Math - Others Questions

1 point Problem 8 The distance d of a point P to the line through points A and B is the length of the component of AP that is orthogonal to AB as indicated in the diagram So the distance from P 0 4 3 to the line through the points A 4 2 4 and B 3 5 1 is Brouiou Mu Angum

Calculate the following net price factors and net prices by using the complement method Round all answers to the nearest cent List Price Trade Discount Rate Net Price Factor Net Price 3 499 00 37 1 244 25 45 8

Entered AC BD h 9 Answer Preview Consider the graph G shown below a AC f BD At least one of the answers above is NOT correct b e Result d incorrect incorrect Determine whether each of the following is a perfect matching and whether it is a partial matching a h b g e f A Is a perfect matching A Is a partial matching a b b c c d d e e f f g g h h a a b c d e f B Is a perfect matchi B Is a partial matchin a c e f g h

In 2012 the Pew Research Foundation reported that 45 of US adults report that they live with one or more chronic conditions However this value was based on a sample so it may not be a perfect estimate for the population parameter of interest on its own The study was based on a sample of 3014 adults Below is a distribution of 1000 bootstrapped sample proportions from the Pew dataset Pew Research Center 2013a 0 425 0 430 0 435 0 440 0 445 0 450 0 455 0 460 0 465 0 470 0 475 0 480 a Using the distribution of 1000 bootstrapped proportions approximate a 92 confidence interval for the true proportion of US adults who live with one or more chronic conditions b Interpret the interval in the context of the problem With 92 confidence the true proportion of all US adults who live with one or more chronic nd conditions is between

The half life of the radioactive element unobtanium 59 is 10 seconds If 176 grams of unobtanium 59 are initially present how many grams are present after 10 seconds 20 seconds 30 seconds 40 The amount left after 10 seconds is The amount left after 20 seconds is The amount left after 30 seconds is The amount left after 40 seconds is The amount left after 50 seconds is Round to one decimal place grams grams grams grams grams CIB

Which expression results in a rational number 1 2 18 2 5 5 3 2 2 4 3 2 2 3

1 point The distance d of a point P to the line through points A and B is the length of the component of AP that is orthogonal to AB as indicated in the diagram So the distance from P 0 4 3 to the line through the points A 4 2 4 and B 3 5 1 is 612 19 M

V8 V7 5 G 07 H 1 8 V1 V6 V2 V5 V3 V4 3 Let S V V4 V8 Which of the following vertices are in N S A V1 B V2 C V3 D V4 E 05 F 06

An airplane needs to head due north but there is a wind blowing from the northeast at 40 km hr The plane flies at an airspeed of 550 km hr To end up due north the pilot will need to fly the plane Select an answer of north Give your answer to the nearest tenth of a degree The resulting ground speed of the plane to the nearest kilometer per hour is km hr degrees

At least one of the answers above is NOT correct 1 point Determine whether each of the following statements is true or false 1 K4 4 is not planar n 2 K6 is not planar 3 Kg is not planar 4 K 3 3 is planar 5 K is planar

1 point Let V 4 00 For u v E V and a R define vector addition by uvuv 4 u v 20 and scalar multiplication by au u 4 4 It can be shown that V B O is a vector space over the scalar field R Find the following the sum 125 12 the scalar multiple 10 12 12 the additive inverse of 12 B12 0 the zero vector 0 4 the additive inverse of Br X

Assignment 8 Problem 22 1 point Let V R For 2 1 2 EV and a ER define vector addition by u 2 B v v2 0 1 U2 U 2 and scalar multiplication by a au a 1 auz 2a 2 It can be shown that V BB C is a vector space over the scalar field R Find the following the sum 8 7 1 3 10 12 the scalar multiple 0 8 7 1 2 the zero vector 0y 12 the additive inverse of x y B x y 2x 2y Note You can earn partial credit on this problem

At least one of the answers above is NOT correct 2 of the questions remain unanswered Let V R and let H be the subset of V of all points on the plane 72 6y 4z 42 Is H a subspace of the vector space V 1 Does H contain the zero vector of V H does not contain the zero vector of V H is a subspace of V 2 Is H closed under addition If it is enter CLOSED If it is not enter two vectors in H whose sum is not in H using a comma separated list and syntax such as 1 2 3 4 5 6 3 Is H closed under scalar multiplication If it is enter CLOSED If it is not enter a scalar in R and a vector in H whose product is not in H using a comma separated list and syntax such as 2 3 4 5 4 Is H a subspace of the vector space V You should be able to justify your answer by writing a complete coherent and detailed proof based on your answers to parts 1 3 H is a subspace of V Note In order to get credit for this problem all answers must be correct Preview My Answers Submit Answers

Assignment 8 Problem 21 1 point Let V R For u v V and a ER define vector addition by uv u v 2 and scalar multiplication by a u au 2a 2 It can be shown that V B C is a vector space over the scalar field R Find the following the sum 74 5 the scalar multiple 50 7 43 the zero vector 0 2 the additive inverse of Bz 2

Find the distance between the points 5 2 8 3 and 5 2 3 2 1 5 2 5 2 units unit s 8 3 3 2 SCLE

ASK YOUR TEACHER PRACTICE ANOTH Suppose that people s heights in centimeters are normally distributed with a mean of 170 and a standard deviation of 5 We find the heights of 80 people You may need to use the standard nor distribution table a Calculate the z score corresponding to the heights Round your answers to two decimal places x 170 Z x 175 Z Determine the probability that a person has a height between 170 and 175 cm Round your answer to four decimal places How many of the 80 people would you expect to be between 170 and 175 cm tall Round your answer to the nearest whole number people b Calculate the z score corresponding to a height of 179 cm Round your answer to two decimal places X 179 Z Determine the probability that a person has a height greater than 179 cm Round your answer to four decimal places How many of the 80 people would you expect to be taller than 179 cm Round your answer to the nearest whole number people

1 Find AC A 7 yd B 92 4 Find ZA 15 yd 75 28 B 28 yd 2 Find BC 15 5 Find Z B B 32 mi 28 A B 59 10 yd 21 mi 3 Find AC C B 83 6 Find Z C 38 25 m 98 19 ft 11 ft A B

Use the formula in this example to determine the sample size n The estimated prevalence is 19 and the desired confidence level is 93 with a margin of error of 5 Identify the following values Determine the sample size Round your answer to the nearest integer n

1 point Consider the relation R whose digraph is given below 4 2 5 8 3 6 7 List the equivalence classes of R Separate your answers using commas In sets containing more than one element write them from smallest to largest without spaces

Draw a scatter diagram and find r for the data shown in the table Round r to three decimal places O No Solution 45 14 13 12 11 10 9 5 X 1 2 3 4 y 1 5 7 12 Clear All Delete Fill Graph Layers Point 1 Point 2 Point 3 Point 4

Use the formula in this example to determine the sample size n The estimated prevalence is 25 and the desired confidence level is 95 with a margin of error of 2 This is the same as in the example except the margin of error has been changed Round your answer to the nearest integer n

Find the regression line for the data points X 1 2 3 4 y 1 6 9 12

A new computer circuit was tested and the times in nanoseconds required to carry out different subroutines were recorded Difficulty Time 1 3 11 3 4 5 6 6 6 13 8 14 19 20 18 9 Find the regression line for the data Assume x is the difficulty level and y is the time Round your values to four decimal places y

ind the regression line for the data points Round your values to two decimal places y X 85 90 100 102 105 y 75 40 35 28 25

What percent of the total population is found between the mean and the z score given Use the standard normal distribution table and enter your answer to two decimal places Z 1 9 16 54 X

V8 07 A V V1 B U2 C V3 D V4 E 05 F 06 V1 G 07 H V8 V6 2 Let S v2 v6 Which of the following vertices are in N S V2 V5 V3 VA

A normal distribution has a mean of 85 9 and a standard deviation of 4 83 Find the data value corresponding to the value of z given Enter your answer to four decimal places z 2 75

What percent of the total population is found between the mean and the z score given Use the standard normal distribution table and enter your answer to two decimal places Z 0 50

What percent of the total population is found between the mean and the z score given Use the standard normal distribution table and enter your answer to two decimal places Z 1 9 0

The answer above is NOT correct 1 point Consider the relations R R2 R3 R4 R5 on A 1 2 3 4 defined by R 1 2 2 1 R 2 2 2 3 2 4 3 2 3 3 3 4 R2 R3 1 1 1 2 2 1 2 2 3 3 4 4 R 1 2 2 3 3 4 R5 1 1 2 2 3 3 4 4 Determine which of the following statements are true Select all that apply A R is not symmetric B R is reflexive C R is symmetric D R4 is transitive E R is reflexive F R5 is transitive G R5 is not reflexive H R3 is reflexive I R is transitive J R3 is not transitive K R4 is symmetric None of the above

ABCD A ABCD V1 Consider the graph G shown below W1 A At least one of the answers above is NOT correct V2 W2 V3 incorrect W3 correct Determine whether each of the following is a perfect matching and whether it is a partial matching v w v W V3 W3 A Is a perfect matching A Is a partial matching v3 W v2 v w3 W C Is a perfect matching C Is a partial matching V V2 V3 W W2 W3 B Is a perfect matching B Is a partial matching v W v W v3 W3 v w D Is a perfect matching D Is a partial matching

Let A B and C be subsets of a universe U Which of the following is a minset generated by A B and C Select all that apply A ANBOcc DB ANC DC A n AB nCo OD A0 B C DE U AUBUC OE ANB UC

6 21 Capital asset pricing model MFI Inc has a beta of 0 86 If the expected mar ket return is 11 5 percent and the risk free rate is 3 percent what is the appropriate required return of MFI using the CAPM

6 4 Expected rate of return and risk Summerville Inc is considering an investme one of two common stocks Given the information that follows which investme better based on the risk as measured by the standard deviation and return of e COMMON STOCK A COMMON STOCK B PROBABILITY 0 30 0 40 0 30 RETURN 11 15 19 PROBABILITY 0 20 0 30 0 30 0 20 RETURN 5 6 14 22

a A n B nC Region b An B n Cc Region c A n BnC Region d An BnC Region A 1 4 2 5 7 6 3 B

6 23 Portfolio beta and security market line You own a portfolio consisting of the x stocks below MyLab STOCK OR SECURITY 1 2 4 5 PERCENTAGE OF PORTFOLIO 20 30 15 25 10 C BETA 1 00 0 85 1 20 0 60 1 60 The risk free rate is 3 percent Also the expected return on the market portfolio is 11 percent EXPECTED RETURN 12 8 12 7 16 a Calculate the expected return of your portfolio Hint The expected return of a portfolio equals the weighted average of the individual stocks expected returns where the weights are the percentage invested in each stock 1 10

mputing holding period returns a From the price data here compute the holding period returns for Jazman a Solomon for periods 2 through 4 PERIOD JAZMAN 1 9 2 11 3 10 4 13 b How would you interpret the meaning of a holding period return SOLOMON 27 28 32 29

a Copy and complete the table of values for the relation y x x 2 for 3 x 3 X y 3 2 1 0 1 2 4 2 3 4 b Using scales of 2cm to 1 unit on the x axis and 2cm to 2 units on the y axis draw a graph of the relation y x x 2 c From the graph find the i minimum value of y ii roots of the equation x x 2 0 iii gradient of the curve at x 0 5

a Copy and complete the table of values for the relation y x x 2 for 3 x 3 X y 3 2 1 4 0 1 2 2 3 4 b Using scales of 2cm to 1 unit on the x axis and 2cm to 2 units on the y axis draw a graph of the relation y x x 2 c From the graph find the i minimum value of y ii roots of the equation x x 2 0 iii gradient of the curve at x 0 5

Vertical and horizontal pressure gradients in hydrostatic equilibrium At height z 800m the pressure is 950hPa The top heights and the densities at the centers of the layers at horizontal positions x 1km and x 2km are given in table 1 Assume the density to be constant within each layer 2 1 Calculate the pressure difference between top and bottom of each layer and calculate the resulting pressure at layer boundaries of each layer

Identify the sentence where the verb tense is consistent O Martin picked up the phone and dials the number Martin pick up the phone and dialed the number O Martin picked up the phone and dialed the number O Martin picks up the phone and dialed the number

In Problems 1 8 evaluate the given iterated integral 3 x xy 2 24xy dz dy dx

Let R x C x and P x be respectively the revenue cost and profit in dollars from the production and sale of x items If R x 8x and C x 0 005x 4 9x 40 find each of the following a P x b R 150 C 150 and P 150 c R x C x and P x d R 150 C 150 and P 150 a P x Use integers or decimals for any numbers in the expression b R 150 Type an integer or a decimal C 150 Type an integer or a decimal P 150 Type an integer or a decimal c R x Type an integer or a decimal C x Use integers or decimals for any numbers in the expression P x Use integers or decimals for any numbers in the expression d R 150 per item Type an integer or a decimal C 150 per item Type an integer or a decimal P 150 per item Type an integer or a decimal

A bakery works out a demand function for its chocolate chip cookies and finds it to be q D x 743 15x where q is the quantity of cookies sold when the price per cookie in cents is x Use this information to answer parts a through f a Find the elasticity E x b At what price is the elasticity of demand equal to 1 Round to the nearest cent as needed c At what prices is the elasticity of demand elastic OA Prices are elastic at all values OB Prices cannot be elastic in this case OC Less than 25 O D Greater than 25 d At what prices is the elasticity of demand inelastic OA Prices are inelastic at all values OB Less than 25 OC Prices cannot be inelastic in this case OD Greater than 25 e At what price is the revenue a maximum X Round to the nearest cent as needed Use a comma to separate answers as needed

3 Cook rint rences Beginning inventory Merchandise Finished goods Cost of merchandise purchased Cost of goods manufactured Ending inventory Merchandise Finished goods Music World Retail Merchandising Manufacturing Business Business 205 000 310 000 180 000 Cost of goods sold Wave Board Manufacturing 320 000 597 000 Required Prepare the cost of goods sold section of the income statement for each company 230 000 Complete this question by entering your answers in the tabs below Prepare the cost of goods sold section of the income statement for the Merchandising Business Cost of Goods Sold for the Year

t2 of 2 ts eBook Print eferences Required information Required 1 Required 2 Prepare the current year income statement Cost of goods sold Goods available for sale Cost of goods sold LEONE COMPANY Income Statement For Year Ended December 31 0 0 0 0

12 Part 2 of 2 3 points eBook Print References Required information Direct materials Raw materials available for use Direct materials used Factory overhead LEONE COMPANY Schedule of Cost of Goods Manufactured For Year Ended December 31 Total factory overhead 0 0

In this problem assume that the distribution of differences is approximately normal Note For degrees of freedom d f not in the Student s t table use the closest d f that is smaller In some situations this choice of d f may increase the P value by a small amoun therefore produce a slightly more conservative answer Suppose that at five weather stations on Trail Ridge Road in Rocky Mountain National Park the peak wind gusts in miles per hour for January and April are recorded below Wilderness District 2 3 15 124 137 64 78 January April 113 88 98 61 USE SALT Does this information indicate that the peak wind gusts are higher in January than in April Use a 0 01 Solve the problem using the critical region method of testing Let d January April Round your answers to three decimal places test statistic 2 617 critical value 2 943 X 1 137 114 x Interpret your conclusion in the context of the application O Reject the null hypothesis there is sufficient evidence to claim average peak wind gusts are higher in January O Fail to reject the null hypothesis there is sufficient evidence to claim average peak wind gusts are higher in January Fail to reject the null hypothesis there is insufficient evidence to claim average peak wind gusts are higher in January O Reject the null hypothesis there is insufficient evidence to claim average peak wind gusts are higher in January Compare your conclusion with the conclusion obtained by using the P value method Are they the same We reject the null hypothesis using the P value method but fail to reject using the critical region method The conclusions obtained by using both methods are the same O We reject the null hypothesis using the critical region method but fail to reject using the P value method

in 13 of 13 Macmillan Learning The braconid wasp preys on the azuki bean weevil This predator prey relationship causes the wasp population to fluctuate The wasp population after t generations is given by w 3500 2000 sin After how many generations is the wasp population at a minimum for the first time Give your answer to the nearest whole number t What is that minimum number Give an exact answer minimum wasp population When is the first time the wasp population reaches 5400 Give your answer to the nearest whole number generation s generation s

9 of 13 Find all solutions of cos x 1 on the interval 2T 0 2 Give your answer in the form of a comma separated list if needed Express numbers in exact form Use symb fractions where needed X