Given triangle XYZ with ZX = 30°, ZY= 20° and ZZ = 2aº, what is the value of a?
A. 130
B. 65
C. 40
D. 20

Answer:5

Step-by-step explanation:

angle h and k are equal (because alternate exterior angles are equal)

2x+7=5x-8

8+7=5x-2x

15=3x

15/3=x

5=x

h=2x+7=2*5+7=17degrees

It is important to plan for data analysis during the research design process, so that the appropriate methods for data analysis can be chosen and the necessary resources can be allocated.

In most situations, data collection should only begin after the research design process is finished. This is because the research design process involves deciding on the research questions, hypotheses, variables, and methods of data collection and analysis. Once these decisions are made, it is important to finalize the research design before beginning data collection.

Starting data collection before the research design is finished can lead to problems such as collecting irrelevant data, collecting data that does not answer the research questions, or collecting data in a way that is not appropriate for the research design. Therefore, it is important to complete the research design process before beginning data collection.

While it is important to have funding for the research, it is not necessary to have certainty for funding before beginning data collection. In many cases, researchers may start data collection with partial funding, and then apply for additional funding once the initial data has been collected.

Similarly, data analysis should not be complete before data collection, as data collection is a necessary first step in the research process. However, it is important to plan for data analysis during the research design process, so that the appropriate methods for data analysis can be chosen and the necessary resources can be allocated.

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The longest piece of wood we need is the bottom left piece, which requires a board of at least 15 inches in length

Based on the dimensions provided in the image, we can see that Yeidalis needs a board that is at least as long as the longest piece of wood required.

The longest piece of wood required is the diagonal of the rectangle with dimensions 12 inches and 9 inches.

Using the Pythagorean theorem, we can calculate the length of this diagonal as:

sqrt(12^2 + 9^2) = sqrt(144 + 81) = sqrt(225) = 15 inches

So Yeidalis needs a board that is at least 15 inches long to create her artwork.

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The distance d between the train and the railroad marker can be expressed as:

d = 200 - 65h

where 200 represents the initial distance between the train and the marker, and 65h represents the distance the train has covered after h hours, assuming a constant speed of 65 miles per hour.

To find the time it will take for the distance between the train and the marker to be 4 miles apart, we can set d to 4 and solve for h:

4 = 200 - 65h

65h = 196

h = 196/65

So the equation to find the time it will take for the distance between the train and the railroad marker to be 4 miles apart is:

200 - 65h = 4

or

65h = 196

or

h = 196/65

The probability of either die rolling the value 3 or both dice rolling even values is 5/9.

The probability of rolling a 3 on a single die is 1/6, so the probability of either die rolling a 3 is 2/6 or 1/3 (since there are two dice).

The probability of rolling an even number on a single die is 1/2 (since there are three even numbers and three odd numbers on a 6-sided die). The probability of rolling even values on both dice is the product of the probability of each die rolling an even value, which is (1/2) x (1/2) = 1/4.

To find the probability of either die rolling a 3 or both dice rolling even values, we need to subtract the probability of rolling both a 3 and an even value (since we would be double-counting this case). The only way to roll both a 3 and an even value is to roll two 6's, so the probability of this happening is 1/36.

Therefore, the probability of either die rolling 3 or both dice rolling even values is:

P(either die rolling 3 or both dice rolling even) = P(die 1 = 3 or die 2 = 3 or both dice even) - P(both dice = 6)

= (1/3 + 1/3) + (1/4 - 1/36)

= 5/9

Hence, the probability is 5/9.

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Answer:

[tex]\boxed{\mathtt{10x^{2}-x-16}}[/tex]

Step-by-step explanation:

[tex]\textsf{For this problem, we are asked to simplify the given expression.}[/tex]

[tex]\textsf{Consider noting that this expression has like terms, meaning we can combine them.}[/tex]

[tex]\large\underline{\textsf{What are Like Terms?}}[/tex]

[tex]\textsf{Like terms are 2 or more terms that share similarity. They aren't different in a major way.}[/tex]

[tex]\textsf{Like terms are terms with the same type of number, variable, and or exponent.}[/tex]

[tex]\large\underline{\textsf{Combine Like Terms:}}[/tex]

[tex]\mathtt{2x+6x^{2}-10+4x^{2}-3x-6}[/tex]

[tex]\boxed{\mathtt{10x^{2}-x-16}}[/tex]

Answer:

d=-3

Step-by-step explanation:

d^3=-27

d=[tex]\sqrt[3]{-27} \\[/tex]

d=-3

Answer:

d=-3

Step-by-step explanation:

You must that 3rd root of -27, which is -3

The * must be replaced by a digit of 1, hence the solution to the equation is given as follows:

x = 143.

