Find the quotient of 1x10^-2 and 8x10^-2

Marcus is incorrect. The percentage increase in the time he spent doing homework this week compared to last week is 10%.

To determine if Marcus is correct, we need to calculate the percentage increase in the time he spent doing homework this week compared to last week.

First, we calculate the difference in hours:

11 hours - 10 hours = 1 hour

Then, we calculate the percentage increase:

(1 hour / 10 hours) x 100% = 10%

Therefore, Marcus is incorrect. The percentage increase in the time he spent doing homework this week compared to last week is 10%, not 110%.

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The distance Gary traveled to visit his brother is 2.1 x 10^2 times as much as the distance he traveled to visit his sister.

To determine how many times the distance to visit Gary's brother is compared to the distance to visit his sister, we'll follow these steps:

1. Identify the distances traveled:
  - Sister: 2 x 10^3 miles
  - Brother: 4.2 x 10^5 miles

2. Divide the distance to the brother by the distance to the sister:
  (4.2 x 10^5 miles) / (2 x 10^3 miles)

3. Simplify the expression:
  - First, let's divide the coefficients: 4.2 ÷ 2 = 2.1
  - Next, divide the exponents: 10^5 ÷ 10^3 = 10^(5-3) = 10^2

4. Combine the results:
  2.1 x 10^2

So, the distance Gary traveled to visit his brother is 2.1 x 10^2 times as much as the distance he traveled to visit his sister.

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For the function f(x) = x^2e^7x the critical numbers are 0 and -2/7 and using the First Derivative Test local minima at x = 0 and -2/7.

The function f(x) = x²e⁷ˣ

Differentiate the function f(x) with respect to x

f'(x) = 2xe⁷ˣ + 7x²e⁷ˣ

f'(x) = xe⁷ˣ(2 + 7x)

Now put f'(x) = 0 for critical points.

xe⁷ˣ(2 + 7x) = 0

x = 0                 2 + 7x = 0              e⁷ˣ ≠ 0

x = 0                 x = -2/7                e⁷ˣ ≠ 0

Hence, 0 and -2/7 are the critical points.

f'(x) = 2xe⁷ˣ + 14x²e⁷ˣ

Now f''(x) = 2e⁷ˣ + 14xe⁷ˣ + 28xe⁷ˣ + 98x²e⁷ˣ

f''(x) = 2e⁷ˣ + 42xe⁷ˣ + 98x²e⁷ˣ

f''(x) = 2e⁷ˣ(1 + 21x + 49x²)

Now f''(x) at x = 0

f''(0) = 2e⁷⁽⁰⁾(1 + 21(0) + 49(0)²)

f''(0) = 2(1 + 0 + 0)

f''(0) = 2 > 0

So f(x) has minima at x = 0

Local minima at x = 0 and y = 0.

Now f''(x) at x = -2/7

f''(0) = 2e⁻²(1 + 21(-2/7) + 49(-2/7)²)

f''(0) = 2e⁻²(1 - 6 + 4)

f''(0) = -2e⁻² < 0

f(x) has local minima at x = -2/7

Now y at x = -2/7 is

y = f(-2/7)

y = (-2/7)² e⁻²

y = 4/49e²

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The polynomial with roots of 1/4 and +5i in standard form is:

f(x) = x² - (1/4)x² + 25x - (25/4)

To write the polynomial with roots of 1/4 and +5i in standard form, we need to use the fact that the roots of a polynomial are related to its factors. Specifically, if r is a root of a polynomial, then x - r is a factor of the polynomial.

Therefore, if the roots of our polynomial are 1/4 and +5i, then we know that the factors of the polynomial are:

(x - 1/4) and (x - 5i) and (x + 5i)

To get the polynomial in standard form, we need to multiply out these factors and simplify.

(x - 1/4) and (x - 5i) and (x + 5i) = (x - 1/4) and (x² - 25i²)

= (x - 1/4) and (x² + 25)

= x³ + 25x - (1/4)x² - (25/4)

Therefore, the polynomial with roots of 1/4 and +5i in standard form is:

f(x) = x³ - (1/4)x² + 25x - (25/4)

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In perfect square form, the discriminant is either 0 or positive, since we took the square root of a positive number. Therefore, if a quadratic equation is in perfect square form, it either has one repeated solution or two distinct solutions.

