1. statistics/probability

    in testing a new drug. researchers found that 20% of all patients using it will have a mild side effect. a random sample of 14 patients using the drug is selected. find the probability that: a) exactly three will have mild side effects. b) at least four

    asked by mary- please check calculations. on October 23, 2010
  2. Physics - Unit Conversion

    I am trying to calculate heat transfer between two objects. The units are as follows: mass: grams specific heat: cal/gm degree celsius temperature: degree celcius My numbers aren't working out and I know how to do the problem. So, what's the deal with the

    asked by Brenda on December 4, 2012
  3. Algebra II

    1. Find the value of 5 + 8 x 2 divided by 4 - 11 2. Evaluate (a-y)^2 + 2y^3, if a =2 and y= -3 3. Evaluate -|a-3b|, if a=-2 and b = 6 4. The formula A= 180 (n-20 OVER N relates the measure A of an interior angle of a regular polygon to the number of sides.

    asked by PJ. on May 4, 2008
  4. Algebra 1

    suppose you can work a total of no more than 20 hours per week at your two jobs. Babysitting pays $5 per hour, and your cashier job pays $6 per hour. youneed to earn at least $90per week to cover your expenses. Write a system of inequalities that show s

    asked by molly on December 15, 2014
  5. Chemistry

    When iron metal reacts with oxygen, the reaction can form Fe2o3 (numbers are subscripts). Write a balanced chemical equation for this reaction and find the number of moles of oxygen that are needed to form 6 mol of Fe2o3. Show your work. I am really stuck

    asked by Leon on March 14, 2017
  6. statistics

    10.15 A psychologist theorized that people can hear better when the have just eaten a large meal. Six individuals were randomly assigned to eat either a large meal or a small meal. After eating the meal, their hearing was tested. The hearing ability scores

    asked by joe on May 30, 2011
  7. Literacy

    Please check my work. Thank you. 1. Which of the following is the most direct tool to find books owned by a library you are visiting? A. W i k i p e d i a B. Search engines like G o o g l e or Y a h o o C. Catalog D. Periodical database Answer #1 is B 2.

    asked by Jen on September 12, 2011
  8. math

    Tyler is thinking of a number that is divisible by 2 and 3. By which of the following numbers must Tyler's number also be divisible? 6? 8? 9? 12?

    asked by danielle on January 6, 2015
  9. algebra

    Write two numbers so that: -The first number is less than the second number, and -the absolute value of the first number is greater than the absolute value of the second number.

    asked by astrid on April 21, 2008
  10. Math

    The larger number of 2 numbers is 3 more than twice the smaller. The difference of the larger in the smaller number is 8

    asked by Anonymous on September 11, 2017
  11. 12

    look at this series 940 940 931 931 922 922 ...what numbers should come next?

    asked by Anonymous on September 23, 2016
  12. math

    Which of these numbers is irrational? check mark sign 3 0.25 1/5 check mark sign 9 I think it is the first one

    asked by Lost on September 18, 2015
  13. math

    average of 6 numbers is 19.A seventh number is added and the new average is 20.What is the seventh number?

    asked by wan on November 10, 2012
  14. math

    the arithmetic mean of a set of nine numbers is 5. when one more number is added to the set, the new mean is 5.5. What number was added?

    asked by rayr on December 9, 2008
  15. Algebra

    What is the best measure of central tendency for the data? What answer do you get using this measure? (if applicable) Donald, Lester, Tool, Lee, Lester, Donald, Lester, Lee, Lester I need help finding the answer. I don't understand how to do this because

    asked by Peach on June 5, 2015
  16. Chemistry

    IGNORE MY FIRST POST. I CORRECTED THIS ONE Write IUPAC name of the following alkanes: 1. (CH3)3 -C-CH2-CH2-CH3 all the numbers are subscripts. So there are 3 CH3's, C,CH2,CH2, and CH3 This is what my teacher has in my homework. The parenthesis really throw

    asked by Holly on January 26, 2010
  17. Math

    Crafts. Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ratio of whole numbers.

    asked by Anonymous on November 7, 2009
  18. math

    Crafts. Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ratio of whole numbers.

    asked by Anonymous on November 7, 2009
  19. MATH 156

    Write the numbers in order of increasing size. "can anyone please help me I think the answer is A am I correct? 14) 2.09, 2.9, 2.099, 2.999 A)2.999, 2.9, 2.099, 2.09 B)2.09, 2.9, 2.099, 2.999 C)2.09, 2.099, 2.9, 2.999 D)2.099, 2.09, 2.999, 2.9

    asked by NENAS on July 7, 2009
  20. maths-complex numbers

    by using the substitution w = z^3, find all the solutions to z^6 - 8z^3 +25 = 0 in complex numbers, and describe them in polar form, using @(theta) to denote the angle satisfying tan@ = 3/4 ( note simply leave @ as it is, don't calculate it). i got up to

    asked by Anonymous on March 12, 2007
  21. Capital Budgeting

    A company has revenues of 100 per unit sold. Current sales are 7500 units. Labor rates are 15 per hour. It takes 1.2 hours of labor to make each buggy. Material costs are 13.50 per unit. Figures are expected to remain the same permanently if the company

    asked by Ash on April 24, 2007
  22. Physics

    A clock has a second hand which rubs against the inside of the glass cover. If the frictional force between the glass cover and the tip of the hand is 0.0020 N and the length of the hand is 8 cm, what minimum torque must be supplied to the hand by the

    asked by Anonymous on November 9, 2016
  23. Geometry

    1. The sides of a triangle have lenghts x, x+4, and 20. Specify those values of x for which the triangle is acute with the longest side 20. 2. use the information to decide if triangle ABC is acute, right, or obtuse. AC=13, BC= sq. rt. 34, CD=3 >>i know

    asked by Anna-Marie on March 3, 2008
  24. math

    List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or younger. Find the prime factorizations of your age and the other two persons’ ages. Show your work listed

    asked by Anonymous on June 27, 2011
  25. Chemistry

    A blood serum sample containing Na+ gave an emission signal of 4.27 mV. A small volume of concentrated standard Na+ was then added to increase the Na+ concentration by 0.102 M, without significantly diluting the sample. This "spiked" serum sample gave a

    asked by Ken on December 12, 2011
  26. Physics

    One of the fastest recorded pitches in major-league baseball, thrown by Billy Wagner in 2003, was clocked at 101.0 mi/h . If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate, 60.5

    asked by Elisa on June 1, 2008
  27. LA

    There's good news and bad news about grizzly bears in the American West. The good news? Their numbers have been increasing in recent years. In 1975, grizzlies made the threatened-species list under the federal Endangered Species Act. The bad news? Some

    asked by Filmore on May 3, 2016
  28. math

    An open box is to be made from a flat square piece of material 20 inches in length and width by cutting equal squares of length x from the corners and folding up the sides. (a) Write the volume V of the box as a function of x. Leave it as a product of

    asked by jp on January 28, 2015
  29. math

    . The ones digit is 0. . The hundreds and tens digits are consecutive numbers. . The digits in the thousands period have a sum of 15, with the hundred thousands digit being the greatest of the threes digits and the ten thousands digit being the least. .

    asked by sofia on December 10, 2012
  30. math

    Barbara delivered newspapers to each house on her side of the street. The house numbers on her side of the street begin with the number 705 and each increase by 6. The last house number was the largest possible number not over 799. How many papers did

    asked by ladoo on September 18, 2009
  31. Chemistry

    When determining the formula for aacompound, it is important to know valence numbers of each element. Suppose that element A has a valence number of 3 and element B has a valence number 2. If the two elements combine, then when writing the formula for the

    asked by Mickeyv on July 8, 2008
  32. History Check Please!

    Please check! Thanks! 1. How did the development of universities in medieval Europe strengthen the Church and unify society? a. Universities grew up around cathedrals, and courses of study helped educate clergy.*** b. Universities started cathedrals, which

    asked by Olivia N J on October 25, 2016
  33. math

    The average of 5 numbers is 28. What would the 6th number have to be to bring the average up to 30? Anne’s average in math is 92. She wants to raise her average to 93 so she will make an A. she is taking a test on Friday. What score will she have to make

    asked by katherine on March 14, 2011
  34. math

    Write an algebraic expression that requires each of the following properties of real numbers to simplify, in the order given: the Distributive Property, the Associative Property of Addition, the Commutative Property of Addition, and the Distributive

    asked by ray on September 17, 2013
  35. Science

    What conclusion can be drawn about the relationship between the arrangement of elements on the periodic table and the patterns observed in their priorities? A. Properties of elements are related to atomic numbers. B. Properties of elements are related to

    asked by blue on October 17, 2014
  36. Algebra

    What is the property of real numbers? I think it is D. -4(x+4)=-4x-16 Associative Property of Addition Commutative Property of Addition Associative Property of Multiplication Distribution Property

    asked by Joe on January 10, 2019
  37. math

    usethe rational zero theorem to find all real zeros of the polynomisl function.Use the zeros to factor f over the real numbers. f(x)=x^4+2x^33-7x^2-8x+12 what are the real zeros?> use the real zeros to factor f f(x)=

    asked by anonymous on January 10, 2013
  38. math

    U is the set of positive integers less than or equal to 30. A is the set of natural numbers that are multiples of 5 in U. B is the subset of all of the even integers in U. a) Find n(A U B) b) Find n(A intersect B) c) Find n(A U B' ) d Find n(B intersect

    asked by Lucas on January 24, 2014
  39. math

    U is the set of positive integers less than or equal to 30. A is the set of natural numbers that are multiples of 5 in U. B is the subset of all of the even integers in U. a) Find n(A U B) b) Find n(A intersect B) c) Find n(A U B' ) d Find n(B intersect

    asked by Lucas on January 25, 2014
  40. math

    2 Years before,average age of 8 numbers of family was 20yr.if present average of family even on inclusion of 1 child,remains same.present age of child is?

    asked by JK on May 31, 2017
  41. math

    The distance to the nearest 100,000 km from the earth to the moon is given as 400,000 km. The average speed to the Nearest 500km/h is 3500km/h. Calculate the least and greatest time it takes the rocket to reach the moon I figured out the formula speed =

    asked by Tay on March 31, 2015
  42. Mathematics

    The distance to the nearest 100,000 km from the earth to the moon is given as 400,000 km. The average speed to the Nearest 500km/h is 3500km/h. Calculate the least and greatest time it takes the rocket to reach the moon  I figured out the formula speed =

    asked by Fay on March 31, 2015
  43. calc

    Verify that the function satisfies the three hypotheses of Rolle's Theorem on the given interval. Then find all numbers c that satisfy the conclusion of Rolle's Theorem. f(x)= x sqrt(x+21) , [-21,0] If there is more than one solution separate your answers

    asked by Jossy on April 12, 2007
  44. Math

    The recycling Club collected newspapers to recycle. The number of pounds of newspapers they collected rounded to the nearest tenth, is 195.3 pounds. What are the three possible numbers that could be the actual number of pounds of newspapers they collected?

    asked by Tonya on September 6, 2016
  45. Math

    Which number is irrational? 3/17 √25 0.6.....( the dots mean it go on forever) √33*** Which numbers are rational? Select all that apply. 3.14**** √50 2.3**** √144 Which of the following is a possible measure of the area of a square rug whose

    asked by Me on March 14, 2018
  46. English paragraph

    Considering the fact that I am a survivor of a relatively traumatic car accident, I am exceedingly cautious when it comes to driving and am advocate for doing anything to improve the well being of our community on the road. A significant problem relating

    asked by fdgjfdkgjfdkg on November 30, 2010
  47. econ

    Suppose a firm produces output using the technology Q=K1/3 L2/3 Find a. The long run cost function b. The short run cost function if capital is stuck at 10 units. c. The profit maximizing level of output as a function of the price of the good, wages,

    asked by jon on October 17, 2007
  48. economics

    Suppose a firm produces output using the technology Q=K1/3 L2/3 Find a. The long run cost function b. The short run cost function if capital is stuck at 10 units. c. The profit maximizing level of output as a function of the price of the good, wages,

    asked by jon on October 15, 2007
  49. microeconomics

    Suppose a firm produces output using the technology Q=K1/3 L2/3 Find a. The long run cost function b. The short run cost function if capital is stuck at 10 units. c. The profit maximizing level of output as a function of the price of the good, wages,

    asked by janet on October 18, 2007
  50. statistics

    A random sample of 36 statistics students were asked to add a column of numbers. The amount of time required to compute the sum was recorded for each student. The sample mean time was 54 seconds with a sample standard deviation of 18 seconds. 1. Construct

    asked by Maggi on March 22, 2012
  51. Review Story

    Can you please review this summary of the New Kingdom of Egypt I did for Geography? Its just suppose to be a basic summary. I mainly struggle with capitalization and I never know what should and shouldn't be capitalized. Also, is there anyway I could make

    asked by Bryce on September 4, 2012
  52. Making a vertical graph

    I had to measure students in my class. I measured their hieghts in inchs but converted the numbers to centimeters and meters. Now i have to construct a vertical bar graph showing height on the X axis and number of people on the Y axis. I have a blank

    asked by amy on June 20, 2010
  53. vertical bar graoh

    I had to measure students in my class. I measured their hieghts in inchs but converted the numbers to centimeters and meters. Now i have to construct a vertical bar graph showing height on the X axis and number of people on the Y axis. I have a blank

    asked by amy on June 20, 2010
  54. Biology

    1. Are the third-order heterotrophs consumed by gungal decomposers? My guess:Yes? 2. Which of the following fixes atmospheric N2 (nitrogen gas)? A. photosynthesis B. symbiotic bacterianon the roots of legumes C. uv light D. decay organisms E. autotrophs My

    asked by Anonymous on September 13, 2009
  55. Advanced Algebra

    Mr. Whipple wants to blend two teas, regular and all-spice, whose wholesale cost is $0.90/lb and $1.20/lb respectively. He wil sell the mixture at $1.65/lb and wishes to make a 50% profit over wholesale cost. What should the ratio of regular to all-spice

    asked by Rebecca on August 23, 2006
  56. University Appeal Letter........HELP PLZ..

    I applied my first choice collegefor 2007 Fall admission. But they gave me summer admission finally, which I don't want to get. So I decide to write an appeal letter to the admission office asking for fall admission. The reason why I want them to

    asked by crzyadmi on April 12, 2007
  57. decimals

    a number has four digits. the digit in the hundredth place is greater than the digit in the hundreths place of 4.361. the digit in the thousandths place is greater than the digit in the tenths place of 2.85. what are the possible four-digit numbers between

    asked by jenny on May 28, 2014
  58. Math

    a square + b square = 80 ft (c Square) Through trial and error I can tell you that 6 squared (36) and 12 squared (44)are what you're solving for, but I just used trial and error to figure it out. 12 square is 144, not 44 a and b can be a combination of

    asked by Jimmy on January 2, 2007
  59. Math

    An Ice cream shop offers the following toppings: chocolate chips strawberry sprinkles caramel hot fudge whipped cream gummy bears If a sundae must have exactly four topping how many different sundaes can you make? 15 24 This one 12 18 Eric has two

    asked by Loomin on May 13, 2018
  60. Mathematical methods

    Following completion of your weekly readings, complete the exercises in the “Projects” section on page 397 of Mathematics in Our World. You should be concise in your reasoning. For Project #1, work only equations (a) and (c), but complete all 6 steps

    asked by Debbie on December 13, 2011
  61. Science

    A biologist made population counts of four different species of animals in an ecosystem. What can you infer from these numbers about possible predator-prey relationships between the species? Species A 155 Species B 17 Species C 2,467 Species D 19 ·

    asked by Steve on December 27, 2013
  62. Math

    6. The box-and-whisker plot below shows the numbers of text messages received in one day by students in he seventh and eighth grades at Lincoln Middle School. a) Describe the overlap of the two sets of data. b) Find the IQR of each set. c) Find the

    asked by ghost on April 19, 2017
  63. algebra

    Which of the following are examples of inferential statistics? Check all that apply. A.Finding the average (mean) of a set of numbers B.Testing every lightbulb produced by a company to confirm that each one works C.Testing random samples of lightbulbs

    asked by daryl on April 17, 2012
  64. Math

    The box-and-whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grades at Lincoln Middle School. a) Describe the overlap of the two sets of data. b) Find the IQR of each set. c) Find the

    asked by zzinnya on March 14, 2019
  65. Math HURRY !!!!!!!!

    Please Help me Explain how ratios can be used to compare two numbers I searched the web and I didn't understand it I think this might help me but could someone help me put it in a sentence The 1st number in a ratio tells the amount thtat shows up for every

    asked by HelpMe Please!!!! on January 23, 2007
  66. Math: Mean, Median, Mode, Range & Finding the devi

    What is deviation? And what is the definition of frequency distribution & how would I solve a problem in 8th grade math with this problem...My child is asking about this problem she has in an 8th grade book. Given the following numbers

    asked by Aayla on August 21, 2015
  67. math

    a box filled with identically shaped balls contains 5 balls with the number 1 on them, 8 balls with the numbers 10 on them, 15 balls with the number 12, and 2 balls with the number 20 on them. If the balls cannot be seen from outside the box, and if one

    asked by tg on July 31, 2013
  68. Math

    phyllis wants to fence in a rectangular garden with maximum area. she has 22 feet of fence. all the lengths of the sides of her garden must be whole numbers of feet. what is the best choice available to phyllis for the side lengths of her garden? Why?

