Can someone help with explanation please:)

Answer:

Choice B) 42 minutes

Step-by-step explanation:

3.5 hours / 5 loads = 0.7 hours per one load

0.7 x 60 = 42

Answer:

Answer:

4.12 miles

Step-by-step explanation:

Use distance formula

d^2 = (-8- -4)^2 + ( -9 - -10)^2

d^2 =   16   +   1

d^2 = 17

d = sqrt 17 = 4.12 miles

The polynomial -8m²n - 7m²n can be factored using the common factor -m²n. The complete factored form of the polynomial is (-m²n) (8 + 7a).

To find the complete factored form of the polynomial -8m²n - 7m²n, we can factor out common terms from both the terms. The common factor in the terms -8m²n and -7m²n is -m²n. We can write the polynomial as:

-8m²n - 7m²n = (-m²n) (8 + 7a)

Therefore, the complete factored form of the polynomial -8m²n - 7m²n is (-m²n) (8 + 7a). This expression represents the original polynomial in a multiplied form. We can expand this expression using distributive law to verify that it is equivalent to the original polynomial.

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Answer:

C : 45

Step-by-step explanation:

Have a nice day :)

Answer:

-2

Step-by-step explanation:

To find the slope pick ANY 2 points on the line and see what you had to do to get from one point to another point.

Keep in mind that slope = rise/run , or m = difference in y /difference in x

For example, Start at (0,0) and Go to (6,-3)

To get from one point to the other you have to go up 6 and left 3 so slope is

m=6/-3 = -2

Answer: cos4

Step-by-step explanation: 50 meters

B. 50-√3 meters

C. 100 meters

D. 100-√3 meters

40. What expression is used to answer: "A 4-m tall man stands on horizontal ground 43 m from a tree.

The angle of depression from the top of the tree to his eyes is 22°. Estimate the height of the tree."

A. sin 22

B. cos 22

C. tan 22

D. cot 22

Answer:

(0,5) or 5

Step-by-step explanation:

the y intercept is the point where the line crosses the y-axis. given this info, its given that the y intercept would be 5, or (0,5) in coordinates ^_^

Answer:

0,5

Step-by-step explanation:

So this is actually simpler than it looks. All you have to do is see what point starts out with the x coordinate at zero. The center of the graph is 0,0, so the y intercept is 0,5 because that is the first graph of y.  The order is 0,5 1,6 2,7 so on and so on. Hope my explanation made sense. There is a reason why I'm not a teacher. Lol.

1. The x - intercepts of the parabola are

2. The meaning of the x-intercepts are the plane takes of at x = 2.5 s and lands at x = 7.5 s

3. The vertex of the parabola is at (5, 80).

A parabola is a curved shape

1. Given the parabola above, to find the x - intercepts, we proceed as follows.

The x-intercepts are the points at which the graph cuts the x-axis.

They are

2. The meaning of the x-intercepts in this problem are the points where the plane takes off and lands on the ground.

The plane takes of at x = 2.5 s and lands at x = 7.5 s

3. The vertex is the maximum point on the graph.

So, we see that the vertex is at x = 5 s and y = 80 ft

So, the vertex is at (5, 80).

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Answer:

Option (B)

Step-by-step explanation:

Coordinates of the vertices of the rectangle were A(0, 0), B(a, 0), C(a, b) and D(0, b)

Formula to determine the distance between two points with the vertices (x, y) and (x', y') is,

d = \(\sqrt{(x-x')^2+(y-y')^2}\)

For the length of AD,

AD = \(\sqrt{(0-0)^2+(b-0)^2}\)

     = \(\sqrt{b^2}\)

     = b

Therefore, Option (B) will be the answer.

Qualitative with 2 possible outcomes of variable is required to construct a confidence interval for a population proportion.

The goal of qualitative research is to collect and analyze non-numerical (descriptive) data in order to comprehend people's attitudes, beliefs, and motivations in relation to their social reality. In-depth interviews, focus groups, or observations are frequently used in this kind of study to gather the information that is rich in context and detail.

To investigate complicated phenomena or to learn more about people's viewpoints and experiences on a certain subject, qualitative research is frequently used. It is especially helpful for academics who wish to comprehend the meaning that individuals attribute to their experiences or who want to identify the fundamental causes of people's conduct. Ethnography, grounded theory, discourse analysis, and interpretative phenomenological analysis are examples of qualitative approaches.

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Answer:

49)   \(12\,b^4\)

50)   \(200\,x^6\)

Step-by-step explanation:

Use the properties of exponent to reduce this expressions:

a)  \(3\,b\,*\,4 \,b^3=(3\,*\,4)\,(b\,*\,b^3)=12\,b^{(1+3)}=12\,b^4\)

b)  \(5\,x^2\,*\,8\,x\,5\,*\,x^3=(5\,*\,8\,*\,5)\,(x^2\,*\,x\,*\,x^3)=200\,x^{(2+1+3)}= 200\,x^6\)

Answer:

The value is  \(P(X = 12) =  0.0356 \)

Step-by-step explanation:

From the question we are told that

   The number of boys in the class is  \(b = 12\)

   The number of girls in the class is  \(g = 8\)

   The total number of students is  is  n  =  20

    The number of weeks is  N  = 20

The probability of selecting a girl is mathematically represented as

     \(p = \frac{8}{20}\)

=> \(p = 0.4\)

The probability of not  selecting a girl is mathematically represented as  

     \(q = 1- \frac{8}{20}\)

=> \(q =0.6\)

Generally the selection of students from the class  follows a binomial distribution  

i.e  

         \(X  \~ \ \ \  B(n , p)\)

and the probability distribution function for binomial  distribution is  

      \(P(X = x) =  ^{N}C_x *  p^x *  (q)^{n-x}\)

Here C stands for combination hence we are going to be making use of the combination function in our calculators  

Generally the probability that there are exactly 12 weeks in which a girl is selected is mathematically represented as

      \(P(X = 12) =  ^{20}C_{12} *  0.4^{12} *  (0.6)^{20-12}\)

      \(P(X = 12) =  125970 *  [1.678*10^{-5}]*  0.016796 \)

=>   \(P(X = 12) =  0.0356 \)

Answer:

161700 ways.

Step-by-step explanation:

The order in which the transistors are chosen is not important. This means that we use the combinations formula to solve this question.

Combinations formula:

\(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by the following formula.

\(C_{n,x} = \frac{n!}{x!(n-x)!}\)

In this question:

3 transistors from a set of 100. So

\(C_{100,3} = \frac{100!}{3!(100-3)!} = 161700\)

So 161700 ways.

Answer:

A

Step-by-step explanation:

In order to multiply a whole number by a fraction, you can write the whole number in fraction form. -12 can also be written as    \(\frac{-12}{1}\).

Now you can write out    \(\frac{-12}{1}\)  ×  \(\frac{20}{21}\)  

Multiply the numerators by each other and the denominators by each other to create one fraction.

-12 × 20 = -240     and 1 × 21 = 21

  \(\frac{-12}{1}\)  × \(\frac{20}{12}\)   = \(\frac{-240}{21}\)      and now you can simplify the fraction by finding the greatest common factor of the denominator and numerator.   -240 and 21 have the greatest common factor of 3. Divide each side by 3 and get the fraction -80/7

(a). The graph of y = -f(x) is shown in the image below.

(b). The graph of y = g(-x) is shown in the image below.

By reflecting the parent absolute value function g(x) = |x + 2| - 4 over the x-axis, the transformed absolute value function can be written as follows;

y = -f(x)

y = -|x + 2| - 4

Part b.

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation (formula):

y - y₁ = m(x - x₁)

Where:

First of all, we would determine the slope of this line;

Slope (m) = rise/run

Slope (m) = -2/4

Slope (m) = -1/2

At data point (0, 5) and a slope of -1/2, a linear equation for this line can be calculated by using the point-slope form as follows:

y - y₁ = m(x - x₁)

y - 5 = -1/2(x - 0)

g(x) = -x/2 + 5, -4 ≤ x ≤ 4.

y = g(-x)

y = x/2 + 5, -4 ≤ x ≤ 4.

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The average diameter involves adding up all the diameters of the trees in the dataset and dividing the sum by the total number of trees.

"Average" is a term used to describe the central tendency of a dataset. In other words, it is a measure that represents the typical or common value of a group of numbers.

Now, let's dive into the specifics of the dataset used in this activity. The dataset contains information about the trees in New York City and was collected by the Department of Parks and Recreation in 2015. To find the average diameter of trees in NYC in 2015, we need to look at the diameter column in the dataset and calculate the mean.

The resulting value will give us the average diameter of trees in NYC in 2015.

After calculating the average diameter of trees in the dataset, we can say that the average diameter of trees in New York City in 2015 was X inches (insert actual value once available).

This means that the majority of trees in NYC in 2015 had a diameter around this value.

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Answer: \(3x^2+x-9\)

Step-by-step explanation:

f(x) + g(x)

Given: f(x) = -3 and g(x) = 3x^2+x-6

\(-3+3x^2+x-6\)

Final answer:

\(3x^2+x-9\)

Answer:

D. its a two dimensional object

Answer:

A. It is a polygon

C. It is a one-dimensional object

The shape is a polygon in two dimensions since a polygon must have at least three straight sides.

Answer:

The surface area is 731 ft^2

To compute the ROC value for each of the given thresholds, we need to consider the following probabilities and their corresponding ground truth values:

| Probability | Ground Truth |

| ----------- | ------------ |

| 0.0         | 0            |

| 0.25        | 1            |

| 0.5         | 0            |

| 0.75        | 1            |

| 1.0         | 1            |

For each of the given thresholds, we can compare the probabilities with the corresponding ground truths and compute the True Positive Rate (TPR) and False Positive Rate (FPR).

(1) For threshold = 0, the TPR would be 0 and the FPR would be 1, so the ROC value would be 0.

(2) For threshold = 0.25, the TPR would be 1 and the FPR would be 1, so the ROC value would be 1.

(3) For threshold = 0.5, the TPR would be 1 and the FPR would be 0.5, so the ROC value would be 0.5.

(4) For threshold = 0.75, the TPR would be 1 and the FPR would be 0.25, so the ROC value would be 0.75.

(5) For threshold = 1, the TPR would be 1 and the FPR would be 0, so the ROC value would be 1.

Finally, to approximate the AUROC using the above results, we can use the Riemann sum formula. The AUROC approximation would be the sum of the ROC values multiplied by the width of each interval (0.25): AUROC = 0 + 10.25 + 0.50.25 + 0.750.25 + 10.25 = 1.25.

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The factorized form of the quadratic equation is:

4(x - 3)*(x + 0.25) = 0

The quadratic equation is 4x² - 11x -3 = 0

To do that, we need to find the zeros, so let's use the quadratic formula:

\(x = \frac{11 \pm \sqrt{(-11)^2 - 4*4*-3} }{2*4} \\\\x = \frac{11 \pm 13 }{8}\)

Then the two roots are:

x = (11 + 13)/8 = 3

x = (11 - 13)/8 = -2/8 = -0.25

Then the factorized form is:

4(x - 3)*(x + 0.25) = 0

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Answer: rwar

Step-by-step explanation:

Answer:

can you add a picture of the triangle

Step-by-step explanation:

Answer:

e-5=2f

take '-5' to the other side where '2f' is

e=2f+5

Answer: The percentage of people surveyed who liked blue cars is 50%.

Step-by-step explanation:

Total number of people partaking in survey= 36

number of people who like blue cars= 18

therefore, fraction of people who liked blue cars= \(\frac{18}{36}\)

hence, percentage of people who liked blue cars= (18/36)*100 %

                                                                                  = 50%  

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Answer:

Percentage of people who like blue-coloured cars is 50%

Number of people who were surveyed=36

Number of people who like blue-colored cars=18

Therefore, Percentage of people who like blue cars= (Number of people who like blue cars/ Number of people who were surveyed)*100

=(18/36)*100

=50%

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Answer:

The value of a₅ is 1875.

Step-by-step explanation:

Given:

a₁ = 3

aₙ = 5aₙ₋₁

To find the value of a₅, we can apply the recursive formula to compute each term successively:

Step 1: Compute a₂

a₂ = 5a₁ = 5(3) = 15

Step 2: Compute a₃

a₃ = 5a₂ = 5(15) = 75

Step 3: Compute a₄

a₄ = 5a₃ = 5(75) = 375

Step 4: Compute a₅

a₅ = 5a₄ = 5(375) = 1875

Answer:The relation shows the relationship between INPUT and OUTPUT. Whereas, a function is a relation which derives one OUTPUT for each given INPUT. Note: All functions are relations, but not all relations are functions

Step-by-step explanation: