1. statistics

    A professional basketball player has embarked on a program to study his ability to shoot foul shots. On each day in which a game is not scheduled, he intends to shoot 100 foul shots. He maintains records over a period of 40 days of practice, with the
  2. math help, correction

    Anna has 12 bills in her wallet, some $5 and some $10. The total value of the bills is $100. HOw many of each bill odes Anna have? How do i solve these type of problems my quess was this but i don't know if i'm correct. 5(x) + 10(y) = 100 5(0) + 10y = 100
  3. Statistics Help Please

    The following data were collected on non-conformances for a period of 10 days. Day Sample Size Non-conformances 1 100 12 2 100 14 3 100 10 4 100 18 5 100 22 6 100 14 7 100 15 8 100 13 9 100 14 10 100 16 On what day is the proportion of non-conformances
  4. Maths GRE

    What single discount is equivalent to two successive discounts of 15% and 10% 100 - {(100-first discount) X (100- second discount)/100} = 100 - (100-15)X(100-10)/100 = 100 - 85 X 90/100 = 100 - 76.5 = 23.5
  5. mathematics (percentages)

    math problem: pedro wants to calculate his gpa. he has the lab grades:90/100,98/100,90/100,94/100,90/100,90/100,95/100,98/100. Labs are worth 20%. He has the test grades: 9/10,6/10,10/10,10/10,5/10,7/10,7/10,7/10,10/10,10/10,8/10,10/10. Homework is worth
  6. English

    I have 100 dollars. I have 100 pounds. I have 100 pesos. I have 100 euros. I have 100 yen. I have 100 won. I have 100 yuan. (Are all correct? Don't we need to capitalize the first letter in each money name? What about the plural forms? Are all correct? Do
  7. Statistics

    The table I have is: Color of Candy Frequency Proportion (as a fraction and decimal) Percentage Red 13 13/100 or .13 13% Orange 25 25/100 or .25 25% Yellow 8 8/100 or .08 8% Brown 8 8/100 or .08 8% Blue 27 27/100 or .27 27% Green 19 19/100 or .19 19%
  8. math

    Name the property that justifies each step. [(2 * 100) + (3 * 10)]+ [(1 * 100) + (5 * 10)] = (2 * 100) + [(3 * 10)+ (1 * 100)] + (5 * 10)__________ property = (2 * 100) + [(1 * 100)+ (3 * 10)] + (5 * 10)___________ property = [(2 * 100) + (1 * 100)]+ [(3 *
  9. math help please!!!

    In this question how do you know when to add or subtract?? Simplify 100^12/100^8 A.100^12/8 B.100^96 C.100^4 D.100^20 Is the answer C or D?? Thank you
  10. math

    what is 10% of 20% of 30% pf 100? 100 * .30 = 30 30 * .20 = 6 6 * .10 = .6 I hope that's what your looking for! Are these three separate questions? 10% = 0.10 x 100 = ?? 20% = 0.20 x 100 = ?? 30% = 0.30 x 100 = ?? Remember of means times. Or is it just one
  11. Polynomials and properties of exponenets

    In the expression -7x-3x^2+5 what is the coefficient of x A.7 B.3 C.-3 D.-7 Suppose you earned 6t+2 dollars on monday and 9t - 6 dollars on tuesday what were your total earnings simplify your answer. A.15t-4 B.15t+8 C.-3t-4 D.-3t+8 100^12/100^8 A.100 ^12/8
  12. Algebra

    An object which is dropped from 100 feet above ground falls according to the formula s = -16t^2 + 100, where s is the distance from ground level at time t. Which equation is equivalent to this formula? S-100 = t^2 ------- -16 S-100 = t^2 ------ 16 s - 100
  13. Chemistry

    100 g piece of granite and a 100 g piece of lead are placed in an oven that is at 100°C. The initial temperature of the pieces are 25°C. After a couple of minutes, neither one is at 100°C, but which one is warmer? Which one will reach 100°C first? How
  14. math

    In this question do I add, subtract, or multiply the exponents? 100^12 ------ 100^8 A.100^96 B.100^4 C.100^20 Thank you
  15. Math

