Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives it until it runs out of gas. He conducts this experiment 15 times on each car and records the number of miles driven.
Full data set
Car 1
248
230
204
227
243
285
285
157
280
251
163
318
273
316
272
Car 2
226
201
232
202
241
244
234
278
246
279
276
247
252
274
272
Describe each data​ set, that is determine the​ shape, center, and spread.
Sample mean for Car 1
x overbar equals
nothing
mi​ / 10 gal
​(Type an integer or decimal rounded to one decimal place as​needed.)
Sample mean for Car 2
x overbar equals
nothing
mi​ / 10 gal
​(Type an integer or decimal rounded to one decimal place as​needed.)
Median for Car 1
Mequals
nothing
mi​ / 10 gal
​(Type an integer or decimal rounded to one decimal place as​needed.)
Median for Car 2
Mequals
nothing
mi​ / 10 gal
​(Type an integer or decimal rounded to one decimal place as​needed.)
Range for Car 1
Requals
nothing
mi​ / 10 gal
​(Type an integer or decimal rounded to one decimal place as​needed.)
Range for Car 2
Requals
nothing
mi​ / 10 gal
​(Type an integer or decimal rounded to one decimal place as​needed.)
Sample standard deviation for Car 1
sequals
nothing
mi​ / 10 gal
​(Type an integer or decimal rounded to one decimal place as​needed.)
Sample standard deviation for Car 2
sequals
nothing
mi​ / 10 gal
​(Type an integer or decimal rounded to one decimal place as​needed.)
Which car would the customer buy and​ why?
A.
Car
1
​,
because it has a lower mean gas mileage.
B.
Car
1
​,
because it has a larger range of gas mileage.
C.
Car
2
​,
because it has a lower sample standard​ deviation, hence more predictable gas mileage.
D.
There is very little difference between the two cars.

Answer:10%

Step-by-step explanation:

For number one its a decrease equaling 10%

The value of x = -1 + √ 5/8, and -1 - √ 5/8 .

Sometimes it's preferred to solve quadratic equations without the use of the known quadratic formula solver. One of the most-used methods consists of completing squares and solving for x.

Using the first equation 8(x2+2x + 1) = - 3 + 8 to solve the problem

The steps.

8(x2+2x + 1) = - 3 + 8

8(x2+2x + 1) = 5

(x + 1)2= 5/8

x = -1 + √ 5/8, and -1 - √ 5/8

What are quadratic equations?

The polynomial equations of degree two in one variable of type f(x) = ax2 + bx + c = 0 and with a, b, c, and R R and a 0 are known as quadratic equations. It is a quadratic equation in its general form, where "a" stands for the leading coefficient and "c" is for the absolute term of f. (x). The roots of the quadratic equation are the values of x that fulfill the equation (, ).

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Answer:

Jack will have both practices for 4 days of the month.

Step-by-step explanation:

I used a calendar and marked each day he would have swimming practice in green and each day he would have baseball practice in magenta accordingly. The days that had both marks were the days he had both practices, which was 4 days in total.

Answer:Angle 6 and Angle 5, Angle 3 and Angle 2

100% correct don't worry ;)

Step-by-step explanation:

True .The bisection method is a root-finding tool based on the intermediate value theorem. the method is also called the binary search method.

The bisection technique is a root-finding approach that is used to identify the values of x for which f(x) = 0, or the roots, of a function. Using the intermediate value theorem, the approach selects the subinterval in which the function's root must reside after repeatedly bisecting an interval containing the root of the function. This approach can be repeated again until the algorithm converges to a result that accurately approximates the function's root.

The bisection method divides the interval repeatedly to approximatively determine the roots of the given equation.

The interval will be divided using this manner until an incredibly tiny interval is discovered. The bisection method is a technique for locating roots in mathematics.

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The pointer rotates through 23.87°

You can find angle θ using the formula s = rθ. This is because this voltmeter reading can be treated as part of a circle. A longer gauge curve can form a full circle centered at the base of the pointer. s in this formula equals 2.5 centimeters, which is the distance the pointer moves. The value of r is 6 centimeters, the radius of the circle.

2.5=6θ

θ=2.5 : 6

θ= 0.417°

To convert this angle to degrees, you need to use a unit converter. After converting the units, π rad is 180°. To take advantage of this fact, multiply the result by 180°/πrad. This removes radians and adds trad degrees. 

0.417× 180°/πrad= 23.87°

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Answer:

the circumference of the circle is 24π feet

Step-by-step explanation:

The area of a circle is A = πr^2, where r is the radius. So, if the area is 144π ft^2, we can solve for the radius:

144π = πr^2

r^2 = 144

r = 12

The circumference of a circle is given by the formula C = 2πr, so substituting in the value of the radius, we find:

C = 2π * 12

C = 24π

Using the sketch, the possible range of values of x for which 2x² + 3x - 2≤0 is [-2, 0.5].

The domain of a function is a possible set of values of the independent variable. Based on the domain of a function, the codomain and range are determined.

Take the inequality as 2x²+3x-2≤0.

Solve the inequality.

2x²+3x-2≤0

(2x-1)(x+2)≤0

→ -2≤x≤0.5

The inequality is sketched in the graph and the area is also shaded for which 2x²+3x-2≤0. The range values of x mean the set of all points in the inequality -2≤x≤0.5, that is, [-2, 0.5].

Therefore, the obtained answer is [-2, 0.5].

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The distribution of the indicator function Z, which denotes the probability of S being greater than T, can be expressed in terms of the marginal density and the cumulative distribution function of the independent random variables S and T.

In probability theory, a random variable is a variable whose value depends on the outcome of a random event. The distribution of a random variable describes the probability of the variable taking on different values.

Now, let's consider the two independent random variables S and T with common continuous density f. We define X as the minimum of S and T, and Y as the maximum of S and T.

The indicator function Z is defined as the probability of the event {S > T}. In other words, Z takes on the value of 1 if S is greater than T, and 0 otherwise.

To find the distribution of Z, we need to consider the joint probability distribution of S and T. Since S and T are independent, their joint distribution is given by the product of their marginal distributions:

f(S,T) = f(S) * f(T)

Now, let's consider the event {S > T}. This event occurs when S is on the right side of the diagonal line T=S in the (S,T) plane. The probability of this event can be obtained by integrating the joint density over this region:

P(S > T) = ∫∫ {S > T} f(S,T) dS dT

We can simplify this integral by changing the order of integration:

P(S > T) = ∫∞-∞ ∫S∞ f(S,T) dT dS

= ∫∞-∞ f(S) ∫S∞ f(T) dT dS

= ∫∞-∞ f(S) (1 - F(S)) dS

where F(S) is the cumulative distribution function of the random variable T, which gives the probability that T is less than or equal to S.

Thus, we have obtained the distribution of Z as a function of the marginal density f and the cumulative distribution function F:

P(Z=1) = ∫∞-∞ f(S) (1 - F(S)) dS

P(Z=0) = ∫∞-∞ f(S) F(S) dS

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Complete Question:

Let X be the minimum and Y the maximum of two independent random variables S and T with common continuous density f, i.e X = min{S,T}, Y = max{S, T}, and let Z =>t denote the indicator function of the event {S > T}.

What is the distribution of Z?

The process that will create a congruent figure is a translation of four units up, followed by a rotation (option B).

A figure is said to be congruent with another if they both have the same shape and the dimensions are the same. This means the figures are almost identical, although it is allowed that they are a reflection or that they are placed in the opposite direction.

Based on this, to create a congruent figure you need to translate the original figure and rotate it but not change its size (option B).

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The length of JL is 9x + 22.

What are properties of rectangle?

A rectangle is a four-right-angle quadrilateral. It can also be classified as an equiangular quadrilateral because all of its angles are equal; or a parallelogram with a right angle. A square is a rectangle with four equal-length sides.

In a rectangle, opposite sides are equal in length. So, JL is equal to KM.

We have the expressions for the lengths of JN and NM. Using this information and the fact that JKLM is a rectangle, we can set up an equation:

JN + NM = JL + KM

Substituting the given expressions, we get:

(13x - 10) + (5x + 54) = JL + KM

Simplifying the left side, we get:

18x + 44 = JL + KM

But we know that JL = KM, so we can replace both JL and KM with JL:

18x + 44 = 2JL

Now we can solve for JL:

2JL = 18x + 44

JL = (18x + 44)/2

JL = 9x + 22

Therefore, The length of JL is 9x + 22.

