Considering only the values of α and β for which cos(α−β)cosαcosβ is defined, which of the following expressions is equivalent to cos(α−β)cosαcosβ?
Select the correct answer below:


tanα−tanβ
1+tanαtanβ
cotαcotβ−1
cotα+cotβ

the radius of the track is approximately 420.38 feet.

Why is it?

The circumference of the circular track is 0.5 miles or 0.5 × 5280 = 2640 feet.

The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius.

Therefore, 2640 = 2 × 3.14 × r

Simplifying the equation: 2640 = 6.28r

Dividing both sides by 6.28: r ≈ 420.38 feet

Therefore, the radius of the track is approximately 420.38 feet.

Circumference is the distance around the edge of a circle or any other curved, circular object. It is also the perimeter of the circle. It is calculated by multiplying the diameter of the circle by pi (π), which is a mathematical constant that is approximately equal to 3.14.

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Answer:

6

Step-by-step explanation:

200.55ft³

12×12= 144 (area of the square)

pi×radius² = area of a circle but since it is only half a circle, divide the answer by two and add the area of the semi circle and square for the total area

Answer: A = 527

Step-by-step explanation:

468+59 = 468+(1+58)=(468+1)+58=527

The given addition and subtraction can be done using compensation as follows.

Compensation is the method of adding or subtracting numbers by making the numbers easier.

(a) 468 + 59

We add 1 to 59 and make it 60, which make it easier to add.

468 + 60 = 528

Subtract the added 1.

528 - 1 = 527

(b) 458 - 49

Subtract 1 and make 49 to 50

458 - 50 = 408

Add 1 and we get, 408 + 1 = 409

(c) 499 + 599 + 699

Add 3 adding one to each, we get,

500 + 600 + 700 = 1800

Subtracting 3, 1800 - 3 = 1797

(d) 10000 - 599

Adding 1, 10000 + 600 = 9400

Subtracting the before added 1, 9400 - 1 = 9399

Hence the operations are done.

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We get x = -3 and y = 2 on solving 2x + 5y = 4; 2x - y = -8

Let's find y from the second equation in terms of x:

2x - y = -8

-y = -2x - 8

y = 2x + 8

Now, we may enter the following expression in place of y in the first equation:

2x + 5y = 4

2x + 5(2x + 8) = 4

Simplifying this equation, we get:

12x + 40 = 4

Subtracting 40 from both sides, we get:

12x = -36

Dividing both sides by 12, we get:

x = -3

Now we can substitute this value of x into our expression for y:

y = 2x + 8 = 2(-3) + 8 = 2

Hence, x= -3 and y= 2 are the answers to the system of equations.

The complete question can be:

2x + 5y = 4

2x - y = -8

solve for x and y

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Using equations, the daily room charge, in dollars per day, is $78 per day.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Let x be the daily room charge, in dollars per day.

Then the total charge for staying for 3 days is 3x dollars.

According to the problem statement, the total charge for staying for 3 days is $234. So we can set up the equation:

3x = 234

To solve for x, we can divide both sides by 3:

[tex]3x/3 = 234/3[/tex]

x = 78

Therefore, the daily room charge, in dollars per day, is $78 per day.

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The period of the sinusoidal function is 4 seconds

The period of a wave is the time it takes for one complete cycle of the wave to occur. In other words, it is the time required for a wave to repeat itself exactly.

The period of a wave is typically denoted by the symbol "T" and is measured in units of time, such as seconds.

In the function plotted the time to complete one oscillation is solved to be 4 seconds

The solution is obtained by taking two successive crests or troughs

using two successive troughs we have

= 5 - 1

= 4

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The end behavior of the function is As x → -∞, f(x)→ -∞ and as x→ ∞, f(x)→ -∞, so correct option is C.

In mathematics, a function is a rule that assigns a unique output or value to each input or element in a given set. It is a mathematical object that describes how one quantity (the output) depends on another quantity (the input).

A function can be represented by a graph, a table, or an algebraic equation. The input values are usually denoted by the variable x, while the output values are denoted by the variable y, f(x), or some other symbol. The notation f(x) is read as "f of x" and is used to represent the output value of the function when the input value is x.

A function can be defined in various ways:

Geometrically, by specifying a curve or surface in the plane or in space.

Algebraically, by specifying a formula or equation that gives the output in terms of the input.

