I’m stuck on this question

The better buy for david is churro at the swap

To determine which is the better buy for David, we need to compare the cost per churro for each purchase.

For the farmers market purchase, David bought 3 churros for $2.1, so the cost per churro is:

Cost per churro at farmers market = 2.1/3 = 0.7

For the swap meet purchase, David bought 5 churros for $3.20, so the cost per churro is:

Cost per churro at swap meet = 3.2/5 = 0.64

Since the cost per churro at the swap meet is lower than the cost per churro at the farmers market, buying churros at the swap meet is the better buy for David.

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Answer:

i think the right answer is 9/21

Step-by-step explanation:

hope it will help you!!

Answer:

Your friend's error is that having two equal discriminants doesn't necessarily mean that the two quadratic equations will have the same roots. The discriminant of a quadratic equation determines whether the roots are real, complex, or equal. If two quadratic equations have the same discriminant, then they have the same nature of roots, but that does not mean that their roots are equal.

As an example, consider the following two quadratic equations:

1. x^2 + 4x + 4 = 0

2. x^2 + 6x + 9 = 0

Both equations have the same discriminant: (b^2 - 4ac) = 16 - 16 = 0, but their roots are different. The first equation has one real root: x = -2, while the second equation has only one root, which is repeated twice: x = -3.

Therefore, it is incorrect to conclude that two quadratic equations have the same roots just because they have the same discriminants.

Answer:

The circumference of a circle is calculated using the formula `C = 2πr`, where `r` is the radius of the circle. Since you have given the radius as 4 and asked to use 3.14 for π, we can calculate the circumference as `C = 2 x 3.14 x 4 = 25.12`.

The area of a circle is calculated using the formula `A = πr^2`, where `r` is the radius of the circle. Using the same values for π and r as before, we can calculate the area as `A = 3.14 x (4)^2 = 50.24`.

So, for a circle with a diameter of 8 and a radius of 4 (using 3.14 for π), its circumference is approximately **25.12** and its area is approximately **50.24**.

The function f with its inverse function [tex]f^{-1}[/tex] is equal to the identity function. The value of [tex]f^{-1}(4)f[/tex] is equal to 4.

To determine the value of [tex]f^{-1}[/tex](4)f−1(4)f, we would need to know the function f and its inverse function [tex]f^{-1}[/tex].

In this case, we are asked to find [tex]f^{-1}[/tex](4)f−1(4)f, start superscript minus 1, end superscript, left parenthesis 4, right parenthesis. This means we need to find [tex]f^{-1}(4)[/tex] and then plug that value into the original function f.

Now, [tex]f(f^{-1}(4))[/tex] can be simplified as follows:

[tex]f(f^{-1}(4)) = 4[/tex]

This is because [tex]f^{-1}(4)[/tex] is the input that produces an output of 4, and then f is applied to that input to produce the same output.

Multiplying [tex]f^{-1}(4)[/tex] by f is equivalent to evaluating the function f at the point [tex]f^{-1}(4)[/tex]. Thus, we have:

[tex]f(f^{-1}(4)) = 4[/tex]

This means that the composition of the function f with its inverse function [tex]f^{-1}[/tex] is equal to the identity function. Therefore, the value of [tex]f^{-1}(4)f[/tex] is equal to 4.

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Answer:

Step-by-step explanation:So that is a right angle,which means the sum is 90 degrees.so you subtract 90 from 62 then you have your answer.

Answer:

x = 28°

Step-by-step explanation:

It is given that the full angle measurement is a right angle (90°), denoted by the blue(?) box.

Set the equation:

Total angle measurement (90) = x + 62

I~

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Subtract 62 from both sides of the equation:

90 (-62) = x + 62 (-62)

x = 90 - 62

x = 28

x = 28° is your answer.

