6)
We know that the area of the expanded rectangular flower garden is 148 square feet. So we can set up an equation:
(x+3)(x+6) = 148
{When we solve this equation using the quadratic formula we get x values:
x ≈ 8.2 and x ≈ -17.2 but we know x is the side of the garden so it cannot be negative, therefore, x = 8.2 unit}
This is the equation that models the situation described in the problem.
Therefore, the equation to model this situation is (x+3)(x+6) = 148.
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Answer the questions below in your own handwriting. Typed responses will not be accepted. When you are finished, scan/save this assignment to your computer and upload it to the correct drop box by the due date for full credit. 1. In the Ratey the Cat animation, there is a guy who earns $10 PER lawn. Complete the table below that represents money earned PER lawn. Lawns Mowed Money Earned 1 2 3 5 o Tema CP URO
Answer:
Lawns ---Earnings
1 ----------------- 10
2 ----------------- 20
3 ----------------- 30
5 ----------------- 50
Step-by-step explanation:
Given
Earnings = $10 per lawn
Required
Complete the table
Let y be the earnings for x number of lawns
Since he earns $10 per x lawns, then the expression is:
\(y = 10x\)
To complete the table, we have the following:
When x = 1
\(y = 10 * 1 = 10\)
When x = 2
\(y = 10 * 2 = 20\)
When x = 3
\(y = 10 * 3 = 30\)
When x = 5
\(y = 10 * 5 = 50\)
So, the complete table is:
Lawns ---Earnings
1 ----------------- 10
2 ----------------- 20
3 ----------------- 30
5 ----------------- 50
Write the equation of the line passing through points ( -2,-5) and (1,1)
Answer:
The equation of the line is:
\(y=2x-1\)
Step-by-step explanation:
Given the points
(-2, -5)(1, 1)Finding the slope between the points
\(\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}\)
\(\left(x_1,\:y_1\right)=\left(-2,\:-5\right),\:\left(x_2,\:y_2\right)=\left(1,\:1\right)\)
\(m=\frac{1-\left(-5\right)}{1-\left(-2\right)}\)
\(m=2\)
We know the slope-intercept form of the line equation
\(y=mx+b\)
where m is the slope and b is the slope-intercept form
substituting the value m=2 and the point (-2, -5) to find the b-intercept
\(y=mx+b\)
-5 = 2(-2) + b
b = -5+4
b = -1
Now, substituting m=2 and b=-1 in the slope-intercept form to get the equation of a line
y=mx+b
y=2x+(-1)
y=2x-1
Thus, the equation of the line is:
\(y=2x-1\)
What is the value of x?
Enter your answer in the box. x = °
Answer:
x=80
Step-by-step explanation:
my god this should be easy and I thought I was a bit slow
7 grade math please help
Answer:
Step-by-step explanation:
-3.4 is the lowest temperature.
Coldest temperature is -3.4 is recorded at 3:00 pm
The temperature closest to freezing point of water is -0.15
Answer:
Step-by-step explanation:
3:00pm is the coldest
12:00pm is the closest to freezing
The perimeter of a rectangle is 64cm. Its shortest side has a length of 3cm. State the length of the longest side.
Answer:
29
Step-by-step explanation:
P = 2l + 2w
64 = 6 + 2w
58/2 = w
=29
if three standard, six-faced dice are rolled, what is the probability that the sum of the three numbers rolled is 9? express your answer as a common fraction.
Answer:
25/216 or 0.115740741
Step-by-step explanation:
These are the possibilities of getting a sum of 9: 126 135 144 153 162 216 225 234 243 252 261 315 324 333 342 351 414 423 432 441 513 522 531 612 621 (Total of 25)
The total: 6*6*6= 216
25/216=0.115740741
Find the domain, range, y intercept(s), intervals where the graph is positive, interval(s) where the graph is decreasing, and interval(s) where the graph is increasing
Step-by-step explanation:
It is worked out step by step.
Madeline needs to find the slope of the line that passes through the points (9, 12) and (7,4) she sets up the following work
Answer:
4Step-by-step explanation:
The slope of the line passing through two given points: \(m=\dfrac{y_2-y_1}{x_2-x_1}\)
(9, 12) ⇒ x₁ = 9, y₁ = 12
(7, 4) ⇒ x₂ = 7, y₂ = 4
So, the slope:
\(m=\dfrac{4-12}{7-9}=\dfrac{-8}{-2}=4\)
if you roll six fair six-sided dice one time, what are the chances that at least one of the dice will come up a five? g
There is a probability of 66.5 % chance of it landing on a 5 at least once in 6 dice.
Because there are six faces on a die, you have an even chance of the dice landing on one of these faces each time you roll:
This means that each time that you roll, there is a 5/6 chance that you will not roll a 5.
The probability of not rolling a 6 twice is 5/6 or 69.4%.
Roll the die six times, and the probability of not rolling a 5 is
(5/6) * (5/6) * (5/6) * (5/6) * (5/6) * (5/6) * (5/6)
= (5/6)⁶
= 33.5%
Therefore, the probability of rolling a 5 at least once in 6 dice
= 100% - 33.5%
= 66.5%
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Here are four digits.
8 5 3 7
a) Use three of these digits to write down the smallest possible 3-digit number.
(1)
b) Here are four different digits.
6
1
9
4.
Put one of these digits in each box to give the largest possible answer
to the subtraction. You must use each digit only once.
(1)
Answer:
A: 357
(1) 9641
Step-by-step explanation:
With A you really just want to go from the smallest number up so it would be the smallest number possible.
EX. 357 vs. 736 357 is smaller
With 1 you have to go from the highest number to lowest number to get the biggest answer possible.
