PLEASE HELP, anything is very appreciated

The unit rate at which Darrell walks is 1.5 meters per second.

What is the unit rate?

A ratio that compares two amounts of DIFFERENT types of UNITS is called a rate. When a rate is expressed as a fraction, the denominator is 1 unit. Divide the numerator and denominator of the rate by the denominator to represent a rate as a unit rate.

Here, we have

Given

Darrell is walking for a distance of 90 meters in time 60 seconds.

We have to find the unit rate at which he walks.

To find out the unit rate we must divide the distance traveled by Darrell by the time taken to travel that distance.

The unit rate is given by :

Unit rate = Distance traveled in meters / Time taken in seconds

Unit rate = 90 meters / 60 seconds

Unit rate = 1.5 meters per second.

Hence, the unit rate at which Darrell walks is 1.5 meters per second.

In 60 seconds, Darrell walks 90 meters. Select the two answers that describe the unit rate at which he walks.

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Answer:

Yes, they are equivalent.

Step-by-step explanation:

18 + 3.1m + 4.21m - 2

Combine like terms.

7.31m + 18 - 2

7.31m + 16 = 16 + 7.31m

Answer:

Option A is the correct answer

Step-by-step explanation:

(3 × 8) + (6 × 8)

24 + 48 = 72

Thus, 9 x 8 = 72

Answer:

56 points

Step-by-step explanation:

Let's say that for the next 5 days, you earn x points each day. This means that you will earn 5x more points before the month ends.

Since you already earned 1300 points, you will have earned 1300 + 5x points, which through the question we know is equal to 1580 points. Using this knowledge, we can set up the equation below:

1300 + 5x = 1580

5x = 280

x = 56

Therefore, you will need 56 points each day to reach your goal.

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The least total amount Lewis spends to buy 34 cartons of juice is £12.84 for Alternative B instead of £15.30 for Alternative A.

We can determine the total amount for each alternative and compare the two using two mathematical operations of multiplication and division.

We can also compare the alternatives by determining their unit cost per carton using division.

The number of cartons of juice required = 34

The unit cost of a carton = £0.45 or 45p

The total cost of 4 cartons = £1.80 (£0.45 x 4)

The total amount Lewis would spend for Alternative A = £15.30 (£0.45 x 34)

Cost of a pack of 4 cartons = £1.51

Unit cost per carton of the 4-carton pack = £0.3775 (£1.51/4)

The total amount Lewis spends for Alternative B = £12.835 (34/4 x £1.51)

Thus, mathematically Alternative B presents a lower cost than Alternative A, Lewis would choose to spend £12.84.

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The rule of dilation is (4x, 4y)

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

Scale factor = 4

This means that

Image = point * scale factor

So, we have

Image = (x, y) * 4

Evaluate

Image = (4x, 4y)

Here, we have

Point = (-2, 8)

Scale factor = 1/2

So, we have

Image = (-2, 8) * 1/2

Image = (-1, 4)

Here, we have

Point = (2, 3)

Transformation = reflected across the y-axis.

So, we have

Image = (-x, y)

Image = (-2, 3)

Here, we have

A (4, 3) to point A' (12, 9)

The scale factor is

Scale factor = A'/A

So, we have

Scale factor = (12, 9)/(4, 3)

Evaluate

Scale factor = 3

Hence, the scale factor is 3

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The smallest leg of the triangular garden is 5 feet while the biggest leg is 12 feet.

The three-sided shape known as a triangle is sometimes used to allude to it.

The area of a triangle is defined as (1/2) base height, and the sum of all three angles within a triangle will be 180°.

As the given triangular garden has been drawn below,

By Pythagoras' theorem,

x² + (x + 7)² = (x + 8)²

x² + x² + 49 + 14x = x² + 64 + 16x

x² - 2x - 15 = 0

x² - 5x + 3x - 15 = 0

x(x - 5) + 3(x - 5) = 0

(x + 3)(x - 5) = 0

x = -3,5

Since length can never be negative thus x = 5.

The smallest leg = 5 feet

Biggest leg = 5 + 7 = 12 feet

Hence "The triangular garden's smallest leg is 5 feet long, while its longest leg is 12 feet".

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Based on the two (2) parallel lines m||n, the value of x is equal to 4.

The vertical angles theorem is also referred to as vertically opposite angles theorem and it states that two (2) opposite vertical angles that are formed whenever two (2) lines intersect each other are always congruent, which simply means being equal to each other.

