# Mary Ann

Popular questions and responses by Mary Ann
1. ## math

Please on this question I know I divide but do I do them one at a time or all together. Hamster is 8%, fish 12% and dogs are 23%. I added them together and got 0.43%. The question is- The citizens of a certain community were asked to choose their favorite

2. ## Algebra

What is the expectation for the \$1 bets on a U.S. roulette wheel? See the figure. (Round your answer to the nearest cent.) Three-number bet Thank you

3. ## History Help

Why do many historians regard the printing press as the most important invention of the past millennium?

4. ## music help

what does neumes and color lines show?

5. ## math

he pie chart below shows how the total annual income for a certain family is spent. If the amount budgeted for Housing and Insurance combined is 42,000, what is the total family income? there is saving 8%, food 19%, clothing 18%, auto 12%, entertainment

6. ## physics

A 1.5 kg box moves back and forth on a horizontal frictionless surface between two springs.? The box is initially compressed against the stronger spring, K=32 N/cm, 4.0 cm and released from rest. The smaller box is K=16 N/cm. A) By how much will the box

7. ## Algebra/I think I did this wrong

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 50 people. (You may need to use the standard normal distribution table. Round your answers to the nearest

8. ## World History

1.Greek and Roman legacies to the modern world include contributions to modern law and government. Briefly describe how modern law and government have been influenced by classical Greece and Rome. Include at least two examples from the Greeks and two

9. ## algebra.having problems

Draw a stem-and-leaf plot for the data set. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Data set A: The annual wages of employees at a small accounting firm are given in thousands of dollars. 50 15 18

10. ## math

Thank you for you help. The pie chart below shows how the total annual income for a certain family is spent. If the total annual income is 110,000 , what amount is budgeted for Savings, Housing, and Auto combined? Saving is 18%, housing is 21% and auto is

11. ## algebra

Choose a natural number between 1 and 100, inclusive. What is the probability that the number chosen is not a multiple of 5? (Enter the probability as a fraction.) Thank you it is appreciated.

12. ## math/Do not understand

At a local college,153 of the male students are smokers and 357 are non-smokers. Of the female students,145 are smokers and are 355 non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the

13. ## Algebra/can you ck my anwers

A class obtained the following scores on a test. Test Score Frequency 90 2 80 5 70 10 60 3 50 3 40 2 Find the mean, the median, the mode, and the range for the class. (If an answer does not exist, enter DNE.) 2(90)+5(80)+10(70)+3(60)+3(50)+4(40)than divide

14. ## Statistics/I am confused

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 115 and a variance of 25. The material is considered defective if the breaking strength is less than 105 pounds. What is the probability that a single,

15. ## Algebra

What is the probability of getting a license plate that has a repeated letter or digit if you live in a state in which license plates have one numeral followed by three letters followed by three numerals? (Round your answer to one decimal place.)

16. ## algebra

Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of \$42,500 with factory and dealer rebates of \$5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the

17. ## world history

which connected the millions of people living in the Inca empire? A. money B. writing C. language D. loyalty **** i think the answer is D but; I'm not sure.

An oil-drilling company knows that it costs \$25,000 to sink a test well. If oil is hit, the income for the drilling company will be \$395,000. If only natural gas is hit, the income will be \$125,000. If nothing is hit, there will be no income. If the

19. ## Vietnam war HELP

Why did the war in Vietnam result in such widespread opposition?

20. ## history

1. “An individual who breaks a law that conscience tells him is unjust, and who willingly accepts the penalty of imprisonment in order to arouse the conscience of the community over its injustice, is in reality expressing the highest respect for the

21. ## algebra

Tarot cards are used for telling fortunes, and in a reading, the arrangement of the cards is as important as the cards themselves. How many different readings are possible if four cards are selected from a set of seven Tarot cards? Thank you

22. ## math

find the 20th term of the sequence 25, 23, 21, 19, 17

23. ## math

graphing a line through a given point with a given slope. graph a line with slope -1 passing through the point(1, -3) Thank you just do not understand sorry.

24. ## algebra

Find the requested probability. P(A) if P(A) = 0.6. the first A has a line over it. than the P (A) line over it Thank you for you time it is appreciated on this end believe me

Three fair coins are tossed. What is the probability that at least one is a head? (Enter the probability as a fraction.) I came up with 7/8 Thank you

26. ## algebra/ Can see I am right

A state's license plates consist of three letters followed by three numerals, and 241 letter arrangements are not allowed. How many plates can the state issue? I did it this way 26x26x26x10x10x10= 17,576,000 Have I done this correctly or am I missing a

27. ## World History

Describe the importance of the Silk Road in the exchange of goods and ideas during this time. Your description should include examples of some of the goods and ideas that moved along the Silk Road and the direction in which they traveled.