To rewrite a quadratic equation in perfect square form, we use a process called completing the square.
Move the constant term (the number without a variable) to the right side of the equation.

Divide both sides by the coefficient of the squared term (the number in front of x^2) to make the coefficient 1.

Take half of the coefficient of the x term (the number in front of x) and square it. This will be the number we add to both sides of the equation to complete the square.
Add this number to both sides of the equation.
Rewrite the left side of the equation as a squared binomial.
Solve the equation by taking the square root of both sides.
Here are two examples to demonstrate this process:
1. Rewrite the equation [tex]2x^2 + 12x + 7 = 0[/tex] in perfect square form.
Move the constant term to the right side:
[tex]2x^2 + 12x = -7[/tex]
Divide by the coefficient of the squared term:
[tex]x^2 + 6x = -7/2[/tex]
Take half of the coefficient of x and square it:
[tex](6/2)^2 = 9[/tex]
Step 4: Add 9 to both sides:
[tex]x^2 + 6x + 9 = 2.5[/tex]
Rewrite the left side as a squared binomial:
[tex](x + 3)^2 = 2.5[/tex]
Solve by taking the square root:
x + 3 = +/- sqrt(2.5)
x = -3 +/- sqrt(2.5)
Since we get two distinct solutions, the quadratic equation has two solutions.
Rewrite the equation[tex]x^2 - 8x + 16 = 0[/tex] in perfect square form.
Move the constant term to the right side:
[tex]x^2 - 8x = -16[/tex]
Divide by the coefficient of the squared term:
[tex]x^2 - 8x + 16 = -16 + 16[/tex]
Step 3: Take half of the coefficient of x and square it:
[tex](8/2)^2 = 16[/tex]
Add 16 to both sides:
[tex]x^2 - 8x + 16 = 0[/tex]
Rewrite the left side as a squared binomial:
[tex](x - 4)^2 = 0[/tex]
Solve by taking the square root:
x - 4 = 0
x = 4
Since we get one repeated solution, the quadratic equation has only one solution.
Once a quadratic equation is written in perfect square form, we can quickly determine how many solutions it has by looking at the discriminant, which is the expression under the square root in the quadratic formula:
[tex](-b +/- \sqrt{(b^2 - 4ac)) / 2a }[/tex]
If the discriminant is positive, the quadratic equation has two distinct solutions.

If the discriminant is zero, the quadratic equation has one repeated solution.

If the discriminant is negative, the quadratic equation has no real solutions (but it may have complex solutions).

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The expanded form of the smallest bone in the human body located in the ear which is about 2. 8 millimeters in length is                                       2 × 1 millimeter + 8 × 0.1 millimeters.

Given that the smallest bone in the human body is the stapes bone. It is located in the ear and is about 2. 8 millimeters in length.

To write 2.8 millimeters in expanded form, we need to express each digit's place value in the number.

2.8 millimeters can be written as:

2 millimeters + 0.8 millimeters

or

2 millimeters + 8/10 millimeters

In expanded form, this is:

2 millimeters + 8 tenths of a millimeter

or

2 × 1 millimeter + 8 × 0.1 millimeters

Therefore, 2.8 millimeters in expanded form is:

2 × 1 millimeter + 8 × 0.1 millimeters = 2.0 + 0.8 = 2.8 millimeters

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Nick bought 11 apples for $9.79.

Nick paid $6.23 for 7 apples, and he bought 9 apples for $9.79.

Nick bought apples at a farmers market where 5 apples cost $4. 45. If Nick bought 7 apples, he paid $. To find the cost of one apple, we divide $4.45 by 5, which gives us $0.89 per apple.

For 7 apples, we multiply $0.89 by 7, which gives us $6.23.

To find the number of apples Nick bought for $9.79, we set up a proportion:

5 apples/$4.45 = x apples/$9.79

Solving for x, we get x = (9.79 × 5) / 4.45 ≈ 11

Therefore, Nick bought 11 apples for $9.79.

