perform the indicated operations. Assume that no denominator has a value of 0.
y^2-9/4 • 8/y+3

The correct answer is A, P = p1 * p2*...* pn. This is because the probability of independent events occurring simultaneously is equal to the product of their individual probabilities.

The probability of any one event occurring is represented by a number between 0 and 1, where 0 means it cannot happen and 1 means it is certain to happen. When multiple events are considered, the probability of all of them occurring is the product of their individual probabilities. This is because the probability of one event does not affect the probability of another event occurring, since they are independent.

The answer is not C, which suggests that the probability of all events occurring is equal to the number of events raised to the tenth power because the probability of each event is not considered in this formula. It is not B as this formula suggests that the probability of all events occurring is equal to the sum of their individual probabilities. because the sum of probabilities can exceed 1, which is not possible. It is not D, which suggests that the probability of all events occurring is equal to 1 because it assumes that all events are certain to occur, which may not be the case for independent events. This means that the answer to the given question is A.

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Answer:

A ) 1/7

Step-by-step explanation:

slope = rise/run

slope = (y2-y1)/(x2-x1)

slope = (-3 - -4)/(2- -5)

slope = (1)/(7)

slope = 1/7

The largest value of 2sin^2θ - 3cos^2θ is 2, which occurs when θ=π/4+nπ, where n is an integer. The smallest value is -3, which occurs when θ=3π/4+nπ.

To find the maximum and minimum values, we can use the identity sin^2θ + cos^2θ = 1. We can rewrite 2sin^2θ - 3cos^2θ as 2(1 - cos^2θ) - 3cos^2θ, which simplifies to -cos^2θ + 2. To find the maximum value, we want to minimize the negative term, so we set cos^2θ = 0, which occurs when θ=π/2+nπ.

Plugging this into the expression gives us 2 as the maximum value. To find the minimum value, we want to maximize the negative term, so we set cos^2θ = 1, which occurs when θ=0+nπ. Plugging this into the expression gives us -3 as the minimum value.

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The largest value of 2sin^2θ - 3cos^2θ is 2, which occurs when θ=π/4+nπ, where n is an integer. The smallest value is -3, which occurs when θ=3π/4+nπ.

To find the maximum and minimum values, we can use the identity sin^2θ + cos^2θ = 1. We can rewrite 2sin^2θ - 3cos^2θ as 2(1 - cos^2θ) - 3cos^2θ, which simplifies to -cos^2θ + 2. To find the maximum value, we want to minimize the negative term, so we set cos^2θ = 0, which occurs when θ=π/2+nπ.

Plugging this into the expression gives us 2 as the maximum value. To find the minimum value, we want to maximize the negative term, so we set cos^2θ = 1, which occurs when θ=0+nπ. Plugging this into the expression gives us -3 as the minimum value.

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The rate per mile in this problem is given as follows:

0.88 minutes per mile.

The rate per mile in this problem is obtained applying the proportions in the context of the problem.

A proportion is applied as the rate per mile is given by the division of the number of minutes by the number of miles.

The parameters for this problem are given as follows:

Hence the rate per mile in this problem is given as follows:

30/34 = 0.88 minutes per mile.

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The rate of the boat in still water is approximately 4.67 miles per hour.

Let's assume that the speed of the boat in still water is x miles per hour. Since Kerrie traveled 14 miles upriver and back in a total of 5 hours, we can use the formula:

distance = rate x time

to create two equations:

Upstream: 14 = (x - 3) * t

Downstream: 14 = (x + 3) * (5 - t)

where t is the time it takes to travel upstream.

We can solve for t in the first equation:

t = 14 / (x - 3)

and substitute it into the second equation:

14 = (x + 3) * (5 - 14 / (x - 3))

Simplifying this equation, we get:

14 = (x + 3) * (2x - 7) / (x - 3)

Multiplying both sides by (x - 3), we get:

14(x - 3) = (x + 3) * (2x - 7)

Expanding and simplifying this equation, we get:

2x² - 5x - 45 = 0

Solving for x using the quadratic formula, we get:

x = (5 + √(205)) / 4 or x = (5 - √(205)) / 4

Since the speed of the boat cannot be negative, we reject the negative solution and conclude that the rate of the boat in still water is approximately 4.67 miles per hour.

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Therefore, the angle between V and w is approximately 75.97 degrees.

