I really need help doing this. please help me.

The mean, median, mode and range of the data are 68.58, 68, 68 and 17 respectively.

A measure of central tendency is a single value that attempts to describe a set of data by identifying the central position within that set of data.

1. The mean of the data is;

mean = 62 + 63 + 65 + 66 + 68 + 68 + 68 + 70 +  70 + 72 + 72 + 79 / 12

mean = 68.58

2. The median of the data = 68

3. The mode of the data = 68

4. The range of the data = 17

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When A plug is removed from a trough to drain the water, The appropriate form of the expression is 10(x - 1)² - 3. Option D

The appropriate form of the expression that would reveal the time, in minutes, when the trough is empty is: 10(x - 1)² - 3.

This expression represents the volume of the trough after the plug is removed, with x representing the time in minutes. When the volume of the trough is equal to zero, it means the trough is empty.

Therefore, setting the expression equal to zero and solving for x will give us the time when the trough is empty.

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The way to correct the entry on the calculator without deleting what is already there is by multiplying by 2.

Consider the scenario at hand, where an inadvertent error was committed during a calculator operation. The initial intention was to multiply by 100, yet the input mistakenly resulted in a multiplication by 50.

Seeing as this is multiplication, and the number that was to be multiplied is larger than the number given, you can find the quotient of the larger number from the smaller number to be :

= 100 / 50

= 2

Then multiply the entry by 2 as this would then lead to the correct result of 3, 500.

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3/5 and -3/4 are the x and y-intercept of the line respectively

Given the coordinate points (−1, −2) and (3, 3), we need to determine the x and y-intercept

The equation of a line in slope intercept form is y = mx + b where:

m is the slope

b is the intercept

For the slope:

slope = 3-(-2)/3-(-1)
Slope = 5/4

For the y- intercept

3 = 5/4(3) + b

3 = 15/4 + b

b = 3 - 15/4

b = -3/4

Hence the equation of the line is. y = 5/4 x - 3/4

For the x-intercept

The x-intercept is the point where y = 0

0 = 5/4 x - 3/4

5/4 x = 3/4

5x = 3

x = 3/5

Hence the x- and y-intercepts of the line are 3/5 and -3/4 respectively.

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The total mass of the four packages is given as follows:

37.67 kg.

The total mass of the four packages is obtained adding the masses of each package given on the table for this problem.

From the table given in this problem, the mass for each package is given as follows:

Hence, adding these amounts, the total mass of the package is obtained as follows:

3.94 + 14.81 + 11.27 + 7.65 = 37.67 kg.

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Answer: 2(x+3)(x+2)

Step-by-step explanation:

Answer:

d. Certain

Andres will always roll a number greater than or equal to 1 since 1 is the lowest number on the die. Therefore, the probability of rolling a number greater than or equal to 1 is certain.

Answer:

C

Step-by-step explanation:

using the sine ratio in the right triangle

sin P = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{QR}{PQ}[/tex] = [tex]\frac{12}{13}[/tex] , then

∠ P = [tex]sin^{-1}[/tex] ( [tex]\frac{12}{13}[/tex] ) ≈ 67° ( to the nearest degree )

The coordinates of the hole of the rational function are (-3, -3).

Here we have the following rational function:

[tex]f(x) = \frac{x^2 + 3x}{x + 3}[/tex]

The hole is when the denominator becomes zero, that is at x = -3

Now, we can rewrite the numerator as:

x² + 3x = x*(x + 3)

Then we can rewrite the function as:

[tex]f(x) = \frac{x^2 + 3x}{x + 3} = \frac{x*(x + 3)}{x + 3} = x[/tex]

Evaluating that in x = -3 we get f(x) = -3, then the coordinates of the hole aer (-3, -3).

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When creating a rubric or criteria for grading students, it is important to establish clear expectations and criteria that align with the learning objectives of the assignment or task. Here is a suggested rubric format:

1. Content Knowledge: Assess the depth and accuracy of the student's understanding of the subject matter.

2. Organization and Structure: Evaluate the clarity and logical flow of the student's work, including the use of headings, subheadings, and transitions.

3. Research and Evidence: Consider the quality and relevance of sources used, as well as the integration of evidence to support arguments or claims.

4. Critical Thinking: Assess the student's ability to analyze, evaluate, and synthesize information, demonstrating higher-order thinking skills.