In Geometry, when two (2) parallel lines are cut by a transversal, the pair of vertically opposite angles that are formed would always be equal to each other. In this context, we have the following;

m∠2 = m∠3

7x - 3 = x + 21

7x - x = 21 + 3

6x = 24

x = 24/6

x = 4.

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The amount Damian earns on Friday if he works for 2.75 hours is $43

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

f(x) = 12x + 10

For working for 2.75 hours, the value of x is

x = 2.75

Substitute x = 2.75 in the equation f(x) = 12x + 10

So, we have the following representation

f(2.75) = 12 x (2.75) + 10

Evaluate the sum of products

f(2.75) = 43

hence, the earnings is $43

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Answer:

Step-by-step explanation: There are three possible solutions for a linear equation: no solution, one unique solution, and infinitely many solutions.

A linear equation is an algebraic equation in which the highest exponent of the variables is 1. For example, 2x + 3 = 5 is a linear equation because the highest exponent of the variable x is 1.

If a linear equation has no solutions, this means that the equation is contradictory and there is no possible value of the variable that can make the equation true. For example, the equation 2x + 3 = 5 has no solutions because it is already true for all possible values of x.

If a linear equation has a unique solution, this means that there is only one possible value of the variable that can make the equation true. For example, the equation 2x + 3 = 5 has a unique solution because there is only one value of x that can make the equation true (in this case, x = 1).

If a linear equation has infinitely many solutions, this means that there are an infinite number of possible values of the variable that can make the equation true. This typically happens when the equation has the form of 0 = 0, which is always true for any value of the variable. For example, the equation 0 = 0 has infinitely many solutions because it is true for all possible values of x.

In general, you can tell whether a linear equation has no solutions, a unique solution, or infinitely many solutions by solving the equation. Solving a linear equation involves isolating the variable on one side of the equation and then using algebraic techniques to find its value. If you are able to find a unique value for the variable, then the equation has a unique solution. If you are unable to find a unique value for the variable, then the equation either has no solutions or infinitely many solutions.

To calculate the expected value of playing this game, we need to multiply the value of each possible outcome by its probability of occurring and then add these values together. In this case, there is 1 gold marble, 6 silver marbles, and 28 black marbles in the bag, for a total of 35 marbles. So, the probability of selecting a gold marble is 1/35, the probability of selecting a silver marble is 6/35, and the probability of selecting a black marble is 28/35. The value of winning $3 if a gold marble is selected is $3 * (1/35) = $0.09. The value of winning $2 if a silver marble is selected is $2 * (6/35) = $0.34. And the value of losing $1 if a black marble is selected is -$1 * (28/35) = -$0.80. Adding these values together, we get $0.09 + $0.34 - $0.80 = -$0.37. Therefore, the expected value of playing this game is approximately -$0.37.

Answer:

A.) Yes, because 0.064 is less than 0.4

Step-by-step explanation:

The equation [tex]0.4^3 = 0.064[/tex] is a counterexample to the given conjecture because 0.064 is less than 0.4. This shows that the cube of a number is not always greater than the number.

In general, the cube of a number is the result of multiplying the number by itself three times. For example, the cube of 2 is [tex]2 * 2 * 2 = 8[/tex], and the cube of 5 is [tex]5 * 5 * 5 = 125[/tex]. The cube of a number is always greater than the number when the number is positive, because a positive number multiplied by itself three times is always a larger number. However, when the number is negative or a decimal, this is not always the case.

In the given equation, 0.4 is a decimal number, and [tex]0.4^3[/tex] is the cube of 0.4. The result of this calculation is 0.064, which is less than 0.4. This means that the cube of 0.4 is not greater than 0.4, and therefore the given conjecture is false.

The length (in inches) of the second tablecloth is 43.75 inches

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

Width = 48 inches. and Length = 72 inches ⇒ Small tablecloth

Width = 30 inches. and Length = ?? inches ⇒ Large tablecloth

Represent the unknown length with x

So, we have

Width = 48 inches. and Length = 72 inches ⇒ Small tablecloth

Width = 30 inches. and Length = x inches ⇒ Large tablecloth

This shows a direct variation

So, we cross multiply the equation

x * 48 = 70 * 30

So, we have

x = 70 * 30/48

Evaluate

x = 43.75

Hence, the length is 43.75 inches

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The equivalent fraction for the given fraction is 1/5.

Equivalent fractions are two or more fractions that are all equal even though they different numerators and denominators.

The given fraction is 3/15.

The equivalent fraction is 3/15 =1/5

Therefore, the equivalent fraction for the given fraction is 1/5.

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There is insufficient evidence to conclude that there is a significant linear relationship between

x and y because the correlation coefficient is not significantly different from zero.

The correlation coefficient, r, tells us about the strength and direction of the linear relationship between x and y.

However, the reliability of the linear model also depends on how many observed data points are in the sample.

We need to look at both the value of the correlation coefficient r and the sample size n, together.

We perform a hypothesis test of the “significance of the correlation coefficient” to decide whether the linear relationship in the sample data is strong enough to use to model the relationship in the population.

The sample data are used to compute r, the correlation coefficient for the sample. If we had data for the entire population, we could find the population correlation coefficient. But because we have only have sample data, we cannot calculate the population correlation coefficient. The sample correlation coefficient, r, is our estimate of the unknown population correlation coefficient.

The symbol for the population correlation coefficient is ρ, the Greek letter “rho.”

The hypothesis test lets us decide whether the value of the population correlation coefficient

ρ is “close to zero” or “significantly different from zero”. We decide this based on the sample correlation coefficient r and the sample size n.

If the test concludes that the correlation coefficient is significantly different from zero, we say that the correlation coefficient is “significant.”

There is sufficient evidence to conclude that there is a significant linear relationship between x and y because the correlation coefficient is significantly different from zero. What the conclusion means: There is a significant linear relationship between x and y. We can use the regression line to model the linear relationship between x and y in the population.

If the test concludes that the correlation coefficient is not significantly different from zero (it is close to zero), we say that correlation coefficient is “not significant.”

“There is insufficient evidence to conclude that there is a significant linear relationship between

x and y because the correlation coefficient is not significantly different from zero.” What the conclusion means: There is not a significant linear relationship between x and y. Therefore, we CANNOT use the regression line to model a linear relationship between x and y in the population.

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We must consider the sample size n together with the correlation coefficient r's value.

To determine whether the linear relationship in the sample data is strong enough to utilize to model the relationship in the population, we conduct a hypothesis test of the "significance of the correlation coefficient."

The correlation coefficient for the sample, r, is calculated using the sample data. The population correlation coefficient could be discovered if we had data for the entire population. However, we are unable to determine the population correlation coefficient because we only have sample data. Our best guess for the unknown population correlation coefficient is the sample correlation coefficient, or r.

The Greek letter "rho" serves as the sign for the population correlation coefficient.

is "near zero" or "quite different from zero." Based on the sample correlation coefficient r and the sample size n, we make this determination.

We refer to the correlation coefficient as "significant" if the test results show that it differs considerably from zero.

The fact that the correlation coefficient differs sufficiently from zero is sufficient evidence that x and y are meaningfully related linearly. The result indicates that there is a significant linear relationship between x and y. The regression line can be used to model the population's linear relationship between x and y.

Because the correlation coefficient does not deviate considerably from zero, x and y. What the conclusion says is that x and y do not have a meaningful linear connection.

Answer:

Step-by-step explanation:

To solve this inequality graphically, we need to find the values of x that make the inequality true. We can start by looking at the absolute value expression on its own.

The absolute value of a number is always non-negative, so we can split the inequality into two cases: when the expression inside the absolute value is positive, and when it is negative.

For the first case, we have:

3|2x - 4| > 6

2x - 4 > 0

x > 2

For the second case, we have:

3|2x - 4| > 6

2x - 4 < 0

x < 2

So, the solution to the inequality is the union of these two cases: x > 2 or x < 2. In interval notation, this is written as (-infinity, 2) U (2, infinity).

Answer:

  (-∞, 1) ∪ (3, ∞)

Step-by-step explanation:

You want a graphical solution to 3|2x -4| > 6.

The attached graph is of the expression ...

  3|2x -4| -6

This is greater than 0 where x is a solution to the given inequality. It is greater than 0 for x < 1 or for 3 < x. In interval notation, the solution is ...

  (-∞, 1) ∪ (3, ∞)

The quotient will be 102.

What is a quotient?

In arithmetic, a quotient is a quantity produced by the division of two numbers. The quotient has widespread use throughout mathematics and is commonly referred to as the integer part of a division, or as a fraction or a ratio.

The number 8976 is called the numerator or dividend, and the number 88 is called the denominator or divisor.

