Which graph shows the line y-1 = 2(x+2)?
A. Graph D
B. Graph A
C. Graph B
D. Graph C

Which Graph Shows The Line Y-1 = 2(x+2)?A. Graph DB. Graph AC. Graph BD. Graph C

Answers

Answer 1

Answer:

D. Graph C

Step-by-step explanation:

Step 1:  Identify the parts of the point-slope form to find the correct graph:

Currently, y - 1 = 2(x + 2) is in point-slope form, whose general equation is given by:

y - y1 = m(x - x1), where

(x1, y1) is one point on the line,and m is the slope.When (x1, y1) is plugged into the point-slope form, the sign of the actual coordinates becomes its opposite.  Thus, the coordinates of the point on the line y - 1 = 2(x + 2) is (-2, 1), while the slope is 2.Only Graph C C has the point (-2, 1).Furthermore, since slope is simply the change in y / change in x, we see that for every 2 units you rise (go up on the line), you run (go right on the line) 1 unit.

Related Questions



What is the solution of 1<2x+3<9?

(A) -1>x<2 (B)2

Answers

The solution to the inequality 1 < 2x + 3 < 9 is x > -1 and x < 2. Option (A) -1 > x < 2 is the correct answer.

To solve the inequality 1 < 2x + 3 < 9, we need to isolate the variable x.

First, subtract 3 from all parts of the inequality:

1 - 3 < 2x + 3 - 3 < 9 - 3

-2 < 2x < 6

Next, divide all parts of the inequality by 2, ensuring to flip the inequality signs when dividing by a negative number:

-2/2 > 2x/2 > 6/2

-1 > x > 3

Therefore, the solution to the inequality is x > -1 and x < 3. In the given options, option (A) -1 > x < 2 matches the solution, while option (B) 2 is not a valid solution to the inequality. Thus, the correct answer is option (A) -1 > x < 2.

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f) Roslyn's Jewelers sells watches for $50 each. During the next month, they estimate that they will sell 15,25,35, or 45 watches with respective probabilities of 0.35,0.25,0.20, and ... (figure it out). They can only buy watches in lots of ten from their dealer. 10,20,30,40, and 50 watches cost $40,39,37,36, and 34 per watch respectively. Every month, Roslyn's has a clearance sale and will get rid of any unsold watches for $24 (watches are only in style for a month and so they have to buy the latest model each month). Any customer that comes in during the month to buy a watch, but is unable to, costs Roslyn's $6 in lost goodwill. i) If the pay-offs are the cost of jewelers, set-up the payoff matrix for this problem. ii) If the pay-offs are the profit, set-up the pay-off matrix for this problem.

Answers

To set up the payoff matrix for this problem considering the cost of the jewelers, we need to calculate the cost for each combination of the number of watches sold and bought.

Let's denote the number of watches sold as S and the number of watches bought as B. The payoff matrix will have rows representing the possible values of S (15, 25, 35, 45) and columns representing the possible values of B (10, 20, 30, 40, 50).

The cost for each combination can be calculated as follows: If S = B, the cost is 50S since they can sell all the watches at the regular price.

If S > B, the cost is 50B + 6(S - B) since they sell B watches at the regular price and have S - B customers leaving with a goodwill cost of $6 each.

If S < B, the cost is 50S + 24(B - S) since they sell S watches at the regular price and have B - S unsold watches that they need to get rid of at $24 each.

(ii) To set up the payoff matrix considering the profit, we need to subtract the cost from the revenue for each combination. The revenue is calculated as the number of watches sold multiplied by the selling price of $50. The payoff matrix will have the same structure as in part (i), but the values will represent profits instead of costs

Please note that without the specified probability for selling 45 watches, it is not possible to provide specific numerical values for the payoff matrix. However, the structure and calculation method remain the same as described above.

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Solve each equation using the quadratic formula.

x(x-3)=4

Answers

The equation x(x - 3) = 4 has two solutions: x = 4 and x = -1, which can be found using the quadratic formula x = (-b ± √(b² - 4ac)) / (2a).

Let's first rewrite the equation in standard quadratic form: x² - 3x - 4 = 0. Here, a = 1, b = -3, and c = -4.