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Part A:

Here is the table for the values of y when x = 0, 5, 8, 10, and 30:

x y = -12x + 360

0 360

5 240

8 192

10 180

30 -360

Part B:

After 5 minutes, the altitude of the plane  = 240 feet

After 30 minutes, the altitude of the plane = -360 feet.

To find the value of y for each x, we substitute x into the equation y = -12x + 360:

For x = 0, y = -12(0) + 360 = 360

For x = 5, y = -12(5) + 360 = 240

For x = 8, y = -12(8) + 360 = 192

For x = 10, y = -12(10) + 360 = 180

For x = 30, y = -12(30) + 360 = -360

Part B:

After 5 minutes, the altitude of the plane can be found by substituting x = 5 into the equation

y = -12x + 360

y = -12(5) + 360 = 240 feet

After 30 minutes, the altitude of the plane can be found by substituting x = 30 into the equation

y = -12x + 360

y = -12(30) + 360 = -360 feet.

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The simplified expression of p^8/p^7 is given as follows:

p.

The expression for this problem is defined as follows:

p^8/p^7.

When two terms with the same base and different exponents are divided, we keep the base and subtract the exponents, hence the subtraction of the exponents is given as follows:

8 - 7.

Meaning that the simplified expression of p^8/p^7 is given as follows:

p.

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The division of 7x³ - 25x² + 17x - 7 by x - 3 will have a quotient of 7x² - 4x + 5 and a remainder of 8 using synthetic division.

The procedure for synthetic division involves the following steps:

Divide.

Multiply.

Subtract.

Bring down the next term, and

Repeat the process to get zero or arrive at a remainder.

We shall divide 7x³ - 25x² + 17x - 7 by x - 3 as follows;

7x³ divided by x equals 7x²

x - 3 multiplied by 7x² equals 7x³ - 21x²

subtract 7x³ - 21x² from 7x³ - 25x² + 17x - 7 will give us -4x² + 17x - 7

-4x² divided by x equals -4x

x - 3 multiplied by -4x equals -4x² + 12x

subtract -4x² + 12x from -4x² + 17x - 7 will give us 5x - 7

5x divided by x equals 5

x - 3 multiplied by 5 equals 5x - 15

subtract 5x - 15 from 5x - 7 will give result to a remainder of 8

Therefore by synthetic division, 7x³ - 25x² + 17x - 7 divided by x - 3 will result to a quotient of 7x² - 4x + 5 and a remainder of 8.

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The probability that Jacob makes both free throws is approximately 0.1924 or 19.24%.

The probability that Jacob makes the first free throw is 0.37, and the probability that he misses it is 0.63.

If he makes the first free throw, the probability that he makes the second free throw given that he made the first is 0.52, which means the probability that he misses the second free throw given that he made the first is 0.48.

So, the probability that Jacob makes both free throws is:

P(both made) = P(made first) [tex]\times[/tex] P(made second | made first)

= 0.37 [tex]\times[/tex] 0.52

= 0.1924

Therefore, the probability that Jacob makes both free throws is approximately 0.1924 or 19.24%.

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The missing statements and reasons in the two column proof are;

1. AOC and BOD.

2. All radii of a circle are congruent

3. SAS congruency theorem

4. CPCTC

A two-column proof is defined as a geometric proof consists of a list of statements, and the reasons that we know those statements are true.

The two column proof of the angles is;

Statement 1: Central angles ∠AOC and ∠BOD are congruent

Reason 1: Given

Statement 2: The segments AO, CO, BO, and DO are congruent

Reason 2: All radii of a circle are congruent

Statement 3: Triangle AOC is congruent to triangle BOD

Reason 3: SAS congruency theorem

Statement 4: Chord AC is congruent to chord BD

Reason 4: CPCTC (Corresponding Parts of Congruent Triangles are Congruent)

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Answer:

Step-by-step explanation:

To calculate ocean depth based on sounding times, you can use the equation:

depth = (sound velocity x time) / 2, where sound velocity in seawater is approximately 1500 meters per second.

For a sounding time of 6 seconds, the depth would be:

depth = (1500 m/s x 6 s) / 2 = 4500 / 2 = 2250 m

For a sounding time of 2.5 seconds, the depth would be:

depth = (1500 m/s x 2.5 s) / 2 = 3750 / 2 = 1875 m

So, the depths would be:

6 seconds: 2250 m

2.5 seconds: 1875 m

For the given wave properties,

At what depth will the wave begin to break?

