1) Given a sample of lifetime of the light bulbs X1, X2, X3,. X36) with LX =1800 hours, ›X2-90560 and level of confidence c = 95%. Find the Point Estimate X =

The lateral area of the pyramid is 512√3 in.

Area is the region bounded by plane shape.

To calculate the area of the pyramid, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these value into equation 1

Hence, the right option is D. 512√3 in.

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Answer:

7.6

Step-by-step explanation:

when trying to find the mean of a data set
you begin by finding the sum of all the numbers.
3+5+15=23. Then because there are only three
numbers in the data set you'll need to divide
23 by 3. 23 / 3 = 7.6.

The length of the arcs are calculated to the nearest hundredth as:

12. 14.03 meters      13. 6.91 meters

The formula used to find the length of a an arc is: length of arc = ∅/360 * 2πr, where ∅ is the central angle measure and r is the radius of the circle.

Length of arc XW:

∅ = m<XZW = 180 - 113

∅ = 67 degrees

r = 24/2 = 12 meters

Plug in the values:

length of arc XW = 67/360 * 2 * π * 12 ≈ 14.03 meters

Length of arc XW:

∅ = m<YVU = 180 - 67 - 80

∅ = 33 degrees

r = 24/2 = 12 meters

Plug in the values:

length of arc YVU = 33/360 * 2 * π * 12 ≈ 6.91 meters

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The 95% confidence interval for the difference in proportions is approximately 0.0957 to 0.4977.

To find the 95% confidence interval for the difference in proportions between Michigan and New York commuters who drove alone to work, we can use the formula:

CI = (p1 - p2) ± Z * sqrt((p1 * (1 - p1) / n1) + (p2 * (1 - p2) / n2))

Where:

p1 and p2 are the proportions of Michigan and New York commuters who drove alone to work, respectively.

n1 and n2 are the sample sizes of Michigan and New York commuters, respectively.

Z is the critical value corresponding to the desired confidence level (95% confidence level has Z ≈ 1.96).

Given:

Michigan: p1 = 78/100 = 0.78, n1 = 100

New York: p2 = 58/120 = 0.4833, n2 = 120

Plugging in the values:

CI = (0.78 - 0.4833) ± 1.96 * sqrt((0.78 * (1 - 0.78) / 100) + (0.4833 * (1 - 0.4833) / 120))

CI = 0.2967 ± 1.96 * sqrt(0.006456 + 0.004074)

CI = 0.2967 ± 1.96 * sqrt(0.01053)

CI ≈ 0.2967 ± 1.96 * 0.1026

CI ≈ 0.2967 ± 0.201

The 95% confidence interval for the difference in proportions is approximately 0.0957 to 0.4977.

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The  recursive formula of g(n)  g(1) = -50 and g(n) = g(n-1) - 15

g(n) = g(n-1) - 15

Start with the given formula: G(n) = -50 - 15n

To find the recursive formula, we need to find the value of g(n) in terms of g(n-1).

To do this, we can subtract 15 from both sides of the equation:

G(n) - 15 = -50 - 15n - 15

Simplifying the equation, we get:

G(n) - 15 = -65 - 15n

Rearranging the equation, we get:

G(n) = -65 - 15n + 15

Now, we can substitute g(n-1) for -65 - 15n:

G(n) = g(n-1) - 15

Finally, we can find the value of g(1) by substituting n = 1 into the original equation:

G(1) = -50 - 15(1)

G(1) = -50 - 15

G(1) = -65

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Complete question is also attached below:/

G(n)=−50−15n  complete the recursive formula of g(n)

g(1)=

g(n)=g(n−1) +=

The height of the pyramid is 12 units

To find the height of the pyramid, we need to use the formula for the volume of a pyramid,

V = (1/3) * B * h,

where V is the volume, B is the area of the base, and h is the height of the pyramid.

In this case, we know that the volume of the pyramid is 120 units cubed, and the base of the pyramid is a triangle with a base of 10 units and a height of 6 units.

Therefore, the area of the base is,

(1/2) * 10 * 6 = 30 square units.