5. Writing Mechanics: Evaluate the student's grammar, spelling, punctuation, and overall writing style.

6. Creativity and Originality: Acknowledge unique or innovative ideas, approaches, or perspectives.

7. Presentation (if applicable): Assess the student's ability to effectively present their work, including visual aids, organization, and delivery.

Each criterion should have specific descriptors or levels of achievement (e.g., Excellent, Good, Fair, Poor) that clearly communicate expectations. It is also helpful to assign weights to each criterion to reflect their relative importance.

Providing detailed feedback and examples can further enhance the usefulness of the rubric for students' understanding and improvement.

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Answer:

  1650 calories

Step-by-step explanation:

You want to know how many calories are burned in 3 hours of walking if 550 calories are burned each hour of walking.

The total number of calories burned is the product of the number burned per hour and the number of hours:

  (550 cal/h)·(3 h) = 550·3 cal = 1650 cal

The woman burned 1650 calories after walking 3 hours.

__

Additional comment

As with most rate problems, the quantity is the product of the rate and the time.

<95141404393>

The value of ascending order of numbers are,

⇒ (- 1/2)², 30%, 5/8, 5⁰ , |2|

We have to given that,

All the numbers are,

⇒ 5⁰

⇒ |2|

⇒ (- 1/2)²

⇒ 5/8

⇒ 30%

Now, We can simplify each as,

⇒ 5⁰

⇒ 1

⇒ |2|

⇒ 2

⇒ (- 1/2)²

⇒ 1/4

⇒ 0.25

⇒ 5/8

⇒ 0.625

⇒ 30%

⇒ 30/100

⇒ 0.3

Hence, Ascending order is,

0.25, 0.3, 0.625, 1 , 2

Or,

⇒ (- 1/2)², 30%, 5/8, 5⁰ , |2|

Thus, The value of ascending order of numbers are,

⇒ (- 1/2)², 30%, 5/8, 5⁰ , |2|

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The area of the triangle is 25061.6 cm²

A triangle is a closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices. A triangle is also a polygon.

The area of a triangle is expressed as;

A = 1/2bh where b is the base a d h is the height. This formula only works for right angled triangle.

Another formula for area of triangle is 1/2 absinC

a = 180cm

b = 280cm

C = 84°

A = 1/2 × 180 × 280 × sin84

A = 50123.9/2

A = 25061.6 cm²

Therefore the area of triangle OPQ is 25061.6 cm².

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Answer: 0.16

Step-by-step explanation:

Answer:

The car is moving 15 degrees South of East. This means that it is moving in a direction that is 75 degrees from the positive x-axis.

The velocity vector of the car can be broken down into its components in the x and y directions as follows:

vx = v * cos(theta) = 68 * cos(75) = 17.3 mph

vy = v * sin(theta) = 68 * sin(75) = 66.3 mph

where

v = 68 mph (magnitude of velocity)

theta = 75 degrees (angle of velocity vector with respect to the positive x-axis)

Therefore, the car is moving 17.3 mph in the Eastern direction and 66.3 mph in the Southern direction.

Answer:

123

Step-by-step explanation:

Add 6 to the first number to get the second number.

Add 3 to the second number to get the third number.

Multiply the third number by 4 to get the fourth number.

Add 5 to the fourth number to get the fifth number.

Using this pattern, we can find the next number in the sequence by following the same rule:

Multiply the fifth number by 2 and then subtract 7 to get the next number.

So, the next number in the sequence is:

65 x 2 - 7 = 123

Step-by-step explanation:

Let's denote the number of hours Nathan works delivering pizzas as "x" and the number of hours he works babysitting as "y." We can set up the following system of inequalities:

Nathan's total earnings should be at least $40:

10x + 5y ≥ 40

Nathan's total working hours should be less than six hours a week:

x + y < 6

These two inequalities represent the given conditions that Nathan wants to make at least $40 and work for less than six hours a week.

To answer the given questions, let's use conditional probability based on the information provided:

a. To find the probability that the selected student does not get a scholarship, given that they cannot get a job within 2 months after graduation, we can use Bayes' theorem. Let's denote the events as follows:

A: Not getting a scholarship

B: Not getting a job within 2 months after graduation

We want to find P(A|B), which is the probability of not getting a scholarship given that the student cannot get a job within 2 months. According to the given information, 25% of students who cannot get a job within 2 months get at least one university scholarship.

