Help please anyone I really need it.

(he got 2 wrong answers, and 13 correct answers)

=====================================================

Explanation:

c = number of correct answers

w = number of wrong answers

m = number of missing answers (ie, omitted answers)

7c = number of points awarded from just the correct answers

-2w = number of points awarded from the wrong answers. Note the negative to indicate we lose points here.

0m = 0 = points from the missing answers. We don't have to worry about this portion

In total, Jack would earn 7c-2w points. Since he actually earned 87 points, we can write the equation 7c-2w = 87. We'll come back to this later.

-----------------------

The quiz has 20 questions, so c+w+m = 20 is another equation we'll be working with. Solve for c to get c = -w-m+20. Plug this into the equation 7c-2w = 87 to get...

7c-2w = 87

7(-w-m+20)-2w = 87 ... replace c with (-w-m+20)

-7w-7m+140-2w = 87 ... distribute

-9w-7m+140 = 87

-9w-7m = 87-140

-9w-7m = -53

9w+7m = 53

----------------------

From here, you use trial and error. We don't have enough information to finish solving the system. We would need 3 equations to solve for the 3 unknowns.

What we can do is make a guess of what w could be and use that to find m. Luckily there is a small list of possible values for w.

So let's say w = 0

9w+7m = 53

9(0)+7m = 53 ... plug in w = 0

7m = 53

m = 53/7 ... divide both sides by 7

m = 7.57

We got a non-whole number, so there is no way w = 0 since we can't have 0.57 of a question missing. Jack either answers the question, or he skips it. He can't have both happen.

---------------------

Let's repeat for w = 1

9w+7m = 53

9(1)+7m = 53 ... replace w with 1

9+7m = 53

7m = 53-9 ... subtract 9 from both sides

7m = 44

m = 44/7 ... divide both sides by 7

m = 6.28

So we can see that w = 1 isn't possible either.

---------------------

However, w = 2 is possible

9w+7m = 53

9(2)+7m = 53

18+7m = 53

7m = 53-18

7m = 35

m = 35/7

m = 5

Meaning that Jack got w = 2 wrong answers and skipped over m = 5 questions. The number of correct answers is c = 20-m-w = 20-5-2 = 13

-----------------------------------

An alternative to using trial-and-error is to use a graph.

Replace w and m with x and y respectively. So we go from 9w+7m = 53 to 9x+7y = 53

Use a graphing tool, or plot the graph on graph paper, to get what you see in the diagram below. I used the program GeoGebra to graph.

Then notice how the graph goes through the point (2,5) which means x = 2 and y = 5. Replace x and y with w and m to find (w,m) = (2,5)

note: the point (5,1) looks like it also lies on the graph, but it is not a solution. It's just a point that is very close to the line. I recommend you try out (w,m) = (5,1) and you'll see it doesn't work.

Answer:

X= -8.059

Step-by-step explanation:

Given

. −34(x+7)=36

We can open the bracket

-34x - 238=36

We can collect like terms

-33x = 36+238

-34x = 274

Divide both side by -34

X= 274/34

X= -8.059

If test the options non is equivalent to the gotten answer.

The scale factor used in the dilation of the triangles is 2/3

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

ABC  = 18

PQR = 12

The scale factor is calculated as

Scale factor  = PQR/ABC

Substitute the known values in the above equation, so, we have the following representation

Scale factor  = 12/18

Evaluate

Scale factor  = 2/3

Hence, the scale factor used in the dilation of the triangles is 2/3

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Answer:

The answer is C.

Step-by-step explanation:

The < sign means that it will be less than so you can remove A and D. But it's not B either because of the $2 off coupon. Off means you would be subtracting meaning it'll look like this 5x < 3x - $2. So the correct answer is C.

Hope this helps!

The inequality is transformed into a sentence will be the cost of 5 notebooks is less than the cost of 3 notebooks plus a $2 pen. Then the correct option is C.

Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.

The act of converting mathematical equations into a specified statement is known as equation-to-sentence transformation.

The inequality is given below.

5x < 3x + 2

The inequality is transformed into a sentence will be the cost of 5 notebooks is less than the cost of 3 notebooks plus a $2 pen. Then the correct option is C.