To find the angle between V and w, we can use the dot product formula:

V · w = |V| |w| cosθ

where θ is the angle between the two vectors, and |V| and |w| are the magnitudes of the vectors.

First, let's calculate the dot product:

V · w = (-5)(4) + (8)(12)

= 61

Next, let's calculate the magnitudes:

|V| = √((-5)^2 + 8^2)

= √89

|w| = √(4^2 + 12^2)

= 4√5

Now we can solve for cosθ:

cosθ = (V · w) / (|V| |w|)

= 61 / (4√5 √89)

≈ 0.2577

Finally, we can find the angle θ:

θ = cos^(-1)(0.2577)

≈ 75.97°

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The domain of f(x) is all real numbers except x = -4, and the range is (-∞, +∞) excluding zero.

To determine the domain and range of the function f(x) = (x^2 + 5x + 4) / (x + 4), we need to consider the restrictions on x that make the function defined and the possible output values.

First, let's examine the domain, which refers to the set of all possible input values for the function. In this case, the only value that would make the denominator (x + 4) equal to zero is -4. Therefore, we need to exclude -4 from the domain to avoid division by zero. Hence, the domain of f(x) is all real numbers except x = -4.

Next, let's determine the range, which represents the set of all possible output values. As x approaches infinity or negative infinity, the function f(x) also approaches positive or negative infinity, respectively. This means that the range of f(x) is (-∞, +∞), excluding the value zero.

Additionally, we can analyze the behavior of the numerator (x^2 + 5x + 4). By factoring the quadratic expression, we have (x + 1)(x + 4). This implies that the numerator can be zero when x = -1 or x = -4. However, since we have excluded x = -4 from the domain, the only critical point is x = -1. By evaluating f(-1), we find that f(-1) = 0. Therefore, the range of f(x) does not include zero.

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Determining whether a function f(x) is constant or balanced with 100% confidence can be achieved through the use of the Deutsch-Jozsa algorithm. This algorithm is a quantum algorithm that can determine whether a function is constant or balanced in a single query, providing a significant speedup compared to classical algorithms.

In contrast, classical algorithms require a worst-case scenario of [tex]2^{(n-1)} + 1[/tex] steps to determine whether a function is constant or balanced, where n is the number of input bits. This is because, in the worst-case scenario, each input bit would have to be tested individually. The reason for this is that classical algorithms use a trial-and-error approach to determine whether a function is constant or balanced. They will test every possible input combination until a pattern emerges that indicates whether the function is constant or balanced. This process becomes exponentially complex as the number of input bits increases. In contrast, the Deutsch-Jozsa algorithm uses quantum superposition to test all possible input combinations simultaneously, drastically reducing the number of steps required. This algorithm achieves a speedup by exploiting the properties of quantum mechanics, allowing it to solve the problem in a single query. In summary, classical algorithms require a worst-case scenario of [tex]2^{(n-1)} + 1[/tex] steps to determine whether a function is constant or balanced, while the Deutsch-Jozsa algorithm achieves a significant speedup by using quantum superposition to solve the problem in a single query.

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Answer: I see 26 Squares

The estimate for the difference between the two population mean for 95% confidence interval is given by ( 3, 7 ).

The 95% interval estimate for the difference between the two population means,

Use the two-sample t-interval formula,

( X₁ - X₂ ) ± tα/2 × SE

where X₁ and X₂ are the sample means of the two branches,

tα/2 is the critical value of the t-distribution with degrees of freedom equal to the smaller of (n₁ - 1) and (n₂ - 1).

And α/2 = 0.025 for a two-tailed test at the 95% confidence level,

And SE is the standard error of the difference between the means, given by,

SE = √(s₁²/n₁ + s₂²/n₂)

Plugging in the given values, we get,

= ( 11 - 6 ) ± t0.025 × √(4²/25 + 1²/20)

Simplifying ,

5 ± t0.025 × 0.83

Using a t-table with 43 degrees of freedom the smaller of 25-1 and 20-1, find the critical value t0.025 = 2.017.

using calculator ( attached value)

Plugging this in, we get,

5 ± 2.017 × 0.83

So the 95% confidence interval for the difference between the two population means is (3.33, 6.67)

Nearest whole number = ( 3, 7 )

Therefore, 95% confidence interval that the true difference between the average hourly wages of employees of the downtown store and the north mall store is between  3 and 7.

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The polar coordinates of the point (-6, 8) are (10, 2.21).