Using the quadratic formula, we can substitute these values into the formula and solve for x:

x = (-(-3) ± √((-3)² - 4(1)(-4))) / (2(1))

 = (3 ± √(9 + 16)) / 2

 = (3 ± √25) / 2.

Now, evaluating the square root, we have: x = (3 ± 5) / 2.

This gives us two possible solutions:

1. When x = (3 + 5) / 2 = 8 / 2 = 4.

2. When x = (3 - 5) / 2 = -2 / 2 = -1.

Therefore, the equation x(x - 3) = 4 has two solutions: x = 4 and x = -1.

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Can a pair of angles be supplementary and congruent? Explain your reasoning.

Answers

No, a pair of angles cannot be both supplementary and congruent.

Supplementary angles are two angles whose measures add up to 180 degrees. If two angles are supplementary, their sum is 180 degrees.

Congruent angles, on the other hand, have the same measure. If two angles are congruent, their measures are equal.

If a pair of angles were both supplementary and congruent, it would mean that their measures are equal and their sum is 180 degrees. However, this is not possible because if two angles have the same measure, their sum cannot be 180 degrees unless both angles are right angles (90 degrees).

In summary, a pair of angles cannot be both supplementary and congruent, as the conditions of being supplementary and congruent are contradictory.

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The ratio of the lengths of the diagonals of a quadrilateral is 1: 1 . The ratio of the lengths of the consecutive sides of the quadrilateral is 3: 4: 3: 5 . Classify the quadrilateral. Explain.

Answers

Based on the given ratios of diagonal and side lengths, the quadrilateral can be classified as a Rhombus.

To classify the quadrilateral based on the given information, we can analyze the properties of quadrilaterals and use the provided ratios.

The ratio of the lengths of the diagonals is 1:1. This indicates that the diagonals are congruent, meaning they have the same length. Diagonals that are congruent in a quadrilateral suggest that the shape may be a parallelogram or a rectangle.

The ratio of the lengths of the consecutive sides is 3:4:3:5. Let's assign these ratios to the respective sides of the quadrilateral:

Let side lengths be:

Side 1 = 3x

Side 2 = 4x

Side 3 = 3x

Side 4 = 5x

Since diagonals divide a quadrilateral into two triangles, we can consider each triangle formed by the consecutive sides of the quadrilateral.

Triangle 1: Side 1, Side 2, and the diagonal

Triangle 2: Side 3, Side 4, and the diagonal

In Triangle 1, the sides have lengths 3x, 4x, and x (diagonal).

In Triangle 2, the sides have lengths 3x, 5x, and x (diagonal).

Since the diagonals in both triangles are congruent (given as 1:1), we can equate the lengths of the diagonals in each triangle.

From Triangle 1: x = x

From Triangle 2: x = x

This implies that both triangles are isosceles triangles, where two sides (the consecutive sides) are equal in length.

Considering the properties of a quadrilateral with congruent diagonals and isosceles triangles formed by consecutive sides, the most likely classification for this quadrilateral is a Rhombus.

A rhombus is a special type of parallelogram where all sides are congruent. It also has diagonals that bisect each other at right angles.

In summary, based on the given ratios of diagonal and side lengths, the quadrilateral can be classified as a Rhombus.

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Write a cosine function for each description.amplitude 3 , period 2π

Answers

The cosine function with an amplitude of 3 and a period of 2π can be expressed as f(x) = 3cos(x).

In this equation, the cosine function is represented by cos(x), where x is the independent variable representing the angle. By multiplying the cosine function by 3, we introduce an amplitude of 3 to the function. The amplitude determines the maximum distance from the average value of the function. In this case, the function will oscillate between -3 and 3.

The period of the cosine function is given by 2π. The period represents the length of one complete cycle of the function. In this case, the function will complete one full cycle over an interval of 2π. This means that as x increases from 0 to 2π, the function will go through one complete oscillation, starting from its maximum value, decreasing to its minimum value, and returning back to the maximum value. The function will repeat this pattern for subsequent intervals of 2π.

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a. Write three trigonometric equations each with the complete solution π+2 π n .

Answers

The three trigonometric equations are:

1. Equation: sin(x) = -1

2. Equation: cos(x) = 0

3. Equation: tan(x) = 1

The three trigonometric equations, each with the complete solution of π + 2πn:

1. Equation: sin(x) = -1

  Solution: x = π + 2πn, where n is an integer.