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Answer:

1) The equation that has infinitely many solution is y = -8/11·x + 4

2) The equation of the graph that has no solution is y = -8/11·x + 1

3) The equation of the line that has only one solution is y  = -1/4·x + 2

Step-by-step explanation:

1) The points on the graph are;

(0, 4), and (5.5, 0)

The slope of the line defined by the given two points, we have;

(0 - 4)/(5.5 - 0) = -40/55 = -8/11

The equation of the straight line graph in point and slope form, we have;

y - 4 = -8/11 × (x - 0)

y - 4 = -8/11·x

For the equation for the system that has infinitely many solution, we have;

y = -8/11·x + 4

2) For the equation whose graph foes through the point (0, 1) and the system has no solution, we have;

An equation that has no solution with the equation y = -8/11·x + 4, is parallel to y = -8/11·x + 4, and therefore, the slope are equal

Therefore, the equation whose graph foes through the point (0, 1) and the system has no solution, in point and slope form is given as follows;

y - 1 = -8/11 × (x - 0)

y - 1 = -8/11·x

The equation of the graph that has no solution is therefore;

y = -8/11·x + 1

3) For the equation of the graph that goes through the point (0, 2), and has a common solution with the system at (4, 1), we have;

The slope of the graph is (1 - 2)/(4 - 0) = -1/4

The equation of the line that has only one solution with the system in point and slope form is given as follows;

y - 2 = -1/4×(x - 0)

y - 2 = -1/4·x

The equation of the line that has only one solution in standard form is therefore;

y  = -1/4·x + 2

Option c. 2

Among the given targets, two targets are correctly described:

Regarding chemical pesticide use, the target is to reduce it by 50% by 2050. This aligns with the vision presented in the Green Food System Strategy.

In terms of chemical fertilizers, the target is to reduce the use of chemical fertilizers produced in Japan from fossil fuels by 30% by 2050. This target is also consistent with the strategy's vision.

The remaining two targets are not correctly described:

The target of expanding the organic market and increasing the ratio of organic farming to arable land to 30% (1 million hectares) by 2050 is not mentioned in the given options.

The target of reducing household food loss by half from the FY2000 level by 2030 is also not mentioned in the given options.

Therefore, the correct answer is option c. 2, as two of the targets are accurately described in the provided options.

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Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the matrix is not given.

The general form of a matrix is:

\(b[m*n] =\left[\begin{array}{ccc}b_{11}&b_{12}&b_{13}........b{1n}}\\b_{21}&b_{22}&b_{23}........b{2n}\\b_{31}&b_{32}&b_{33}........b{3n}\\ \\ \\b_{m1}&b_{m2}&b_{m3}........b{mn}\end{array}\right]\)

Where m and n represent the \(number\ of\ rows\ and\ columns\) respectively.

Notice the position of b11

This means that b11 is at the first column and first row.

Take for instance matrix b is:

\(b = \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right]\)

The element at the first row and first column is 1.

Hence

\(b_{11} = 1\)

We have to show that cn(x) can easily be computed from cn-1(x).Then, cn(x) is given by:cn(x) = (1/n) * x * cn-1(x), for n>0, and c0(x) = 1. Let’s write a Python function to compute the Taylor series of the exponential function of order N. We will make it such that it only keeps two local variables.

We can compute the exponential function using the Taylor series as follows:

def exp_taylor(x, N):

sum = 1.0

term = 1.0

for n in range(1, N):

term *= x / n

sum += term

return sum

This function takes two arguments x and N, where x is the value for which the exponential function is to be computed, and N is the order of the Taylor series expansion. The function returns the sum of the Taylor series up to the Nth order.

Now, let’s make a plot of the convergence with N by comparing the result to numpy's evaluation of the exponential for some x. We can use the matplotlib library to make a plot.

The following code does this:

import numpy as npimport

matplotlib.pyplot as plt

#define the values of x

N = 100

x = np.linspace(-5, 5, N+1)

#compute the exponential using the Taylor series

y_taylor = [exp_taylor(xi, N) for xi in x]

#compute the exponential using numpy

y_np = np.exp(x)

#make the plot

plt.plot(x, y_taylor, label='Taylor')

plt.plot(x, y_np, label='Numpy')plt.xlabel('x')

plt.ylabel('y')plt.legend()plt.show()

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Answer:

All possible ordered pairs are as follows:

Step-by-step explanation:

In an ordered pair (x, y),

Let

P = {x, y}

X = {1, 2, 3}

So, the number of possible ordered pairs = 2 × 3 = 6

Therefore, all possible ordered pairs are as follows:

Answer:

C 65/9

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

Answer:

f(x) = -100(1.05)^(x+5) + 50

Step-by-step explanation:

Here, we want to write an equation that represents the transformation

5 units right means 5 units on the positive x-axis

50 units up means we add this to the total y value

So the resulting equation will be;

f(x) = -100(1.05)^(x+5) + 50

As per the combination method, there are 42504 different campout crews are possible.

Combination method:

In math, combination method means a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter.

Given,

Scout troop 456 has 24 members. the scoutmaster appoints a 5-member campout crew composed of a leader, a cook, and a cleanup crew (3 scouts).

Here we need to find the number of different campout crews are possible.

According to the nCr formula, here the value of

n = 24

And the value of r = 5

Then the number of possible combinations are calculated as,

=> ²⁴C₅ = 24!/5!(24 - 5)!

=> ²⁴C₅ = 24!/5!19!

=> ²⁴C₅ = 42504

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Answer:

13

Step-by-step explanation:

add 2 and 5

add 2 and 4

add 7 and 6

13

Answer:

13

Step-by-step explanation:

Number of clients who do not play either the piano or the guitar is 22

To find the number of clients who do not play either instrument, we need to subtract the number of clients who play either the piano or the guitar or both from the total number of clients.

Let A be the set of clients who play the piano, and B be the set of clients who play the guitar. Then, we can use the formula A union B

|A ∪ B| = |A| + |B| - |A ∩ B|

where |A ∪ B| is the number of clients who play either the piano or the guitar or both, |A| is the number of clients who play the piano, |B| is the number of clients who play the guitar, and |A ∩ B| is the number of clients who play both instruments

Substituting the given values, we get

|A ∪ B| = 46 + 58 - 17

|A ∪ B| = 87

Therefore, the number of clients who do not play either instrument is:

109 - 87 = 22

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Answer: 1/10 is literally only one out of 10. the fraction to a decimal is 0.1 so, 3 x 0.1 is 0.3 and 3 x 10 is 30.

0.3 is less than 30.

Step-by-step explanation:

A) Pansy Meadows Primary Care Clinic's total revenue per month is $10,000. B) The clinic's monthly profit is a loss of $15,000. C)  if the commercial insurance company changes the reimbursement rate to $65, the monthly profit would be $30,000. D) if all commercially insured patients are covered by a capitated contract, the monthly profit would be a loss of $33,000.

To calculate the clinic's total revenue, monthly profit/loss, and the impact of changes in reimbursement rates, we'll use the given information and perform the necessary calculations.

Given:

Number of office visits per month = 1000

Fixed costs = $25,000 per month

Variable costs per office visit = $10

A) Total revenue per month:

Revenue per office visit = $10 (variable cost per visit)

Total revenue per month = Revenue per office visit * Number of office visits per month

Total revenue per month = $10 * 1000

Total revenue per month = $10,000

Therefore, Pansy Meadows Primary Care Clinic's total revenue per month is $10,000.

B) Monthly profit (loss):

Profit (loss) = Total revenue per month - Fixed costs - (Variable costs per office visit * Number of office visits per month)

Profit (loss) = $10,000 - $25,000 - ($10 * 1000)

Profit (loss) = -$15,000

Therefore, the clinic's monthly profit is a loss of $15,000.

C) Impact of changing the commercial insurance reimbursement rate to $65:

To determine the impact on profitability, we need to recalculate the monthly profit using the new reimbursement rate.

New total revenue per month = $65 * 1000 = $65,000

Profit (loss) = New total revenue per month - Fixed costs - (Variable costs per office visit * Number of office visits per month)

Profit (loss) = $65,000 - $25,000 - ($10 * 1000)

Profit (loss) = $30,000

Therefore, if the commercial insurance company changes the reimbursement rate to $65, the monthly profit would be $30,000.

D) Impact of all commercially insured patients being covered by a capitated contract:

i. Monthly revenue:

Revenue per patient per month = $2 (capitated payment per patient)

Monthly revenue = Revenue per patient per month * Number of office visits per month

Monthly revenue = $2 * 1000

Monthly revenue = $2,000

ii. Monthly profit/loss:

Profit (loss) = Monthly revenue - Fixed costs - (Variable costs per office visit * Number of office visits per month)

Profit (loss) = $2,000 - $25,000 - ($10 * 1000)

Profit (loss) = -$33,000

Therefore, if all commercially insured patients are covered by a capitated contract, the monthly profit would be a loss of $33,000.

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The original conditional statement is true: "If two angles are congruent, then they have the same degree measure." The converse is true: "If two angles have the same degree measure, then they are congruent." The inverse is true: "If two angles are not congruent, then they do not have the same degree measure." The contrapositive is true: "If two angles do not have the same degree measure, then they are not congruent."

The given conditional statement is: "If two angles are congruent, then they have the same degree measure."

The truth value of this conditional statement is true.

Reasoning:

The statement is a well-known mathematical fact. Congruent angles are defined as angles that have the same measure. Therefore, if two angles are congruent, it implies that they have the same degree measure. This statement holds true for all pairs of congruent angles.

Converse: "If two angles have the same degree measure, then they are congruent."

The converse of the given conditional statement is also true. If two angles have the same degree measure, it implies that they are congruent. This is a logical consequence of the definition of congruent angles.

Inverse: "If two angles are not congruent, then they do not have the same degree measure."

The inverse of the given conditional statement is also true. If two angles are not congruent, it implies that they do not have the same degree measure. This is the negation of the original statement.

Contrapositive: "If two angles do not have the same degree measure, then they are not congruent."

The contrapositive of the given conditional statement is true. If two angles do not have the same degree measure, it implies that they are not congruent. This is the negation of the converse statement.

In summary:

- The original conditional statement is true: "If two angles are congruent, then they have the same degree measure."

- The converse is true: "If two angles have the same degree measure, then they are congruent."

- The inverse is true: "If two angles are not congruent, then they do not have the same degree measure."

- The contrapositive is true: "If two angles do not have the same degree measure, then they are not congruent."

All related conditionals are true, and no counterexamples can be found for any of the statements.

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Based on hypothetical data, one can create a bar graph and a pie chart by following the steps below

(i) Bar graph:

To make a bar graph, one need to plot the number of friends who prefer each type of game on the y-axis and the types of games (indoor/outdoor) on the x-axis.

So lets say:

To make  (ii) Pie chart:

Lastly, label all sector with the all the game type (indoor/outdoor).

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Using a hypothetical scenario,  the data collected are  given below:

Friend 1: Indoor

Friend 2: Outdoor

Friend 3: Indoor

Friend 4: Outdoor

Friend 5: Outdoor

Friend 6: Indoor

Friend 7: Indoor

Friend 8: Outdoor

Friend 9: Indoor

Friend 10: Outdoor

If two exact objects are thrown from identical catapults, it is expected the catapult with the longer arm length throws the ball farther.

Some of the factors that influence the distance in this case are:

In general, an increased arm length increases the distance. This means that the catapult with a longer arm length will throw the ball farther.

Note: This question is incomplete because there is not enough information about the catapults; due to this, I answered it based on general knowledge.

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Answer:

Natalie's catapult will launch the ball further than Aiden's catapult will

Step-by-step explanation:

(a) The natural brute-force algorithm for counting inversions in an array is to compare each pair of elements and count the inversions.

(b) The complexity of the natural brute-force algorithm is O(n²), where n is the size of the array.

(c) One possible algorithm to count inversions in O(n log n) time is the merge sort algorithm with some additional bookkeeping.

