What is the volume of a box that measures 12cm by 7cm by 19cm

The expressions for the lengths of the segments obtained using vectors notation are;

a. i. \(\overrightarrow{LA}\) = q - (1/2)·p  ii. \(\overrightarrow{AN}\) = (2/7)·(p - q)

b. The expressions for \(\overrightarrow{MN}\), \(\overrightarrow{LA}\), and \(\overrightarrow{AN}\) indicates;

\(\overrightarrow{MN}\) = (1/84)·(46·q - 11·p)

A vector is a quantity that has magnitude and direction and are expressed using a letter aving an arrow in the form, \(\vec{v}\)

a. i. \(\overrightarrow{LA}\) = \(\overrightarrow{BA}\) - \(\overrightarrow{LB}\) =  \(\overrightarrow{BA}\) - (1/2) × \(\overrightarrow{CB}\)

\(\overrightarrow{BA}\) - (1/2) × \(\overrightarrow{CB}\) = q - (1/2)·p

\(\overrightarrow{LA}\) = q - (1/2)·p

ii. \(\overrightarrow{AC}\) = \(\overrightarrow{BC}\) - \(\overrightarrow{BA}\)

\(\overrightarrow{AN}\) = (2/7) × \(\overrightarrow{AC}\)

\(\overrightarrow{AN}\) = (2/7) × \(\overrightarrow{BC}\) - \(\overrightarrow{BA}\)

\(\overrightarrow{AN}\) = (2/7) × (p - q)

b. \(\overrightarrow{MN}\) = \(\overrightarrow{MA}\) + \(\overrightarrow{AN}\)

\(\overrightarrow{MA}\) = (5/6) × \(\overrightarrow{LA}\)

\(\overrightarrow{LA}\) = q - (1/2)·p

\(\overrightarrow{AN}\) = (2/7) × (p - q)

Therefore;

\(\overrightarrow{MN}\) = (5/6) × ( q - (1/2)·p) + (2/7) × (p - q)

\(\overrightarrow{MN}\) = (1/84) × ( 70·q - 35·p + 24·p - 24·q) = (1/84)(46·q - 11·p)

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Answer:

1. How many packages are delivered each hour.

2. Find the correlating variable on the graph.

3. 105 packages

4. If the truck driver delivers 15 packages an hour. Divide 120 by 15 to get 8 hours. 120/15= 8 hours to deliver 120 pqckages.

The equation of the line is y = -x + 3

Equation of a straight line is usually of the form y = mx + c

where:

m = slope

c = y intercept

slope = ( 5 - -2 ) / ( -2 - 5 )

= ( 5 + 2 ) / -7

= 7 / -7

= -1

The y intercept is found from the graph to be 3

the equation of lthe line is

y = -1 ( x ) + 3

y = -x + 3

Therefore the equation of the line as gotten from the graph is y = -x + 3

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The statement that describes when the plans are based on the same number of aerobic exercise sessions is:

The number of strength-training exercises and aerobic exercises per week is calculated as follows:

Let a be the number of strength-training exercises and b be the number of aerobic exercises per week respectively.

For the beginner plan:

15a + 20b = 90  eqn. (1)

For the advanced plan:

20a + 30b = 130 eqn. (2)

Solving the simultaneous equation by elimination method:

Multiply eqn. (1) by 3 and eqn. (2) by 2

45a + 60b = 270 eqn. (3)

40a + 60b = 260 eqn. (4)

Subtract eqn. (4) from eqn. (3)

5a = 10

a = 2

Substitute a = 2 in eqn (2)

b = 3

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Complete question:

A personal trainer designs exercise plans based on a combination of strength-training and aerobic exercise. A beginner plan has 15 minutes per session of strength training and 20 minutes per session of aerobic exercise for a total of 90 minutes of exercise in a week. An advanced plan has 20 minutes per session of strength training and 30 minutes of aerobic exercise for a total of 130 minutes of exercise in a week.

Which statement describes when the plans are based on the same number of aerobic exercise sessions?

Each plan utilizes a combination of 2 strength-training sessions and 2 aerobic exercise sessions per week.

Each plan utilizes a combination of 2 strength-training sessions and 3 aerobic exercise sessions per week.

Each plan utilizes a combination of 3 strength-training sessions and 2 aerobic exercise sessions per week.

Each plan utilizes a combination of 3 strength-training sessions and 3 aerobic exercise sessions per week.