2. Equation: cos(x) = 0

  Solution: x = π/2 + 2πn, where n is an integer.

3. Equation: tan(x) = 1

  Solution: x = π/4 + πn, where n is an integer.

In each equation, the solutions are given in the form π + 2πn, where n represents any integer.

This form accounts for all possible solutions that satisfy the equation.

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A pilot drops a bomb from a plane flying horizontally. where will the plane be located when the bomb hits the ground? group of answer choices

Answers

Neglecting air resistance, when the bomb hits the ground the horizontal location of the plane will be over the bomb.

Neglecting air resistance, when the bomb is dropped from a plane flying horizontally at a constant speed, the bomb will have both horizontal and vertical velocities. The horizontal velocity of the bomb will be the same as the plane's velocity since the bomb inherits the initial velocity of the plane. As a result, the bomb will continue moving horizontally with the same speed as the plane.

Since the plane and the bomb are moving together horizontally at the same speed, when the bomb hits the ground, the plane will be directly above the bomb.

Therefore, the horizontal location of the plane will be over the bomb.

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The complete question is:

A pilot drops a bomb from a plane flying horizontally at a constant speed. Neglecting air resistance, when the bomb hits the ground the horizontal location of the plane will

Answer

depend of the speed of the plane when the bomb was released.

depend of the mass of the bomb when it was released.

be behind the bomb.

be over the bomb.

be in front of the bom



Draw a valid conclusion from the given statements, if possible. Then state whether your conclusion was drawn using the Law of Detachment or the Law of Syllogism. If no valid conclusion can be drawn, write no valid conclusion and explain your reasoning.


Determine whether the stated conclusion is valid based on the given information. If not, write invalid. Explain.

Given: If an earthquake measures a 7.0 or higher on the Richter scale, then it is considered a major earthquake that could cause serious damage. The 1906 San Francisco earthquake measured 8.0 on the Richter scale.

Conclusion: The 1906 San Francisco earthquake was a major earthquake that caused serious damage.

Answers

The conclusion "The 1906 San Francisco earthquake was a major earthquake that caused serious damage." is valid. The 1906 San Francisco earthquake had a Richter scale rating of 8.0, which is higher than the 7.0 threshold for significant earthquake damage-causing force.

The given statement establishes a conditional relationship between an earthquake being regarded as a big earthquake that may cause significant damage and its Richter scale magnitude being at least 7.0.

The second claim, that the 1906 San Francisco earthquake reached 8.0 on the Richter scale, gives detailed details on the earthquake. We can infer that the 1906 San Francisco earthquake belongs to the category of earthquakes that are deemed major and capable of causing significant damage because its magnitude, at 8.0, is higher than the threshold of 7.0 established in the given statement.

As a result, the Law of Detachment is used to derive a conclusion, which is sound. When a conditional statement is satisfied and the hypothesis (antecedent) is true, we can reach a valid conclusion thanks to the Law of Detachment. The stated statement's condition is met in this instance by the earthquake measuring 8.0 on the Richter scale.

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At 12.5 percent interest, how long does it take to triple your money? Multiple Choice 11.53 years 10.36 years 9.33 years 10.56 years 14.33 years

Answers

To calculate the time it takes to triple your money at a 12.5 percent interest rate, we can use the formula for compound interest and we obtain the answer as 9.33(Approximately)

FV = PV * (1 + r)^n

Where FV is the future value, PV is the present value, r is the interest rate, and n is the number of compounding periods.

In this case, we want to find the value of n when the future value (FV) is three times the present value (PV). Let's assume the initial amount is $1.

3 * 1 = 1 * (1 + 0.125)^n

Simplifying the equation, we have:

3 = 1.125^n

To solve for n, we need to take the logarithm of both sides of the equation:

log(3) = n * log(1.125)

n = log(3) / log(1.125)

Using a calculator, we find that n is approximately 9.33 years.

Therefore, the correct answer is: 9.33 years.

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Why does an oblique solid not have a slant height?

Answers

An oblique solid, such as a prism or a pyramid, can indeed have a slant height.

The slant height refers to the distance between the apex (or top point) of the solid and any point on the lateral surface. It is commonly used when calculating the lateral area or total surface area of the solid.