Ex. 9641 vs. 1946 9641 is larger.
which number line shows the solution to 5 + (-5)
Answer:
The number line is in the image
The answer to the question is 0
Step-by-step explanation:
\(5 + (-5)\\\\\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a\\=5-5\\\\\mathrm{Subtract\:the\:numbers:}\:5-5\\=0\\\)
help i need to know what k is
Answer:
k = 5
Step-by-step explanation:
The formula for coefficient of proportionality is y = kx.
In the given problem, the Area of a rectangle corresponds to "y" in the constant of proportionality formula, and "x" is still the same. Since the formula for the area of a rectangle is: A = L × W, then:
A = y
L = k
W = x
y = kx is the same as A = LW or A = L × W
Thus, we're looking for the value for k, which corresponds to the length (L) (which has a constant value).
Below are the calculations for the missing values in the table:
We'll start with x = 0.14, and A = 0.7 since we're given the values for them. We could plug these values into the formula for the Area of a rectangle to find the constant value of the length (L):
A = L * W
0.7 = L * 0.14
Divide both sides by 0.14 to isolate L:
0.7/0.14 = (L * 0.14)/0.14
5 = L ←← Keep in mind, this is the coefficient of proportionality.
x = 3.1:
A = L * W
A = 5 * 3.1
A = 15.5
x = 2.5:
A = 5 * 2.5
A = 12.5
x = 1.2:
A = 5 * 1.2
A = 6
x = 0.9:
A = 5 * 0.9
A = 4.5
Next, we're given the values for the Area, but we're missing the values for x. However, we already have the value for L = 5. We could still follow the same process by plugging in the values into the formula:
A = 0.3:
A = L * W
0.3 = 5 * W
Divide both sides by 5 to solve for W:
\(\frac{0.3}{5} = \frac{5 * W}{5}\)
0.06 = W
A = 0.1:
A = L * W
0.1 = 5 * W
Divide both sides by 5 to solve for W:
\(\frac{0.1}{5} = \frac{5 * W}{5}\)
0.02 = W
Therefore, k = 5.
Evaluate and must show work
But i don’t think there is anything left to be done is there?
Please help
Answer:
ln(x)/2 -3.810930
Step-by-step explanation:
The relevant rules of logarithms are ...
ln(ab) = ln(a) +ln(b)
ln(a^b) = b·ln(a)
ln(a/b) = ln(a) -ln(b)
ln(e) = 1
__
Your expression expands to ...
\(\ln\left(\dfrac{4\sqrt{x}}{9e^3}\right) = \ln(4\sqrt{x})-\ln(9e^3)=\ln(4)+\dfrac{1}{2}\ln(x)-(\ln(9)+3\ln(e))\\\\=\dfrac{1}{2}\ln(x)+\ln(4)-\ln(9)-3\\\\\approx\dfrac{\ln(x)}{2}-3.810930\)
SOLVE FOR X 4 (2x + 3) = 6x + 10 A. -2 B. -1 12 D. 1 OD B А A
Answer:
x= -1
Step-by-step explanation:
4 (2x + 3) = 6x + 10
8x+12=6x+10
8x+12-12=6x+10-12
8x=6x-2
8x-6x=6x-2-6x
2x=-2
x= -1
We shuffle a deck of 52 cards and then flip them one by one. Let X denote the number of times when we see three number cards in a row (the numbered cards are 2, 3, . . . , 10). Find the expected value of X.
The expected value of X is 100/663.
Let's consider the sequence of 3 number cards as an individual block, then we can see that there are 10 such blocks in the deck (2-3-4, 3-4-5, ..., 9-10-J, 10-J-Q), and there are 39 non-number cards in the deck.
Now, we can consider flipping the cards one by one and keep track of the number of times we see the beginning of a new block of 3 number cards. There are 50 positions in the deck where a block of 3 number cards could begin (the first 2 cards cannot start a block and the last 2 cards cannot end a block). For each position, the probability of seeing the beginning of a new block is given by:
P(new block) = P(first card is a number) x P(second card is the next number) x P(third card is the next number) = 10/52 x 4/51 x 4/50 = 2/663
Therefore, the expected value of X is:
E(X) = P(new block at position 1) + P(new block at position 2) + ... + P(new block at position 50) = 50 x P(new block) = 50 x 2/663 = 100/663
So, the expected value of X is 100/663.
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what expression is equivalent to -3(6x+7)+4(7x+2)
Answer:
10x-13
Step-by-step explanation:
First Distribute:
-18x-21+28x+8
Then combine like terms:
10x-13
if the numbers represented one-way mileages for trails to different lakes, which average(s) would make sense? (select all that apply.)
When considering one-way mileages for trails to different lakes, the following average(s) would make sense: arithmetic mean and median. The arithmetic mean, or simply the average, would be a suitable measure to consider when calculating the average one-way mileage for trails to different lakes.
It is calculated by summing up all the mileages and dividing them by the total number of trails. This average provides a balanced representation of the overall trail lengths, taking into account both shorter and longer distances. It can be useful for general comparisons and understanding the overall average trail length.
Additionally, the median would also be a relevant measure to consider. The median represents the middle value in a set of data when arranged in ascending order. In the context of one-way mileages for trails, the median would indicate the midpoint or the distance at which half of the trails are longer and half are shorter. This measure is particularly useful when there are extreme values or outliers in the data, as it is not affected by such extreme values. The median can provide a better representation of the typical trail length and help mitigate the influence of outliers on the average.
By considering both the arithmetic mean and the median, one can obtain a comprehensive understanding of the distribution of one-way mileages for trails to different lakes. The mean gives an overall average, while the median provides insights into the central tendency of the data, particularly when extreme values are present. Together, these measures offer a well-rounded perspective on the average trail lengths and help in making informed decisions or comparisons related to the trails and lakes.
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