The depth at which a wave begins to break depends on a number of factors, including the wave height, wave period, water depth, and water temperature. As a rough estimate, waves typically begin to break when their height is 1/7th of the water depth. For deep water waves with a height of 0.5 meters, this depth would be approximately 3.5 meters. However, for the exact depth at which a wave will begin to break, more detailed information would be required.

What is the celerity of the wave?

The celerity (also known as phase velocity) of a wave is given by the formula:

celerity = wavelength / period.

For the given wave, the celerity would be:

celerity = 10 m / 2 s = 5 m/s

What is the wave's frequency?

The frequency of a wave is given by the formula:

frequency = 1 / period.

For the given wave, the frequency would be:

frequency = 1 / 2 s = 0.5 Hz

To choose that a matrix is neither a diagonal matrix and are not scalar multiples of each other. The matrices will be as:

A = [ 2 1 ; 1 2 ]

B = [ -2 1 ; 1 2 ]

The matrices shown above can be used to find invertible matrices. The sum of A and B is [0 2; 2 4], which has a non-zero determinant and is therefore invertible. This choice of A and B satisfies the given conditions because they have different eigenvalues, ensuring they are not scalar multiples of each other, and are also not diagonal matrices.

The key idea behind this choice was to use matrices with the same trace and determinant, which guarantees that their sum will have the same determinant as well. This method allows us to construct examples of invertible matrices that satisfy the given conditions.

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Answer:

the inverse of f(x) = 5x^3 is g(x) = (x/5)^(1/3).

Step-by-step explanation:

To find the inverse of f(x) = 5x^3, we need to find a function g(x) such that g(f(x)) = x.

Let y = f(x) = 5x^3, then we solve for x in terms of y:

y = 5x^3

x^3 = y/5

x = (y/5)^(1/3)

Thus, g(x) = (x/5)^(1/3).

Therefore, the inverse of f(x) = 5x^3 is g(x) = (x/5)^(1/3).

Replace f(x) with y. We get y=5x^3.

Swap x and y. We get x=5y^3.

Solve for y. We get y=(x/5)^(1/3).

Change y to f-1(x). We get f-1(x)=(x/5)^(1/3).

Therefore, the inverse of f(x)=5x^3 is f-1(x)=(x/5)^(1/3).

I don't if this is enough or not but this is what I get.

The probability of Y is greater than or equal to 1 given that X is equal to 2 i.e. P(Y ≥ 1 | X = 2) is 2/3.

To find P(Y ≥ 1 | X = 2), we will calculate the conditional probability of Y being greater than or equal to 1 given that X is equal to 2.

First, let us find the probability of X = 2, which is the number of 2 tickets in the box divided by the total number of tickets as follows -

P(X = 2) = 3/9

Next, let us find the probability of Y ≥ 1 and X = 2, which is the number of tickets with Y greater than or equal to 1 and X equal to 2 divided by the total number of tickets as follows -

P(Y ≥ 1, X = 2) = 2/9

Finally, using the formula for conditional probability to find P(Y ≥ 1 | X = 2) we get -

P(Y ≥ 1 | X = 2) = P(Y ≥ 1, X = 2) / P(X = 2)

P(Y ≥ 1 | X = 2) = (2/9) / (3/9)

P(Y ≥ 1 | X = 2) = 2/3

Therefore, the probability of Y is greater than or equal to 1 given that X is equal to 2 is 2/3.

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Answer: 34

Step-by-step explanation:

The first step is if you multiply 8x4 you get 32

And then if you add 32+2 you get 34

According to PEMDAS

P=Parenthesis

E=Exponents

M=Multiplication

D=Division

A=Addition

S=Subtraction

Thus, you have to multiply, then add. If not you will get a way off answer. Also, because M comes before A.

Answer:

34

Step-by-step explanation:

To evaluate the expression 2 + 8m when m = 4, we can simply substitute 4 for m in the expression and simplify:

2 + 8m = 2 + 8 * 4

= 2 + 32

= 34

So, when m = 4, the value of the expression 2 + 8m is 34.