28. ## chemistry

what gas law did you use to answer my questions earlier?

29. ## algebrahave i done this right

Evaluate the given expressions (to two decimal places). 2(90)+5(80)+10(70)+3(60)+3(50)+4(40)= than divide by 25 mean =70.8 median =70 mode =70 range = 50

30. ## Statistics/ is this how I do it.

Find the range and the standard deviation (correct to two decimal places). 83,96,100,100,103 find the range and standard deviation Do I that 5 numbers add that divide by 5 for the range I am not sure how to do standard deviation. Thank you

31. ## Algebra

A club with 33 members is to select five officers president, vice president, sec, treasurer and historian. In how many way can the this be done. I am not sure if I ask this before, thank you

32. ## algebra

Suppose that the odds in favor are 12 to 1 that a man will be bald by the time he is 60. State this as a probability. (Enter the probability as a fraction.) P(a man is bald by 60) Thank you

33. ## ALGEBRA

CONTACT THE EXPRESSIONS.THAT IS USE THE PROPERTIES OF LOGARITHM TO WRITE EACH EXPRESSION AS A SINGLE LOGARITHM WITH A COEFFICIENT OF 1. In 3-2 in 9 + 18 in 3-2 in (9+6) in 3-2 (in 4 + in 8)

34. ## Algebra

A positive integer minus a positive integer is always positive. This statement is sometimes true. For example, 17 – 5 = 12, but 15 – 20 = –5. post five other statements about the addition and subtraction of positive and negative integers, and ask

35. ## Statistics

The records of a computer retail store show that out of the 100 customers who purchased a desktop computer last month, 69 also purchased a service plan that extends the warranty for an extra year. Out of the 25 customers who purchased a notebook computer

36. ## Statistics

If someone could help with this problem so I can understand how to perform the actions. In the past year, Carmen watched 51 movies that she thought were very good. She watched 60 movies over the whole year. Of the movies she watched, what percentage did

37. ## Algebra

Is the following set a function? {(3, 4), (1, 2), (4, 9), (6, 15)} Thank you

38. ## Algebra/can you help me

Write each expression in terms of common logarithms, and then give a calculator approximation (correct to four decimal places). log7^10= 1.183 How do you find the approximation log3^316 = 5.239 How do you find the approximation Thank you

39. ## Algebra/can you ck my work

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 145 and a variance of 4. The material is considered defective if the breaking strength is less than 140 pounds. What is the probability that a single,

40. ## algebra/can you help please

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 145 and a variance of 4. The material is considered defective if the breaking strength is less than 140 pounds. What is the probability that a single,

41. ## statisticsWere did i go wrong thank you

Find the range and the standard deviation (correct to two decimal places). 83, 96, 100, 100, 106=divided by 5=97 I did the (83-97)+(96-97)+(100-97)+(100+97)=106-97)= I know I add than divide by 5 and I can not come up with Standard deviation. Where am I

42. ## statistics

The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard deviation of 0.03 inch. What is the probability that the diameter will exceed 0.83 inch? (You may need to use the standard normal distribution table. Round

43. ## Algebra Last question for tonight

An oil-drilling company knows that it costs \$25,000 to sink a test well. If oil is hit, the income for the drilling company will be \$395,000. If only natural gas is hit, the income will be \$125,000. If nothing is hit, there will be no income. If the

44. ## Algebra/Probability

Suppose that you toss a coin and roll a die. What is the probability of obtaining tails or a six? (Enter the probability as a fraction.) I came up with 1/6 which does not sound right thank you for you time on this Holiday

45. ## Algebra /Happy Holiday Everyone

Evaluate the Expression This is combination nCr (9 6 3 ) (6 4 1 ) n! r!(n-r)! I have try everything and came up 1296 and that was wrong. Could someone please help when you have time. Thank You

46. ## Algebra

Decide whether you would use a permutation, a combination, or neither. Next, write the solution using permutation notation or combination notation, if possible, and, finally, answer the question. A club with 31 members is to select five officers

47. ## Evaluate the expression.Algebra

Evaluate the expression. (9/6) (6/4) (3/1) I think this are combination I try three different ways, now I am not sure how to do it.

48. ## algebra/I appreciate your help

Find the future value, using the future value formula. Round the answer to the nearest cent. \$625 @ 5.5% compounded quarterly for 3 years.

49. ## U.S history

What was the main constitutional issue regarding Bush's claims to executive privilege? A.Bush's interpretations of executive privilege posed a threat to the impeachment process. B. Bush's interpretations of executive privilege endangered the principle of

50. ## communism HELP

Why did communism in the Soviet Union collapse in the late 1980s?

51. ## science

Why do you think the presence of smoke contributed to cloud formation?

52. ## Algebra II, i don't get this??

help i don't get these two questions!! 21.What is the range of f(x) = |x + 2| + 3? Option A: y is less than -2 Option B: y is less than 3 Option C: y is greater than -2 Option D: y is greater than three 30.What are the coordinates of the vertex of the

53. ## Statistics

Daily output of Marathon’s Garyville, Lousiana, refinery is normally distributed with a mean of 232,000 barrels of crude oil per day with a standard deviation of 7,000 barrels. (a) What is the probability of producing at least 232,000 barrels? (b)

54. ## english

is an executive summary a persuasive message

55. ## Insurance form preparation

Which of the following documents would provide information on a patient's diagnosis? A. Confidential patient information record b. ledger sheet c.medical treatment record d. CPT-4 Tossed up on answer

56. ## physics

A 400g glider moving to the right at 2 m/s collides elastically with a 500g glider moving in the opposite direction at 3 m/s. find the velocity of each glider? please show work so i can understand it! thanks

57. ## math

Sophia's age is twice of her brother and the sum of their is 18. What is the age of sophia and her brother?

Hi Ms. Sue I was wondering if you could give me some advise in doing explain and unexplain variation and least-squares regression line. I know how to compute the numbers, but I am having a problem with: say there is 3.0270, 30.0463 and 33.1120. I sometimes

What is the value of the Y-intercept of the least-squares regression line from this data? Round you answer to at least two decimal places. I add all the y up's and came up with 2714.4. Then is says the least-squares regression line for these data has a

60. ## Statistics/Binomal

I really need help I do not understand how to start this problem. A machine that manufactures automobile parts produces defective parts 15% of the time. If 7 parts produced by this machine are randomly selected, what is the probability that at least 3 of

determine the value of C P(-c

At a local college,147 of the male students are smokers and 343 are non-smokers. Of the female students,180 are smokers and 420 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the

63. ## Math/need help

Hi I know how to find P(A and b) and P(AuB) My problem is finding say P(A)=0.60 and P(B with a line over the B)=0.40. what do I need to do. I get two right than 3 wrong. Can you please help. Thank you

64. ## Math

I am doing estimating Standard deviation of grouped data. I have done all the sum freg 60/ midpoint 2580/ x bar is 43 for all/ and total with x bar is 10260. Can you explain how to get the variance and sq root from these. I know that you have to

65. ## math

According to Chebyshev's theorem, at least a percentage of either,56%,75%,85%,89% of the measurements lie between 119.3 mmHg and 146.9 mmHg. I really hate to ask any question of you guys I know you are busy, but I am totally lost with this statistic stuff.

66. ## perecentiles

I am having a problem finding the 75 percentile. I did 75/100 x17 I come up with 12.75 do I round that up and do I bring it to 13. Thank you

67. ## math

Summation of indexed data, I added the numbers up and I get -27 find the summation 29x does this mean I multiply the -27 by 29 Thank you

68. ## MATH

writing an equation of a line given the y-intercept and another point. It say to write an equation of the line one point is on y0 and x is on -6. Thank you

69. ## Math

Hi Steve, Sorry I did not explain my self better than I did. See this is the second time taking this Statistic course,and I have no idea how to do anythings. The question is: Hi Steve, It is a graph where there is a line on point is on -3 and the other

70. ## Math

good evening, I was wondering if you could direct me in right direction to lean how to evaluate a line that is there with two numbers and I have to find out how to write it. Either by factions or whole numbers. Thank you for you time.

71. ## Math

Find the value of the following" 10!7! over 12!5! If your answer is not an integer, write it as an exact fraction. Thank you

72. ## criminal justice

could someone please let me know where I can find this type of question to read. discuss three key aspects of the school shootings that the court system has addressed so far. Thank you very much Mary Ann

73. ## Statistics

Good Afternoon, Hope everyone will have a nice weekend. I am sorry to bother you all, but I am failing statistic. Can someone give me an example of this and example of a regression hypothesis. Thank you

74. ## math

If someone can explain how to do this problem so I can learn and understand. you have a sample of 50 people. Based on the histogram, find the proportion of weight loss values in the sample that are less than 10 pounds. Write your answer as a decimal, and

75. ## math

summation of indexed data Could someone please help me I am very confused on this problem.Thank you I have added all the number up and get -31. than it says to find -31- it have the sum with 15 over i=I than after that behind the sum is xi. What do i do to

76. ## math

please can you explain this to me I don't understand! Find the value of the following 10! 11! over 7! 13! If your answer is not an integer, write it as an exact fraction. thank you so very much

77. ## math

Hi my question is find the value of the following. 6! 8! over 9! 5! If your answer is not an integer, write it as an exact fraction. Thank you so much. I have no idea how to do it.

78. ## statistics

my question is: So if the chance is 1 in 17,259,390 of winning, what is the expected value of the win? How would I do this problem. Hope you can help. Thank you

79. ## math

Hi and thank you for your help. Find the value of the following: 11!6! over 12!4! If your answer is not an integer, write it as an exact fraction. Thank you again

80. ## math

good evening, he pie chart below shows how the total annual income for a certain family is spent. If the total annual income is 140,000 , what amount is budgeted for Auto, Insurance, and Entertainment combined? Auto,12%, ins 10% and enter is 13%. I know

81. ## Math

Evaluate the following expression. Can you explain how to get the answer to this question please. [15 + 6 x(15-13)]divide by 9 Thank you for your time

82. ## statistics

The following is a list of 10 measurements: after adding and sub all 10 numbers I came up with a -29. Now it wants the sum 10/i,i than xi over 32. Do I x -29 and the 32 or do I divide. This is were I get very confused. I am sorry to ask again but I never

83. ## math

The following is a list of 11 measurements: -78, -1, 92, -24, 59, 21, 51, -2, 65, 37, 11 . Find 11 over sum,under sum i=l than Xi over 14 Round your answer to at least two decimal places. I get a sum of 231, now this is where I am confused. Do I divide or

84. ## math

select ten (10) states and calculate the mean and standard deviation for average insurance costs. Next, calculate the mean and standard deviation for average insurance costs for all 51 states. Compare and contrast the means and standard deviations for the

85. ## math

Good evening. I do not know how to solve this kind of problem. Could someone help me. Find both x-intercept and the y-intercept of the line given by the equation for 2.4x+2.9y+6.4=0 Thank you for your kindness.

86. ## math

can someone please how to do this problem. Find y-intercept y=3.9x-4.2 I am very confused even how to start it. Thank you

87. ## math

Hi could you see if I did this one right The pie chart below shows how the total annual income for a certain family is spent. If the amount budgeted for Housing and Entertainment combined is\$25,200 , what is the total family income? Housing is 22% and

88. ## Math

Could someone please show how this is done or explain how to do it. thank you The pie chart below shows how the annual budget for a certain company is divided by department. If the amount budgeted for Editorial and Engineering combined is , what is the

89. ## statistics

Can you explain how to do this problem The following is a list of 11 measurements: 72, 28, 56, -47, -36, -41, 21, -31, -56, 41, -54 . Suppose that these 11 measurements are respectively labeled x1, x2,...x11 . (Thus,72 is labeled x1 ,28 is labeled x2 and

90. ## Statistics

Can someone help me with this question. I am so very confused. Find the y-intercept of the line whose equation is y=0.7x +6.2. could the answer be 5

91. ## math

If someone could show me how to do this, I am very confused. thank you for your time. Find the y-intercept of the line whose equation is y = - 2.2x-7.7

92. ## Math

Find the y-intercept of the line whose equation is y=1.3x-0.4 Thank you Could you show me how to do this problem.

93. ## Math

find both the x - intercept and the y-intercept of the line given by the equation 1.8x+9.9y-6.3=0. Round the answer to 2 decimal places. Thank you again for the help

94. ## math

How can I solve this question, Write 83.9% as a decimal, and write 0.038 as a percentage. I just can not remember how to do this. Sorry and thank you for your help and time.

95. ## Statistics

Evaluate the following. 20 divide 5+8+2x4 Thank you

96. ## Statistics

[(15-8)x3-13]divide 2

97. ## Algebra/Steve

Find three ordered pairs that satisfy the equation (x,y)= (0, (x,y)= (1,1) (x,Y)= (2,3) not sure about the zero Thank you, If steve answer this question this will be the last one for 4 month, I have brain surgery on Monday. Thank you for all you help

98. ## algebra

if f(x) = x - 7 find the following f(13) =6 f(-6) =13 f(p) = not sure how to set this one up Thank you very much

99. ## Algebra direction how to do it

Graph the first-degree inequality in two unknowns. y > 4x -4 Thank you very much. I am not sure what a > is