    A physician ordered 1 L of D-10-1/2 NS to infuse over 10 hours. How many grams of Dextrose would the patient receive per hour? I answer like this D10 = 10g/100 ml 1 L= 1000 mL 10 g/100 mL= x/ 1000 mL 100x= 1000x10 x= 10,000/100 x= 100 g over 10 hours
  16. Physics

    How many years would it take the planet to orbit the sun. How do you calculate. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Using Kepler's Law you find that the anser is 97^(1.5) years. You can estimate
  17. math

    round 25 to the nearest hundred Do you mean hundred as in 100? If so, 25 is closer to zero than it is to 100. So I would round numbers like 51 and 60 to 100 while 25 or 35 would be rounded to zero. If you mean hundred as in 100, then you would round 25 to
  18. math am i correct

    Add thirty-eight and nine tenths, five and fifty-eight hundredths, seven, and fifteen and eight tenths. 38 9/10 + 5 58/100 + 7 + 15 3890/100 + 558/100 + 7 + 15 4448/100 + 7 + 15 44 48/100 + 7 + 15 44 24/50 + 7 + 15 44 12/25 + 7 + 15 66 12/25
  19. Stats

    Y is a discrete random variable. The table below reports the values of Y and the corresponding frequency, n (the number of observations for each value). Based on this information, what is the expected value of Y? Y n 50 50 70 100 100 200 200 50 120 100 140
  20. Math check

    write the decimal as a fraction or a mixed number in simplest form 2.67 2.67/1× 100/100 = 267/100 267/100 = 2 67/100?
  21. 4th GRADE MATH

    WHAT IS 2/5 OF $50.00 AND WHAT IS 3/10 OF $50.00...IF YOU SHOW ME HOW TO GET ONE ANSWER, I CAN PROBABLY FIGURE OUT HE OTHER ONE. of means times. 2/5*50 = ?? That's (2/5)*50 = 100/5 = ?? Yes. Now, take 100 and divide it by 5. 100/5 = 100 divided by 5. What
  22. Chemistry

    Calculate the change in pH when 5.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
  23. math

    Fill in the blanks y = 10x + 100 x y -20 ? -10 ? 0 ? 10 ? I don't see any blanks to fill in. Are they telling you values of y and asking you co compute x? Or vice versa? The spacing changed the format I had. the values for x are -20, -10, 0, 10 now I need
  24. Chemistry

    Calculate the change in pH when 5.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq). (I have several problems like this can some one work this through for me as a base line)?
  25. derivative

    q=(100/p+1)^2 - 1 what is q'? use the chain rule: q' = 2(100/p+1)(-100/(p^2)) i got q' = 2(100/(p+1))(-100(p+1)^-2 =-2000/(p+1)^3
  26. Physics

    What is the heat in Joules required to raise the temperature of 25 grams of water from 0 °C to 100 °C? What is the heat in calories? Knowing that 4.18 J = 1 calorie and C= 4.18 J/g·°C M=25g C=4.18 J/g Tf=100 Ti=0 Q=25g x4.18j/g (100-0) Q=25x4.18x(100)
  27. 6th grade math

    Hi.. i'm a little confused on using proprtion equations to solve percent problem. can you check the following? Is there a different way to solve? equation: is(part)/of(whatnumber)= %/100 1. What is 94% of 43? x/43 = 94/100 100x = 43*94 (cross multiply)
  28. Math Help!

    Which proportion can be used to solve the following percent problem? What is 50% of 70? A. x/70=50/100 B. x/50=70/100 C. 50/70=x/100 D. 70/x=50/100 Is the answer B? Thank you
  29. Math "Need Help Asap"!