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Answer:b=30

Step-by-step explanation:

Alternate angles are the same so the angle opposite 30=125
125+30=155.but angles on a straight line=180
So we subtract 180-155 which leaves us with 25 for the top angle in the triangle.Angles in a triangle must add to 180 so we do, 125+25=150
180-150=30

The firm should produce 3.5 units to maximize profit, but the maximum profit is -$300, indicating the firm is operating at a loss.

To find the units of production that maximize profit, we need to first find the profit function by subtracting the cost function from the revenue function:

Profit = Revenue - Cost = R - C = 1400x - (700 + 1200x) = 200x - 700

Now, to find the units of production that maximize profit, we need to find the value of x that maximizes the profit function. We can do this by taking the derivative of the profit function with respect to x and setting it equal to zero:

d(Profit)/dx = 200 - 0 = 0

Solving for x, we get:

x = 3.5

Therefore, the firm should produce 3.5 units to maximize its profit.

To find the maximum profit, we can substitute the value of x back into the profit function:

Profit = 200x - 700 = 200(3.5) - 700 = -300

So the maximum profit is -$300, which means the firm is operating at a loss. This suggests that the firm should re-evaluate its production costs and revenue strategies to try and reduce costs or increase revenue in order to achieve a positive profit.

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The critical value z a/2 that corresponds to a 97% level of confidence is 1.96, and the critical value z a/2 that corresponds to an 80% level of confidence is 1.28.

In statistical hypothesis testing, the critical value is the point beyond which we reject the null hypothesis. To find the critical values, we need to use the standard normal distribution table or calculator.

For a 97% level of confidence, the significance level (α) is 0.03, and the critical value can be found by dividing α by 2 to get 0.015 (since it's a two-tailed test), and then finding the corresponding z-value using the standard normal distribution table or calculator. The z-value is 1.96.

Similarly, for an 80% level of confidence, the significance level (α) is 0.20, and the critical value can be found by dividing α by 2 to get 0.10 (since it's a two-tailed test), and then finding the corresponding z-value using the standard normal distribution table or calculator. The z-value is 1.28.

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The two-way table is of the class survey is:
                         Vanilla Ice Cream  |  Strawberry Ice Cream  |  Total
Chocolate Cake      |          12                   |             3                        |     15
Yellow Cake           |          11                   |             4                        |     15
Total                     |          23                   |             7                        |     30

A two-way table summarizing the data from Mrs. Robinson's class survey on cake and ice cream preferences can be constructed as follows.

1: Create a table with rows for Chocolate Cake and Yellow Cake, and columns for Vanilla Ice Cream, Strawberry Ice Cream, and Total.

2: Fill in the given information:

3: Complete the table using the given information:

So, the completed two-way table is:
                         Vanilla Ice Cream  |  Strawberry Ice Cream  |  Total
Chocolate Cake      |          12                   |             3                        |     15
Yellow Cake           |          11                   |             4                        |     15
Total                     |          23                   |             7                        |     30

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The Colorado hikers are at an altitude of 8753.1694 feet.

Here we have been given the equation T = -1. 83a + 212.

Here, T is the boiling point in Fahrenheit of water, while a is the altitude of the place.

We know that the campers in hiing in Colorado boil water for ea. The water boils at a temperature of 196°F, we need to find the altitude.

Here we are going to clearly take T = 196°F

Substituting the value in the above equation will give us

196 = - 1.83a + 212

Taking the variable to the Right Hand Side will give us

196 + 1.83a = 212

Taking 196 to LHS to separate the constant and variable will give us

1.83a = 212 - 196

Solving LHS gives us

1.83a = 16

Taking 1.83 to the other side will give us

a = 16/1.83

or, a = 8.7431694 thousands feet

= 8753.1694 feet

Hence, the Colorado hikers are at an altitude of 8753.1694 feet.

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The decision rule for rejecting the null hypothesis in this scenario is to reject the null hypothesis if the sample mean falls below a critical value determined by the level of significance and the population parameters.

