Computers in some vehicles calculate various quantities related to performance. One of these is the fuel efficiency, or gas mileage, usually expressed as miles per gallon (mpg). For one vehicle equipped in this way, the car was set to 60 miles per hour by cruise control, and the mpg were recorded at random times. Here are the mpg values from the experiment:37.221.017.424.927.036.938.835.332.323.919.026.125.841.434.432.525.326.528.222.1Suppose that the standard deviation of the population of mpg readings of this vehicle is known to be σ=6.5mpga) What is σx¯, the standard deviation of x¯ (x Bar)?b) Based on a 95% confidence level, what is the margin of error for the mean estimate?c) Given the margin of error computed in part (b), give a 95% confidence interval for μμ, the mean highway mpg for this vehicle. The vehicle sticker information for the vehicle states a highway average of 27 mpg. Are the results of this experiment consistent with the vehicle sticker?

The cost per ounce of the juice is $0.0.9 using unitary method.

The unitary approach is a strategy for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value. The unitary method, in its most basic form, is used to calculate the value of a single unit from a specified multiple. The unitary technique can be used to complete it. Additionally, after determining the value of a single unit, we can increase that value by the number of units needed to determine the value of the additional units. What is division?One of the four fundamental arithmetic processes, or how numbers are combined to create new numbers, is division. The other processes are addition, subtraction, and multiplication. The reverse of multiplying is division.

In this question,

64-ounce container of juice costs $5.76. I

ounce of juice costs = 5.76/64= $0.09

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The value of n, which represents the number of sides in polygon B, is 160.

Geometry is a branch of mathematics that deals with the study of shapes, sizes, positions, and properties of objects in space.

The given diagram shows parts of three regular polygons, labeled as A, B, and C, meeting at a point. Angles within the polygons are labeled with their respective measures in degrees.

According to the diagram:

Since polygons A, B, and C are regular polygons, all their interior angles are equal. Let's denote the measure of each interior angle in polygon B as n°.

Now, we can set up an equation based on the angle measures in the diagram:

3x + 8x + 7x = 360

Simplifying the equation:

18x = 360

Dividing both sides by 18 to solve for x:

x = 360 / 18

x = 20

Now, substituting the value of x back into the equation for n° in polygon B:

8x = 8 * 20 = 160

Hence, the value of n, which represents the number of sides in polygon B, is 160.

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Complete question:

The best deal for Jack and Jill would be for Jill to offer Jack $10, and for Jack to accept this offer. This would give Jack $9.09 in the future after discounting, and it would give Jill $10 in the future after discounting.

Jack will accept anything positive.

Jill is indifferent between $20 in one year and $16 today (she discounts the future at 20%).

Jack is indifferent between $4 in one year and $3.60 today (he discounts the future at 10%). Note that $16.40 is preferred by Jill to $16 in one year.

Discount refers to the process of reducing the value of future benefits or costs, based on the assumption that people generally prefer immediate benefits to delayed ones. This means that the further into the future a benefit or cost occurs, the less valuable it is considered to be in the present.

Discounting is commonly used in economics, finance, and environmental analysis, where it plays a significant role in determining the present value of future cash flows, investments, and environmental damages. The concept is also used in decision-making, as individuals and organizations often make choices based on their perception of the present value of future outcomes.

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For the first equation with y = 3x + 2 and y = -4x + 2, the lines have the same slope, but a different y-intercept. This means that the lines are parallel and they will never intersect. Therefore, the system of equations has no solution.

For the second equation with y = 2x + 7 and y = 2x - 4, the lines have the same slope and the same y-intercept. This means that the lines are coincident and they will intersect at one point. Therefore, the system of equations has one solution.

For the third equation with y = 6x + 3 and y = -x - 4, the lines have a different slope and a different y-intercept. This means that the lines are not parallel and they will intersect at one point. Therefore, the system of equations has one solution.