    asked by Shohanur on May 9, 2015
  69. Pre Calculus

    Assume that x, y and a are positive numbers. Use the properties of logarithms to write the expression loga x ^6y ^7 in terms of the logarithms of x and y. a. 42loga^x+y b. 42loga^x+7loga^y c. 6loga^ x + 42loga^ y d. 6loga^x+7loga^y e. 6loga^x+6loga^y

    asked by Jessica Maths on July 6, 2016
  70. Math Quick Help Please

    Which of the following types of information is not suited for display on a double bar graph? populations of boys and girls at three different schools number of records versus compact discs sold each week during a one ­month period at The Music Den the

    asked by SmartyPants on March 17, 2015
  71. Math plz help!!!!

    Which of the following types of information is not suited for display on a double bar graph? populations of boys and girls at three different schools number of records versus compact discs sold each week during a one ­month period at The Music Den the

    asked by Queen/Halle on April 13, 2016
  72. math question

    Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ratio of whole numbers.

    asked by Ann on July 19, 2008
  73. Maths I NEED AN ANSWER ! THE 6 IS ALL I KNOW!!!

    Angel is thinking of a number. All its digit are even numbers. The sum of its digit is 18. The digit 6 stands for sixty. The smallest of the three digits is in the tenths place. The greatest of the three digit is in the ones place. What number is Angel

    asked by Donna on August 8, 2015
  74. Algebra 1- Math

    The sum of a smaller number and twice a larger number is 67. If the smaller number is increased by 5, the sum will equal the larger number. Find the numbers. A rectangles width is four more than twice its length. Its perimeter is 62. Find the dimension of

    asked by Tony on February 6, 2013
  75. lcm

    find the least common mutlipe of 420 196 Break down each number into prime number factors 196 = 2*2*7*7 420 = 70*2*3 = 2*2*3*5*7 The least common multiple is the product of all prime factors that occur in both numbers 2*2*3*5*7*7 = 2940

    asked by tayloir on April 22, 2007
  76. Math

    Marc took 3 hours (h) to mow a lawn while Angelina took 150 minutes (min) to mow the same lawn a week earlier. Write the ratio of Marc’s time to Angelina’s time as a ratio of whole numbers

    asked by Ms. Teri on March 26, 2008
  77. accounting

    I am looking for the answer to this assignment. I am not an accounting major and have no clue. Please help Assignment Name: Unit 4 Individual Project Deliverable Length: 2-3 paragraphs Details: Les Fleurs, a boutique in Paris, France, had the following

    asked by Terill on May 21, 2010
  78. statistics

    Question 1 A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. The students believe the mean is not 8 hours. To find an estimate of the true mean, they select a random sample of 15 students

    asked by need help on April 6, 2011
  79. Precalculus

    "Sketch the ellipse. Find the coordinates of its vertices and foci. 34. x^2 + 25y^2 - 6x - 100y + 84 = 0 (Hint: Complete the squares in x and y. Begin by writing the equation in this form: (x^2 - 6x + ___) + 25(y^2 - 4y + ___) = -84.)" ==> I used the hint

    asked by Emily on November 23, 2009
  80. stats 1040

    you play a game in which you win $4 if you correctly predict the numbers of spots on a fair 6-sided die and you lose $1 if you don't correctly predict the number of spots. you plan to play 100 times. how do you set up a box model to represent your net

    asked by rich on December 5, 2017
  81. MAths

    What is the sum of all numbers that occur an odd number of times in rows 0 through 11 of Pascal's triangle? Details and assumptions The 0th row of the Pascal triangle is the vertex, which is 1. You only sum the number once, regardless of the number of

    asked by OIan on April 23, 2013
  82. Alg 1

    You have 60 megabytes of space left on your portaable media player. You can choose to download song files that use 3.5 megabytes or video files that use 8 megabytes. You want to download at least 12 files. What is a graph showing the numbers of songs and

    asked by Emma on January 30, 2012
  83. algerbra

    7(3x+4)=8(2x+5)+13 how would I start a equation like this would it be 21x+28=16x+40+13 ? Yes, that is the way to start. Now collect the x's on one side. so it would be 21x-21x=28= 28=-5+40+13 28+13=41 x=41 7(3x+4)=8(2x+5)+13 21x+28=16x+40+13 To get all the

    asked by patti on May 16, 2007
  84. calculus--please help!!

    I have two questions that I don't understand and need help with. 1. information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zerosof f. degree 4, zeros i;9+i 2. form a polynomial f(x) with real coefficients

    asked by Paul on December 27, 2012
  85. math

    how to find the reciprocal?? you flip the reciprocal example (4 over 5 the reciprocal will be 5 over 4. If it is a fraction, switch the numerator with the deniminator. Example: reciprocal of 2/7 = 7/2 = 3 1/2 If it is a mixed number, write it as a fraction

    asked by honey dip on November 23, 2006
  86. Math

    Simplify by taking roots of the numerator and the demoninator. Assume that all expressions under radicals represent positive numbers. The square root of 243x^6/y^20 to the fifth root. Here is what I have so far: the square root of 243x^6 to the fifth root

    asked by B.B. on May 21, 2010
  87. physics

    Workers who wash windows or paint the outside of buildings use an interesting contraption known as a painter's lift. This consists of a harness that the worker wears suspended by a rope. The rope runs through a pulley mounted on the roof of the building

    asked by keshav on June 4, 2013
  88. History

    Can someone please check my answers? :) 1. What was the greatest threat to a slave family’s stability? (1 point) the birth of a new baby an increase in cotton production *** a marriage in the slaveholder’s family the slaveholder’s acquisition of new

    asked by Maggie on January 21, 2014
  89. Factoring Trinomials

    Working on how to factor trinomials, and the method that works best for me is the criss cross method, so Ive sticked with it. But Ive been stuck on one question for the past few minutes, and don't know what I've been doing wrong. 4x^2+23x+15 2x and 2x

    asked by -Untamed- on October 31, 2011
  90. algebra

    from our text book "Bittenger, M. L. & Beecher, J. A. (2007). Introductory and intermediate algebra (3rd ed.). Boston: Pearson-Addison Wesley" can someone please help me with "Review examples 2, 3, and 4 in section 8.4 of the text. •How does the author

    asked by judyanne on January 13, 2011
  91. Research Methods

    A researcher wants to attain a random sample of young drivers who have received DUIs within the last year. Using the PREP system, he asks all first year students at WLU who have received a DUI to volunteer for the study. Thirty-five students actually admit

    asked by Jill on October 15, 2011
  92. Math (Trigenometry)

    Find two positve real numbers whose product is a maximum and whose sum of the first number and four times the second number is 120. This is as far as I've gotten in solving it. *first number is x. *second number is y. *xy=maximum, which is unknown.

    asked by Anonymous on February 8, 2011
  93. math

    suppose you bought some 32 cent stamps and some 20 cent stamps. you spent $3.92 for 16 stamps. how many of each stamp did you buy? x = number of 32 cent stamps y = number of 20 cent stamps ================== x+y = 16 0.32x + 0.20y = 3.92 solve for x and y.

    asked by betty on February 1, 2007
  94. Math

    Which of these numbers is classified as a rational number? A. Square root 17 B. Square root 23 C. Square root 9 D. Square root 2 Is the answer C? Thanks

    asked by happy on October 17, 2014
  95. advance algebra

    The sum of two numbers is 103, the larger number is 1 more than 5 times the smaller number. use x=smaller number y=larger number

    asked by A-D on January 19, 2011
  96. College Math Probability

    Let 1

    asked by Genie_math on October 7, 2012
  97. Statistics

    Let N= {1,2,3,...}, that is, N is the set of natural numbers. Find a proper subset X of N such that there is not a one-to-one correspondence between X and N. Find a proper subset Y of N such that there is a one-to-one correspondence between Y and N.

    asked by Kassie on January 29, 2010
  98. Math

    Let N= {1,2,3,...}, that is, N is the set of natural numbers. Find a proper subset X of N such that there is not a one-to-one correspondence between X and N. Find a proper subset Y of N such that there is a one-to-one correspondence between Y and N.

    asked by Kassie on February 1, 2010
  99. Math

    Let N= {1,2,3,...}, that is, N is the set of natural numbers. Find a proper subset X of N such that there is not a one-to-one correspondence between X and N. Find a proper subset Y of N such that there is a one-to-one correspondence between Y and N.

    asked by Kassie on February 1, 2010
  100. Calculus Bonus

    There is this bonus that I need so bad for my grade. I have tried several ways to answer this question and have tried several equations. Please Help Bouquets are priced on the basis of the numbers and types of flowers used. What is the price of the fourth

    asked by Matt on October 25, 2007