A number is divisible by 10 if and only if its last digit is 0. This is because 10 is a multiple of 5 and 2, which are the prime factors of 10. Therefore, a number is divisible by 10 if it can be divided evenly by both 5 and 2.

For this problem, the equation is given as follows:

10x + 11 = 144*

Hence, when * = 1, we have that:

10x + 11 = 1441

10x = 1430.

Then the solution for the equation is obtained as follows:

x = 1430/10

x = 143.

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Larger sample sizes typically result in more precise population mean estimates with lower sampling variability. Thus, when calculating population metrics like the mean, it is frequently preferable to utilize larger sample numbers.

The variability of the sampling distribution of the mean reduces with an increase in the number of observation units. The central limit theorem refers to this.

According to the central limit theorem, the sampling distribution of the mean gets more normal as the sample size grows, and its standard deviation (i.e., the standard error of the mean) drops. Particularly, the square root of the sample size has an inverse relationship with the standard error of the mean.

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The truck must make 2 trips tο deIiver 7 m³ οf sand.

VοIume is the amοunt οf space οccupied by an οbject οr substance. It is typicaIIy measured in cubic units such as cubic meters, cubic centimetres, οr cubic feet.

Tο caIcuIate the number οf trips the truck must make tο deIiver 7 m³ οf sand, we need tο determine hοw much sand the truck can carry per trip.

The vοIume οf the truck bed can be caIcuIated as fοIIοws:

VοIume οf the truck bed = Iength x width x height

= 2.5 m x 1.5 m x 1 m

= 3.75 m3

Therefοre, the truck can carry 3.75 m³ οf sand per trip.

Tο deIiver 7 m³ οf sand, we divide the tοtaI amοunt οf sand by the amοunt οf sand the truck can carry per trip:

Number οf trips = tοtaI amοunt οf sand / amοunt οf sand per trip

= 7 m³ / 3.75 m³ per trip

= 1.87

Since we cannοt make a partiaI trip, we must rοund up tο the nearest whοIe number.

Therefοre, the truck must make 2 trips tο deIiver 7 m³ οf sand.

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The function for the total cost of renting a car for a weekend with a base cost of $45 and a mileage charge of $0.15 per mile can be written as:

Total Cost = 45 + 0.15 * miles driven

where "miles driven" is the number of miles the car is driven over the rental period.

To find out how much it would cost Tara to rent the car if she travels 500 miles, we can substitute "500" for "miles driven" in the function:

Total Cost = 45 + 0.15 * 500

Total Cost = 45 + 75

Total Cost = $120

Therefore, if Tara drives 500 miles over the rental period, the total cost of renting the car for the weekend would be $120.

Hence, the total cost of renting a car for a weekend with a base cost of $45 and a mileage charge of $0.15 per mile can be calculated using the function Total Cost = 45 + 0.15 * miles driven. To find the total cost for a specific number of miles driven, we can substitute that number for "miles driven" in the function.

In this case, if Tara drives 500 miles, the total cost of renting the car would be $120.

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Answer: s = ∛125 in^3

Step-by-step explanation:

To find the edge length "s" of a cube with volume "V", we use the formula:

s = ∛V

For a cube with a volume of 125 cubic inches, we can find the edge length as:

s = ∛125

s = 5

So the edge length of a cube with a volume of 125 cubic inches is 5 inches.

Answer:

True

Step-by-step explanation:

I did it

The width of the rectangular prism box is 1.5 inches if the length of the box is 5 inches and the height of the box is 8 inches.

The volume of a rectangular prism = 60 cubic inches.

The length of the box = 5 inches

The height of the box = 8 inches

To calculate the width of the rectangular prism, we can use the formula for volume:

Volume = length * width * height

Mathematically,

V = l*w*h

60 = 5w * 8

w = 60 / (5 * 8)

w = 1.5 inches

Therefore we can conclude that the width of the rectangular prism box is 1.5 inches.