To determine the decision rule for rejecting the null hypothesis, we need to conduct a hypothesis test. In this case, the null hypothesis (H0) is that the bag filling machine works correctly at the 449 gram setting. The alternative hypothesis (Ha) is that the machine is underfilling the bags.

Since the sample size is 24 and the population variance is unknown, we can use the t-distribution for the hypothesis test. With a level of significance of 0.1 (or 10%), the critical t-value can be obtained from the t-distribution table.

Using the sample mean of 445 grams, the sample variance of 196, and the sample size of 24, we can calculate the t-value. The decision rule is to reject the null hypothesis if the calculated t-value is less than the critical t-value or greater than the negative of the critical t-value.

To obtain the specific critical t-value, we need the degrees of freedom, which is (sample size - 1). In this case, it is 24 - 1 = 23. Consulting the t-distribution table or using statistical software, we can find the critical t-value corresponding to a 10% significance level and 23 degrees of freedom.

Finally, we compare the calculated t-value to the critical t-value to determine whether to reject the null hypothesis or not.

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The quadratic parent function is f(x) = x^2, which is a U-shaped curve that passes through the origin. When we apply transformations to the quadratic parent function, its shape and position change accordingly.

One of the most common transformations applied to the quadratic parent function is vertical translation, which shifts the entire graph up or down. If we add a constant k to the function, the graph is shifted k units up. Similarly, if we subtract a constant k from the function, the graph is shifted k units down.Another common transformation is horizontal translation, which shifts the entire graph left or right.

If we replace x with x + h in the function, the graph is shifted h units to the left. If we replace x with x - h, the graph is shifted h units to the right.These transformations can be combined to create a variety of different quadratic functions. Each transformation changes the position or shape of the graph in a specific way, allowing us to create complex and interesting functions from the simple quadratic parent function.

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Explanation is in the image!

Answer:

To simplify the given expression:

(7/2 x 5/3) + (1/6 x 3/2) - (12/8 x 4/3)

Step 1: Simplify the fractions within the parentheses first.

(35/6) + (1/4) - (48/24)

Step 2: Find a common denominator for all three terms. The least common multiple of 6, 4, and 24 is 24.

(35/6 x 4/4) + (1/4 x 6/6) - (48/24 x 1/1)

Step 3: Simplify the numerators using the common denominator.

(140/24) + (6/24) - (48/24)

Step 4: Combine the like terms.

98/24 or 4 1/6

Therefore, the simplified form of the expression is 4 1/6.

we can see that there is no stem value of 4 and therefore no department store with 49 pairs of glasses.

To find the largest number of pairs of glasses at any one department store, we need to examine the stem-and-leaf plot provided.

The stem-and-leaf plot shows the number of pairs of glasses at each store, with the first digit (the stem) indicating the tens place and the second digit (the leaf) indicating the ones place.

Looking at the plot, we can see that the largest stem is 4, which corresponds to the number 40. The largest leaf for stem 4 is 8, which corresponds to the number 48. Therefore, the largest number of pairs of glasses at any one department store is 48.

We can also verify this by scanning through the leaves in the plot and looking for the largest value. The largest leaf value is 9, which corresponds to the number 49. However, we can see that there is no stem value of 4 and therefore no department store with 49 pairs of glasses.

The largest number of pairs of glasses at any one department store is indeed 48.

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In factorization the needed observations and steps before you can factor a difference of two squares are binomial, two positive/negative, prime, multiply factors, and look for a GCF.

Finding the factors of a given number or statement is the process of factorization. Factorization is the process of taking a larger number or expression and turning it into a product of smaller numbers or expressions, or factors. The factors may be polynomials, integers, or other mathematical constructs.