~

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Answer:

12

Step-by-step explanation:

Green beads

=60/100x20

=12

The it is used to understand the likelihood of getting a particular outcome or event from a population.It is important to note that the probabilities for parametric probability distribution models are expressed as cumulative probabilities. Cumulative probabilities are used to evaluate the probability of a particular event or outcome.

Probabilities for parametric probability distribution models are expressed as cumulative probabilities.Parametric probability distribution refers to a type of probability distribution in which the probability distribution is defined by the probability distribution's parameters. The parameters are usually numeric values that define the distribution's probability density function (PDF) or probability mass function (PMF).The probability distribution is usually used to model a population's characteristics.

It is used to help understand the probability of obtaining a particular set of results from a population.Cumulative probabilities Cumulative probability refers to the probability of obtaining a score equal to or lower than a particular value in a given distribution. It is a probability value that is used in statistical analysis, which is usually represented by the area under the probability distribution's curve.The cumulative probability can be expressed as follows:P(X ≤ x)Where;X: random variablex: score or valueCumulative probabilities are used to evaluate the probability of a particular event or outcome.

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Triangular prism formulas

volume = 0.5 * b * h * length , where b is the length of the base of the triangle, h is the height of the triangle, and length is prism length.

area = length * (a + b + c) + (2 * base_area) , where a, b, c are sides of the triangle and base_area is the triangular base area.

Our assumption that two consecutive elements of the Fibonacci sequence can be divisible by 13 is false, and the proposition is proved.

We begin with the fact that the Fibonacci sequence is an increasing sequence; that is, each element is greater than the one before it.

The sequence is defined as follows:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, 10946, 17711, 28657, 46368, 75025, 121393, 196418, 317811, 514229, 832040, 1346269, 2178309, 3524578, 5702887, 9227465, 14930352, 24157817, 39088169, 63245986, 102334155, 165580141, 267914296, 433494437, 701408733, 1134903170, 1836311903, and so on.

Now, let us prove the proposition by contradiction. Assume that there are two consecutive elements of the Fibonacci sequence that are divisible by 13. Then there must be some integer n such that:

F(n) = 13m, andF(n + 1) = 13p,

where m and p are integers.

Since the Fibonacci sequence is defined recursively by F(n) = F(n-1) + F(n-2), we can obtain an expression for F(n-2) in terms of F(n) and F(n-1):

F(n-2) = F(n) - F(n-1)Since F(n) and F(n-1) are both divisible by 13, their difference must also be divisible by 13.

Therefore, F(n-2) is divisible by 13 as well. However, this contradicts the well-ordering principle, which states that every non-empty set of positive integers has a least element.

Since the Fibonacci sequence is an increasing sequence, there must be some least element k such that F(k) is divisible by 13 but F(k-1) is not. But this means that F(k-2) cannot be divisible by 13, which contradicts our assumption that both F(n) and F(n-1) are divisible by 13.

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The volume and the surface area of the prism is 6 and 22 square inches²

First, lets find the volume of the prism

Volume:

[tex]\text{Volume}=\text{(Area of the base)}\times\text{height}[/tex]

[tex]\text{Volume}=(3\times2)\times1[/tex]

[tex]\text{Volume}=6 \ \text{square inches}^2[/tex]

Since the volume of the prism is 6, now to find the Surface area of the cubes.

[tex]\text{Surface area}= \text{Total area of the 2-dimensional surfaces to make 3-dimensional }[/tex]

[tex]\text{Surface area}=2\times3=6, \ 3\times1=3, \text{and} \ 1\times2=2[/tex].

[tex]\text{Surface area}=6(2)+3(2)+2(2)=22 \ \text{square inches}^2[/tex]

The surface area of the prism is 22.

Therefore, the volume and the surface area of the prism is 6 and 22 square inches²

Answer:

in image

Step-by-step explanation:

if it helped you please mark me a brainliest :))

Answer:

60°

Step-by-step explanation:

We know that a straight line would be 180 °.

we can see that  the line is split into 3 equal sides .