However, it's important to note that the term "slant height" is more commonly associated with right solids, such as right pyramids or right cones. In these cases, the slant height specifically refers to the distance between the apex and a point on the lateral surface along a slanted line that is perpendicular to the base.

For oblique solids, instead of using the term "slant height," you might often encounter the terms "height" or "altitude" to describe the perpendicular distance between the base and the apex.

The height or altitude is used to calculate the volume and other properties of the solid. So while the term "slant height" may not be commonly used for oblique solids, they still possess a height or altitude measurement to describe their geometric properties.

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Emily rented a truck to move her belongings from her old apartment to her new apartment. The company charges a flat rental fee of $21.50 with an additional $0.50 for each mile driven. If the total cost was at most $121, how far did Emily drive to move her belongings to her new apartment?
A.
at least 199 miles
B.
at most 199 miles
C.
at least 60.5 miles
D.
at most 242 miles

Answers

To solve this problem, we can use the given information to set up an equation. Let's assume Emily drove x miles.

The cost of renting the truck is $21.50, and she is charged an additional $0.50 for each mile driven. So, the total cost can be expressed as:

Total cost = $21.50 + ($0.50 * x)

According to the question, the total cost was at most $121. Therefore, we can write the inequality:

$21.50 + ($0.50 * x) ≤ $121

Now, let's solve for x:

$0.50 * x ≤ $121 - $21.50
$0.50 * x ≤ $99.50
x ≤ $99.50 / $0.50
x ≤ 199

So, Emily drove at most 199 miles. Therefore, the correct answer is B.

Answer:

B.

at most 199 miles

Step-by-step explanation:

To find how many miles Emily drove, we need to use the equation

Total cost = flat fee + miles driven * cost per mile

Substituting in the numbers

121 ≥ 21.50 + m * .5

121≥ 21.50 +.50m

Subtract 21.50 from each side.

99.50 ≥ .5m

Divide each side by .5

199 ≥m

Emily drove less than or equal to 199 miles

Evaluate the quantity 3 squared times 3 to the power of negative 5 end quantity over 4 to the power of negative two.

Answers

The value of the given expression is approximately 0.5926

To evaluate the quantity 3 squared times 3 to the power of negative 5 end quantity over 4 to the power of negative two, we can simplify the expression step by step.
The expression can be written as:
[tex](3^2 * 3^(-5)) / (4^(-2))[/tex](3^2 * 3^(-5)) / (4^(-2))
To simplify this, we can use the laws of exponents.
First, let's simplify the exponents:
[tex]3^2[/tex] = 3 * 3 = 9
[tex]3^(-5) = 1 / (3^5)[/tex]
Next, let's simplify the denominator:
[tex]4^(-2) = 1 / (4^2) = 1/16[/tex]
Now, we can substitute the simplified values back into the expression:
[tex](9 * 1 / (3^5)) / (1/16)[/tex]
To divide fractions, we can multiply by the reciprocal of the second fraction:
[tex](9 * 1 / (3^5)) * (16/1)[/tex]
Now, let's simplify further:
9 * 16 = 144
[tex]3^5 = 3 * 3 * 3 * 3 * 3 = 243[/tex]
Substituting the values back into the expression:
(144 / 243) = 0.5926

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Consider the following LP: maxz=
s.t. ​
5x 1

+3x 2

4x 1

+2x 2

≤12
4x 1

+x 2

≤10
x 1

+x 2

≤4
x 1

,x 2

≥0

(a) Solve the LP graphically. (b) Solve the LP using the Simplex Method. (c) Identify all basic feasible solutions corresponding to each tableau of the Simplex Method and find the corresponding point in the graph. (d) Is the LP degenerate? Why? (e) Is the LP unboundend, does it have multiple optimal solutions or is the optimal solution unique? Use the final tableau to establish your answer.

Answers

By analyzing the final simplex tableau, we can establish whether the LP is unbounded, has multiple optimal solutions, or has a unique optimal solution.

(a) Solving the LP graphically:

First, let's graph the constraints:

5x1 + 3x2 ≤ 12

4x1 + 2x2 ≤ 10

x1 + x2 ≤ 4

x1, x2 ≥ 0

Plotting these constraints will create a feasible region bounded by the lines and the non-negativity constraints.