Therefore, the needed observations and steps before you can factor a difference between two squares are:

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We can rewrite the integrand as follows:

1 / (2 + e^x + e^(-x))

To evaluate this integral, we use the substitution u = e^x:

du/dx = e^x

dx = du/u

Substituting u and dx in terms of u into the integral, we get:

∫ (1 / (2 + u + 1/u)) du

Multiplying the numerator and denominator by u, we get:

∫ (u / (2u + u^2 + 1)) du

Next, we complete the square in the denominator:

u^2 + 2u + 1 = (u + 1)^2

So, we can write:

∫ (u / ((u + 1)^2 + 1)) du

Now, we use the substitution v = u + 1:

dv/du = 1

du = dv

Substituting v and du in terms of v into the integral, we get:

∫ ((v - 1) / (v^2 + 1)) dv

Using partial fractions, we can write:

(v - 1) / (v^2 + 1) = A(v - i) + B(v + i)

where A and B are constants to be determined, and i = sqrt(-1).

Multiplying both sides by v^2 + 1 and simplifying, we get:

v - 1 = A(v - i)(v^2 + 1) + B(v + i)(v^2 + 1)

Substituting v = i, we get:

-i - 1 = A(0) + B(2i)

B = -(i + 1)/2i = (1 - i)/2

Substituting v = -i, we get:

i - 1 = A(-2i) + B(0)

A = (1 - i)/2i = (i - 1)/2

Therefore, we have:

(v - 1) / (v^2 + 1) = [(i - 1)/(2i)](v + i) - [(1 - i)/(2i)](v - i)

Substituting back for v, we get:

(u / ((u + 1)^2 + 1)) = [(i - 1)/(2i)][(u + 1) + ie^x] - [(1 - i)/(2i)][(u + 1) - ie^x]

Substituting this expression back into the integral and simplifying, we get:

∫ (1 / (2 + e^x + e^(-x))) dx = [(i - 1)/(2i)]*ln(e^x + e^(-x) + 2) - [(1 - i)/(2i)]*ln(e^x - i) + C

where C is the constant of integration.

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Answer: 50

Step-by-step explanation:

37 is 74 percent of what number

We already have our first value 37 and the second value 74. Let's assume the unknown value is Y which answer we will find out.

As we have all the required values we need, Now we can put them in a simple mathematical formula as below:

STEP 1   37 = 74% × Y

STEP 2   37 = 74/100× Y

Multiplying both sides by 100 and dividing both sides of the equation by 74 we will arrive at:

STEP 3     Y = 37 × 10074

STEP 4     Y = 37 × 100 ÷ 74

STEP 5     Y = 50

Finally, we have found the value of Y which is 50 and that is our answer.

Note that in order to map A onto B, Kyle would have to dilate the given figure by a scale factor or 3.

The scale factor is a metric for figures with similar appearances but differing scales or measurements. Assume two circles appear similar but have different radii. The scale factor specifies how much larger or smaller a figure is than the original figure.

The original point of figure A which has 4 points are

(0,02)

(-1, 2)

(0, 1)

(1, 2)

Multiply all th e points by 3, and you get,

(0,02) x 3 = (0, -6) =

(-1, 2) x 3 = (-3, 6)

(0, 1) x 3 = (0, 3)

(1, 2) x3 = (3, 6)

Plotting the new values will give us the transformation (dilation) required. See the attached image.

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The total area on which the dart may land is 530.93 square units

The dart is a circle and hence the calculations will be accomplished using formula pertaining to a circle.

The circumference of a circle (dart) is given by the formula below

C = 2 * π * r

where

C is the circumference

π = pi is a constant term and

r is the radius.

26π = 2πr

Dividing both sides by 2π, we get:

r = 13

Area of the dart (circle)

A = πr²

A = π * (13)²

A = 169π (in terms of pi)

A = 530.93 square units (to 2 decimal place)

Therefore, the total area on which the dart may land is 169π square units.

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Mr. Agber needs to employ 48 workers to cultivate his 8 acres of farmland in 6 days. The exact relationship between the parameters is W × D = K × L, and the constant (K) in this case is 36.