For the fourth equation with y = 4x + 3 and y = 4x - 1, the lines have the same slope and the same y-intercept. This means that the lines are coincident and they will intersect at one point. Therefore, the system of equations has one solution.

For the fifth equation with y = 3x + 6 and y = 3x + 6, the lines have the same slope and the same y-intercept. This means that the lines are coincident and they will intersect at one point. Therefore, the system of equations

Answer:

Anita is 11 years old and sarun 55 years old( not so sure about this answer... what do you think)

Step-by-step explanation:

let Anita's age be x

and sarun's age be 3x

if, x-5 = 3x+7

3x+7 = 5(x-5)

3x+7=5x-25

32=2x

x=16

their ages 3 years ago,

Anita= 16-5=11yrs

sarun= 3*16+7 = 55yrs

In conclusion, we can prove that[tex](A -B) U (A C)[/tex] is a superset of[tex]A - (B nC)[/tex] using both the choose-an-element method and the algebra of sets.

To answer this question, let's first draw two Venn diagrams to represent the sets A, B, and C. In the first Venn diagram, shade the region that represents[tex]A - (B nC)[/tex].

This is the region outside of the intersection of B and C and inside of A. In the second Venn diagram, shade the region that represents [tex](A -B) U (A C).[/tex] This is the union of the region outside of B and the region outside of C, both of which are inside of A. Based on these diagrams, we can make the conjecture that (A -B) U (A C) is a superset of A - (B nC).

To prove this conjecture, we can use the choose-an-element method. Let a be an element of A - (B nC). This means that a is in A, but not in B or C. Since a is in A, it is also in (A -B) U (A C), and therefore (A -B) U (A C) is a superset of A - (B n C).

We can also use the algebra of sets to prove this conjecture.[tex]A - (B n C) = (A -B) U (A -C) since A - (B n C)[/tex]is the union of the regions outside of B and outside of C, both of which are inside of A. This implies that (A -B) U (A C) is a superset of A - (B nC).

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Answer: To fill out a table of equivalent ratios for Blake's lemonade recipe, we can use the ratio of lemons to cups of lemonade:

Lemons             Cups of Lemonade

3                        4

6                        8

9                        12

12                      16

15                      20

18                      24

To plot the points on a coordinate axes, we can use the Lemons as the x-coordinate and the Cups of Lemonade as the y-coordinate. The points would lie on a line that passes through the origin (0,0) and the point (12,16).

         |       *

 Cups of |    *     *

Lemonade  | *           *

         |________________

            Lemons

              0    12

The line represents the proportional relationship between the number of lemons and the amount of lemonade produced. As the number of lemons increases, the amount of lemonade produced increases proportionally.

Step-by-step explanation:

Answer:

Proofs attached to answer

Step-by-step explanation:

Proofs attached to answer

Answer:

4,320 times

Step-by-step explanation:

12 x 6 = 72 beats per minute

72 x 60 = 4320 beats in 60 minutes

Answer: 840 in 30 minuets

Step-by-step explanation:

Answer:

U=8

Step-by-step explanation:

48<5U+8

-5U<8-48

-5U<-40

-5U/-5<-40/+5

U>8

Thomas and Sadio have a 15:8 savings ratio that will be ready in five weeks.

In mathematics, a ratio shows how frequently one number appears in another.

For instance, the proportion of oranges to lemons in a fruit plate would be eight to six if there were eight oranges and six lemons.

Oranges make up 8:14 of the total fruit, whereas lemons make up 6:8 of the total fruit.

So, the number of weeks would be:

Considering that Sadio savings = 15 + 4.50 times

Thomas = x4

Where the number of weeks is x.

Sadio : Thomas  =  15 : 8

15 + 4.50x : 4x =  15 : 8

(15+ 4.50x ) / 4x =  15 / 8

Now, perform cross multiplication as follows:

8 (15+ 4.50x) = 15 (4x)

120 + 36x = 60x

60x - 36x = 120

24x = 120

x = 120 / 24 = 5 weeks

Therefore, Thomas and Sadio have a 15:8 savings ratio that will be ready in five weeks.