Next, we need to identify the corner points of the feasible region. To do this, we can solve each pair of intersecting lines to find the intersection points.

Once we have the corner points, we can evaluate the objective function z = 5x1 + 3x2 at each corner point to determine the optimal solution point that maximizes z.

(b) Solving the LP using the Simplex Method:

The initial simplex tableau is formed by adding slack variables to the constraints and setting up the objective function row.

After performing the simplex iterations, we can obtain the final simplex tableau and read the optimal solution from it.

(c) Identifying all basic feasible solutions corresponding to each tableau of the Simplex Method and finding the corresponding point in the graph:

In each tableau of the Simplex Method, the basic feasible solutions correspond to the variables that have a value of zero in the objective row.

For each tableau, we can identify the basic feasible solutions and their corresponding points in the graph by setting the non-basic variables to zero and solving for the basic variables.

(d) Determining if the LP is degenerate:

An LP is considered degenerate if there are multiple solutions that give the same optimal objective function value.

To determine if the LP is degenerate, we need to examine the final simplex tableau and check if there are multiple solutions with the same optimal objective function value.

(e) Establishing if the LP is unbounded, has multiple optimal solutions, or has a unique optimal solution:

We can determine if the LP is unbounded, has multiple optimal solutions, or has a unique optimal solution by examining the final simplex tableau.

If there is a column in the objective row with all negative values or a row with all non-positive values, the LP is unbounded.

If the optimal objective function value appears multiple times in the objective row, the LP has multiple optimal solutions.

If the optimal objective function value appears only once and there are no other non-positive values in the objective row, the LP has a unique optimal solution.

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If you invest $900 in a bank where it will earn 8 percent compounded annually, how much will it be worth at the end of seven years? Complete the steps below using cell references to given data or previous calculations. In some cases, a simple cell reference is all you need. To copy/paste a formula across a row or down a column, an absolute cell reference or a mixed cell reference may be preferred. If a specific Excel function is to be used, the directions will specify the use of that function. Do not type in numerical data into a cell or function. Instead, make a reference to the cell in which the data is found. Make your computations only in the green cells highlighted below. In all cases, unless otherwise directed, use the earliest appearance of the data in your formulas, usually the Given Data section. Given Data: Annual Interest Rate 8% Number of years 7 Money available for investing S900.00 Value of investment after 7 years

Answers

The investment will be worth approximately $1,546.45 at the end of 7 years. To calculate the value of the investment after 7 years, we can use the formula for compound interest:

Value = Principal * (1 + interest rate)^time

Given Data:

Principal (P) = $900

Annual Interest Rate (r) = 8% or 0.08

Number of years (t) = 7

Substituting the values into the formula, we have:

Value = $900 * (1 + 0.08)^7

Calculating the exponent:

(1 + 0.08)^7 = 1.08^7 ≈ 1.718279

Now we can calculate the value of the investment:

Value = $900 * 1.718279 ≈ $1,546.45

Therefore, the investment will be worth approximately $1,546.45 at the end of 7 years.

In this calculation, we used the compound interest formula, which takes into account the initial principal, the annual interest rate, and the number of compounding periods (in this case, 7 years). The interest is compounded annually, meaning that at the end of each year, the interest earned is added to the principal for the next year's calculation.

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Determine whether each set of numbers can be the measures of the sides of a triangle. If so, classify the triangle as acute, obtuse, or right. Justify your answer. 75. 13,30,35

Answers

The triangle with side lengths 13, 30, and 35 is an obtuse triangle.

Let's consider the set of numbers 13, 30, and 35.

For a triangle to exist, the sum of the lengths of any two sides must be greater than the length of the third side.

Checking the conditions:

1. 13 + 30 = 43, which is greater than 35. Condition satisfied.

2. 13 + 35 = 48, which is greater than 30. Condition satisfied.

3. 30 + 35 = 65, which is greater than 13. Condition satisfied.

All the conditions are satisfied, so these numbers can be the measures of the sides of a triangle.

To classify the triangle, we can determine the type based on the angles. We can use the Pythagorean theorem to determine if the triangle is right-angled.

In this case, we have:

13² + 30² = 169 + 900 = 1069

35² = 1225

Since 1069 is not equal to 1225, the triangle is not right-angled.

To determine if it is acute or obtuse, we can examine the cosine rule:

c²= a²+ b²- 2ab * cos(C)

where a, b, and c are the sides of the triangle, and C is the angle opposite to side c.

Calculating the value using the given lengths:

35²= 30²+ 13² - 2(13)(30) * cos(C)

1225 = 169 + 900 - 780 * cos(C)

1225 = 1069 - 780 * cos(C)

780 * cos(C) = 1069 - 1225

780 * cos(C) = -156

Since -156 is greater than 780, the cosine value is negative, indicating an obtuse angle.

Therefore, the triangle with side lengths 13, 30, and 35 is an obtuse triangle.

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Write an equation for a line perpendicular to y=−5x+5 and passing through the point (10,6).
y=

Answers

The equation of the line perpendicular to y = -5x + 5 and passing through the point (10, 6) is: y = ([tex]\frac{1}{5}[/tex])x + 4.

To find the equation of a line perpendicular to y = -5x + 5 and passing through the point (10, 6), we first need to determine the slope of the perpendicular line.

The given line has a slope of -5. Perpendicular lines have slopes that are negative reciprocals of each other. So, the slope of the perpendicular line will be [tex]\frac{1}{5}[/tex].

Now, using the point-slope form of a linear equation, we can write the equation of the line:

y - y₁ = m(x - x₁)

Using the point (10, 6) and the slope 1/5:

y - 6 = ([tex]\frac{1}{5}[/tex])(x - 10)

Simplifying the equation:

y - 6 = ([tex]\frac{1}{5}[/tex])x - 2

y = ([tex]\frac{1}{5}[/tex])x + 4

Therefore, the equation of the line perpendicular to y = -5x + 5 and passing through the point (10, 6) is y = ([tex]\frac{1}{5}[/tex])x + 4.

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If θ is in Quadrant I and sinθ=3/5 , what is an exact value of sin 2θ ?

(F) 9/25 (G) 24/25 (H) 6/5 (I) 73.7

Answers

An exact value of sin2θ is 24/25. Therefore, the correct answer is option (G).

The sin of an angle in Quadrant I is positive, so sinθ = 3/5. To find the exact value of sin 2θ, we can use the double-angle formula sin 2θ = 2(sinθ)(cosθ). Since θ is in Quadrant I, cosθ = 4/5. Plugging those values into our double-angle formula, we have:

sin 2θ = 2(3/5)(4/5)

= 24/25

Therefore, the correct answer is option (G).

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Which of the following three data sets is Cross sectional? a. BCAD data and links b. Demographic data c. Code cases

Answers

Among the three options provided, the cross-sectional data set is the demographic data. Correct option is B).

Cross-sectional data refers to a type of data that captures information about different individuals, entities, or units at a specific point in time. It provides a snapshot of a population or sample at a particular moment, allowing for comparisons and analysis of various characteristics or variables. In the case of demographic data, it typically includes information about individuals' age, gender, education level, income, and other demographic attributes. This data set does not capture changes or trends over time but rather provides a snapshot of the population's characteristics at a specific time.

On the other hand, the BCAD data and links could refer to data related to building codes, regulations, and their corresponding references, while code cases may refer to specific instances or examples of code violations or compliance. These data sets may be specific to certain incidents or cases and do not necessarily capture information about a population or sample at a particular point in time, making them less likely to be considered cross-sectional data.

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Find the perimeter of rectangle QRST. QT = 10. Round answer to the nearest tenth.

Answers

The perimeter of the given rectangle above which is QRST would be = 134.

How to calculate the perimeter of the given rectangle above?

Given that QT = 10 The Pythagorean formula should be used to calculate TS.

That is :

c² = a² + b²

where;

c = TS = ?

a=QS = 36√2

b = QT = 10

c² = (36√2)²+10²

= 2601+100

c =√2701

= 52

But QR = RS

using the sine rule;

a= QR=?

A= 45°

c= 36√2

C= 90°

a/sin45°=36√2/sin90°

That is;

a/sin45° = 51/1

a/0.707106781 = 51

a = 51×0.707106781

a= QR = RS = 36

The perimeter of the rectangle = 10+52+36+36 = 134

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Q and R are independent events. Find P(Q and R) . P(Q)=1/3, P(R)=6/7

Answers

The probability of the independent  events Q and R both occurring, P(Q and R)  is [tex]\dfrac{2}{7}[/tex] .

