Mathematics Questions and Answers June 09, 2020

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T8B Check for Understanding Name 1 4 The distribution of heights of young women aged 18 to 24 is approximately distributed with a mean of 64 5 and a standard deviation of 2 5 in 18 1 Sketch a Normal density curve for the distribution of young women s heights Label the points one two and three standard deviations from the mean 19 20 21 22 23 2 What

3 Convert 2 hours to minutes Enter your answer as an integer or a reduced fraction 4 3 2 hours 4 minutes

Which function has a range of y 3 x x 3 Ax x 3 Ax x 3 Ax x 3 O

Solve the following wong maximigre Subject to LP using m method 2 x 502 3x 42 b x 3x2x2 72 O

a e b Let A 10 e b Under what condition will these eigenvalues be real numbers

Let A. Under what condition will these eigenvalues be real numbers

Solve: 32-82 13. Express your answer in interval notation.The solution is indicate a union of intervals, and "oo" to express ?)(Express your answer in interval notation. Use U to

DE F G Carry out the multiplication on the left and right side DE First suppose that A is invertible and let A 1 B0 Then AA 1 B0 D C F G

The unit circle has a radius of and a center at

The unit circle has a radius of e and a center at

Write the augmented matrix for the system of linear equations Do not perform any row opera 9x y 2 x y 9 11 10

Prove that p(n) is true for all positive integers n

Algebra prove that p(n) is true for all positive integers n

The equation is Type an equation Simplify your answer

The equation is (Type an equation. Simplify your answer.)

If T P3 R M2x2 R is the linear mapping defined by Then a Rank T 0 b Rank T 1 c Rank T 2 c Rank T 3 a c dz b b c a b a c T a bx cx dx

The subspace P of R4 is spanned by the vectors 0 0 and P Let P be the orthogonal complement of P 5 0 0 2 Suppose that v a Your friend Ezra knows that the vector v can be uniquely expressed as v p p where pe P and pept E Find p and p and enter your answers in Maple syntax in the boxes below P is a vector in R4 a Note The vector b in Maple syntax

0 a Is the set S dependent or independent Show your working labelling your Gauss reduction operations clearly 4 Handin problem Let S 12 15 b Look at your Gauss reduction again If you want an independent subset of S consisting of 3 vectors which 3 vectors could you choose

1 point Find a basis of the subspace of R consisiting of all vectors of the form Basis X1 5x1 x2 8x 6x 9x1 7x2 You should be able to explain and justify your answer Enter a column vector such as 2 using the syntax 1 2 3 If there is more than vector in your basis enter a comma separated list such as 1 2 3 4 5

Austin is going to invest in an account paying an interest rate of 2.2% compounded daily. How much would Austin need to invest, to the nearest hundred dollars, for the value of the account to reach $27,000 in 6 years?

Given the one-to-one function f(x)=x + 4 find the following. Hint: You do not need to find the equation for f(x).a. f(-4)b. f (-60)

An equation is showny = (1/2)x + (3/4)Select which of the given points are contained in the graph of the equation.A) (0, 1/2)B) (3/4, 1/2)C) (3/4, 0)D) (1/2, 1)E) (0, 3/4)

3 2 1 2 D by elementary row operations Question 2 20 points a 13 Points Find the inverse of the matrix 2 3 A 1 2 2 1 1 1 1 0

Express the proposition as an English sentence and determine whether it is true or false, where p and q are the propositionsp: "9.9=81" q: "8.10

Question 5 12 5 points Simplify log 216 36 6 O O 3 4 Question 6 12 5 points Use the change of base formula to approximate the following with your calculator log3 75 3 930 0 254

BOARD GAME When Tarin and Sam play a certain board game the probability that Tarin will win a game is If they play 5 games find each probability 4 P Sam wins only once O 0 015 or 1 5 0 079or 7 9 0 396 or 39 6 O 0 79or 79

Determine the domain of each of the following. Show all work and write the solution in interval notationb. f(x)=log (6-2x)c. f(x)=log (3x)a. f(x)=4log, (3x-6)

8 What is the y intercept of the line with the equation y 4x 1 a 1 c 3 b 5 d 2

Marchetta Bakery uses fine sugar brown sugar confectioner s sugar and honey The purchase prices and delivery costs per unit for these ingredients are displayed in the table below Marchetta Bakery Supply Charges Fine Sugar 10 Confectioner s Sugar 55 71 Purchase Brown Sugar 41 Delivery 25 33 Source Bakers Weekly Issue 196 July 1 2022 Create matrix M

If k = -3, what is the value of k +(2k-10)?A )1B)-14C) -7D )-19

59variants408559take6 t est MULTIPLE CHOICE Question 5 if k 3, what is the value of k (2k B D 14 19

In 2005, 10.6 out of every 50 employees at a company were women. If there are 45,473 total company employees, estimate the number of women.

need help in QUESTION 6 5x2 For the function f(x) = x + 2 2x + 3, find the following: (a) relative extrema of the function using the first derivative test. (b) find the region of x-values for which the function is 1. Increasing 1i. Decreasing 111. concave upwards iV . Concave downwards (2+2+ 3+ 3 marks)

A rock thrown vertically upward on the moon with an initial velocity of 32 m/sec has a height at time t given by the equation h(t) = 32t - 0.8t2. What is the maximum height of the rock? Show your work using the equation editor or briefly describe the steps you used to get your final

A rock thrown vertically upward on the moon with an initial velocity of 32 m/sec has a height at time t given by the equation h(t) = 32t - 0.8t2. What is the maximum height of the rock? Show your work using the equation editor or briefly describe the steps you used to get your final

Determine which of the four level of measurement nominal, ordinal, interval, or ratio is most appropriate: (a) Survey responses of "good, better, best". (b) The zip code for college mailing address. (c) The room temperature. (d) The distance between two cities. (e) Size of regular T-Shirt.

The table below shows the weekly journeys of 100 Students in the College of Business. 140 - 159 160- 179 180 - 199 200 -219 220 -239 240 - 259 Miles Traveled 7 20 33 25 11 4 No of Students Compute: i. the mean ii. Standard deviation ili. the median iv. Semi interquartile range V. Coefficient of Variation

2. Calculate the mean, quartile deviation, variance and standard deviation for the following frequency distribution, and hence obtain the value of co-efficient of variation. Size (x) : 1 2 3 4 5 6 7 8 Frequency (f): 5 18 7 12 28 20 10 7

"For each observation, add up the attribute value of all its neighbors (including itself) and divide by a sum of all of the values in the dataset" best describes which statistic: Gi-Star Local Moran's Local Join Count

Calculate the term of the loan or investment: Principal Maturity Value Compounding Frequency Nominal Rate Term $2870 $3837.30 Monthly 10% ? years, ? months

There were 609 students enrolled in a freshman-level chemistry class. By the end of the semester, the number of students who passed was 6 times the number of students who failed. Find the number of students who passed and the number who failed. Number of students who passed Number of students who failed

"For each observation, add up the attribute value of all its neighbors (including itself) and divide by a sum of all of the values in the dataset" best describes which statistic: Gi-Star Local Moran's Local Join Count

Calculate the term of the loan or investment: Principal Maturity Value Compounding Frequency Nominal Rate Term $2870 $3837.30 Monthly 10% ? years, ? months

2. Calculate the mean, quartile deviation, variance and standard deviation for the following frequency distribution, and hence obtain the value of co-efficient of variation. Size (x) : 1 2 3 4 5 6 7 8 Frequency (f): 5 18 7 12 28 20 10 7

Write an equation for a quadratic with the given features X-intercepts (-1,0) and y-intercept (0,-8)

The table below shows the weekly journeys of 100 Students in the College of Business. 140 - 159 160- 179 180 - 199 200 -219 220 -239 240 - 259 Miles Traveled 7 20 33 25 11 4 No of Students Compute: i. the mean ii. Standard deviation ili. the median iv. Semi interquartile range V. Coefficient of Variation

Calculate the term of the loan or investment: Principal Maturity Value Compounding Frequency Nominal Rate Term $2870 $3837.30 Monthly 10% ? years, ? months

A clinic provides a program to help their clients lose weight and asks a consumer agency to investigate the effectiveness of the program. The agency takes a sample of 15 people, weighing each person in the sample before the program begins and 3 months later. Which hypothesis test methods would be appropriate for this data set. Select all that

A psychologist has designed a questionnaire to measure individuals' aggressiveness. Suppose that the scores on the questionnaire are normally distributed with a standard deviation of90. Suppose also that exactly15% of the scores exceed700. Find the mean of the distribution of scores. Carry your intermediate computations to at least four decimal

Write an equation for a quadratic with the given features X-intercepts (-1,0) and y-intercept (0,-8)

There were 609 students enrolled in a freshman-level chemistry class. By the end of the semester, the number of students who passed was 6 times the number of students who failed. Find the number of students who passed and the number who failed. Number of students who passed Number of students who failed

2. Calculate the mean, quartile deviation, variance and standard deviation for the following frequency distribution, and hence obtain the value of co-efficient of variation. Size (x) : 1 2 3 4 5 6 7 8 Frequency (f): 5 18 7 12 28 20 10 7

continues problem help 2 If f(x) is a continuous function and | f(x) dx =90, then f(2sinx)cosx dx equals 15. cannot be determined from the information given. equals 30. equals 60. o equals 90. equals 45

There were 609 students enrolled in a freshman-level chemistry class. By the end of the semester, the number of students who passed was 6 times the number of students who failed. Find the number of students who passed and the number who failed. Number of students who passed Number of students who failed

(1 point) If sin 0 - 3/8 and 8 is in quadrant II, then cos (8) tan(0) - (A ) 105 = sec(0) = csc (0) =

(1 point) If sin 0 - 3/8 and 8 is in quadrant II, then cos (8) tan(0) - (A ) 105 = sec(0) = csc (0) =

A psychologist has designed a questionnaire to measure individuals' aggressiveness. Suppose that the scores on the questionnaire are normally distributed with a standard deviation of90. Suppose also that exactly15% of the scores exceed700. Find the mean of the distribution of scores. Carry your intermediate computations to at least four decimal

A clinic provides a program to help their clients lose weight and asks a consumer agency to investigate the effectiveness of the program. The agency takes a sample of 15 people, weighing each person in the sample before the program begins and 3 months later. Which hypothesis test methods would be appropriate for this data set. Select all that

give examples and uses of double integral applications? for example to calculate mass, volume, center of mass and others give 3 examples, Please don't write it by hand because I want to save it for study and documents

continues problem help 2 If f(x) is a continuous function and | f(x) dx =90, then f(2sinx)cosx dx equals 15. cannot be determined from the information given. equals 30. equals 60. o equals 90. equals 45

A clinic provides a program to help their clients lose weight and asks a consumer agency to investigate the effectiveness of the program. The agency takes a sample of 15 people, weighing each person in the sample before the program begins and 3 months later. Which hypothesis test methods would be appropriate for this data set. Select all that

give examples and uses of double integral applications? for example to calculate mass, volume, center of mass and others give 3 examples, Please don't write it by hand because I want to save it for study and documents

If f (1) 4 and f (n) f ( n 1) 4 then find the value of f (4).

I am not login to my account. I am interested in this platform to help students . So I am an expert of calculus mathematics.but my account is not working to solve the problems. I am not a student,I am expart. So please help me right now Thanks

I am not login to my account. I am interested in this platform to help students . So I am an expert of calculus mathematics.but my account is not working to solve the problems. I am not a student,I am expart. So please help me right now Thanks

probability theory Let a random variable X have the probability density function f(x) = C . |x - 1) for 0

(1 point) If sin 0 - 3/8 and 8 is in quadrant II, then cos (8) tan(0) - (A ) 105 = sec(0) = csc (0) =

A curve is generated by the equations x=t^2 and y=sin(t), find the arc length over the interval t = [0,]

A curve is generated by the equations x=t^2 and y=sin(t), find the arc length over the interval t = [0,]

Write an equation for a quadratic with the given features X-intercepts (-1,0) and y-intercept (0,-8)

If f (1) 4 and f (n) f ( n 1) 4 then find the value of f (4).

df - 1 For the function y = f(x) = " + 4x + 4, x > - 2, find y = 7 dy

Paye & of 10 Previous Next A roll of 270 m of Chicken wire is used to enclose a rectangular vegetable garden Express the area A of the garden in terms of its length ( x ). A(x ) = Done

Imagine you make a survey in your classroom related with the height of the female students obtaining following results in cm (21 students): 155, 156, 158,165,165,166,167,170,170,170,170,172,172,174,177,177,178,178,179,205,210 - Graph a bar graph Number of students/Height ( Excel) - Graph a histogram with four ranges of height (Excel)

A third plane can be found that passes through the line of intersection of two existing planes. A) Two planes are given by the equations3x5y+2z8=0 and4x+2y+3z+11=0. Find the scalar equation of the plane that passes through the line of intersection of these two planes, and also passes through the point (2, -3, 4). B) Give the equations of two

If f (1) 4 and f (n) f ( n 1) 4 then find the value of f (4).

Find two unit vectors orthogonal to =2,2,5and =2,0,4. (first vector, first coordinate has to be positive) First vector= second vector=

df - 1 For the function y = f(x) = " + 4x + 4, x > - 2, find y = 7 dy

evaluate the expression

Evaluate the expression. dx

Imagine you make a survey in your classroom related with the height of the female students obtaining following results in cm (21 students): 155, 156, 158,165,165,166,167,170,170,170,170,172,172,174,177,177,178,178,179,205,210 - Graph a bar graph Number of students/Height ( Excel) - Graph a histogram with four ranges of height (Excel)

Paye & of 10 Previous Next A roll of 270 m of Chicken wire is used to enclose a rectangular vegetable garden Express the area A of the garden in terms of its length ( x ). A(x ) = Done

evaluate the expression

Evaluate the expression. dx

probability theory Let a random variable X have the probability density function f(x) = C . |x - 1) for 0

A test of the null hypothesis Ho: p = 0.25 gives a test statistic z = 1.6. (a) What is the p-value if the alternative is Ha: p > 0.25? (b) What is the p-value if the alternative is Ha: p < 0.25? (c) What is the p-value of the alternative is Ha: p 0.25

I am not login to my account. I am interested in this platform to help students . So I am an expert of calculus mathematics.but my account is not working to solve the problems. I am not a student,I am expart. So please help me right now Thanks

Find two unit vectors orthogonal to =2,2,5and =2,0,4. (first vector, first coordinate has to be positive) First vector= second vector=

A test of the null hypothesis Ho: p = 0.25 gives a test statistic z = 1.6. (a) What is the p-value if the alternative is Ha: p > 0.25? (b) What is the p-value if the alternative is Ha: p < 0.25? (c) What is the p-value of the alternative is Ha: p 0.25

please solve Given the following, find matrix X using the matrix inversion conniqu show all intermediate steps. 2 3 1X=0 -1

Paye & of 10 Previous Next A roll of 270 m of Chicken wire is used to enclose a rectangular vegetable garden Express the area A of the garden in terms of its length ( x ). A(x ) = Done

A test of the null hypothesis Ho: p = 0.25 gives a test statistic z = 1.6. (a) What is the p-value if the alternative is Ha: p > 0.25? (b) What is the p-value if the alternative is Ha: p < 0.25? (c) What is the p-value of the alternative is Ha: p 0.25

probability theory Let a random variable X have the probability density function f(x) = C . |x - 1) for 0

please solve Given the following, find matrix X using the matrix inversion conniqu show all intermediate steps. 2 3 1X=0 -1

Use Figure 1 to evaluate the trigonometric function. 13 Figure 1 Enter the exact

Use Figure 1 to evaluate the trigonometric fttnction. 13 Figure 1 Enter the exact answer. 13 c tan B

(9) Below is the graph of y = f (x). Sketch a rough graph of y = f' (x). You can do it either on the same set of axis or different axis

4 2 Another particle has a velocity function of U(t) = f: T\" dx. What is the acceleration of this particle at time t = 1

An airplane lands with a velocity of 61.0 m/s. At the instant of touchdown, the airplane decelerates 3.05 m/s^2 until it comes to a rest. How far does the plane taxi before coming to a rest?

Question 6 (5 points) 8 - 81 75 Simplify the expression by using complex conjugates to write quotients of complex numbers in standard 64 27 15 form. 56 23 16 56 23 23 SINS 16 23 IN5

cy Does there exist a positive number a such that the double integral over the rectangle defined by -2

Does there exist a positive number a such that the double integral over the rectangle defined by 2 x 2 and 0 y a of f, y) 2 Explain your answer. is equal to

Suppose that (an) is a sequence of nonnegative numbers such that limn an = 0. Prove that there is some subsequence (ank ) of (an) such that P k=1 ank converges. Hint: Use the fact that an 0 to show you can find a subsequence satisfying ank 2 k for all k.

Suppose that (an) is a sequence of nonnegative numbers such that limn an = 0. Prove that there is some subsequence (ank ) of (an) such that P k=1 ank converges. Hint: Use the fact that an 0 to show you can find a subsequence satisfying ank 2 k for all k.

The term "freshmen 15" refers to the claim that called students typically gain 15 pounds during the first year in college . Assume that the amount of weight that a male college students gain during the freshman year is normally distributed with a mean of 2.9 pounds and a standard deviation of 10.7 pounds. Find the probability that a randomly

Suppose you purchase for your firm 8 used cars from an auto leasing company that has 30 cars available. Unknown to you, 60% (that is, 18) of the 30 cars have falsified odometer readings. a. Use the hypergeometric distribution and calculate the probability that 6 of the 8 cars you purchased have falsified odometer readings. b. Now calculate the

In prediction, overfitting means that a model gives a better fit in the training data, but a worse fit in the test data. TRUE FALSE

Question 7

7. (a) Find the function g such that tg(t) dt