Using Bayes' theorem:

P(A|B) = (P(B|A) * P(A)) / P(B)

P(B|A) is the probability of not getting a job within 2 months given that the student does not get a scholarship. Since this information is not provided, we cannot determine this probability.

b. To find the probability that the selected student gets no university scholarship, we can use the law of total probability. Let's denote the events as follows:

A: Not getting a scholarship

B: Getting a job within 2 months after graduation

C: Not getting a job within 2 months after graduation

We want to find P(A), the probability of not getting a university scholarship. According to the given information, 60% of students get a job within 2 months after graduation, and among those students, 70% get at least one university scholarship. For students who cannot get a job within 2 months, 25% get at least one university scholarship.

Using the law of total probability:

P(A) = P(A|B) * P(B) + P(A|C) * P(C)

We don't have the values for P(A|B) or P(B) and P(A|C) or P(C), so we cannot calculate the exact probability of not getting a university scholarship.

Therefore, without additional information or values for conditional probabilities, we cannot provide specific numerical answers to these questions.

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The caluclated values are:

N = 500:

SEM = 9 * √[(500 - 48) / (500 - 1)] / √(48)

= 1.24 (rounded to 2 decimals)

N = 5000:

SEM = 9 * √t[(5000 - 48) / (5000 - 1)] / √(48)

= 1.30 (rounded to 2 decimals)

N = 50000:

SEM = 9 * √[(50000 - 48) / (50000 - 1)] / √(48)

= 1.30 (rounded to 2 decimals)

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The median and the range for the data-set are given as follows:

The median of a data-set is the middle value of a data-set, the value of which 50% of the measures are less than and 50% of the measures are greater than. Hence, the median also represents the 50th percentile of a data-set.

The ordered data-set is given as follows:

3, 6, 12, 15, 17, 19, 21.

The middle value is of 15, hence it represents the median of the data-set.

The range of a data-set is defined as the difference between the largest and the smallest value in the data-set, hence:

21 - 3 = 18.

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The chord in this circle is RS while the radius of the circle is QT. If the diameter of the circle is 28 cm, then the radius will be 14 cm.

The chord of a circle refers to the line that connects two parts of the circle. In the diagram provided, points RS represent the chord of the circle. Also, the diameter of a circle are the points that run between two segemnts of the circle's center.

In this circle these are points GP. The radius is gotten by dividing the diameter by 2, so the radius of the given diameter is 28/2 = 14.

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The value of x in the circle is 180° - 85° = 95°. The Cyclic Quadrilateral Theorem states that the sum of any opposite angle pair within a cyclic quadrilateral is additional,

Given

Angle = 85°

Required to find the opposite angle to 85° which is x

x = 180° - 85°

x= 95°

Thus, the quadrilateral is inscribed in a circle. Due to the shape being a quadrilateral, it is presumed that the angle in the middle is supplementary and adds up to 180° 180° 180°. The opposing angles in a quadrilateral are presumed to be equal since angles in the same segment are equal.

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The value of x is 40 degree.

We have,

Far Arc = 130 degree

Near Arc = 50 degree

According to "Angle-Arc Theorem." It states that the angle formed by the intersection of two tangents, two secants, or one tangent and one secant outside a circle is equal to half the difference of the intercepted arcs.

In other words, The angle formed outside of the circle is always equal to the the far arc minus the near arc divided by 2.

Using Angle = (Far Arc - Near Arc) /2

So, x= (130- 50)/2

x = 80/2

x= 40

Thus, the value of x is 40 degree.

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Answer:

$40.00 is the answer

Step-by-step explanation:

also can you mark me as a brainlist if you get a chance

Answer: $40.00

Step-by-step explanation:

12 is 30% of 40

The correct statement would be: An ice cream would need more than 9 votes from the first-place line in the preference schedule.

To determine the number of votes an ice cream would need to accumulate in order to be the majority winner, we should analyze the preference schedule provided.

Looking at the preference schedule, we can see that there are four ice cream flavors:

Chocolate (C), vanilla (V), strawberry (S), and pistachio (P).

Each row represents the rankings given by Janice's friends.

To be the majority winner, an ice cream flavor would need to accumulate more votes than any other flavor.

In this case, we can determine the highest number of votes an ice cream flavor can receive by considering the first-place line in the preference schedule.

From the first-place line, we can see that the maximum number of votes any flavor has received is 9.

Therefore, an ice cream flavor would need more than 9 votes from the first-place line to be the majority winner.

Based on the given options, the correct statement would be: An ice cream would need more than 9 votes from the first-place line in the preference schedule.

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Answer:

2715

Step-by-step explanation:

10860/4 = 2715

if im wrong smite me