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The probability that there is at least one diameter of the circle with two girls sitting on opposite ends of the diameter is [tex]\frac{7}{12}[/tex] , where 7 and 12 are relatively prime positive integers. The answer is 7+12=19.

The probability that there is at least one diameter of the circle with two girls sitting on opposite ends of the diameter is 1 minus the probability that no diameter of the circle has two girls sitting on opposite ends of the diameter.

There are

[tex]{10\choose5}[/tex] =252

ways to seat the five girls and five boys.

There are 5 ways to choose a diameter of the circle.

Once this diameter is fixed, there are [tex]{5\choose2}[/tex] = 10 ways to choose a pair of seats on the diameter to place two girls (in the order in which they appear counterclockwise).

There are 5!=120 ways to seat the remaining 3 girls and 5 boys such that no two girls sit on the same diameter.

Hence, there are [tex]5\cdot10\cdot120[/tex] =6000 valid seatings that satisfy the condition in the question.

Thus, the desired probability is 1 - [tex]\frac{6000}{252}[/tex] = [tex]\frac{7}{12}[/tex], as stated above.

Thus, the answer is 7+12 = [tex]\boxed{19}[/tex]

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The equation of the circle with center at (8, 2) that passes through (17, 14) in standard form is (x - 8)² + (y - 2)² = 225

In your problem, we are given that the center of the circle is located at (8, 2) and that the circle passes through the point (17, 14). To find the equation of this circle, we need to use the standard form of the equation of a circle, which is:

(x - h)² + (y - k)² = r²

where (h, k) is the center of the circle and r is the radius of the circle.

To find the radius of the circle, we can use the distance formula between the center of the circle and the point on the circle that is given to us. The distance formula is:

d = √((x₂ - x₁)² + (y₂ - y₁)²)

where (x₁, y₁) is the center of the circle and (x₂, y₂) is the point on the circle that is given to us.

Plugging in the values we have, we get:

d = √((17 - 8)² + (14 - 2)²) = √(81 + 144) = √(225) = 15

So the radius of the circle is 15.

Now we can plug in the values we have into the standard form of the equation of a circle:

(x - 8)² + (y - 2)² = 15²

which simplifies to:

(x - 8)² + (y - 2)² = 225

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Answer:

56

Step-by-step explanation:

Answer:

56

Step-by-step explanation:

the answer is 56

The bottom of the ladder is moving at a rate of 1.333 ft/sec when the top is 8 ft from the ground

The bottom of the ladder is moving at a rate of 6 ft/sec when the top is 8 ft from the ground. This can be found by using the equation v = d/t, where v is the velocity, d is the distance, and t is the time. The distance is 8 feet (from the top of the ladder to the ground) and the time is 1/6 seconds (since the ladder is sliding down at a rate of 6 ft/sec). Therefore, the velocity of the bottom of the ladder when the top is 8 ft from the ground is 8/1/6 = 8/6 = 4/3 = 1.333 ft/sec.

To understand this concept more clearly, imagine a ball rolling along the ground. Its velocity is constant until it hits a slope and begins to move down the slope. At this point, its velocity increases as it moves further down the slope, and its velocity is higher when it is further down the slope.

This is the same concept as the ladder sliding down the wall; the bottom of the ladder is moving faster than the top, so the velocity of the bottom of the ladder increases as the top of the ladder gets closer to the ground.

In conclusion, the bottom of the ladder is moving at a rate of 1.333 ft/sec when the top is 8 ft from the ground. This can be found using the equation v = d/t, where v is the velocity, d is the distance, and t is the time. The distance is 8 feet and the time is 1/6 seconds since the ladder is sliding down at a rate of 6 ft/sec.

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The two composite figures cover the same area, A = 4+2+2+1= 9 units²

What is the area of the rectangle?

To find the area of a rectangle, we multiply the length of the rectangle by the width of the rectangle.

we know that

The area for both composite figures is equal to the area of a square plus the area of two isosceles right triangles plus the area of a smaller isosceles triangle

So

Area of the square

A = 2² = 4 units²

Area of the isosceles right triangle

A = (1/2) (2) (2) = 2 units²

Area of the smaller isosceles triangle

A = (1/2)(2)(1) = 1 units²

The area of the composite figure is

A =  4+2+2+1= 9 units²

Hence, the two composite figures cover the same area, A = 4+2+2+1= 9 units²

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Sarah was charged $54 for parts after the store's technician worked on the computer for 4.25 hours. The cost came to $585.25. The value of x is $125.

Let's use the variable x to represent the cost of the labor per hour.

The technician worked on the computer for 4.25 hours, so the cost of the labor would be:

4.25x

The technician also charged Sarah $54 for parts. So the total cost of the repair is:

4.25x + 54

We know that the total cost of the repair was $585.25. Therefore, we can write the following equation:

4.25x + 54 = 585.25

To solve for x, we need to isolate the variable on one side of the equation. First, we can subtract 54 from both sides:

4.25x = 531.25

Next, we can divide both sides by 4.25:

x = 125

Therefore, the cost of the labor per hour is $125.

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Answer:

cylinder

Step-by-step explanation:

A cylinder has 2 circular faces and no vertices.

[tex]=\frac{1}{15} +2\\[/tex]

⇒We can only add the numbers if they have the same denominator, to do so we can first convert 2 into a fraction

[tex]=\frac{1}{15} +\frac{2(15)}{1(15)} \\=\frac{1}{15} +\frac{30}{15} \\=\frac{31}{15} \\[/tex]

The probability (in percent form) of randomly selecting someone who does not believe that statistics teachers know the true meaning of life is 55%.

If 45% of Americans say they believe that statistics teachers know the true meaning of life, then 55% of Americans do not believe this. Therefore, the probability of randomly selecting someone who does not believe that statistics teachers know the true meaning of life is 55%.

Percentage is referred to as the expression in which the number is written as multiple of 100 and the symbol to show percentage of a number is %. Now we need to express the value in percentage.

Expressing this as a percentage, we have:

55% = 55/100 * 100% = 0.55 * 100% = 55%

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 π(64a2 - 192a + 144) is the polynomial expression to find the area of 4 circles where circle has a radius of (4a-6) .

When variables and coefficients are combined using arithmetic procedures like addition, subtraction, multiplication, and non-negative integer exponents, the result is a mathematical expression known as a polynomial. Any numerical value may be represented by the variables, and the expression's coefficients are constants that combine the variables.

given

A =  πr², where r is the circle's radius, is the method for calculating a circle's surface area. The area of one circle can be expressed as follows if the radius of each circle is (4a–6):

A₁ = π(4a-6)²

If we condense this phrase, we get:

A₁ = π(16a² - 48a + 36)

A₂ = π(4a-6)²

A₂ = π(16a² - 48a + 36)

A₃ = π(4a-6)²

A₃ = π(16a² - 48a + 36)

A₄ = π(4a-6)²

A₄ = π(16a² - 48a + 36)

We can add up the areas of each of the four circles to determine their combined area:

A1 + A2 + A3 + A4 Equals A total

A total is equal to π (16a2 - 48a + 36) +  π(16a2 - 48a + 36) +  π(16a2 - 48a + 36).

 π(64a2 - 192a + 144) = A total

 π(64a2 - 192a + 144) is the polynomial expression to find the area of 4 circles where circle has a radius of (4a-6) .

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As a result, it will cost around $0.84 more to fully fill the cylindrical cup with tea than the conical one.

A cone has a circular base and a pointed apex, or vertex. It is a three-dimensional geometric object. It is created by intersecting a plane with a right circular cone at a perpendicular angle to the base. A mathematical formula can be used to determine a cone's volume and surface area. A cone has a curved surface that gently taper from the base to the vertex. Cones are frequently found in commonplace items like ice cream cones, party hats, and traffic cones. They are also widely used in physics, engineering, and mathematics.

given

The milliliter quantities of both cups must be determined, and the difference between them must be multiplied by the price of tea per milliliter.

Conical cup volume is equal to (1/3) r2 h = (1/3) (5/2) 8 = 209.44 cubic centimeters or 209.44 milliliters.

The volume of a cylindrical cup is equal to r2 + h + (3 + 2) + 8 = 226.19 cubic centimeters or 226.19 milliliters.

Volume difference is equal to 226.19 - 209.44 milliliters.

Filling the cylindrical cup cost 16.75 times $0.05, or $0.84.