The true statement is that

The equation of the two line is written by

The slope, m of the lines is calculated the formula

m = (y₀ - y₁) / (x₀ - x₁)

where

m = slope

x₂ and x₁ = points in x coordinates

y₂ and y₁ = points in y coordinates

The slope, m of the linear function is calculated using  the points (10, 6) and (2, 15)

m = (y₀ - y₁) / (x₀ - x₁)

m = (6 - 15) / (10 - 2)

m = (-9) / (8)

m = -9/8

equation passing through point (2, 15)

(y - y₁) = m (x - x₁)

y - 15 = -9/8(x - 2)

y - 15 = -9x/8 + 9/4

y = -9x/8 + 9/4 + 15

y = -9/8 x + 17.25

For line B

The slope, m of the linear function is calculated using  the points (5, 9)

and (14, -1)

m = (9 + 1) / (6 - 14)

m = (-10) / (8)

m = -5/4

equation passing through point (5, 9)

y - 9 = -5/4(x - 5)

y - 9 = -5x/4 + 25/4

y = -5x/4 + 25/4 + 9

y = -5/4 x + 15.25

plotting the lines shows the line intersects at a point

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As a result, any real number higher than or equal to 12 or less than or equal to -12 is a solution to the inequality, implying that the answer is any real integer.

An inequality is a mathematical statement that compares two values and indicates whether they are equal, greater than, or less than each other. Inequalities are represented using symbols such as <, >, ≤, and ≥, which stand for "less than", "greater than", "less than or equal to", and "greater than or equal to", respectively. For example, the inequality 2 < 5 means that 2 is less than 5, and the inequality 3 ≥ 1 means that 3 is greater than or equal to 1. Inequalities are often used to describe the range of possible values for a variable, and to represent constraints in mathematical models and real-world problems. The solution of an inequality is the set of values that make the inequality true.

Here,

To solve this inequality, we first need to evaluate the expression inside the absolute value. If x is positive, then |x| = x, so the inequality becomes:

6x ≥ 72

Dividing both sides by 6, we get:

x ≥ 12

If x is negative, then |x| = -x, so the inequality becomes:

6(-x) ≥ 72

Expanding the absolute value, we get:

-6x ≥ 72

Dividing both sides by -6, we get:

x ≤ -12

Therefore, all real numbers greater than or equal to 12 or less than or equal to -12 are solutions of the inequality, meaning the solution is all real numbers.

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There are 120 possibilities for the top three positions.

Combinations are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

To calculate combinations, we will use the formula nCr = n! / r! * (n - r)!, where n represents the total number of items, and r represents the number of items being chosen at a time.

Given:

Six teammates are competing for first, second, and third place in a race.

Total number of teammates= 6

Now, we need to find the number of possibilities for the top three positions

Possibility for 1st position = 6

Possibility for 2nd position = 5

Possibility for 3rd position = 4

So total number of possibilities

= 6x 5 x 3

= 120

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The length of the line QR is 3 units. Options A

The properties of a pentagon is expressed as;

From the image shown, we have that;

The point from Q to R are (-8, -5)

To determine the distance, we have that;

-8-(-5)

-8 + 5

Add the values

-3

Hence, the number  is 3

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The value of the x in the circle is 17.

'

The angle measure of the central angle is congruent to the measure of the intercepted arc.

Therefore, let's find the value of x.

Hence,

180 - 3x(angle on a straight line) = 7x + 10

180 - 3x = 7x + 10

add 3x to both side of the equation

180 - 3x = 7x + 10

180 - 3x + 3x = 7x + 3x + 10

180 = 10x + 10

180 - 10 = 10x

170 = 10x

x = 170 / 10

x = 17

Therefore,

x = 17

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Considering the descriptions, angle CEB is found to be 93 degrees

Angle CEB is calculated by investigating the sketch attached

From the sketch, angle CEB and angle AEC are supplementary angles

and angle AEC is given to be 87 degrees.

Supplementary angles are angles that have their sum equal to 180 degrees.

hence In the problem, we have that

angle CEB + angle AEC = 180 degrees

where

angle AEC = 87.

substituting the value into the equation will result to

angle CEB + 87 = 180

angle CEB = 180 - 87

angle CEB = 93 degrees

We can therefore say that angle CEB = 93 degrees

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