    7.)Which proportion can be used to solve the following percent problem? What is 50% of 70% A.)X/70 = 50/100 B.)X/50 = 70/100*** C.)50/70 = X/100 D.)70/X = 50/100 B?
  30. Physical Science

    I need help with this problem because it is confusing me. I tried to anwer it, though, so can someone please correct me if I am wrong? Suppose your mass is 45 kg and the mass of your little brother is 25 kg. You push your brother +100 N and an equal but
  31. Math Help

    1.Liam wants to buy a bicycle that costs $290.00. His parents say Liam must raise 40% of the money himself. How much money must Liam raise? A. $112.00 B. $40.00 C. $116.00*** D. $87.00 2.Solve the proportion using cross products 29 miles/58 hours=10 miles/
  32. Math (Confused)

    A certain economy's consumption function is given by the equation C(x)=0.75x+5 where C(x) is the personal consumption expenditure in billions of dollars and x is the disposable personal income in billions of dollars. Find C(0), C(50), and C(100). a.
  33. Math Homework: Check Answers

    1. Suppose you earned 8t - 3 dollars on Monday and 6t + 5 dollars on Tuesday. What were you total earnings? Simplify your answer. A) 2t + 2 B) 2t - 8 C) 14t + 2 D) 14t - 8 Answer: A 2. f^2 • f^4 A) (2f)^8 B) (2f)^6 C) f^8 D) f^6 Answer: D 3. 100^12/100^8
  34. Math

    Solve the equation: 4x^2 + 100 = 0 Here is my work: 4x^2 + 100 = 0 - 100 - 100 4x^2 =0 /4 /4 x = -5 or 5. Did I do this correctly?
  35. Statistics

    What price do farmers get for their watermelon crops? In the third week of July, a random sample of 51 farming regions gave a sample mean of = $7.08 per 100 pounds of watermelon. Assume that is known to be $1.80 per 100 pounds. Find a 99% confidence
  36. Pre Algebra

    5. (m^2-m-3)+(m-4) A. m^2+m-1 B. m^2+2m-7 C. m^2-7 D. m^2-1 6. (4x^2-2x-1)-(-3x^3+2) A. -3x^3+4x^2-2x+1 B. -3x^3+4x^2-2x-3 C. 3x^3+4x^2-2x+1 D. 3x^3+4x^2-2x-3 9. 100^12/100^8 A. 100^12/8 B. 100^96 C. 100^4*** D. 100^20 16. (1.1*10^-5)(3*10^-2) A. 4.1*10^-7
  37. math,correction

    simplify: sqrt ((7)/(100)) my work: 7 = 1sqrt (7) 100= 10 sqrt (1) (1)/(10) sqrt (7) my answer: (sqrt (7))/(10) Your answer is right but your statements: 7 = 1sqrt (7) 100= 10 sqrt (1) make no sense. how can sqrt(7)=7 ? you are saying 2.6457..=7 and
  38. Math

    Select the inequality that models the problem. The length of a rectangle is four times its width. If the area of the rectangle is less than 100 square meters, what is the greatest width of the rectangle? 4w + w < 100 4 + 4w < 100 4w < 100 4w • w
  39. math

    how to solve 1/100-2/100+3/100-4/100+....+99/100-1?? and this?? -1/100+2/100-3/100+4/100-....-99/100+1??
  40. Math 115

    A department store is offering a coupon for 21% off for any purchases over $100. How much would you spend for a $100 purchase? You would spend $100. You would spend $79 on a purchase of $100.01 You would spend $79.8 on a purchase of $101.00 You would spend
  41. microeconomics

    Consider a competitive exchange economy with two agents(1&2)and two goods(X&Y). Agent 1's endowment of (X,Y) is (100,100)& agent 2's endowment of (X,Y) is (50,0).An allocation of agent i is denoted by (xi,yi)where xi is his allocation of X & yi is his
  42. Chemistry

    Which of the following mixtures will result in the formation of a buffer solution if all solutions are 1.0 M before mixing? i) 100. mL of NH3(aq) and 100. mL of HCl(aq). ii) 100. mL of NH3(aq) and 50. mL of HCl(aq). iii) 100. mL of NH3(aq) and 50. mL
  43. Math

    Bhu had $48, but received $100 as a birthday gift and used the money to pay off her debt. She spent half of the money on a gift for herself. Which expression BEST represents the number of dollars Bhu has left? a.(-48+100)÷2 b.(48+100)÷2 c.-48+100÷2
  44. Pre-algebra

    Use a proportion to solve the problem. 34% of 83 x/100=34/83;40.96 x/100=34/83;2.822 x/83=34/100;28.22 x/83=34/100;56.44 I think it's either c or d because a and b arn't set up correctly according to how you're supposed to set up a porportion.
  45. Math percentages