The quotient of 8976 and 88, the ratio of 8976 and 88, as well as the fraction of 8976 and 88 all, mean (almost) the same:

8976 divided by 88, often written as 8976/88.

= 8976/88

= 102

Hence, the quotient will be 102.

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The graph of the line segment after the translation (x, y) → (x-2, y-3) and (x, y) → (x-4, y + 5) has been drawn.

Transformation is rearranging a graph by a given rule it could be either increment of coordinate or decrement or reflection.

If we reflect any graph about y = x then the coordinate will interchange it that (x,y) → (y,x).

As per the given coordinate,T(1,2) and U(4,6)

Apply the translation (x, y) → (x-2, y-3)

T(1,2) → T'(1 - 2,2 - 3) = T'(-1,-1)

U(4,6) →  U'(4 - 2,6 - 3) = U'(2,3).

Apply the translation (x, y) → (x-4, y + 5)

T(1,2) → T'(1 - 4,2 + 5) = T'(-3,7)

U(4,6) →  U'(4 - 4,6 + 5) = U'(0,11)

All points have been plotted below.

Hence"After the translations (x, y) → (x-2, y-3)  and (x, y) → (x-4, y + 5), the graph of the line segment has been drawn.".

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Answer:

Translation (x, y) → (x - 2, y - 3):

Translation (x, y) → (x - 4, y + 5):

Step-by-step explanation:

Given endpoints of line segment TU:

Translation 1 (blue on attached diagram)

This means to subtract 2 from the x-values of the endpoints, and subtract 3 from the y-values of the endpoints:

Therefore:

Translation 2 (red on attached diagram)

This means to subtract 4 from the x-values of the endpoints, and add 5 to the y-values of the endpoints:

Therefore:

A set of two or more linear equations involving the same set of variables make up a linear system of equations, which is the type of system of equations in question.

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So in this question, we have to convert the rectangular coordinates to polar coordinates.

Polar coordinates are (r, Q).

To convert rectangular coordinates to polar coordinates we use that x is equal to  rcosQ and y is equal to rsinQ

In this question x is equal to -2 and y is equal to 5.

Hence we have -2 is equal to rcosQ and 5 is equal to rsinQ .

From here, we have tanQ equal to -2.5 . Hence, Q = tan⁻¹ (-2.5)

We have x²+y² =r² and also x²+y² = 5²+2²=29 .

Hence, r=√29 and Q = tan⁻¹ (-2.5) .

Therefore the polar coordinates of (-2,5) are ( √29, tan⁻¹ (-2.5)).

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Answer: Lets do 2 1/7

Step-by-step explanation: first you will start off by turning it to an improper fraction.

you multiply the denominator with the whole number (2x7) which you get 14 then add the numrinator with the number you got from multiplying (14+1= 15 then you get 15/7

Then after that divide the fraction 15/7 and you get 2 with a remander of 1  

Here is a website you can use for fractions into whole numbers-https://www.cuemath.com

Guests who appear on talk shows and converse with one another for the benefit of the audience make up a (C) panel discussion.

Participants in a panel discussion are guests who appear on talk shows and engage in conversation with one another for the benefit of the audience.

A panel discussion, or simply a panel, is a gathering of people who talk about something in front of an audience, usually at fan conventions, conferences for business or academia, or on television.

Panels often have a moderator who leads the conversation and occasionally solicits questions from the audience with the intention of being both educational and entertaining.

Fan convention film panels have been attributed with increasing box office revenues by creating anticipation.

Therefore, guests who appear on talk shows and converse with one another for the benefit of the audience make up a (C) panel discussion.

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Answer:

A. Reflection

In order to enclose the garden's perimeter, vintage fence will be used. The perimeter of a rectangle-shaped garden is equal to the sum of the garden's two lengths and two widths.

In order to enclose the garden's perimeter, vintage fence will be used. The perimeter of a rectangle-shaped garden is equal to the sum of the garden's two lengths and two widths.

According to their estimates, our perimeter fence measures 220 feet, hence 220 = 2L + 2W.

We can make this more manageable if we divide everything by two: 110 = L + W

The width is now specified as being "exactly two-thirds of the length."

In math, the letter "=" equals the word "IS". Consequently, "the width is" becomes "W =," and "the two-thirds of the length" is precisely what it says, "(2/3) L."

W = (2/3)L is the result of adding these.

and we will add this W to the formula above (110 = L + W) to make 110 = L + (2/3)L.

If we substitute L with (3/3) L (that is, 1*L with 1 written 3/3) now we can add (3/3) as adding fractions requires a "common denominator."

L + (2/3)

L = (5/3)L

At this point, our equation is 110 = (5/3)L.

The right side (3/5) is now multiplied by the reciprocal on both sides, yielding (3/5)(110) = (3/5)(5/3)

L66 = L and W=2/3

L = (2/3)(66) = 44 = W

66 feet by 44 feet are the measurements of the square flower garden.

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Answer:

x = 1

Step-by-step explanation:

x + 7 = 8 ( isolate x by subtracting 7 from both sides )

x = 8 - 7 = 1

The value of ATC, AFC, TVC if TC = 6Q² + 5Q + 10, are 6Q + 5 + 10/Q, 5 + 6Q,  5Q + 6Q² respectively.

Average total cost (ATC) is calculated by dividing the entire cost by the total amount of output produced. The additional cost incurred by creating one more unit of output is known as marginal cost (MC).

Given:

TC = 6Q² + 5Q + 10,

Calculate the value of AFC as shown below,

AFC = 10 / Q

Calculate the value of TVC as shown below,

TVC = TC - TFC

TVC = 5Q + 6Q²

Calculate the value of AFC as shown below,

AFC = TVC / Q

AFC = 5Q + 6Q² / Q

AFC = 5 + 6Q

Calculate the value of ATC as shown below,

ATC = TC / Q

ATC = 6Q² + 5Q + 10 / Q

ATC = 6Q + 5 + 10/Q

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Note that to achieve a volume of 64cm³, the height of the cuboidal packet will equal 0.33cm²; If three layers of such are stacked on each other the total volume gained is: 192cm³.

The volume of a cuboid is given as L x B x H.

Where L = Lenght

B = Breath (or Width); and

H = Height.

To solve this problem, we need to first find the height of the box.

Since the volume of a Cuboid is given as L x B X H,

and we have

L = 16 and

B = 12, and

V= 64cm³

Then the expression for getting H will evolve from:

64 = 16 x 12 x H

64 = 192 x H

H = 64/192

H = 0.33cm

If three layers are placed on top of the volume amounts to:

64 x 3 = 192cm³

As a result, it is reasonable to declare that the height of the cuboidal packet will equal 0.33cm² to derive a volume of 64cm³; if three layers of such are piled on top of each other, the total volume acquired is: 192cm³.

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The Sample of student at random from a large statistics class.

a) Sample space for Record the student's letter grade at the end of the course is , S = {A, B, C, D, F }. So, Correct option is option D.

b) Sample space for the student did or did not take a math class in each of the two previous years of school is S = {1st Year - Yes and 2nd Year - Yes, 1st Year - No and 2nd Year - Yes, 1st Year - Yes and 2nd Year - No, 1st Year - No and 2nd Year - No}. So, correct option is option C.

Sample Space: It is defined as the list of all possible outcome for given experiment.

a) record of Students grade are A, B, C, D, F.

These are all possible outcome for Student's letter grade at the end of course.

S= {A, B, C, D, F }

b) Possible outcome for whether student did or

did not take math class in each of the previous year of school is,

1st - Yes & 2nd - yes , 1st-yes & 2nd no

1st- NO & 2nd yes, 1st-NO & 2nd_NO

Hence, S = { 1st year - Yes & 2nd year - Yes,

1st year-NO & 2nd year- Yes, 1st year- yes & 2nd year - NO, 1st year - No & 2nd year - No}

Hence 3rd option is correct option.

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Complete question :

choose a student at random from a large statistics class. describe a sample space s for each of the following. (in some cases you may have some freedom in specifying s.)

a) Record the student's letter grade at the end of the course.

A) S = {0,10,20,30,...,100}

B) S = {0,1,2,...,100}

C) S = {Fail, Passed, Good, Very Good, Excellent}

D) S = {A, B, C, D, F}

b) Ask whether the student did or did not take a math class in each of the two previous years of school.

A) S = {Yes, No}

B)S = {Yes for each of the two years, No for each of the two years}

C) S = {1st Year - Yes and 2nd Year - Yes, 1st Year - No and 2nd Year - Yes, 1st Year - Yes and 2nd Year - No, 1st Year - No and 2nd Year - No}

D) S = {1st Year - Yes, 1st Year - No, 2nd Year Yes, 2nd Year - No}