Plugging these values into the formula for the volume of a pyramid, we get:

120 = (1/3) * 30 * h

Multiplying both sides by 3, we get:

360 = 30 * h

Dividing both sides by 30, we get:

h = 12

Therefore, the height of the pyramid is 12 units.

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Answer:

Step-by-step explanation:

f(x) = x + 3

g(x) = 2x + 1

g(g(-3)) = g(-5) = -9

f(g(x) = f(2x + 1) = 2x + 1 + 3 = 2x + 4

g(f(x) = g(x + 3) = 2(x + 3) + 1 = 2x + 7

Answer:

10%

Step-by-step explanation:

P(reading paper 'given' that they are <40)

= P(reading paper AND < 40) / P(< 40)

= (4/80) / (40/80)

= 4/40

=1/10

=0.1

=10%

The inequality x ≤ -5 or x ≥ 3 in interval notations is (-∞, -5] ∪ [3, ∞)

Inequality is the  relationship between two expressions or values that are not equal to each other

The inequality x ≤ -5 or x ≥ 3 represents the solution set of all real numbers less than or equal to -5 or greater than or equal to 3.

The  interval notation of the given inequality is (-∞, -5] ∪ [3, ∞)

The closed brace means the number is included and open bracket doesnot includes a number

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The perimeter of the plot land is 78.49 units and the area of the plot land without the building and parking lot is 210 square units

From the graph, the vertices of the land are

A = (0, 20), B = (25, 19), C = (20, 2) and D = (5, 0)

Calculate the distance between adjacent vertices

So, we have

AB = √[(0 - 25)² + (20 - 19)²] = 25.02

BC = √[(20 - 25)² + (2 - 19)²] = 17.72

DC = √[(20 - 5)² + (2 - 0)²] = 15.13

AD = √[(0 - 5)² + (20 - 0)²] = 20.62

The perimeter of the plot land is

P = 25.02 + 17.72 + 15.13 + 20.62

P = 78.49 units

This is calculated as

Area = Plot land - Building - Parking lot

Using the vertices, we have

Area = 1/2 * |0 * 19 + 25 * 2 + 20 * 0 + 5 * 20 - (20 * 25 + 19 * 20 + 2 * 5 + 0 * 0)| - [1/2 *(15 - 7 + 17 - 7) * (15 - 10)] - [(18 - 10) * (10 - 5)]

This gives

Area = 295 -  45 - 40

So, we have

Area = 210

Hence, the area is 210 square units

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Answer:

The roots of this function are at -4 and -1.

f(x) = (2x + 8)(-2x - 2)

= (2x + 8)(-2x + (-2))

The conclusion can be determined from the dot plot is

The median of the data set is 10.

1. The number of observations is 10:

There are total 15 observations.

2. The median of the data set is 10.

From the dot plot the data is

9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 12

Thus, the median is 10.

3. Mean = Sum of observation / Total Number of observation

Mean = (9+9+9+9+9+10+10+10+10+10+10+11+11+11+12) /15

Mean= 150/15=10

Thus, the Mean is 10.

4. Range = 12 - 9

Range = 3.

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A kilogram of strawberry taffy costs $4, and a kilogram of banana taffy costs $7.

Let us assume

the price of 1 kg strawberry taffy  = $x

And the price of 1kg banana taffy = $y

Then according to given information

the expression for Jon be,

4x + y = 23  ....(i)

the expression for Charlotte be,

5x + 2y = 34 ...(ii)

Now use elimination method

2x(i) - (ii) we get,

3x = 12

 x = 4

Plug it into (i) we get

y = 7

Hence, costs are:

1 kg strawberry taffy  = $4

1kg banana taffy = $7

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The  approximate area and circumference of the circle is given as 201 inch² and 20 inch respectively

A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the center. Equivalently, it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant

The area and perimeter of a circle can be calculated using the formula

πr = πd, where r is the radius and d is the diameter of the circle

Area = πr² and

the perimeter is 2πr

r= 8 inch, π = 3.14

Area = 3.14 * 8 * 8

Area = 200.96 square inches

Area = 201 inch²

the perimeter is = 2*3.14*8

The perimeter is = 50.24 square inches

Perimeter = 50 inch

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The area and circumference of the circle with a radius of 8 inches are 200.96 square inches and 50.24 inches respectively.

A circle is simply a closed 2-dimensional curved shape with no corners or edges.

The area of a circle is expressed mathematically as;

A = πr²

The circumference of a circle is expressed as:

C = 2πr

Where r is radius and π is constant pi ( π = 3.14 )

Given that the radius of the circle is 8 inches.

Substituting this value into the formula, we get:

A = πr²

A =  3.14 × ( 8 in )²

A =  3.14 × 64 in²

A = 200.96 in²

Next, we calculate the circumference:

C = 2πr

C = 2 × 3.14 × 8 in

C = 50.24 in

Therefore, the value of the circumference is 50.24 in.

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The area of the rectangle is 32 square units, the area of each triangle is 6 square units, and the Total area is 44 square units.

1. The rectangle, which has a length of 8 units and a width of 4 units.

2. The two triangles, which are identical and have a base of 4 units and a height of 3 units.

To find the area of the rectangle, we can use the formula:

Area = Length x Width

Area = 8 x 4 = 32 square units

To find the area of each triangle, we can use the formula:

Area = 1/2 x Base x Height

Area = 1/2 x 4 x 3 = 6 square units

So, the total area of both triangles is:

Total area = 6 + 6 = 12 square units

Now, to find the total area of the figure, we can add the areas of the rectangle and the two triangles:

Total area = Area of rectangle + Total area of triangles

Total area = 32 + 12 = 44 square units

Therefore, the area of the rectangle is 32 square units, the area of each triangle is 6 square units, and the total area is 44 square units.

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The coordinates of the triangle A'B'C' after rotating triangle ABC 90 degrees clockwise are A'(3, 6), B'(3, 2), and C'(7, 4).

To rotate the points of a triangle 90 degrees clockwise, we can use the following formula for a 2D rotation:

x' = x cos(θ) + y  sin(θ)

y' = -x  sin(θ) + y  cos(θ)

Let's apply this formula to each point of the triangle ABC:

For point A(-6, 3):

x' = -6  cos(90°) + 3  sin(90°) = -6 (0) + 3(1) = 3

y' = -(-6)  sin(90°) + 3  cos(90°) = 6 (1) + 3 (0) = 6

So, point A' is (3, 6).

For point B(-2, 3):

x' = -2 cos(90°) + 3 sin(90°) = -2 .0 + 3. 1 = 3

y' = -(-2) sin(90°) + 3 cos(90°) = 2 .1 + 3 .0 = 2

So, point B' is (3, 2).

For point C(-4, 7):

x' = -4 cos(90°) + 7 sin(90°) = -4 .0 + 7 . 1 = 7

y' = -(-4) sin(90°) + 7 cos(90°) = 4.1 + 7 .0 = 4

So, point C' is (7, 4).

Therefore, the coordinates of the triangle A'B'C' after rotating triangle ABC 90 degrees clockwise are A'(3, 6), B'(3, 2), and C'(7, 4).

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Answer:

904.78 [tex]in^{3}[/tex]

Step-by-step explanation:

The volume formula for a sphere is the following:
[tex]v=\frac{4}{3} \pi r^{3}[/tex]
[tex]d = 2r[/tex]
Replace with values and the answer is 904.78

The value of x is 780 and 830 + 50 equals 880

The number of coaches is 17 and the total cost is £5850

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

830 + 50 gives the same answer as x + 100

This means that

830 + 50 = x + 100

So, we have

x = 830 + 50 - 100

Evaluate

x = 780

Also, we have

830 + 50 = 880

So, the value of x is 780 and 830 + 50 equals 880

Here, we have

People = 830

People per coach = 50

So, we have

Coaches = 830/50

Evaluate

Coaches = 16.6

Approximate

Coaches = 17

The total cost of hiring 13 coaches is

Cost = 450 * 13

Evaluate

Cost = 5850

Hence, the number of coaches is 17 and the total cost is £5850

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The trigonometric ratio in terms p are

cos 200 = -p

- sin 70 = -p.

To express each of the given trigonometric values in terms of p:

Since the cosine of 0° is equal to 1, we can say that cos 0° = p.

cos 200°: Using the identity

cos(180° + θ) = -cos(θ), we can rewrite

cos 200° = -cos(180° + 20°).

Since cos 20° = p, we can express cos 200° as -p.

sin(-70°): Using the identity

sin(-θ) = -sin(θ), we can rewrite

sin(-70°) as -sin(70°)

=- sin (90- 20)

=  - cos 20

= -p

sin 10°: Since sin 10° is not related to p, we cannot express sin 10° in terms of p.

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Answer:

y = 5(x - 3)^2 - 4 + c

Step-by-step explanation:

The standard form of a quadratic function is y = ax^2 + bx + c, where a, b, and c are constants. To shift the graph three units to the right and four units down, we can modify the constant term c and the linear term bx:

y = a(x - 3)^2 - 4 + c

To make it five times narrower, we can modify the coefficient of the squared term a:

y = (1/5)a(x - 3)^2 - 4 + c

Since we want the shape to be the same as y = x^2, we can set a = 5:

y = 5(x - 3)^2 - 4 + c

The value of c will depend on the specific context of the problem or graph.

Answer:

The length of the hypotenuse is 100.

Step-by-step explanation:

To find the length of the hypotenuse, we use the following formula:

c=[tex]\sqrt{a^2+b^2}[/tex]

c=[tex]\sqrt{28^2+96^2}[/tex]

c=[tex]\sqrt{10,000}[/tex]

c=100

Therefore, the length of the hypotenuse is 100.

Step-by-step explanation:

Each ordered pair on the line represents the weight of an astronaut with the shuttle space suit, given in pounds, and the total weight of the shuttle space suit and life support system, also given in pounds.

Let x represent the weight of the astronaut without the shuttle suit, and let y represent the weight of the astronaut with the shuttle suit and life support system. Then the equation for the relationship shown in the graph is: y = x + 310.

No, this is not a proportional relationship because the slope of the line is not constant. In a proportional relationship, the ratio of y to x would always be the same, but in this case, the ratio changes depending on the value of x.

No, not all the points on the line make sense in the context of the problem situation. For example, the point (0, 310) would represent an astronaut with no weight without the shuttle suit, which is not physically possible. Also, the point (480, 790) would represent an astronaut with a weight of 480 pounds without the suit, which is also not physically possible. Therefore, we need to restrict the domain of the equation to make sense in the context of the problem situation.

To determine the weight of an astronaut without the shuttle suit, we need to solve the equation y = x + 310 for x, given that y = 480. Substituting y = 480 into the equation, we get: 480 = x + 310. Solving for x, we get: x = 170. Therefore, the weight of the astronaut without the shuttle suit is 170 pounds.

The variable a can take infinite many values (including 0)

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

-12a < -2a

This expression can be expressed as

-2a > -12a

Divide both sides by -2a

So, we have

1 < 6

The above expression is true

This means that the variable a can take infinite many values (including 0) i.e. 0 is a subset of a

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Step-by-step explanation:

the answer is 3

the answer is 3

Answer:

3

Step-by-step explanation:

explanation

f(x) =2x + 1 and g(x) = [tex]x^{2}[/tex]- 7

Thus, we have:

(g/f ) (x) = g(x) / f(x) =  [tex]x^{2}[/tex]-7 ÷ 2x ÷ [tex]x^{2}[/tex] + 1

1) Equation for the parabola y = - x² + 36.

2) A drone is in the distance, flying upward in a straight line. It intersects the rainbow at two points. Choose the points where your drone intersects the parabola and create a table of at least four values for the function.