    Is this right?? 10 + 7 = 17/100 = 41.2 % 100 + 92 = 192/100 = 1.92 % 15 + 13 = 28/100 = 1.25 % 28 + 22 = 50/100 = .5%
  46. math

    Write a function rule for finding the amount of daily pay, p in the following situation; A bus driver gets paid $100 each day plus $0.20 per kilometer, k. A.100=0.20 x k B. p=0.20x100 x k C. p= 0.20k+100 D. 0.20k=100+p Is the answer B??
  47. pre calculus

    Given: u <-1, 7> and v <4, -3> Find: (u • v)(u + v) ________________________________________ <25, 100> <-25, 100> <-75, -100> <75, -100>
  48. Math

    Top ten scores on a quiz in two classes are listed below Class A 100,100,100,90,95,85,92,98,92,88 class B 100,100,98,95,95,96,95,92,81,88 which statement is true concerning the data a. the mode is the same for both classes b. the range is the same for both
  49. Chemisrty

    Temp c KBr 20 65 40 80 60 90 80 100 100 110 At 100 C, 10.5 g KBr/10gH2O = 105 g/100 g (just multiply the top and the bottom by 10 to give you 100 g H2O) B) Since the solubility at 100C is actually 110, no, it isn't saturated (105 is less that 110). C) Yes,
  50. Maths GRE

    A salesman receives a commission of c% on a sale of D dollars. Find his commission. A)cD B)cD/100 C)100cD D)c/100D E)100c/D Any number expressed as a percentage is that number divided by 100 expressed as a decimal. Thus c% is c/100 Multiplying that by the
  51. math question corrected

    a farmer bought chickens, goats and sheep. the cost of a chicken is .50 goat is $3.50 and sheep is $10 He bought 100 animals and spent $100. how many of each animal did he buy please help! I need this for school tomorrow Since you have two equations and
  52. math please

    Add or subtract exponents? I don't know when to add or subtract it's all confusing. 100^12/100^8 A.100^12/100^8 B.100^96 C.100^4 D.100^20 If I added it would be D If I subtract it would be C Please help I don't know which one is right. Thank you
  53. Math

    Each day the wildlife commission releases 100 fish into the Durkee river in the following proportions: 55 brown trout and 45 rainbow trout. All of the fish swim through a watch station, one at a time, on the way upstream. Which of the following expressions
  54. mathematics (percentages)

    math problem: pedro wants to calculate his gpa. he has the lab grades:90/100,98/100,90/100,94/100,90/100,90/100,95/100,98/100. Labs are worth 20%. He has the test grades: 9/10,6/10,10/10,10/10,5/10,7/10,7/10,7/10,10/10,10/10,8/10,10/10. Homework is worth
  55. Chemistry

    Calculate the pH after 0.011 mol NaOH is added to 1.00 L of each of the four solutions. a) 0.100 M propanoic acid (HC3H5O2, Ka= 1.3 10-5) b) 0.100 M sodium propanoate (NaC3H5O2) c)pure H2O d) 0.100 M HC3H5O2 and 0.100 M NaC3H5O2
  56. Dr. Bob Chemistry question

    Ok this is what i got for the grams part now.... Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 = 20.51% %C2O4 = (51.64/98.18)*100 = 52.60% % Fe 3+ = (11.34/98.15) * 100= 11.55% % K + = (15.06/98.15) * 100 = 15.43 % 20.51 g
  57. Chemistry

    In a 100g sample of water, determine the amount of weight that is attributed to Hydrogen and to Oxygen. i found the mass ratio which is 2:16 & then reduced its 1:8. then i set up my equation. 1x+8x=100g 9x=100g x=11.11111111 or 100/9 then i have to
  58. Chemistry

    In a 100g sample of water, determine the amount of weight that is attributed to Hydrogen and to Oxygen. i found the mass ratio which is 2:16 & then reduced its 1:8. then i set up my equation. 1x+8x=100g 9x=100g x=11.11111111 or 100/9 then i have to
  59. Physics