180° ÷ 3 = 60°

Answer: x < -35

Step-by-step explanation:

Answer:

45 minutes

Step-by-step explanation:

We Know

Kristiana went to a yoga class at 12:30.

She went to lunch with her friends for 1hr and 35 minutes

She finished lunch at 2:50

How long was her yoga class?

We take

12:30 + 1:35 = 2:05

Then we take

2:50 - 2:05 = 45 minutes

So, her yoga class was 45 minutes.

The angle marked x is 28°

The fοrmula fοr a simple straight line is Y = mX + b, where Y is the respοnse (dependent) variable, X is the predictοr (independent) variable, m is the estimated slοpe, and b is the estimated intercept.

We have,

A, B & C lie in a straight line.

D, B & E lie οn a different straight line.

∠CBE = 62°.

x =?

Because < ABD and <CBE are οppοsite vertex angle

<ABD = <CBE

And because ∠CBE = 62°

∠ABD = 62°.

1 x = 90°- 62°

= 28

Hence, the angle marked x is 28°

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The object would weight 42 pounds on Earth.

In physics, weight is a measure of the force exerted on an object due to gravity. It is a vector quantity, which means that it has both magnitude (numerical value) and direction.

Let's denote the weight of the object on Earth as W and set up a proportion:

Weight on Earth / Weight on Moon = Gravitational force on Earth / Gravitational force on Moon

Using the given information, we can substitute the weights and simplify:

W / 7 = 180 / 30

W / 7 = 6

Multiplying both sides by 7, we get:

W = 7 ×6 = 42

Therefore, the object would weigh 42 pounds on Earth.

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Answer:

a) discrete ; only from a particular building that stays the same

b) continuous ; the population of a country fluctuates and therefore shows trends

c) discrete ; information of a particular place

d) continuous ; there are trends of apple masses because there are different types of apples

Step-by-step explanation:

The greatest number of gift bags Ms. Bryant can make with 72 pencils and 54 pens is 18, with 4 pencils and 3 pens in each bag.

To find the greatest number of gift bags that Ms. Bryant can make, we need to find the greatest common factor (GCF) of the numbers of pencils and pens she has.

We can start by listing the factors of each number:

Factors of 72: [tex]1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72[/tex]

Factors of 54: [tex]1, 2, 3, 6, 9, 18, 27, 54[/tex]

To find the GCF, we look for the largest factor that is common to both lists. In this case, the largest common factor is 18.

This means that Ms. Bryant can make 18 gift bags, each containing 4 pencils and 3 pens, with no pencils or pens left over.

Therefore, the greatest number of gift bags Ms. Bryant can make with the given number of pencils and pens is 18.

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The statement is valid in light of the fact that the stretch can oblige three head developments every moment.

The probability of an event occurring is referred to as probability. We frequently have to make predictions about the future in real life. We may or may not be aware of the outcome of an event.

At the point when this happens, we broadcast that there is plausible that the occasion will happen. In conclusion, probability can be put to great use in business as well as in this rapidly expanding field of artificial intelligence.

By simply dividing the total number of outcomes by the favorable number of possibilities, the probability of an event can be calculated using the probability formula.

As a result, the claim is true because the time allows for three head movements per minute.

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.

Step-by-step explanation:

A dilation is a transformation that enlarges or reduces an object by a certain scale factor, and it is centered at a fixed point. In this case, we want to dilate the point (-3, 0) by a scale factor of 2, and the center of dilation is at the origin (0, 0).

To perform the dilation, we first need to find the distance between the point (-3, 0) and the center of dilation (0, 0), which is simply the magnitude of the vector (-3, 0), or 3.

Next, we need to multiply this distance by the scale factor of 2 to get the new distance after dilation, which is 6.

Finally, we need to find the point that is 6 units away from the origin along the same line that passes through the origin and the original point (-3, 0). This can be done by multiplying the direction vector of this line by the distance of 6 and adding the result to the center of dilation (0, 0). The direction vector is (-3, 0), normalized to have unit length, which is (-1, 0).

So the image of (-3, 0) after dilation by a scale factor of 2 centered at the origin is:

(-1 * 6, 0 * 6) + (0, 0) = (-6, 0)

Therefore, the image point is (-6, 0).

Answer: Well look at it closely so it will help you understand more of it.

Step-by-step explanation: I read it over and over and over again and I think this will help.

Angle in a semi-circle is a right angle then, angle x is 90°, Z is 100° and y is 53° (refer below figure)

The six trigonometric functions of an angle in a right-angled triangle are connected by a set of fundamental identities known as the "Circle identities" in trigonometry.

In a semicircle AGE, angle at the circumference is 90 degree.

then, angle x = 90°

and arc Z° from the center of circle is a triangle AOB, see below figure,

40° + Z° + 40° = 180°

Then, Z° = 100°

Similarly, arc 74° from center of circle is a triangle EOG;

74°+ y° + y° = 180°

Then, y° = 53°

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To calculate the mean, we first need to find the midpoint of each class interval. We can do this by adding the lower and upper limits of each interval and dividing by 2. We can then multiply each midpoint by its corresponding frequency and add up the products. Finally, we divide by the total frequency to get the mean:

Class interval   Midpoint    Frequency   Midpoint x Frequency

----------------------------------------------------------------

1-5                3          2             6

6-10               8          5            40

11-15              13          8           104

16-20              18         10           180

21-25              23         14           322

26-36              31          6           186

21-35              28          4           112

36-40              38          1            38

----------------------------------------------------------------

Total frequency:   50

Mean = (6 + 40 + 104 + 180 + 322 + 186 + 112 + 38) / 50 = 921 / 50 = 18.42

Class interval   Midpoint   Mean   Midpoint - Mean   (Midpoint - Mean)^2   Frequency   (Midpoint - Mean)^2 x Frequency

--------------------------------------------------------------------------------------------------------------

1-5                3       18.42     -15.42            238.1764           2              476.3528

6-10               8       18.42     -10.42            108.5764           5              542.8820

11-15              13       18.42      -5.42             29.3764           8              235.0112

16-20              18       18.42      -0.42              0.1764          10                1.7640

21-25              23       18.42       4.58             20.9764          14              293.6704

26-36              31       18.42      12.58            158.4964           6              950.9784

21-35              28       18.42       9.58             91.9364           4              367.7456

36-40              38       18.42      19.58            383.4464           1              383.4464

----------------------------------------------------------------------------------------------------------

Total frequency:   50                                                                                   3251.8512

To calculate the standard deviation, we first need to find the variance, which is the sum of the squared deviations divided by the total frequency:

Variance = (476.3528 + 542.8820 + 235.0112 + 1.7640 + 293.6704 + 950.9784 + 367.7456 + 383.4464) / 50

= 65.0378

Then, we take the square root of the variance to get the standard deviation:

Standard deviation = sqrt(65.0378) = 8.06

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Answer:

Step-by-step explanation:

if an equation needs only one step to isolate the variable, it is 1-step. For example, 4x=16, which means x=4. Generally I’m not sure of a way other than that to know if an equation is one step or multi-step.

-4(x+5)-2=6x

So, use distributive property.

-4x-20-2=6x

Add 4x to both sides.

-20-2=10x

Solve -20-2.

-22=10x

Divide 10 from both sides.

x=-10/22

Simplify

x=-5/11

After answering the provided question, we can conclude that Therefore, the coordinates of M' are (11, -8).

In mathematics, a coordinate is a number or combination of integers that indicates the location of a point or object in space. Coordinates are frequently used to define a point or object's position in a specific coordinate system, such as the Rectilinear or polar coordinate systems. In the Cartesian coordinate system, a point is located by its distance from the origin along the x-axis and its distance first from origin along the y-axis. These distances are represented by two digits, the x-coordinate and indeed the y-coordinate. The point's position in the plane is specified by the two coordinates.

(x', y') = (x, y) - (a, b)

a) To find the coordinates of K', we need to use the above formula with (a, b) = (-6, 2) and (x, y) = (3, 4) (the coordinates of K in the original figure)

(x', y') = (x, y) - (a, b)

= (3, 4) - (-6, 2)

= (3 + 6, 4 - 2)

= (9, 2)

Therefore, the coordinates of K' are (9, 2).

(x', y') = (x, y) - (a, b)

= (5, -6) - (-6, 2)

= (5 + 6, -6 - 2)

= (11, -8)

Therefore, the coordinates of M' are (11, -8).

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The Jumble is an MP3 player owned by Greg. The Jumble chooses music for the user to hear at random. Greg's Jumble features nine rap tracks, seven rock songs, and six classical songs.  The probability of not selecting a rap song is 0.59.

The total number of songs on the Jumble is 6 + 7 + 9 = 22.

To find the probability of not selecting a rap song, we need to find the number of songs that are not rap songs, which is the sum of the number of classical and rock songs on the Jumble:

6 + 7 = 13

Therefore, the probability of not selecting a rap song is:

13/22

To round this to two decimal places, we can divide 13 by 22 using a calculator or long division to get:

0.59

Therefore, the probability of not selecting a rap song is 0.59 or 59%.

The complete question is:-

Greg has an MP3 player called the Jumble. The Jumble randomly selects a song for the user to listen to. Greg's Jumble has 6 classical songs, 7 rock songs, and 9 rap songs on it. What is P(not a rap song) If necessary, round your answer to 2 decimal places.

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Answer:

.50 chance that she gets a chocolate chip cookie or 50 percent.

Step-by-step explanation:

half of all the cookies in the jar are chocolate chip cookies. 12/24 meaning that there is a 50/50 chance that she'll get a chocolate chip cookie

.50

If below assumptions are not met, then the validity of the confidence interval may be compromised, and alternative methods may need to be used to estimate the mean increase in blood pressure.

In statistics, sampling is the process of selecting a subset of individuals or objects from a larger population for the purpose of studying or estimating certain characteristics of the population. The subset of individuals or objects is known as a sample.

Sampling is often used when it is impractical or impossible to collect data on the entire population. By studying a representative sample, statisticians can make inferences about the population as a whole with a certain level of confidence.

In order for a 95% confidence interval for the mean increase in blood pressure to be valid, the following assumptions must be made:

If these assumptions are not met, then the validity of the confidence interval may be compromised, and alternative methods may need to be used to estimate the mean increase in blood pressure.

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if you invest $2,500 at a weekly compounding rate of 4.5% for 4 years, you will have approximately $3,157.22 to use as a down payment on your Can-Am Spyder.

How to solve investment?

If you invest $2,500 at a 4.5% weekly compounding rate, it will grow to a considerable amount in 4 years. To calculate this, we need to use the compound interest formula:

A = P(1 + r/n)

Where:

A = the final amount

P = the principal amount (initial investment)

r = the annual interest rate

n = the number of times the interest is compounded per year

t = the number of years

In this case, we have:

P = $2,500

r = 4.5% = 0.045

n = 52 (since compounding is weekly)

t = 4 years

Plugging in these values, we get:

A = $2,500(1 + 0.045/52) in power (52*4) = $3,157.22

So, if you invest $2,500 at a weekly compounding rate of 4.5% for 4 years, you will have approximately $3,157.22 to use as a down payment on your Can-Am Spyder.

It's important to note that this calculation assumes that the investment vehicle will have a steady and reliable return rate for the entire 4 years. There is always some level of risk involved with investing, so it's important to do your research and make informed decisions about where to put your money.

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