The possibility of occurrence of an event is called probability. Probability lies between 0 and 1.

[tex]Probability of an Event = \dfrac{Number of Favorable Outcomes}{ Total Number of Possible Outcomes}[/tex]

The events whose occurrence does not dependent on any other event are called  Independent events.

Example : If we flip a coin, we get either head or tail, here if we flip it again the next outcome is independent of the previous one.

According to question ;

[tex]P(Q and R) = P(Q) \times P(R)[/tex]

Substitute the values of [tex]P(Q) and P(R)[/tex]

[tex]P(Q and R) = \dfrac{1}{3} \times\dfrac{6}{7}[/tex]

On solving, we get,

[tex]P(Q and R) = \dfrac{6}{21}[/tex]

In lowest form, we get

[tex]P(Q and R) = \dfrac{2}{7}[/tex]

Therefore, the probability of the events Q and R both occurring, P(Q and R), is[tex]\dfrac{2}{7}[/tex].

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A horizontal line has points A , E, D. A line extends vertically from point E to point C and forms a right angle at C E D. A line extends up and to the left from point E to point B.
Which statement is true about the given information?

∠CED measures 45°.
∠CED measures 180°.
∠AEC measures 90°.
∠AEC measures 45°

Answers

Answer:

C. ∠AEC measures 90°

Step-by-step explanation:

The given information describes a horizontal line with points A, E, and D. A vertical line extends from point E to point C and forms a right angle at CED. A line extends up and to the left from point E to point B. The statement that is true about the given information is that ∠AEC measures 90° 1. Therefore, the correct answer is C. ∠AEC measures 90°.

Answer:

AEC measures 90°

Step-by-step explanation:

just did the review

Solve each equation using the Quadratic Formula. 2 x²+5 x=7 .

Answers

The solutions of a quadratic equation are,

⇒ x = 1 and x = - 7/2

We have to give that,

A quadratic equation is,

⇒ 2x² + 5x = 7

Now, By using the Quadratic formula, we get;

⇒ 2x² + 5x = 7

⇒ 2x² + 5x - 7 = 0

⇒ 2x² + 7x - 2x - 7 = 0

⇒ x (2x + 7) - 1 (2x + 7) = 0

⇒ (x - 1) (2x + 7) = 0

This gives two solutions,

⇒ x - 1 = 0

⇒ x = 1

⇒ 2x + 7 = 0

⇒ 2x = - 7

⇒ x = - 7/2

Therefore, The solutions are,

⇒ x = 1 and x = - 7/2

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Determine whether each function is an example of exponential growth or decay. Then, find the y -intercept. y=2.25(1/3) x

Answers

The y-intercept of the function [tex]y = 2.25(1/3)^x[/tex] is 2.25.

We have,

To determine whether the function [tex]y = 2.25(1/3)^x[/tex] represents exponential growth or decay, we can examine the base of the exponent.

In this case, the base is (1/3).

If the base is between 0 and 1, the function represents exponential decay.

If the base is greater than 1, the function represents exponential growth.

Since the base (1/3) is between 0 and 1, the function [tex]y = 2.25(1/3)^x[/tex]represents exponential decay.

Now, let's find the y-intercept.

The y-intercept occurs when x = 0.

Plugging in x = 0 into the function:

[tex]y = 2.25(1/3)^0[/tex]

y = 2.25(1)

y = 2.25

Therefore,

The y-intercept of the function [tex]y = 2.25(1/3)^x[/tex] is 2.25.

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Consider the function f(x)=10x-x². What type of function is f? Group of answer choices a linear function. an exponential function. a quadratic function. a logarithmic function.

Answers

The function f(x) = 10x - x² is a quadratic function.

A quadratic function is a polynomial function of degree 2, which means the highest power of the variable is 2. In the given function, the variable x is raised to the power of 1 in the term 10x, and it is raised to the power of 2 in the term -x². This indicates that the function is a quadratic function.

The general form of a quadratic function is f(x) = ax² + bx + c, where a, b, and c are constants. In the given function, a = -1, b = 10, and c = 0 (since there is no constant term). So, the function f(x) = 10x - x² fits the form of a quadratic function.