    5. If a wave has a wavelength of 20m and a speed of 100 m/s, what is the period of the oscillation? v = wavelength / period 100 = 20 / period 100*20 = periodperiod = 20 / 100 2000 s = period OR period = 20 / 100 period = 0.2 s I don't know which one is
  60. Chemistry

    I just need this checked over. I am not sure about the last part D. Temp c KBr 20 65 40 80 60 90 80 100 100 110 At 100 C, 10.5 g KBr/10gH2O = 105 g/100 g (just multiply the top and the bottom by 10 to give you 100 g H2O) B) Since the solubility at 100C is
  61. Nice unanswered question by Maggie

    "100 bushels of corn are divided among 100 men, women, and children. Men receive 3 bushels each, women 2 bushels and children 1/2 bushel each. How can the bushels be distributed? is there more than one solution? if so, find the other solutions." let the
  62. Chemisty

    Ok this is what i got for the grams part now.... Total mass is 20.14 + 51.64 + 11.34 + 15.06 = 98.18 %H2O = (20.14/98.18)*100 = 20.51% %C2O4 = (51.64/98.18)*100 = 52.60% % Fe 3+ = (11.34/98.15) * 100= 11.55% % K + = (15.06/98.15) * 100 = 15.43 % 20.51 g
  63. chemistry

    In a Styrofoam cup calorimeter, what is the final temperature when 100. g of iron at 100. ° C is added to 100. g of water at 20. ° C?
  64. Chemistry

    How much volume in liters will 100.0 g of oxygen occupy at 100 degrees celcius and 100 atm pressure?
  65. prealgebra/ check answer please

    What single discount is equivalent to two successive discounts of 15% and 7%? x= 100 [1-(.85)(.93)] = 100 (1-.79) =100 (.21) =21%
  66. math

    explain how you can use place value to show 100 in different ways.asap consider scientific notation, eg 1.00*10^2 or 100.0 or 100.00
  67. Chemistry

    How much volume in liters will 100.0 grams of oxygen occupy at 100 degrees celcius and 100 atm pressure?
  68. Math riddle

    1. is 100 rounds to 100 and 99 rounds to 100. 2. 100 + 99 = 199 which est to be 200. 3. 100 - 99 = 1 Which est.to be 0 zero.
  69. chemistry

    How much volume in liters will 100.0 g of oxygen occupy at 100 0C and 100 atm pressure?
  70. pyhsical science

    How much heat is necessary to vaporize 100 g of water at 100 °C to form steam at 100 °C?
  71. math

    What is the largest power of 5 which divides the product of an the first 100 positive integers: 1 X 2 X 3 X ... X 98 X 99 X 100? A.5^2 B. 5^20 C. 5^24 D. 5^100
  72. physical science

    How much heat is necessary to vaporize 100 g of water at 100 °C to form steam at 100 °C?
  73. Chemistry

    How many mL of 0.100 M HCl must be added to 100.0 mL of 0.100 M F- to prepare a buffer solution that has a pH of 3.05? F- (aq) +H20 (l) <--------> HF (aq) +OH- (aq) Kb= 1.47*10^-11
  74. algebra (check my work)

    60% of what number is 24? a/w = p/100 24/w = 60/100 24 * 100 = 60* w 2400 / 60 = 60w / 60 w = 40 am i correct?
  75. physical science

    How much heat is necessary to vaporize 100 g of water at 100 °C to form steam at 100 °C?
  76. chemistry

    How much volume in liters will 100.0 g of oxygen occupy at 100 0C and 100 atm pressure?
  77. chemistry

    What is the ion in the resulting solution? 100.0 mL of 0.015 M K2CO3 and 100.0 mL of 0.0075 M BaBr2? 25 mL of 0.57 M Ni(NO3)2 and 100.0 mL of 0.150 M NaOH
  78. statistics

    Starting with a population that is normally distributed with a mean of 100 and a standard deviation of 12, answer the following questions (if possible). a. What is the probability of randomly drawing a single score between 100 and 106, p(100 < X <
  79. statistics

    It is known that the population mean for the Full Scale IQ of the WAIS is 100 with a standard deviation of 15. A researcher assesses a sample of 200 adults and find that they have a mean Full Scale IQ of 102. The point estimate of the mean for this group
  80. Chemistry