Wendy went a total of 3 units from home to the library

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

Home = (3, 4)

Jessie = (3, 5)

Library = (5, 5)

The distance between home and when Wendy picks up Jessie is

Distance 1 = 5 - 4

Distance 1 = 1

The distance between the librayr and when Wendy picks up Jessie is

Distance 2 = 5 - 3

Distance 2 = 2

So, we have

Total = 1 + 2

Evaluate

Total = 3

Hence. the distance is 3 units

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a. The probability that the system will operate as shown is approximately 0.6141.

b. Probability ≈ 0.6141The probability remains the same as in the previous case, which is approximately 0.6141.

c. The probability that the system will operate with each component having a backup with a probability of 0.85 and a switch that is 90% reliable is approximately 0.6485.

a. To find the probability that the system will operate as shown, we multiply the probabilities of each component. Since the system is shown to have three components with a probability of 0.85 each, we can calculate:

Probability = 0.85 × 0.85 × 0.85

Probability ≈ 0.6141

The probability that the system will operate as shown is approximately 0.6141.

b. In this case, each system component has a backup with a probability of 0.85 and a switch that is 100% reliable. Since the backup has a probability of 0.85, and the switch is 100% reliable (probability = 1), we can calculate the probability as:

Probability = 0.85 × 0.85 × 0.85

Probability ≈ 0.6141The probability remains the same as in the previous case, which is approximately 0.6141.

c. In this scenario, each system component has a backup with a probability of 0.85, but the switch is 90% reliable (probability = 0.90). We can calculate the probability as:

Probability = 0.85 × 0.90 × 0.85

Probability ≈ 0.6485

The probability that the system will operate with each component having a backup with a probability of 0.85 and a switch that is 90% reliable is approximately 0.6485.

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Answer:

x=-58/15

Step-by-step explanation:

distribute first 10-2.5x+12=21-10x-28

Simplify(add the numbers) 22-2.5x=-7-10x

move the variable to the left side 22-2.5x+10x=-7

move the constant to the right side -2.5x+10x=-7-22

simplify like terms 7.5x=-29

divide by 7.5                       x=-58/15

alternate forms are x=-3 13/15                or  x=-3.86

The statement "This does not make sense because the mean and median should lie somewhere to the right of the mode if the distribution is left-skewed" is correct. The correct answer is B

In a left-skewed distribution, the mode is the highest point and it is located to the right of the median, which in turn is located to the right of the mean.

This is because the mean is influenced by extreme values on the left tail, which pull it to the left, whereas the median is unaffected by extreme values and is only determined by the middle value(s) in the data set.

Thus, if the mean, median, and mode are all the same in a left-skewed distribution, this indicates that the data set is either symmetric or approximately symmetric.The correct answer is B

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Answer:

Step-by-step explanation:

It's not that clear on my screen

The statement "am ≡ cm (mod n) for all integers m ≥ 1" is false.

To prove this, we can use mathematical induction.  Base case: For m = 1, the statement becomes a1 ≡ c1 (mod n). This implies that a ≡ c (mod n), which may or may not be true depending on the values of a, c, and n. Therefore, the base case does not guarantee the truth of the statement.

Inductive step: Assume that am ≡ cm (mod n) for a particular value of m = k. Now, we need to show that the statement holds for m = k+1, i.e., ak+1 ≡ ck+1 (mod n).

However, we cannot make this assumption based on the inductive hypothesis because it does not hold for all possible values of a, c, and n. Therefore, we cannot establish the truth of the statement using mathematical induction. Hence, the statement "am ≡ cm (mod n) for all integers m ≥ 1" is false.

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Percentage change = 10%

We can use the formula:

Percent change = \(\frac{New-Old}{Old}\) x 100

Percent change = \(\frac{77-70}{70}\)x100

Percent change = \(\frac{7}{70}\) x 100

Percent change = 0.1 x 100

Percent change = 10%

Answer: 53.9

Step-by-step explanation:

Given that,

the two numbers are consecutive

The two numbers are

x and x + 1

Sum of the numbers = 129

x + (x + 1) = 129

x + x + 1 = 129

2x = 129 - 1

2x = 128

x = 128/2

x = 64

Therefore, the two numbers are x = 64 and x + 1 = 65

Answer: f(x)=-3x+2

Step-by-step explanation:

To find the minimum score of the top 2.5% of students, we need to calculate the z-score corresponding to the 97.5th percentile and then convert it back to the original SAT score scale.

First, let's calculate the z-score using the formula:

z = (x - μ) / σ

where x is the SAT score, μ is the mean (1175), and σ is the standard deviation (120).

To find the z-score corresponding to the 97.5th percentile, we need to find the z-score value that leaves 2.5% in the tail of the distribution (to the right).

Using a standard normal distribution table or a statistical calculator, we find that the z-score corresponding to the 97.5th percentile is approximately 1.96.