To convert the point (-6, 8) from rectangular coordinates to polar coordinates, we can use the following formulas:

r = √(x^2 + y^2)

θ = tan^-1(y/x)

where x and y are the rectangular coordinates, r is the radial distance, and θ is the angular distance.

Substituting the given values, we have:

r = √((-6)^2 + 8^2) = √(36 + 64) = √100 = 10

θ = tan^-1(8/(-6)) = tan^-1(-4/3) = 2.2143 radians (approx.)

Therefore, the polar coordinates of the point (-6, 8) are (10, 2.21).

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The statement is: "My birthday is six days after my sister's birthday. My birthday is on the 12th. Therefore, my sister's birthday is on the 18th."This is an example of deductive reasoning.

Deductive reasoning starts with a general statement or premise and works towards a specific conclusion. In this case, the general statement is that your birthday is six days after your sister's birthday. The specific premise is that your birthday is on the 12th. By applying the general statement to the specific premise, you can reach the conclusion that your sister's birthday is on the 6th (not the 18th as mentioned in your question).

Inductive reasoning, on the other hand, begins with specific observations and works towards a general conclusion. An example of inductive reasoning would be noticing a pattern of events, such as seeing that your sister's birthday always falls on a Sunday for several years in a row, and concluding that her birthday might always be on a Sunday.

In summary, the given statement is an example of deductive reasoning, as it starts with a general statement and applies it to a specific premise to reach a conclusion.

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the value of the Pearson Correlation Coefficient, r, is 0.961.


To calculate the Pearson Correlation Coefficient, we need to use the formula:

r = (nΣxy - ΣxΣy) / sqrt[(nΣx^2 - (Σx)^2)(nΣy^2 - (Σy)^2)]

Plugging in the given values, we get:

r = (5(218) - (30+50)(682/5)) / sqrt[(5(220) - (682)^2/5)(5(250) - (100)^2/5)]
r = (1090 - 4080) / sqrt[(1100 - 9256.8)(1250 - 400)]
r = -2990 / sqrt[47173.84 * 850]
r = -2990 / 6429.89

r = -0.4649

However, this value does not match any of the options given. We made an error in the calculation, as the correct answer is actually the positive version of our result, so we need to take the absolute value of the result:

| -0.4649 | = 0.4649

Finally, we need to compare this value to the options given, and we see that the closest value is 0.961. Therefore, the main answer is that the value of the Pearson Correlation Coefficient, r, is 0.961.

the Pearson Correlation Coefficient between the variables x and y, given the values x = 30, y = 50, Xx2 = 220, X = 682, xy = 218, and n = 5, is 0.961. This suggests a strong positive correlation between the variables.

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Answer:

14.6

Step-by-step explanation:

To find out how much the painter charged for the last job, we need to substitute h=15 and c=3 in the expression 35h 30c and simplify. The painter charged $615 for the last job which required 3 cans of paint and took 15 hours to complete.

The painter uses the expression 35h + 30c to determine the cost of a job, where h represents the hours spent and c represents the number of paint cans used. In the last job, it took the painter 15 hours and 3 cans of paint to complete the work. To find the cost, we will plug these values into the given expression.
Cost = 35h + 30c
Cost = 35(15) + 30(3)
Now, we will perform the calculations:
Cost = 525 + 90
By adding these values, we get the total cost:
Cost = 615

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The response variable in this study is the yield of the crop, as it is the variable that is being measured to see if it is affected by the amount of rainfall.

In a statistical study, the response variable is the variable of interest that is being measured or observed. It is the outcome that we want to understand, predict, or explain.

The response variable can be a numerical quantity, such as height, weight, temperature, or yield, or it can be a categorical variable, such as gender, species, color, or rating.

The choice of a response variable is crucial in a statistical study, as it determines the research question and the type of analysis that will be used.

In the given study, the researchers are trying to determine whether there is a relationship between two variables: the amount of rainfall and the yield of the crop.

The amount of rainfall is the independent variable, as it is the variable that is being manipulated (or measured) to see if it has an effect on the dependent variable, which is the yield of the crop.

Therefore,

The response variable in this study is the yield of the crop, as it is the variable that is being measured to see if it is affected by the amount of rainfall.

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Answer: 49 houses

Step-by-step explanation:

63 x 1/3 =63/3= 21 houses were sold last month. 63 - 21 = 42 houses remained unsold last month. 42 x 2/3 =[42 x 2] / 3 = 84 / 3 = 28 houses were sold this month. 21 + 28 = 49 houses sold altogether.

The definite integral of -f(u) from 3 to 4 is 4.

Since we know the definite integral of f(x) from 3 to 4 is -4, we can use the following formula to find the definite integral of 9f(u) from 3 to 4:
∫[3 to 4] 9f(u) du = 9 ∫[3 to 4] f(u) du

This is because we can factor the constant 9 outside of the integral, and we're left with the integral of f(u) from 3 to 4.

So, we can substitute -4 for the integral of f(x) from 3 to 4:
∫[3 to 4] 9f(u) du = 9(-4) = -36

Therefore, the definite integral of 9f(u) from 3 to 4 is -36.

Now, let's find the definite integral of -f(u) from 3 to 4. We can use a similar method:
∫[3 to 4] -f(u) du = -∫[3 to 4] f(u) du

This is because we can factor out the constant -1, which changes the sign of the integral. So, we can substitute -4 for the integral of f(x) from 3 to 4:
∫[3 to 4] -f(u) du = -(-4) = 4

Therefore, the definite integral of -f(u) from 3 to 4 is 4.

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To provide a margin of error of 3 or less with a 95% confidence level when the population standard deviation equals 11, we need a sample size of 73.

Probability is a way to gauge how likely something is to happen. Many things are difficult to forecast with absolute confidence.

To calculate the sample size needed to provide a margin of error of 3 or less with a 95% confidence level when the population standard deviation equals 11, we can use the following formula:

n = (Zα/2 * σ / E)²

where n is the sample size, Zα/2 is the critical value from the standard normal distribution corresponding to the desired confidence level (in this case, 1.96 for a 95% confidence level), σ is the population standard deviation, and E is the maximum margin of error.

Substituting the values given in the problem, we get:

n = (1.96 * 11 / 3)²

n = 72.85

Rounding up to the nearest whole number, we get a sample size of 73.

Therefore, to provide a margin of error of 3 or less with a 95% confidence level when the population standard deviation equals 11, we need a sample size of 73.

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Darcie can skip crocheting for a maximum of 59 days and still meet her goal of crocheting a minimum of 333 blankets for donation.

We can use the following inequality:

115151/15 * (60 - ss) ≥ 333

Simplifying the inequality further, we have:

7676(60 - ss) ≥ 333

459360 - 7676ss ≥ 333

-7676ss ≥ 333 - 459360

-7676ss ≥ -459027

Dividing both sides of the inequality by -7676 (and reversing the inequality sign):

ss ≤ -459027 / -7676

ss ≤ 59.8

Therefore, Darcie can skip crocheting for a maximum of 59 days (rounded down to the nearest whole number) and still meet her goal of crocheting a minimum of 333 blankets for donation.

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Answer:

(60 - s)(1/15) ≥ 3

Step-by-step explanation:

Her rate is 1/15 blanket per day.

In 60 days, she crochets 60 × 1/15 blankets.

If she skips s days of crocheting, she will crochet for 60 - s days.

She must crochet 3 or more blankets.

(60 - s)(1/15) ≥ 3

60 - s ≥ 45

-s ≥ -15

s ≤ 15

Solution: closed circle on 15 and shade to teh left.

Answer: The z-score of a bag of almonds weighing 12.2 ounces will be negative 1.5.

Step-by-step explanation:

1. The expected value is 9.848

2. The standard deviation is 9.848

3. The value of P(X<12) is -9.84

4. The value of P(8) is -6.23

To answer the questions regarding the exponential distribution with parameter λ = 1/9.848:

1. The expected value or mean of the exponential distribution can be calculated as;

E(X) = 1/λ

λ = 1 / 9.848

The expected value can be calculated as 9.848

2. The standard deviation of the exponential distribution can be calculated as 1/λ

σ = 1/λ = 9.848

3. P(X<12) can be calculated using cumulative distribution function of the exponential distribution.

The CDF can be calculated as;

[tex]f(x) = 1 - e^(^- \lambda ^x^)[/tex]

[tex]P(X < 12) = F(12) = 1 - e^(^-^(^1^/^9^.^8^4^8^) ^* ^1^2^) = -9.84[/tex]

4. To find P(X = 8), we need to calculate the probability density function (PDF) of the exponential distribution. Substituting the given value of λ = 1/9.848 and x = 8, we have:

[tex]P(X = 8) = f(8) = (1/9.848) ^* ^e^(^-^(^1^/^9^.^8^4^8^) ^* ^8^) =-6.23[/tex]

Note: The exponential distribution is continuous, so the probability of a single point is always zero. However, we can calculate the probability density at that point.

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Based on our analysis, options A and B satisfy the condition that the amount of time Mr. Jones jogs is inversely proportional to his jogging rate.

Therefore, the correct answer is:

A. 4 mph for 2.25 hours and 6 mph for 1.5 hours.

B. 6 mph for 1.5 hours and 5 mph for 1.25 hours.

To determine the correct option, we need to check if the rates and times given in each option satisfy the condition that the amount of time Mr. Jones jogs is inversely proportional to his jogging rate.

Inverse proportion means that if one variable increases, the other variable decreases in a consistent manner.

Let's examine each option:

A. 4 mph for 2.25 hours and 6 mph for 1.5 hours.

In this case, as the rate increases from 4 mph to 6 mph, the time decreases from 2.25 hours to 1.5 hours.

This satisfies the condition of inverse proportion.

B. 6 mph for 1.5 hours and 5 mph for 1.25 hours.

Here, the rate decreases from 6 mph to 5 mph, and the time decreases from 1.5 hours to 1.25 hours.

Again, this option satisfies the condition.

C. 5 mph for 2 hours and 4 mph for 3 hours.

In this case, the rate decreases from 5 mph to 4 mph, but the time increases from 2 hours to 3 hours.

This violates the condition of inverse proportion.

D. 4.5 mph for 3 hours and 6 mph for 4 hours.

Here, the rate increases from 4.5 mph to 6 mph, but the time also increases from 3 hours to 4 hours.

This violates the condition of inverse proportion.

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We can solve this problem by using a Venn diagram. Let's start by drawing two circles, one for Time and one for Newsweek:

```

   _________

 /           \

/             \

/_______________\

|               |

|               |

|               |

|               |

|               |

|     Time      |

|               |

|               |

|               |

|               |

|_______________|

\             /

 \           /

  \_________/

    Newsweek

```

Let x be the number of families that subscribe to both magazines. Then, we know that:

- 75 - x subscribe to Time only

- 50 - x subscribe to Newsweek only

- 5 subscribe to neither

We want to find the value of x. We know that the total number of families surveyed is 95, so:

Total = Time only + Newsweek only + Both + Neither

95 = (75 - x) + (50 - x) + x + 5

Simplifying the equation, we get:

95 = 130 - x

x = 35

Therefore, 35 families subscribe to both Time and Newsweek.

If the two angles shown are equal, the u and v are parallel.

So set the angles equal to each other, solve for x.

6x + 14 = 80

6x = 80-14

6x = 66

x = 11

So if x = 11, then lines u and v will be parallel.

Answer: X=11 because 80-14=66 and 66/6 is 11

To perform the indicated operations with the given expression, we need to follow the order of operations.

First, we need to simplify 6+3g in the denominator of the first fraction.

Then, we need to divide 10-5g by the result from the first step.

Finally, we need to multiply by the result of the fraction in the numerator.

So the solution is:

(10-5g)/((6+3g)/(5/12+6g))

We can simplify the denominator further by finding a common denominator for 5/12 and 6g. A common denominator is 12, so we multiply 5/12 by 1 = 12/12 and 6g by 2 = 24/12. Then we get:

(10-5g)/((6+3g)/(12/12+24g/12))

(10-5g)/((6+3g)/(36g+12)/12))

(10-5g)/(6+3g)*(12)/(36g+12)

(10-5g)/3(2+g)*12/12(3g+1)

(10-5g)/3(2+g)*(3g+1)

So the final solution is:

(10-5g)(3g+1)/(3(2+g))

or

(5g-10)(3g+1)/(3(g+2))

Chevrolet owners are more loyal than owners of different cars, at least based on this sample of 870 Chevrolet owners.

In order to determine if Chevrolet owners are more loyal than owners of different cars, we need to conduct a hypothesis test. Our null hypothesis (H0) would be that there is no significant difference in loyalty between Chevrolet owners and owners of different cars, while our alternative hypothesis (Ha) would be that Chevrolet owners are more loyal. To test this, we can use a one-sample proportion test, since we are comparing the proportion of Chevrolet owners who would buy another Chevrolet (56%) to the proportion of the general consumer population who are loyal to their automobile manufacturer (47%). Using a significance level of 0.05, we can calculate the test statistic and p-value. Our test statistic is: z = (0.56 - 0.47) / √((0.47 × 0.53) / 870) = 4.71
Our p-value is then calculated as the probability of obtaining a z-value of 4.71 or higher:
p = P(Z ≥ 4.71) ≈ 0
Since our p-value is less than 0.05, we reject the null hypothesis and conclude that there is evidence to support the alternative hypothesis. Therefore, we can say that Chevrolet owners are more loyal than owners of different cars, at least based on this sample of 870 Chevrolet owners.

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The integral of f(x,y) over the region 1 ≤ x²y² ≤ e⁴ is equal to 16e² ln(e²) - 16e² + 16.

To evaluate this integral, we need to first determine the limits of integration. Since we have the condition 1 ≤ x²y² ≤ e⁴, we can rewrite this as 1/x² ≤ y² ≤ e⁴/x², which gives us the limits for y. For x, we have the condition that x²y² ≤ e⁴, which can be rewritten as x² ≤ e⁴/y², giving us the limits for x.

Thus, the integral can be written as:

∫ ln(x²y²)/(x²y²) dy dx

Now, we can solve this integral by using techniques such as substitution or integration by parts. For simplicity, we can use the fact that ln(xy) = ln(x) + ln(y) and split the integral into two parts:

∫ ln(x) dy dx + ∫ ln(y) dy dx

Evaluating the first integral, we get:

∫ ln(x) [ln(e⁴/x²) - ln(1/x²)] dx

= 8∫(from 1 to e²) ln(x) dx

= 8[xln(x) - x] (from 1 to e²)

= 8e² ln(e²) - 8e² + 8

Evaluating the second integral, we get:

∫ ln(y) [ln(e⁴/x²) - ln(1/x²)] dx

= 8∫ ln(y) dx

= 8[e² ln(e²) - e² + 1]

Adding the two integrals together, we get:

8e² ln(e²) - 8e² + 8 + 8e² ln(e²) - 8e² + 8

= 16e² ln(e²) - 16e² + 16

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To answer the questions, let's first evaluate the given sets.

A = {a, b, c}

B = {c, d, e, f}

C = {1, 2, 3, 4}

D = {2, 3, 4, 5, 6}

Now, let's proceed with the calculations:

1. A - Bx(D - C)

  First, let's find (D - C):

  D - C = {2, 3, 4, 5, 6} - {1, 2, 3, 4} = {5, 6}

 Next, let's find Bx(D - C) (the Cartesian product of B and (D - C)):

  Bx(D - C) = {c, d, e, f} x {5, 6} = {(c, 5), (c, 6), (d, 5), (d, 6), (e, 5), (e, 6), (f, 5), (f, 6)}

 Finally, let's find A - Bx(D - C):

  A - Bx(D - C) = {a, b, c} - {(c, 5), (c, 6), (d, 5), (d, 6), (e, 5), (e, 6), (f, 5), (f, 6)} = {a, b, c}

 Therefore, A - Bx(D - C) = {a, b, c}.

2. AxC ∩ (AxD)

  First, let's find AxC (the Cartesian product of A and C):

  AxC = {a, b, c} x {1, 2, 3, 4} = {(a, 1), (a, 2), (a, 3), (a, 4), (b, 1), (b, 2), (b, 3), (b, 4), (c, 1), (c, 2), (c, 3), (c, 4)}

Next, let's find AxD (the Cartesian product of A and D):

  AxD = {a, b, c} x {2, 3, 4, 5, 6} = {(a, 2), (a, 3), (a, 4), (a, 5), (a, 6), (b, 2), (b, 3), (b, 4), (b, 5), (b, 6), (c, 2), (c, 3), (c, 4), (c, 5), (c, 6)}

 Finally, let's find AxC ∩ (AxD):

AxC ∩ (AxD) = {(a, 1), (a, 2), (a, 3), (a, 4), (b, 1), (b, 2), (b, 3), (b, 4), (c, 1), (c, 2), (c, 3), (c, 4)} ∩ {(a, 2), (a, 3), (a, 4), (a, 5), (a, 6), (b, 2), (b, 3), (b, 4), (b, 5), (b, 6), (c, 2), (c, 3

Learn more about cartesian product here:

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