    Confused, conflicting texts when you are finding % error for density formula: experienced value-accepted value/ accepted value ×100. Does the ×100 cancel out the percent sign? EX; 7.28g/mL-6.54g/mL/6.54g/mL ×100. Is the answer 11.31 or 11.31% The lab
  81. Chemistry

    What is the CHANGE in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10-5.
  82. algebra

    I need to check & see if I understand this. 100,000 base 100 is 100 with an exponent of 5, right?
  83. statistics

    If X is a random variable which is normally distributed with a mean of 100, then P(X<100)=P(X>100) True or False?
  84. 6th grade math

    ok 4/25 * 75/100 then switch it to divison 4/25 / 75/100 but you need the recipricle so its 4/25 / 100/75 =?
  85. Math Help

    1. 77 is what percent of 192? A. x/100=77/192;4.01%**** B. x/100=77/192;40.1% C. x/77=100/192;77.3% D. x/100=192/77;249.4% 2.Of the 80 eigth-graders, 32 are going on the class retreat. What percnt of the eigth grade going on the retreat? A. 25% B. 55% C.
  86. Math- STATS 218

    When the following hypotheses are being tested at a level of significance of aH0: m 100 Ha: m < 100 the null hypothesis will be rejected if the test statistic Z is a. >Z b. >Z c. <Z d. <100
  87. find my grade average

    -10% of my grade *82 -20% of my grade *100% *100% *100% *100% *100% *100% *100% *100% *82% -30% of my grade none -40% of my grade *76% reply as soon as possible. thank you!!!!
  88. math

    A farmer has $100.he has to buy 100 farm animals.He has to spend exactly $100 and get exactly 100 farm animals. Whats a solution for this problem
  89. Science

    How much heat is absorbed by a persons hand if 100 grams of steam at 100°C is first converted to liquid water at 100°C and then cooled to normal body temperature?
  90. physic

    If the energy used to heat up a block of 2kg of copper is 115.8 kJ, what is the temperature it was heated to if the starting temperature was 100oC and the specific heat capacity is 386 J/kgK. E=MC(T2-T1) 115800=2*112.85(T2-100) 115800=225.7(T2-100)
  91. physic..plz check if corrected

    If the energy used to heat up a block of 2kg of copper is 115.8 kJ, what is the temperature it was heated to if the starting temperature was 100oC and the specific heat capacity is 386 J/kgK. E=MC(T2-T1) 115800=2*112.85(T2-100) 115800=225.7(T2-100)
  92. Algebra

    A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100 lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture? My problem is
  93. College Economics

    An economy has the follwoing comsumption function: C= 200+ 0.8di The government budget is balanced with government purchases and taxes both fixed at $100. Net exports are $100. Investments $600. Find the equilibrium GDP. What is the multiplier for this
  94. Math

    Express 0.54 as a fraction in simplest form. .54/100 54/100 27/50******* 100/54
  95. math

    How to complete the following number sentences so that the answer to each is 1. x/100 + 6/100 +75/100 =1 x/10- 2/10- 4/10 -2/10 = 1
  96. Physics

    Which would burn the most 100 g of water at 100 degrees C or 100 g of steam at 100 degrees C?
  97. accounting

    A bond sinking fund investment is started on January 5, 2010, by transferring $10,000 in cash to the fund. This $10,000 is invested and earns $1,100 during 2010. The entry to record the earnings made on the sinking fund investment includes a debit to
  98. Physical science

    how many calories to change 100 grams of water at 100 degrees C. to 100 grams of steam at 100 degrees C.?
  99. accounting

    A bond sinking fund investment is started on January 5, 2010, by transferring $10,000 in cash to the fund. This $10,000 is invested and earns $1,100 during 2010. The entry to record the earnings made on the sinking fund investment includes a debit to
  100. math(PLEase help me check.)

    1) C=md+t The cost C, of a business trip is represented by the equation above, where m is a constant, d is the number of days of the complete trip, and t is the cost of transportation, which doesn't change. If the business trip was increased by 5 days, how