To solve this problem, we can use the concept of direct variation. The relationship between the number of workers, the size of the land, and the number of days can be expressed as follows:

Number of Workers (W) × Number of Days (D) = Constant (K) × Size of the Land (L)

In Mr. Agber's case, we know the initial situation is:

20 workers × 9 days = K × 5 acres

To find the constant, K, we can rearrange the equation:

K = (20 workers × 9 days) / 5 acres
K = 180 / 5
K = 36

Now that we have the constant, we can use it to determine the number of workers needed for the 8 acres of land in 6 days:

W × 6 days = 36 × 8 acres

Again, rearrange the equation to find the number of workers, W:

W = (36 × 8 acres) / 6 days
W = 288 / 6
W = 48 workers

So, Mr. Agber needs to employ 48 workers to cultivate his 8 acres of farmland in 6 days. The exact relationship between the parameters is W × D = K × L, and the constant (K) in this case is 36.

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The probability of Paulina getting injured in either volleyball or soccer is 0.19.

To find the probability of Paulina getting injured in either volleyball or soccer, we can use the formula:

P(Volleyball or Soccer) = P(Volleyball) + P(Soccer) - P(Volleyball and Soccer)

We are given that the probability of Paulina getting injured playing volleyball is 0.1, and the probability of her getting injured playing soccer is 1/10 = 0.1 as well. However, we are not given any information about whether these events are independent or not, so we cannot assume that P(Volleyball and Soccer) is equal to the product of P(Volleyball) and P(Soccer).

If we assume that the events are independent, then we can calculate P(Volleyball and Soccer) as:

P(Volleyball and Soccer) = P(Volleyball) * P(Soccer) = 0.1 * 0.1 = 0.01

Then, using the formula above, we can calculate the probability of Paulina getting injured in either volleyball or soccer as:

P(Volleyball or Soccer) = 0.1 + 0.1 - 0.01 = 0.19

Therefore, the probability of Paulina getting injured in either volleyball or soccer is 0.19, assuming that the events are independent.

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You can collect data on the heights of all female athletes on a team using recent international sporting event and This data can be gotten by using official event records or by carrying out  a survey of the athletes. Heights are said to be measured in centimeters (cm) or feet and inches (ft, in).

To address this question, you can gather information regarding the quantity of school staff members who are passionate about football and compare it against the full count of school staff members.  Gathering this information is possible through either conducting a survey or analyzing the number of tickets sold for school football games. The information can be shown using ratio or a percentage.

How long do drivers generally need to wait at a red light in Washington, DC

One can get information on the durations motorists must wait at various traffic signals in Washington, DC. One can ask this information by either installing sensors or cameras at different intersections or by gathering input from drivers through a survey. The duration of waiting periods is commonly quantified in units of seconds (s) or minutes (min).

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The postulate or theorem that can be used to prove that ΔABC ≅ ΔDCB is the "Side-Side-Side (SSS) theorem".

Hence, the correct option is A.

Since in both triangles ΔABC and ΔDCB, we have

Therefore, by SSS theorem, we can conclude that ΔABC ≅ ΔDCB.

Hence, the correct option is A.

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When Kimberly rolls two six-sided number cubes numbered 1 through 6, it creates 36 possible outcomes which is represent in the tree diagram below

A tree diagram is a visual representation of outcomes. It consists of branches that represent the possible outcomes of each step.

When it comes to Kimberly rolling two six-sided number cubes, we can start by rolling the first cube, and then rolling the second cube.

For each roll of the first cube, there are six possible outcomes (1 to 6). For each outcome of the first cube, there are six possible outcomes for the second cube.

This results in a total of 6 x 6 = 36 possible outcomes.

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Answer:

Set A: 1, 7, 10, 17, 20

Range: 19

Mean: 11

Set B: 10, 12, 16, 17, 18

Range: 8

Mean: 14.6

How to find...

Mean: Divide the sum of all values in a data set by the number of values.

Range: Find the largest observed value of a variable (the maximum) and subtract the smallest observed value (the minimum).

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Answer: (1,9) and x=1

Step-by-step explanation: vertex is also known as the turning point of the graph, which is the point at which the gradient of the graph changes sign in this case it is the coordinate (1,9)

axis of symmetry is an equation of a line which will split the graph into two symmetrical parts as in two parts that can reflected and laterally inverted showing no changes. in this case, the line would pass through the vertex vertically which is the line with a gradient of 1 not passing the through the y axis so it equals x=1