Numerically, by specifying a table of input-output pairs.

Verbally, by giving a description of how the output depends on the input.

The end behavior of the function is As x → -∞, f(x)→ -∞ and as x→ ∞, f(x)→ -∞, so correct option is C.

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Amount Included in Cost of Equipment:

Invoice price of machine = $10,300

Less: Discount received = $103

Net purchase price = $10,300 - $103 = $10,197

Additional costs incurred:

Transportation costs = $233

Mounting and power connections = $712

Assembling cost = $336

Materials cost = $40

Repair cost = $250

Total additional costs = $233 + $712 + $336 + $40 + $250 = $1,571

Cost recorded for this machine:

Net purchase price + Total additional costs = $10,197 + $1,571 = $11,768

Therefore, the cost recorded for this machine is $11,768.

Expectation of the gain for the given outcomes on rolling fair dice is:

E = $0.5

The total number of outcomes for such probability experiment is known as the total number of outcomes in probability.

For rolling sum 2 and 12 - {(1,1), (6,6)}

Total number of possible outcomes = 2 (that is 2 and 12)

As, either 2 or 12 will appear. So, there will be 1 gain and one loss.

Gain for rolling 2 or 12 is $12 and for loss $1

Gain = 12 - 1 = $11

For rolling sum 7  - {(1,6),(6,1),(2,5),(5,2),(4,3),(3,4)}

Gain for rolling 7  - $5 and for loss $1

Total number of possible outcomes = 6

Gain = 5 - 1 = $4

For others:

Total number of possible outcomes = 36 - (2+6) = 28

Loss = -$1

Expectation of total gain;

E = (2×11 + 6×4 - 28×1)/36 = 18/36

E = 1/2

E = $0.5

Thus, Expectation of the gain for the given outcomes on rolling fair dice is: E = $0.5

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Complete question:

At this year's State Falr, there was a dice rolling game. If you rolled two dice and got a sum of 2 or 12, you won $12. If you rolled a 7, you won $5. Any other roll was a loss. It cost $1 to play one game with one roll of the dice. What is the expectation of the game? Round your answer to the nearest cent.

The expectation of this game is approximately dollars.

the y-intercept of the equation h=12−x represents the initial height of the candle when it is first lit, which is 12 inches in this case.

How to solve the question ?

In the given equation, h represents the height of the candle in inches and x represents the number of hours for which the candle has been burning.

The y-intercept of the equation is the point where the graph of the equation intersects the y-axis, which occurs when x is equal to 0. Substituting x=0 in the equation, we get:

h=12-0

h=12

Therefore, the y-intercept of the equation is 12, which means that when the candle is first lit (x=0), its height is 12 inches.

In the context of the burning candle, the y-intercept represents the initial height of the candle before it starts to burn. This is the height of the candle when it is first lit and before any wax has melted. As the candle burns and wax melts, the height of the candle decreases, and this is represented by the negative slope of the equation.

In summary, the y-intercept of the equation h=12−x represents the initial height of the candle when it is first lit, which is 12 inches in this case.

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1.Band A: Cost = $500

Band B: Cost $350 + $1.50x

2. The caterer's fixed cost is $150 and the rate per student served is $6.

3.Cost per ticket $12.50

4.we can buy at most 3 bouquets of roses.

What are linear equations?

The first-degree equations are linear equations. The straight line's equation can be found here. ax+by+c=0 is the most common form of a linear equation, where a and b are zeros.

Part 1:

Let x be the number of students.

Band A: Cost = $500

Band B: Cost $350 +$1.50x

The system of equations representing the cost of the two bands is:

CostA = 500

CostB = 350+ 1.5x

Part 2:

Let F be the fixed cost and R be the rate per student served.

From the given information, we can write two equations:

50R + F = 450

150R + F = 1050

Subtracting the first equation from the second, we

get:

100R = 600

Therefore, R = 6.

Substituting R in the first equation, we get:

50(6)+F450

Therefore, F = 150.

So, the caterer's fixed cost is $150 and the rate per student served is $6.

Part 3:

For 100 students:

CostA 500

CostB = 350+ 1.5(100) 500

Both bands have the same cost, but Band A has a lower variable cost.

So, we should choose Band A.