The points of intersection will be: (0,36) and (4, 20)

Table of values for a linear function and the parabola

x        linear function      parabola y = - x² + 36

0        36                                  (0)² + 36 = 36

1        32                                  - (1)² + 36 = 35

2        28                                  - (2)² + 36 = 32

3        24                                   -3² + 36 = 27

4        20                                   -4² + 36 = 20

It is a linear function because the rate of change is constant: for each increase of 1 unit in x, there is a decrease of 4 units in y: ⇒ slope = - 4

Remember to include the two points of intersection in your table. Analyze the two functions; they are there (0,36) and (4, 20)

Answer the following reflection questions in complete sentences. What is the domain and range of the rainbow?

Explain what the domain and range represent. Do all of the values make sense in this situation? Why or why not? What are the x- and y-intercepts of the rainbow? Explain what each intercept represents.

The domain is all the real values of x between - 6 and 6: - 6 ≤ x ≤ 6

The range is all the values between 0 and 36: 0 ≤ y ≤ 36

The domain represents the horizontal distance between the extremes of the rainbow at the ground.

The range represents: the altitude of the rainbow from the ground (y = 0). The height is at x = 0, y = 36.

The x-intercepts are - 6 and 6, that is the opening of the rainbow at the ground level.

The y-intercept is when x = 0, it is y = 36, and is the height of the rainbow.

Is the linear function you created positive or negative? Explain. What are the solutions or solution to the system of equations created? Explain what it or they represent.

The linear function is positive and decreasing. It is positive because it goes above the x-axis, this is y ≥ 0.

The solutions were already signaled: (0,6) and (4, 20). They are the points at which the drone intercepts the rainbow.

The word problem that exemplifies a linear function is

- Angie's swimming classes required a $50 enrollment fee and a $10 safeguard insurance cost each month.

Option A is the correct answer.

We have,

A linear function is a mathematical model that represents a relationship between two variables that is a straight line.

In this problem,

The cost of Angie's swimming classes is a linear function of the number of months.

The enrollment fee of $50 is a fixed cost that does not depend on the number of months, and the safeguard insurance cost of $10 per month is a variable cost that increases linearly with the number of months.

Thus,

The word problem that exemplifies a linear function is

- Angie's swimming classes required a $50 enrollment fee and a $10 safeguard insurance cost each month.

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Where the rules is  is y = |x|  the graph for y+x and y = -x will become the graph for y+x and y = x. Because x has to become an absolute (positive) value.

In discrete mathematics, and more particularly in graph theory, a graph is a structure consisting of a set of objects, some of which are "related" in some way.

Distances between locations are often measured using the absolute value function. The absolute value function can also be used to address applied issues such as ranges of feasible values.

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Answer:

  C)  25°

Step-by-step explanation:

You want the base angles in an isosceles triangle with vertex angle 130°.

The base angles of an isosceles triangle are congruent. If each is represented by 'b', then the sum of angles in the triangle is ...

  2b +130° = 180°

  2b = 50° . . . . . . . . subtract 130°

  b = 25° . . . . . . . divide by 2

The base angles of the triangle are 25°, choice C.

<95141404393>

[tex]y^3 - 6y^2 = 0\\y^2(y-6)=0\\y^2=0 \vee y-6=0\\y=0 \vee y=6[/tex]

The Probability that exactly three out of the next eight eastbound cars that arrive randomly at the light will be stopped by a red light is approximately 0.268.

The probability that the light is red is given by the ratio of the time the light is red to the total cycle time:

P(red) = 15 / (15 + 5 + 30) = 0.375

Using the binomial distribution, the probability that out of the next eight eastbound cars that arrive randomly at the light, exactly three will be stopped by a red light is:

P(X = 3) = (8 choose 3) * (0.375)^3 * (0.625)^5

where (8 choose 3) is the binomial coefficient, which represents the number of ways to choose 3 cars out of 8. Evaluating this expression gives:

P(X = 3) = (8 choose 3) * (0.375)^3 * (0.625)^5

        = (8! / (3! * 5!)) * (0.375)^3 * (0.625)^5

        = 56 * 0.052734375 * 0.1787109375

        ≈ 0.268

Therefore, the probability that exactly three out of the next eight eastbound cars that arrive randomly at the light will be stopped by a red light is approximately 0.268.

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