Quadratic functions are known for having a graph in the shape of a parabola. In this case, the parabola opens downward because the coefficient of the x² term is negative (-1). The graph of the function will have a vertex at the maximum point, which in this case is (5, 25).

Therefore, the function f(x) = 10x - x² is indeed a quadratic function.

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three cards are drawn without replacement from the 12 face cards (jacks, queens and kings) of an ordinary deck of 52 playing cards. let x be the number of kings selected and y the number of jacks selected.

Answers

The joint probability distribution function are;

P (Y = 3 | X = 1) = 1/55

P (Y = 2 | X = 2)  = 3/55

P (Y = 1 | X = 3)  = 12/55

P (Y = 0 | X = 4) = 1/220

To determine the joint probability distribution function, we have to find the probability of each possible outcome (x,y) for the random variables X and Y.

If X = 1, then select three cards of the same kind, that can only be a set of three jacks or three queens or three kings, or three aces.

P (Y = 3 | X = 1) = 4/220 = 1/55

If X = 2, then we are selecting two cards of one kind and one card of another kind. The first kind can be any of the four face card denominations, and the second kind can be any of the remaining three face card denominations. So, the number of possible sets is 4 × 3 = 12.

P (Y = 2 | X = 2) = 24/220 = 3/55

If X = 3, then we are selecting one card of each of three different kinds. The first kind could be any of the four face card denominations, the second kind could be any of the three remaining face card denominations, and the third kind can be any of the two remaining face card denominations.

P (Y = 1 | X = 3) = 1536/220 = 12/55

Finally, if X = 4, then we are selecting one card of each of the four different kinds, which could only be the four jacks.

P (Y = 0 | X = 4) = 1/220

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The complete question is

Three cards are drawn without replacement from the 12 face cards of an ordinary deck of 52 playing cards. Let X be the number of kinds selected and Y be the number of jacks selected. Find the joint probability distribution function.

If ac=150,BC=x,AB=2x what is the value of x

Answers

Answer:x=50

Step-by-step explanation:

Given directed line segment qs, find the coordinates of r such that the ratio of qr to rs is 3:5. plot point r. q(8,-5) s(-10,3)

Answers

The coordinates of R between points Q and R are (5/4, -2)

How to determine the coordinates of R

From the question, we have the following parameters that can be used in our computation:

Q(9, -5) and S(-10, 3)

We have the partition to be

m : n = 3 : 5

The coordinate is then calculated as

R = 1/(m + n) * (mx₂ + nx₁, my₂ + ny₁)

Substitute the known values in the above equation, so, we have the following representation

R = 1/8 * (3 * -10 + 5 * 8, 3 * 3 + 5 * -5)

Evaluate

R = (5/4, -2)

Hence, the coordinate is (5/4, -2)

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Read each question. Then write the letter of the correct answer on your paper. A and B are mutually exclusive events. Pa.= 1/3 and Pb.= 1/2 . What is P(A or B). ? a. 1/6 b. 2/3 c. 5/6 d. 1

Answers

Answer:

Step-by-step explanation:

To calculate the probability of the union of mutually exclusive events A and B (P(A or B)), we can use the formula:

P(A or B) = P(A) + P(B)

However, since events A and B are mutually exclusive, meaning they cannot occur simultaneously, the probability of their union is simply the sum of their individual probabilities.

Given that P(A) = 1/3 and P(B) = 1/2, we can calculate the probability of their union:

P(A or B) = P(A) + P(B)

         = 1/3 + 1/2

         = 2/6 + 3/6

         = 5/6

Therefore, the correct answer is c. 5/6.

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Write an equation for each translation. x²+y²=49 ; right 3 units and up 2 units

Answers

The translated equation of x² + y² = 49, moving right 3 units and up 2 units, is (x - 3)² + (y - 2)² = 49.



To translate the equation right 3 units and up 2 units,

we subtract 3 from the x-coordinate and 2 from the y-coordinate.

This is reflected in the translated equation by replacing x with (x - 3) and y with (y - 2). The equation (x - 3)² + (y - 2)² = 49 represents a circle with.

its center shifted 3 units to the right and 2 units up from the original circle x² + y² = 49.

The radius remains the same, as indicated by the constant value of 49.

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