Total cost for 100 students = 500 + 150+ 6(100) =

$1250

Cost per ticket = Total cost / Number of students = 1250/100 = $12.50

For 200 students:

CostA = 500

CostB = 350+ 1.5(200) = 650

Band A still has a lower cost, so we should choose Band A.

Total cost for 200 students 500+ 150 + 6(200) = $1850

Cost per ticket = Total cost / Number of students =

1850/200 $9.25

Part 4:

Let D be the number of bouquets of daisies and R be the number of bouquets of roses.

The cost of daisies is $25 per bouquet and the cost of roses is $35 per bouquet. We want to spend no more than $500, so we can write:

25D +35R < 500

If we buy 15 bouquets of daisies, then we can spend at most $425 on roses:

25(15) + 35Rs 500

375 +35R ≤ 500

35R ≤ 125

If we buy 15 bouquets of daisies, then we can.

Mathematics College spend at most $425 on roses:

25(15)+35R ≤ 500

375 +35R≤ 500

35R ≤ 125

R≤ 3.57

So, we can buy at most 3 bouquets of roses.

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Hi

Covert is a rectangle. Area if rectangle is side x side

so one side is 6 and the other 9.

I let you conclude.

Answer: The area of the front cover is 54 inches squared

Step-by-step explanation:

To find the area of any rectangle all you have to do is multiply the base by the height. In this case, you would multiply 6 ( The base ) by 9 ( The height ) getting you 54 inches squared.

1. The function has x-intercepts at x = -2 and x = 3, so the answer is

A.(- 2, 0) * and(3, 0).

2. The y-values are increasing on the interval from x = -3 to x = -1, and from x = 1 to x = 3. So the answer is B, -3 < x < -1.

What is x-intercept?

1. To find the x-intercepts of the quadratic function, we need to find the values of x for which y is equal to 0.

The x-intercept of a function is the point at which the graph of the function intersects the x-axis. At the x-intercept, the value of y (the output of the function) is equal to zero, which means that the corresponding input value of x causes the function to have an output of zero.

From the table, we can see that the function has x-intercepts at x = -2 and x = 3, so the answer is A.

What is an interval?

2. To determine where the function is increasing, we need to look for intervals where the y-values are increasing as x increases.

From the table, we can see that the y-values are increasing on the interval from x = -3 to x = -1, and from x = 1 to x = 3. So the answer is B, -3 < x < -1.

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Step-by-step explanation:

Here we know that the formula to find Farhenheit is F= (9/5)×C +32

Then the degree by converting 67 would be 152.6 degree.

The required expanse for each semester is $1000.

The academic year is divided into 15 to 17 week terms by a semester. The academic year typically consists of two semesters: Autumn, which begins in August or September, and Spring, which begins in January.

Toby will need $2,000 to cover the costs of attending college for one year. To find the costs for each semester,

Toby must divide $2,000 by 2 because he intends to enroll for two semesters per year. He can set up the division as $2,000/ 2 or $1000.

Thus, required expanse for each semester is $1000.

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Answer:

To solve for x in the equation x+8|=-2, we first need to isolate the absolute value expression on the left side of the equation. We can start by subtracting 8 from both sides: x + 8 | = -2 x + 8 - 8 | = -2 - 8 x | = -10 Now we can solve for x by considering the two cases for the absolute value: 1. x + 8 = -10 2. -(x + 8) = -10 Solving for x in each case, we get: 1. x = -18 2. x = 2 Therefore, the solutions for x are -18 and 2.

Answer:

9

Step-by-step explanation:

= 6 ÷ 2(1 + 2)

= 6 ÷ 2 x 3

= 9

hope that helps!

The equation of circle with endpoints at  (-3, 0) and (3, 0) is x² + y² = 9

The end points (-3, 0) and (3, 0) represent the endpoints of a diameter of the circle. The center of the circle is the midpoint of this diameter. We can find the midpoint of the diameter by averaging the x-coordinates and the y-coordinates of the endpoints:

Midpoint = ((-3 + 3)/2, (0 + 0)/2) = (0, 0)

So the center of the circle is at the point (0, 0). The radius of the circle is half the length of the diameter, which is:

Radius = 1/2 * distance between (-3, 0) and (3, 0)

= 1/2 * 6

= 3

Therefore, the equation of the circle with endpoints at (-3, 0) and (3, 0) is:

(x - 0)² + (y - 0)² = 3²

Simplifying:

x² + y² = 9

So the equation of the circle is x² + y² = 9.

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Answer:

To determine which investment option would yield the highest return, we can calculate the future value of each investment at a certain age. Let's assume we're looking at the value of each investment at age 65. Option 1: $50 initial investment with an average annual growth rate of 9% starting at age 30 Using a compound interest calculator, we can find that the future value of this investment at age 65 would be approximately $1,338. Option 2: $50 initial investment with an average annual growth rate of 8% starting at age 20 Again, using a compound interest calculator, we can find that the future value of this investment at age 65 would be approximately $1,088. Option 3: $100 initial investment with an average annual growth rate of 7% starting at age 25 Using the same calculator, we can find

0

The solution set of the given inequality is (-4, 4.4)

Here are the steps to follow when solving absolute value inequalities:

Isolate the absolute value expression on the left side of the inequality.

If the number on the other side of the inequality sign is negative, your equation either has no solution or all real numbers as solutions.

Clear the absolute-value bars by splitting the equation into its two cases, one for the Positive case and the other for the Negative case.

|5t-1| > 21

case 1)

for positive

5t-1 > 21

5t > 22

t > 4.4

for negative

-(5t-1) > 21

-5t+1 > 21

-5t > 20

t< -4

hence the solution set of the given inequality is (-4, 4.4)

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Answer:

Step-by-step explanation:

Answer=15/8

Get a common denominator. For this we will use 16 since it is the lcm of the original denominators. We can then rewrite the entire thing as 5/16+12/16+13/16=30/16=15/8

a) Annual interest = 0.18

b) Compoundings = 3  

c) Number of years = 7 years

d) Total Compoundings = 21

Compound interest is the concept of adding interest to the principal amount of a loan or investment and then calculating the interest for the next period based on the new total.

This means that the interest earned or charged on an investment or loan is not only depends on the principal amount and the interest rate but also on the time period and the frequency of compounding.

Here we have

18% compounded every 4 months for 7 years

a) The annual interest rate as decimal = 18% = 18/100 = 0.18

b) Number of compoundings = 12/4  = 3  

[∵  Compounded for every 4 months ]

c) Number of years = 7 years

d) Total number of compoundings is 7 × 3 = 21

Therefore,

a) Annual interest = 0.18

b) Compoundings = 3  

c) Number of years = 7 years

d) Total Compoundings = 21

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The equation of a line perpendicular to y = -6 that contains the point (1, 3) is x = 1 .

We are given a line that runs through the point (1, 3) and is perpendicular to y = -6.

We want to write the equation for this line in slope-intercept form.

                           Slope-intercept form is y=mx+b,

where m is the slope and b is the value of y at the y intercept, hence the name. First, we need to find the slope (m) of the line.

                              Given line = y = -6

                            y = 0x - 6

compare with  y  = mx + C

therefore slope m = 0

the slope of the perpendicular line can be given as

M perpendicular = -1/m

M perpendicular = - 1/0

Keep in mind that we were given the line's perpendic subsequently, to find the slant of this line, we can do the accompanying condition

                                         0m=1

Partition the two sides by 0

                                                m = 1/0

This  is indistinct - subsequently, the line has a vague slant . If so, then, at that point, it implies the line is an upward line

An upward line is composed as

                                               x=k,

where k is the worth of x at the x side . The slope-intercept form cannot be used to write it.

                                   Substituting  1 for k

y- y₁ = m perpendicular - ( x- x₁)

y - 3 = - 1/0( x - x₁ )

0  = - ( x- 1 )

x-1 = 0

x = 1

because this value is the same as the value of x at every point along such a line; in this instance, as indicated by the point (1, 3), this value is 1.

Hence, the equation of a line perpendicular to y = -6 that contains point 1,3 is x = 1 .

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The surface area of the cube from the net has a value of 1176 square centimeters.

The surface area of a cube is given by the formula:

Surface area = 6 × (length of a side)^2

If the length of the side of the cube is 14 centimeters, then the surface area is:

Surface area = 6 × (14 cm)^2

Surface area = 6 × 196 cm^2

Surface area = 1176 cm^2

Therefore, the surface area of the cube is 1176 square centimeters.

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Answer:

4655

Step-by-step explanation:

this is not correct question because I know that is omath question