As a result, it will cost around $0.84 more to fully fill the cylindrical cup with tea than the conical one.

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Answer:

In summary, the correct statements are:

The domain is the set of all integers from 0 to 43.

The range is the set of all multiples of 3 from 0 to 129.

this is the best i could do, make what you want of it, good luck

Step-by-step explanation:

he domain of this function is the set of all possible inputs, which in this case is the number of watermelons the farmer can sell. Since the farmer has 43 watermelons and cannot sell a fraction of a watermelon, the domain is the set of all integers from 0 to 43. So, the first statement is correct.

The second statement is incorrect because the farmer cannot sell a fraction of a watermelon, so the domain cannot include all real numbers from 0 to 43.

The range of this function is the set of all possible outputs, which in this case is the total sales in dollars. Since the farmer sells each watermelon for $3, her total sales will be a multiple of 3. The minimum sales value is $0 (if she sells no watermelons) and the maximum sales value is $129 (if she sells all 43 watermelons). So, the range is the set of all multiples of 3 from 0 to 129. Therefore, the fourth statement is correct.

The third statement is incorrect because not all integers between 0 and 129 are possible values for the farmer’s total sales. For example, she cannot make $2 in sales because her sales will always be a multiple of 3.

The fifth statement is incorrect because it implies that the farmer can only make sales in multiples of 43, which is not true since she sells each watermelon for $3.

In summary, the correct statements are:

The domain is the set of all integers from 0 to 43.

The range is the set of all multiples of 3 from 0 to 129.

Answer: 2+2

Step-by-step explanation: easy thanks :)

The distance from the wall to the bottom of the ladder is approximately 5.97 feet.

Let's denote the distance from the wall to the bottom of the ladder as x, and the length of the ladder as y. We know that the top of the ladder touches the wall at a height of 15 feet, which means that the vertical distance from the ground to the top of the ladder is also 15 feet.

By using the Pythagorean theorem, we can write:

y² = x² + 15²

We also know that the length of the ladder is one foot more than twice its distance from the wall, which can be written as:

y = 2x + 1

We can substitute this expression for y into the previous equation and get:

(2x + 1)² = x² + 225

Expanding the left side and simplifying, we get:

3x² + 4x - 224 = 0

This is a quadratic equation, which we can solve using the quadratic formula:

x = (-4 ± √(4² - 43(-224))) / (2×3)

x = (-4 ± √(4 + 2688)) / 6

x ≈ -13.31 or x ≈ 5.97

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The capacity of Supercut in customers per hour is 18.

The capacity of Supercut is the total number of customers served by three stylists in an hour, considering the average time it takes each stylist to serve one customer. This capacity calculation helps Supercut in keeping up with demand and avoiding long waiting periods, which could discourage clients.

The given data: Supercut salon has three stylists. The average time each stylist takes to serve one customer is 10 minutes. According to the data provided, it takes 10 minutes for each stylist to serve one customer, and there are three stylists. So, in 1 hour (60 minutes), each stylist will have the capacity to serve six clients.

Supercut's total capacity in an hour is calculated by adding up the capacity of each stylist. Therefore, the capacity of Supercut is: Capacity of Supercut = Capacity of each stylist * Number of Stylists= 6 customers * 3 stylists= 18 customers. Therefore, the capacity of the Supercut salon in customers per hour is 18.

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The main difference between linear and cross-hatched grid patterns lies in the orientation of the lead strips. In a linear grid pattern, the lead strips run in one direction, typically from the top of the panel to the bottom. In a cross-hatched grid pattern, the lead strips run in two perpendicular directions, both up and down, and from left to right. This allows for increased flexibility, since it allows the current to be routed in different directions and through different components.

Linear grid patterns are most often used when high current is required in a single direction, since the lead strips are all oriented in the same direction. This allows for more efficient current flow, since all the lead strips are running in the same direction. Cross-hatched grid patterns, on the other hand, are typically used when multiple components need to be connected in different directions, since they are capable of routing current in multiple directions.

Overall, the main difference between linear and cross-hatched grid patterns is the orientation of the lead strips. Linear grid patterns have lead strips that all run in the same direction, while cross-hatched grid patterns have lead strips that run in two perpendicular directions. This allows for increased flexibility in routing current through multiple components, but also reduces efficiency due to the extra lead strips being used.

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