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Correct question:

Sadio starts with savings of £15. Thomas starts with no savings. Each week from now, Sadio will save £4.50 and Thomas will save £4. In how many weeks will Sadio and Thomas have savings in the ratio 15:8 ?

This means that, by lowering the confidence level, it is easier to reach the desired level of statistical significance and thus easier to conclude that the number of days above 90 degrees has increased.

F) Lowering the degrees of freedom would make it easier to conclude that there are more days above 90 degrees in 2018 compared to 1948 globally. The reason for this is that reducing the degrees of freedom makes it easier to achieve the desired statistical significance. By reducing the degrees of freedom, you are essentially decreasing the number of observations needed in order to reach the desired confidence level. This makes it easier to conclude that the number of days above 90 degrees has increased since 1948, as it requires fewer observations to reach the desired significance level.

G) Lowering the confidence level would make it easier to conclude that there are more days above 90 degrees in 2018 compared to 1948 globally. This is because a lower confidence level requires less data in order to achieve the desired statistical significance. By reducing the confidence level, fewer observations are needed in order to prove that the number of days above 90 degrees has increased since 1948. This means that, by lowering the confidence level, it is easier to reach the desired level of statistical significance and thus easier to conclude that the number of days above 90 degrees has increased.

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By combinations, we get that there are 20,020 possible 6-topping pizzas.

Given that a pizza parlor offers a choice of 16 different toppings, we need to find the number of 6-topping pizzas that are possible. No double-orders of toppings are allowed. What is the number of 6-topping pizzas that are possible?

The formula for combinations is as follows:

ncr = (n!)/(r! * (n - r)!) where n = 16 (total number of toppings available)

r = 6 (number of toppings required for a pizza)

ncr = (16!)/(6! * (16 - 6)!)

⇒ ncr = (16!)/(6! * 10!)

⇒ ncr = (16 * 15 * 14 * 13 * 12 * 11)/(6 * 5 * 4 * 3 * 2 * 1)

⇒ ncr = (16 * 3 * 5 * 7 * 13 * 11)/(3 * 2 * 2)

⇒ ncr = 20,021

In this situation, the order of the toppings does not matter. Therefore, we cannot have a repeat of the same toppings, as mentioned. Hence the answer to the question is no. Thus, there are 20,020 possible 6-topping pizzas.

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A manufacturer of compact fluorescent light bulbs advertises have a standard deviation of 1,000 hours so the values are:

A normal distribution with,

μ = 9000

σ = 1000

a) The standardized score is the value x decreased by the mean and then divided by the standard deviation.

x = 105000 - 9000 / 1000 ≈ 1.50

Determine the corresponding probability using the normal probability table in appendix,

P(X>10500) = P(Z>1.50) = 1 - P(Z<1.50)

= 1 - 0.9332 = 0.0668.

b) n = 15

The sampling distribution of the mean weight is approximately normal, because the population distribution is approximately normal.

The sampling distribution of the sample mean has mean μ and standard deviation σ/√n

μ = 1000/√15 = 258.19

c) The sampling distribution of the sample mean has mean μ and standard deviation σ/√n

The z-value is the sample mean decreased by the population mean, divided by the standard deviation:

z = x-u/σ/√n = 10500-9000/1000√15 = 5.81

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A fair coin is flipped 40 times. The probability of getting a head when the coin is tossed is 0.5. If the same coin is flipped 40 times, the probability will remain 0.5. That is, there are equal chances of getting heads and tails when a fair coin is flipped.

Based on the confidence interval, if the actual proportion of heads falls within the range of the confidence interval, it can be said that the coin used was fair. If the actual proportion is outside the confidence interval, it may be an indication that the coin was not fair.

The level of confidence is typically 95% or 99%. If a confidence interval is constructed for the proportion of heads based on a sample of 40 flips and the interval includes the expected proportion of 50%, it can be said that the coin used was fair. If the interval does not include 50%, there is evidence that the coin may not be fair.

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The values of a=4, b=4, c=8, d=16, e=12, f=36 and g = 64

The first step is to evaluate the function for each value of x given in the table, which gives us the values of y1, y2, and y3 for x=0, 1, 2, and 3.

For example, to find the value of y3 for x=1, we use the function y3=4^x and substitute x=1, which gives us y3=4^1=4. Similarly, we can find the values of y1 and y2 for each value of x using the given functions.

a = y3(x=1) = 4^1 = 4

a = y3(x=2) = 4^1 = 4

c = y1(x=2) = 4(2) = 8

d = y3(x=3) = 4^2 = 16

e = y1(x=3) = 4(3) = 12

f = y2(x=3) = 4(3)^2 = 36

g = y3(x=3)= 4^3 = 64

Complete, the table

x     y1=4x      y2=4x^2  y3=4^x

0       0              0              1

1        4              4              4

2       8             16             16

3       12            36            64

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The given question is incomplete, the complete question is:

Complete the table for each function.  Then answer the questions that follow.

a = ?, b= ?, c= ?,  d= ?,  e= ?, f= ?, g= ?

Answer:

logistic growth

Step-by-step explanation:

In logistic growth, a population's per capita growth rate gets smaller and smaller as population size approaches a maximum imposed by limited resources in the environment, known as the carrying capacity ( K).

Answer:

0.999

Step-by-step explanation:

If the driver wore a seat belt, that is the only column we have to look at.

The chance the driver survived is number survived / number total.

Plugging in, we get 412,042/412,493, or about 0.999.

Hope this helps!

The car travelled at 80km/h for 7 hours and travelled a distance of 560km whereas the ferry travelled at 16km/h for 20 hours and travelled a distance of 320km.

We know that the Anderson’s travelled for 880 km from St. Johns to Halifax via Argentia and that part of the trip was by car at 80 km/h and the rest by ferry at 16 km/h.

we need to find how much time did it take the Anderson’s to travel by car and by ferry

as part of the journey was done by car and the other by ferry

560km was travelled by car therefore now we need to find time travelled by car = distance = speed x time

we get time travelled by car = 7 hours

similarly we need to find the time take by ferry we have:

320km travelled by ferry at 16km/h we get the time travelled by ferry = 20hours

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As a result of demonstrating that two pairs of corresponding sides and their included angles are congruent in both triangles

A triangle is a closed, double-symmetrical object composed of three line segments known as sides that intersect at three points known as vertices. Triangles are distinguished by their sides and angles. Triangles can be equilateral (all factions equal), isosceles, or scalene based on their sides. Triangles are classified as acute (all angles are less than 90 degrees), okay (one angle is equal to 90 degrees), or orbicular (all angles are greater than 90 degrees) (all angles greater than 90 degrees). The region of a triangle can be calculated using the formula A = (1/2)bh, where an is the neighbourhood, b is the triangle's base, and h is the triangle's height.

Triangle ABC with AB, BC, and AC sides.

Triangle DEF with DE, EF, and DF sides.

Angle ABC and angle DEF are vertical angles, which means they are congruent, as shown in the diagram. As a result, angle ABC = angle DEF.

We can see from the diagram that BC and EF are both vertical, so they must be congruent because they are opposite sides of a parallelogram. As a result, BC = EF.

Because they are opposite sides of a parallelogram, they must be congruent. As a result, AC = DF.

As a result of demonstrating that two pairs of corresponding sides and their included angles are congruent in both triangles, we can conclude that Triangle ABC and Triangle DEF are congruent using the Side-Angle-Side (SAS) criterion.

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The answer is 45 toy soldiers which can be solved by applying the fundamentals of algebra.

Algebra is a branch of mathematics which uses symbols to represent numbers and variables in equations and formulas to solve problems. Algebra is used to understand the relationships between different values, to find unknown values, and to solve equations.

To represent the two scenarios provided in the question, we must first build up two equations.

If Leo arranges the toy troops in the first scenario four by four, then the equation is 4x = 27, where x is the total number of toy soldiers.

If Leo arranges the toy troops seven times out of seven in the second scenario, the equation is 7x = 54, where x is the total number of toy soldiers.

The equations must then be solved in order to determine the value of x in each equation.

We multiply both sides of the equation by 4 to get x = 6.75 for the first equation.

To get x = 7.71428 we multiply both sides of the second equation by 7.

We settle on 6, the lowest whole number between 6.75 and 7.7142, because there must be an even number of toy soldiers. In the first situation, Leo has a total of 24 toy soldiers, while in the second, he has 42, or 4 x 6 and 7 x 6, respectively.

Since the question specifies that there should be between 27 and 54 toy soldiers, we choose the higher value of 42 to arrive at the correct response, which is 45 toy soldiers.

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The correct answer is graph with the x axis labeled number of side dishes and the y axis labeled cost in dollars and a line going from the point 0 comma 6 and 75 hundredths through the point 3 comma 9.

Axis refers to the number of dimensions in a graph, chart, or plot. It is an imaginary line that is used to measure and plot values in a graph. In a line graph, the x-axis is the horizontal line and the y-axis is the vertical line.

The first graph shows a relationship between the number of side dishes and the total cost of the special that does not match the data given in the table.

The second graph does not reflect the data given in the table, as the total cost of the special increases from $5.25 to $9.00 when the number of side dishes increases from 0 to 5.

The third graph also does not reflect the data given in the table, as the total cost of the special increases from $6.75 to $8.25 when the number of side dishes increases from 0 to 4.

The fourth graph also does not reflect the data given in the table, as the total cost of the special increases from $5.75 to $7.25 when the number of side dishes increases from 0 to 1.

Therefore, the correct answer is mentioned above. This graph accurately reflects the relationship between the number of side dishes and the total cost of the special.

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The correct answer is "graph with the x axis labeled number of side dishes and the y axis labeled cost in dollars and a line going from the point 0,6 and 75 hundredths through the point 3,9".

Axis refers to the number of dimensions in a graph, chart, or plot. It is an imaginary line that is used to measure and plot values in a graph.

This graph correctly illustrates the relationship between the number of side dishes and the total cost of the special as shown in the table.

The line starts at 0 side dishes and $6.75

and ends at 4 side dishes and $8.25, both of which are in the table.

The graph accurately reflects this by having a line that starts at 2 side dishes and $6.75 and ends at 5 side dishes and $9.00.

This shows that as the number of side dishes increases, the cost also increases.

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The motorist has been traveling for approximately 2.6 hours when she is 299 miles from her destination.

To find how long the motorist has been traveling when she is 299 miles from her destination, we need to solve for t in the equation d(t) = 299.

Substituting 299 for d(t) in the given equation, we get:

299 = 468 - 65t

Subtracting 468 from both sides, we get:

-169 = -65t

Dividing both sides by -65, we get:

t ≈ 2.6

The given equation d(t) = 468 - 65t is an example of a linear function, where the distance traveled is a linear function of the time spent traveling. The slope of this function is -65, which means that the distance traveled decreases at a rate of 65 miles per hour.

The y-intercept of the function is 468, which represents the initial distance from the destination when the motorist starts traveling. The x-intercept of the function is found by setting d(t) = 0, which gives t = 7.2. This represents the time at which the motorist reaches her destination if she maintains a constant speed.

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Complete question is:

The distance in miles of a motorist from her destination is given by the function d(t)=468-65t,, where d(t) is the distance and t is the time she has been traveling, in hours. How long has the motorist been traveling when she is 299 miles from her destination?

The sale price including tax is $ 2390.625.

Given that,

The price of the snow machine= $ 1800

Discount percentage= 25%

Sales tax rate = 6.25%

Hence, Sale price = Price + Discount percentage of price

                              = 1800 + 25/100 × 1800

                              = 1800 + 450

                              = 2250.

Sale price including tax = Sale price + Tax rate

                                       = 2250 + 6.25/100

                                       = 2250 + 140.625

                                       = $ 2390.625.

Hence, the sale price including tax is $ 2390.625.

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The R9,000 loan offer can be analyzed as follows;

A loan is a financial agreement that is made between a lender and a borrower, such that the borrower accepts a certain amount of money provided by the lender, which is to be paid back after a specified period of time, with an interest.

The total amount which has to be paid as repayment for the loan can be obtained by finding the product of the monthly installment and the total number of months to repay the loan:

Total amount Theo pays = R318.92 × 48 = R15308.16

The reasons banks and other financial institutions offer loans to people that did not apply for loans includes;

Theo's investment options can be analyzed as follows;

Option 1: Investment with simple interest calculation

Interest earned = R9,000 × 8% × 4 years = R2,880

The total value of the investment after 4 years = R9,000 + R2,880 = R11,880

Option 2: Investment with compound interest calculation

The total value of the investment after 4 years = R9,000 × (1 + 7%)⁴ = R11,797.16409

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The equation of the line perpendicular to y = 1/3x - 9 that passes through the point (-6, 10) is y = -3x - 8.

The given equation is in slope-intercept form, y = mx + b, where m is the slope and b is the y-intercept.

So, we can see that the slope of the given line is 1/3.

A line perpendicular to this line will have a slope that is the negative reciprocal of the slope of the given line.

The negative reciprocal of 1/3 is -3.

Now, we have the slope of the perpendicular line and a point that it passes through. We can use point-slope form to find the equation of the line.

Point-slope form, y - y1 = m(x - x1), where (x1, y1) is the given point and m is the slope.

Substituting the values we have

y - 10 = -3(x - (-6))

y - 10 = -3(x + 6)

y - 10 = -3x - 18

y = -3x - 8

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The given question is incomplete, the complete question is:

Write the equation of a line perpendicular to y = 1/3x - 9 that passes through the point (-6, 10)

11.87 m² metal sheet would be needed to make the base area of tank.

Volume of cylinder, determines how much material it can carry, is determined by the cylinder's volume. A cylinder is a three-dimensional structure having two parallel, identical bases that are congruent.

It is given that capacity of a closed cylindrical vessel of height 2 m is 3080 liters

Let us assume that Radius of cylinder = r

Then Volume of cylinder = π ×r² ×h

= 2π ×r²× m³

1 m³ = 1000 liters

= 2000 π r²  liters

Volume of tank = Capacity

2000 π r² = 3080

=> 2000 × (22/7) × r² = 3080

=> r² = 49/100

=> r = 7/10 m

=> r = 0.7 m

Base Area of tank = TSA = 2πrh + 2πr²

= 2×(22/7)(0.7)×2 + 2×(22/7)×(0.7)²

= 3.0772 +8.792

= 111.87 m²

Hence, 11.87 m² metal sheet would be needed to make it.

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Answer:

-3.375

Step-by-step explanation:

the point of a geometric sequence is that every new term is created by multiplying the previous term by a constant factor that is the same across the whole sequence.

that factor is called the common ratio.

so, 32 was multiplied by the common ratio, and we get -108 as result.

32 × cr = -108

cr = -108/32 = -27/8 = -3.375 = -3 3/8

Answer:

-8 < k

Step-by-step explanation:

4 < 4(k+3)

4 < 4k + 12

-8 < k

Answer:

52.17%

Step-by-step explanation

[tex]\frac{12000}{23000}[/tex] ×100%

[tex]\frac{1200}{23}[/tex]

52.17