Now we can solve for x (the SAT score) in the z-score formula:

1.96 = (x - 1175) / 120

Multiply both sides by 120:

1.96 * 120 = x - 1175

235.2 = x - 1175

Add 1175 to both sides:

235.2 + 1175 = x

1410.2 = x

Therefore, the minimum score of the top 2.5% of students is approximately 1410.

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Answer:

x = 1

Step-by-step explanation:

Both equations can be set equal to each other since they are both equal to y:

\(x-10=-4x-5\\5x-10=-5\\5x=5\\x=1\)

equate both equations !

x - 10 = -4x - 5

5x - 10 = -5

5x = 5

x = 1

therefore x = 1

Rashid spent a total of 1 hour and 30 minutes on homework for these three subjects.

If Rashid spent 30 minutes on each piece of homework for three subjects, we can calculate the total time he spent by multiplying the time spent per subject (30 minutes) by the number of subjects (3).

30 minutes * 3 = 90 minutes.

To convert this into hours and minutes, we divide 90 minutes by 60 since there are 60 minutes in an hour.

90 minutes ÷ 60 = 1 hour and 30 minutes.

Therefore, Rashid spent a total of 1 hour and 30 minutes on homework for these three subjects.

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By solving this system of equations, we can find the values of a, b, c, and d.

To find the values of the arbitrary constants in the given equations, we will use the given points and conditions to set up a system of equations and solve for the unknowns.

Make the curve y = ax³ + bx² + cx + d pass through (0,0), (-1,-1), and have a critical point at (3,7).

Given points:

(0,0): Substituting x=0 and y=0 into the equation, we get: 0 = a(0)³ + b(0)² + c(0) + d, which simplifies to d = 0.

(-1,-1): Substituting x=-1 and y=-1 into the equation, we get: -1 = a(-1)³ + b(-1)² + c(-1) + 0, which simplifies to -a - b - c = -1.

Critical point (3,7): Taking the derivative of the equation with respect to x, we get: y' = 3ax² + 2bx + c. Substituting x=3 and y=7 into the derivative, we get: 7' = 3a(3)² + 2b(3) + c, which simplifies to 27a + 6b + c = 7.

Now we have a system of equations:

d = 0

-a - b - c = -1

27a + 6b + c = 7

By solving this system of equations, we can find the values of a, b, and c.

Find a, b, c, and d so that the curve y = ax³ + bx² + cx + d passes through points (0,12) and (-1,6) and has an inflection point at (2,-6).

Given points:

(0,12): Substituting x=0 and y=12 into the equation, we get: 12 = a(0)³ + b(0)² + c(0) + d, which simplifies to d = 12.

(-1,6): Substituting x=-1 and y=6 into the equation, we get: 6 = a(-1)³ + b(-1)² + c(-1) + 12, which simplifies to -a + b - c + 12 = 6.

Inflection point (2,-6): Taking the second derivative of the equation with respect to x, we get: y'' = 6ax + 2b. Substituting x=2 and y=-6 into the second derivative, we get: -6'' = 6a(2) + 2b, which simplifies to 12a + 2b = -6.

Now we have a system of equations:

d = 12

-a + b - c + 12 = 6

12a + 2b = -6

By solving this system of equations, we can find the values of a, b, c, and d.

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In the marketing class of 50 students who evaluated their instructor using the given scale, the descriptive summary of the survey results indicated that the majority of students rated the instructor as either average or poor, with 45% in each category.

This suggests that the instructor's performance might not have been highly effective or satisfactory for most of the students. Meanwhile, a small percentage of students found the instructor to be good (8%) and even fewer rated them as superior (2%). No students rated the instructor as inferior.

Based on these findings, the conclusion can be drawn that the instructor's performance was perceived as predominantly average or poor by the class, indicating potential areas for improvement in their teaching approach or methods to better cater to students' needs and expectations.

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Answer:

4

Step-by-step explanation:

There are 2 outcomes for the first flip and 2 outcomes for the second flip

Multiply

2*2 = 4

28 is the number of tickets of the second prize

A word problem is a mathematical exercise where significant background information on the problem is presented in ordinary language rather than in mathematical notation

Given that:

The first time wins = 60 tickets

The second time, she won a bonus, which was 4 times the number of tickets of the second prize

Altogether she won 200 tickets

Let N represent the number of tickets of the second prize

This can be written as:

60 + N + (4×N) = 200

60 + N + 4N = 200

60 + 5N = 200

5N = 200 -60

5N = 140

N = 140/5

N = 28

Therefore, the number of tickets of the second prize is 28

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a. A 25-year mortgage at a rate of 10 %.

(i) Monthly payment: $970.41

(ii) Total amount of interest paid: $161,122.85

b) 15-year mortgage:

(i) Monthly payment: $1,133.42

(ii) Total amount of interest paid: $72,195.84

a) 25-year mortgage at a rate of 10%:

Let's calculate the monthly payment and the total amount of interest paid for this mortgage.

(i) Monthly Payment:

To calculate the monthly payment, we can use the formula for the monthly payment of a mortgage:

M = P * r * (1 + r)^n / ((1 + r)^n - 1),

where:

M is the monthly payment,

P is the principal amount (the price of the house minus the down payment),

r is the monthly interest rate (10% divided by 12 months),

n is the total number of monthly payments (25 years multiplied by 12 months).

P = $140,000 - 20% * $140,000

= $140,000 - $28,000

= $112,000

r = 10% / 12

= 0.10 / 12

= 0.00833333

n = 25 years * 12 months

= 300

Plugging these values into the formula, we get:

M = $112,000 * 0.00833333 * (1 + 0.00833333)^300 / ((1 + 0.00833333)^300 - 1)

Using a calculator, we find that the monthly payment is approximately $970.41.

(ii) Total Amount of Interest Paid:

To calculate the total amount of interest paid, we can subtract the principal amount from the total amount paid over the loan term.

Total amount paid = M * n

Total amount of interest paid = Total amount paid - P

Total amount of interest paid = ($970.41 * 300) - $112,000

Using a calculator, we find that the total amount of interest paid is approximately $161,122.85.

b) 15-year mortgage at a rate of 10%:

Let's calculate the monthly payment and the total amount of interest paid for this mortgage.

(i) Monthly Payment:

Using the same formula as above with adjusted values for n:

P = $112,000 (same as before)

r = 10% / 12

= 0.10 / 12

= 0.00833333

n = 15 years * 12 months

= 180

Plugging these values into the formula, we get:

M = $112,000 * 0.00833333 * (1 + 0.00833333)^180 / ((1 + 0.00833333)^180 - 1)

Using a calculator, we find that the monthly payment is approximately $1,133.42.

(ii) Total Amount of Interest Paid:

Using the same approach as before:

Total amount paid = M * n

Total amount of interest paid = Total amount paid - P

Total amount of interest paid = ($1,133.42 * 180) - $112,000

Using a calculator, we find that the total amount of interest paid is approximately $72,195.84.

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Over the interval (4,5), the average rate of change of g is greater than the average rate of change of f.

As the value of x increases, the average rates of change of f and g remain constant and increase, respectively.

When the value of x is equal to 7, the value of g(x) exceeds the value of f(x).

It can be further generalized that a quantity increasing exponentially will eventually exceed a quantity increasing linearly.

Over the interval (4,5), the average rate of change of g is greater than the average rate of change of f.

This means that between the values of 4 and 5 for x, the function g(x) has a steeper slope (rate of change) compared to f(x).

In other words, the values of g(x) increase at a faster rate than the values of f(x) over this interval.

For f(x), its average rate of change remains constant, meaning it doesn't change with increasing x.

However, for g(x), the average rate of change increases as x increases. This indicates that g(x) grows at an accelerating rate compared to f(x).

When the value of x is equal to 7, at this point, the value of g(x) is greater than the value of f(x), indicating that g(x) surpasses f(x) in terms of magnitude.

if two quantities are increasing over time, and one quantity follows an exponential growth pattern while the other follows a linear growth pattern, the exponential quantity will eventually surpass the linear quantity.

This is because exponential growth accelerates over time, while linear growth remains constant.

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Answer:

Five greater than a number,the result is multiplied by 18

The verbal expression for 18(p + 5) is eighteen times the quantity obtained by adding five to a number p.

The verbal expression for the algebraic expression 18(p + 5) can be described as "Eighteen times the quantity obtained by adding five to a value represented by 'p'." This expression represents a mathematical operation where a given value 'p' is increased by five, and then the result is multiplied by eighteen. This type of expression is commonly encountered in various real-world situations where a value needs to be adjusted and then scaled up by a certain factor. In this case, the result reflects the outcome of multiplying the adjusted value by eighteen.

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Answer:

Part a)  3x + x + 48 = 180

Part b) m<1 = 99

          m<2 = 81

Step-by-step explanation:

For part a) it is very important to note that all angles on a straight line equals to 180 degrees, so, we can make angle measure 1 and 2 equal to 180 degrees using the values given:

3x + x + 48 = 180

For part b, we have to solve the equation we made in part a to solve for x:

3x + x + 48 = 180

4x + 48 = 180

4x = 132

x = 33

Now we find the angle measure by putting the x value into each of the expressions given:

m<1 = 3x

m<1 = 3(33)

m<1 = 99

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

m<2 = (x + 48)

m<2 = (33 + 48)

m<2 = 81