The steps of the algorithm are as follows:

1. Divide the array into two halves.

2. Recursively count the inversions in each half.

3. Merge the two sorted halves while counting the inversions.

4. Return the total count of inversions.

Here's the implementation of the algorithm:

def count_inversions(arr):

   if len(arr) <= 1:

       return arr, 0

   mid = len(arr) // 2

   left, inv_left = count_inversions(arr[:mid])

   right, inv_right = count_inversions(arr[mid:])

   merged, inv_merge = merge_and_count(left, right)

   total_inversions = inv_left + inv_right + inv_merge

   return merged, total_inversions

def merge_and_count(left, right):

   merged = []

   inversions = 0

   i = 0

   j = 0

   while i < len(left) and j < len(right):

       if left[i] <= right[j]:

           merged.append(left[i])

           i += 1

       else:

           merged.append(right[j])

           j += 1

           inversions += len(left) - i

   merged += left[i:]

   merged += right[j:]

   return merged, inversions

# Usage example

arr = [30000, 80000, 20000, 40000, 10000]

sorted_arr, inversions = count_inversions(arr)

print("Inversions:", inversions)

The above algorithm has a time complexity of O(n log n) because it performs a divide-and-conquer approach using merge sort, and the merging step takes O(n) time while splitting the array recursively takes O(log n) time.

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Answer:

x = − 1 ± √6, so A + D I believe

Step-by-step explanation:

Answer:

1(kilometer/hour) = 1000(meters) / 3600(seconds) can also be expressed as 1(kilometer/hour) = 5/18 (meters/second), which is its simplified form. To convert km/h to m/s, directly multiply the given value of speed by the fraction 5/18

Step-by-step explanation:

so the answer wil be 20.8333 m/s

Answer:

111 degrees

Step-by-step explanation

Alternate int. Angles

The minimum distance you can park from a driveway leading from a fire department can vary depending on the local laws and regulations in your area.

However, it is important to keep in mind that fire departments need clear and unobstructed access to their driveways at all times, in case of an emergency.
In many areas, the law requires a minimum distance of 20 feet from the edge of a fire department driveway to the nearest parked vehicle. This distance allows fire trucks and emergency vehicles enough space to turn, enter, and exit the driveway without any obstruction or delay.
It is also important to note that blocking a fire department driveway can result in a hefty fine or even a vehicle being towed away. This is because obstructing the entrance and exit to a fire department can cause unnecessary delay, which can be dangerous or even fatal in emergency situations.
Overall, it is important to always be aware of your surroundings and the laws in your area when parking near a fire department or any other emergency service. By doing so, you can ensure the safety and accessibility of these essential services at all times.

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We are given the line

x - 5y = -4

We need to get this in slope intercept form

x-5y -x = -x-4

-5y = -x-4

Divide by -5

05y/-5 = -x/-5 -4/-5

y = 1/5x + 4/5

The slope oif this line is 1/5

We want to find a line that is parallel. Parallel lines have the same slope, so the new line will have a slope of 1/5

The new line contains the point(0,0)

Slope intercept form is y = mx+b where m is the slope and b is the y intercept

y = 1/5x + 0

y = 1/5x

(We know the y intercept is 0 since the point is (0,0) it crosses the y axis at 0)

Answer:

100%

Step-by-step explanation:

The formula to calculate the return on investment is:

ROI=(Net Profit/Total Investment)*100

Net profit=Revenues-expenses=500-(500*0.6)=500-300=200

Total investment=250-(250*0.2)=250-50=200

Now, you can replace the values:

ROI= (200/200)*100

ROI= 100%

According to this, the answer is that If Angelo Company can reduce its capital investment by 20% in Adams Company, return on investment will be 100%.

????????

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

Both of the figures have the same perimeter (4n + 4) hence equal in perimeter,

We know the perimeter of any 2D figure is the sum of the lengths of all the sides except the circle and the area of a rectangle is the product of its length and width.

We know the perimeter of a rectangle is 2(length + width) and the perimeter of a square is 4×side.

Given, A rectangle with sides of length n+2 and n.

∴ Perimeter = 2((n + 2) + n)

= 2(2n + 2).

= 4n + 4.

Also given, A square with sides of length n + 1.

∴ Perimeter = 4(n + 1).

= 4n + 4.

So, yes the two shapes are equal in the perimeter.

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Answer:

Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.Step-by-step explanation: