1. 5th grade math

    A list of numbers represents the following pattern: For each number after the first, multiply the previous number by itself, and then subtract that number. Which list does NOT represent that pattern? A. 1,1,1,1, and so on B. 2,2,2,2, and so on C.
  2. math

    the florida lottery is made up of the number 1-49. my mother observed that the winning numbers many times are prim numbers. a. list the prime numbers from 1-49 b. what is the probability of a prime number being picked randomly from the numbers 1-49? c. is
  3. Statistics

    A quiz consists of 10 questions. Each question is marked either “right” or “wrong.” For each student in the class, the instructor keeps a record of the number of right answers the student got. In the class, the average number of right answers is
  4. Calculus

    Evaluate the definite integral from [0,4] 4x^2 dx, by using its definition as a limit of approximating sums. First, I solve analytically so I know the answer I am trying to reach: 4/3 * x^3 over [0,4] = 4/3 * 4^3 = 256/3 Now, by approximating sums, I can
  5. math

    I fyou start with 2 and count by 4s until youreach the number 202, you will have the following number sequence. 2, 6, 10, 14...202 If 2 is the first number in the sequence, 6 is the second and so on, what number in the sequence is 202?
  6. Math

    Eighteen students in a class play baseball. Seventeen students in the class play basketball. Thirty students in the class plau either or both sports. Select the Venn diagram that shows the number of students who play basketball and baseball. A.The first
  7. checking answers 4 algerbra

    1. simplify by removing the parenthses and collecting like terms. 83q - (39q-38)=44q+38? 2. solve for y---z=ym answer y=z/m? 3. divide if possible -6/"over" 17 divided by (-5/"over"17)=undefined? 4. translate to algerbirc expression the sum of c and n=
  8. math

    a series of numbers starts with 2.each number in the series is two times as great as the number before it.what is the sixth number in the series.
  9. Pre Calc - Probability

    Let S = {2, 8, 14} be a sample space associated with an experiment. (a) List all events of this experiment. A) {2, 8}, {2, 14}, {8, 14}, {2, 8, 14} B) {2}, {8}, {14}, {2, 8}, {2, 14}, {8, 14} C) {2}, {8}, {14}, {2, 8}, {2, 14}, {8, 14}, {2, 8, D) 14} E)
  10. Math

    A triangular number is a number that can be represented by dots arranged in a triangular shape. The first four triangular numbers are 1, 3, 6, 10. What is the 10 triangular number? The 20th? The 100th?
  11. Math

    Sara is thinking of a number. When she rounds her number to the nearest hundred, she gets700. What is the greatest number Sara can be thinking of? Explain.
  12. math

    Sara is thinking of a number when she rounds her number to the nearest hundred,she gets 700.What is the greatest number Sara can be thinking of?Explain
  13. Math

    Can someone help me with this question? Conduct an interview to find out how someone else responds to the question, " Why is a negative number times a negative number a positive number?" Thanks.
  14. math

    the denominator of a rational number is greater than its numerator BY 7 if the numerator is increased by 17 and the denominator is deacreased by 6 the new number becomes 2 find the orginal number
  15. Math

    Hello. 1. 86 is 45% of what number? A. 86 = 0.45n *** B. n = 0.45 x 86 C. 0.45 = n x 86 D. 86 = 45n 2. What percent of 26 is 4? A. 0.26 = n x 4 B. n = 0.26 x 4 C. 4 = n x 26 *** D. 26 = 4n 3. What percent of 250 is 70? A. 3.6% B. 18% C. 28% *** D. 175% 4.
  16. Algebra please?

    This is my last test question :) How does finding the square root of a number compare to finding the cube root of a number? Use the number 64 in your explanation.
  17. Math 3

    Find the least and greatest possible original numbers: ROUNDED PLACE is Thousands, ROUNDED NUMBER is 1,800. What is the Least number and the Greatest number?
  18. Math

    A decimal number changed to 23.7 after it was rounded. Give a decimal number that is less than 23.7 and another that is greater than 23.7 that each round to 23.7. Explain to what place each number was rounded.
  19. math

    Find the least and greatest possible original numbers: ROUNDED PLACE is Tens, ROUNDED NUMBER is 460. What is the Least number and the Greatest number?
  20. algebra

    Four times a number plus five times the number is the same as ten more then eight times the number. Find the number.
  21. JAVA PROGRAMMING

    im new to java and this is my first assignment can anyone help me solving it: compile the class final grades, based on the students’ scores obtained in the classwork, mid-term, and final exams. According to the course syllabus, the classwork accounts for
  22. math

    Farah, Kate and Jane have managed their savings well. The sum of Farah and Kate's savings is $1548. Farah and Jane's savings sum up to $1842. The ratio of Kate to Jane's savings is 4 : 7. How much has Farah saved?
  23. Physics

    you a resident physician are reading the medical chart o a normal adult female patient carelessly one of the nurses has entered this nurse's suggestion is physically reasonable: (a) the number is 150 and units are kilograms. (b) the number is 4.25 and the
  24. 11th grade-Calculas

    The number of hours of daylight D depends upon the latitude and the day t of the year and is given by the equation : D(t)=12+Asin(((2pi)/(365))(t-80)) where A depends only on the latitude (and not t). for latitude 30 degress, A is about 2.3 1. When is the
  25. math

    which of these numbers can be classified as both rational and real? a. 1/2 b. -1.016879413894 c. square root of 5 d. 0.89089908999 which is both a real number and an integer? a. square root of 7 b. 0.15 c. -15 d. 1/3 what is an example of an irrational
  26. another A.P Chemistry Question

    A different rigid 5.00L cylinder contains 0.176mol of NO(g) at 298 k. A 0.176mol sample of 02(g) is added to the cylinder, where a reaction occurs to produce NO2(g) (d) write the balanced equation for the reaction. (e) calculate the total pressure, in atm,
  27. chemistry

    write the formulas of the complex ion formed between a) the ligand, Cl-, and the platinum(II) ion with a coordination number of four. b) the ligand, NH3, and the nickel(II( ion with a coordination number of six. c)the ligand, ethylenediamine, and the
  28. chemistry HELP PLEASE

    write the formulas of the complex ion formed between a) the ligand, Cl-, and the platinum(II) ion with a coordination number of four. b) the ligand, NH3, and the nickel(II( ion with a coordination number of six. c)the ligand, ethylenediamine, and the
  29. math - statistics

    Suppose that the number of insects captured in a trap on different nights is normally distributed with mean 2950 and standard deviation 550. b) Suppose that we change the location of a trap whenever it captures a number of insects that fall in the lowest
  30. 4th grade math

    solve the following problems using pictures, number or words. At president's inaguration in 1861, the newpaper headlines stated there were about 30,000 people in attendance. If the newpaper rounded to the nearest thousand, what is the largest number and
  31. Math

    Mr. Abernathy purchased a selection of wrenches for his shop. The total cost was $78. He bought the same number of $1.50 and $2.50 wrenches, and half that many $4 wrenches. The number of $3 wrenches was one more than the number of $4 wrenches. How many of
  32. Math Proof

    Prove that square root of 12 is irrational. **I don't know if I did this correctly PF: By contrapositive, assume sqrt(12) is rational. Then there exist an a,b as integers such that a/b is written in the lowest terms, and sqrt(12)=a/b. Then by squaring both
  33. Calculus help and please check answer for a)

    The decay of a certain substance is modeled by the function N(t)=100(3+e^(-t/3), where the number of particles is represented by N in a time of t hours. a) what is the initial number of particles? - I set t as 0 and got an answer of 400 particles initially
  34. math

    Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of homes built can be modeled by an exponential function, H= p *
  35. Math

    Hi! I just want someone to check my answers please! I cannot provide you with any pictures as I have gotten them off of my schools website. You cannot access these pictures because you have to be logged in. 1. Andrea drew triangle JKL as shown. A. The sum
  36. Algebra

    A group of students plotted the number of hours they worked at a cake shop during the holidays and the number of cakes they delivered in a week. Graph shows 0 to 60 on x axis and y axes at increments of 10. The label on the x axis is Weekly Hours Worked,
  37. Algebra

    number of hours they worked at a cake shop during the holidays and the number of cakes they delivered in a week. Graph shows 0 to 60 on x axis and y axes at increments of 10. The label on the x axis is Weekly Hours Worked, and the label on the y axis is
  38. AIG MATH

    A fruit seller has an equal number of apples and oranges.He sold 109 oranges and 45 apples.The number of apples left is 5 times the number of oranges left.What is the total number of fruit he had at first?
  39. Chemistry

    How many neutrons in carbon-12 and how did you get yuor answer The atomic number is the number of protons. Look for element number 6 on the periodic table and see carbon. For carbon, there are 6 protons. # protons + # neutrons = mass number 6 + # neutrons
  40. sum

    what is 13
  41. Chemistry

    1) What is the atomic # for selenium? 34 2) Write the full electron configuration for selenium following the (n+l) rule? I am not sure what is meant by n+l 3) write the electron configuration, grouping electrons by their "n" values. [Ar]3d10 4s2 4p4 Are
  42. Math

    A positive integer n is defined as a "prime interlude" if n-1 and n+1 are both prime numbers. Which of the following is not a "prime interlude?" a.4 b.18 c.30 d.72 e.90 ( First of all; What is a "prime interlude??") I don't understand the question and
  43. need help in tis problem

    which biconditional is not a good definition? 1. a whole number is odd if and only the number is not divisible by 2 2. an angle is straight if and only if its measure is 180 3. a whole number is even if and only if it is divisible by 2 4. a ray is a
  44. Chemistry

    Working on a practice question for finals so I really want to understand how this works: What is the coordination number of mercury in K2[HgI4]? I say that mercury's coordination number is 4 because I^- is a monodentate ligand. Does the potassium affect
  45. Science

    Hey....I need help with my homework. I'm in 9th grade, high school. Its pyhsical science about Atomic Math.. Heres the question: Multiply the atomic number of hydrogen by the number of electrons in mercury, which has an atomic number of 80.
  46. Calculus

    Find two numbers such that the sum of the first plus three times the second is 600 and their product is a maximum. x + 3y=600 xy is a max. This is the problem statement. let U be the function equal to xy. U=xy = y(600-3y) Now, maximize U (take derivative,
  47. math

    You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3
  48. math

    You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2 to power 2 3 to power 3
  49. math

    n added to a number equals 14. A number added to 14 equals 114. What does the variable y represent? And what number plus 14 equals 114? I keep coming up with n = 0 and x = 100 I think we are all trying to understand what your problem really says. Where
  50. Math

    The sum of the length, width, and height of a box is 80 cm. The length is 10 cm less than twice the sum of the width and the height, and twice the width exceeds the height by 6 cm. Find the height of the box.
  51. Maths

    A spider has 8 legs, a dragonfly has 6 legs. Given a number of spiders and dragonflies altogether have 420 legs, number of spiders are 3 times the number of dragonflies, the number of spiders are?
  52. math

    A midwestern music competition awarded 38 ribbons. The number of blue ribbons awarded was 3 less than the number of white ribbons. The number of red ribbons was 2 more than the number of white ribbons. How many of each kind of ribbon was awarded?
  53. math

    a midwestern music competition awarded 32 ribbons. the number of blue ribbons awarded was 3 less than the number of white ribbons. the number of red ribbons was 2 more than the number of white ribbons. how many of each kind of ribbon was awarded?
  54. Programming Logic and Design

    Create a class named Year that contains data fields to hold the number of months in a year and the number of days in a year. Include a constructor that sets the number of months to 12 and the number of days to 365, and get and set methods for each field.
  55. Math

    What is the ANS button for on Ti-83 Hi, I am learning about storing numbers on my Ti-83. I understand how to store a number, but I do not know what the ANS key is for, when I use it I get a different number because I use e^x--> ans-->enter, which
  56. Math

    Journal 5. Look at the hundred chart. One number is wrong. Cross out that number and write the right number instead. Then explain how you know. The chart shows the numbers 17,18, and 19 going across then it shows the square blank then 28,29 finally it
  57. chemistry

    the number of molecules in 6.843*10^-2 kg of Al(NO3)3 is: and this is what i have done so far... 1st i converted the kg to g which is 6.843*10^-5. then i figured out the moles:6.843*10^-5/213.01 i got 3.21*10^-7. i then multiplied this number by avogadro's
  58. math

    Ture or false questions: Your teacher gives a true-false pop quiz with 10 questions. Show that the number of possible outcomes for the sample space of possible sequences of 10 answers is 1024. I got false and the number is 182 but don't think I have the
  59. pre calc

    The number N of bacteria in a culture at time t (in hours) grows exponentially according to the function N(t) = 1000e^0.01t. 1.What is the population after 4 hours? 2.When will the number of bacteria reach 1700? 3. When will the number of bacteria double?
  60. math

    Create a lineaer equation from your own life and then write a brief paper describing this linear function. It should relate a particular 'thing' to another 'thing'. It could be something about the amount of money you spend, the number of minutes you spend
  61. maths

    I am preparing myself for the Entrance Exams so I need help. 1. The middle number of 5 odd numbers is 297. What is the last number? 297 -->-----|-----|-----|-----|-----|-----<-- * Number line* 2. If there is a 10% service change in a restaurant, what
  62. math

    Which relationship would most likely have a positive correlation? The amount of memory in computer, and the number of keys on the keyboard. The rate at which a train travels, and the time it takes for it to reach its destination. The number of tickets sold
  63. Math

    Please check to see if I did this correctly. This is a 2 part math problem. 1. Janelle has d dimes and n nickles. Her sister has 5 times as many dimes and 6 times as many nickles as Janelle has. Write the sum of the number of coins they have, and then
  64. Math

    40 children were selling tickets for a charity. The ratio of the number of tickets each boy sold to the number of tickets each girl sold was 3:2. a)If 106 tickets were sold altogether, how many boys were there? b)What is the ratio of the number of boys to
  65. math

    Hi! I am new to Jishka and I need help checking my answers. 1. Which proportion can be used to determine what number is 15% of 30? A. 15/30 = x/100 (Mine) B. 15/100 = x/30 C. 15/100 30/x D. 30/100 = 15/x 2. Which equation can be used to determine what
  66. math

    can someone help explain how to do this? allen has nickels dimes and quarters in his pocket. the number of nickels is 1 more than twice the number of quarters. the number of dimes is 1 less than the number of quarters. if the value of change in his pocket
  67. math

    Please, help me to solve this problems by Cramer's rule Question number : 1. 5/x + 3/y = 19 2/x + 1/y = 7 Question number : 2. log x + 2 log y = 4 2 log x - 3 log y = 1 The Answer for number 1 : D = -1 Dx = -2 Dy = -3 The answer for number 2 : D = -5 Dx =
  68. java programming

    1. Time Calculator Write a program that asks the user to enter a number of seconds. • There are 60 seconds in a minute. If the number of seconds entered by the user is greater than or equal to 60, the program should display the number of minutes in that
  69. math

    You can use the prime factorization of a number, written as the product of powers of prime numbers, to find the number of factors the number has. First, express the number as a product of powers of prime numbers; for example, 36=2^2 3^2 (that is 2 squared
  70. Math

    Help me!;/ 1) my numerator is 6 less than my denominator. I am equivalent to 3/4. 2)my denominator is 5 more than twice my numerator. I am equivalent to 1/3. 3)the gcf of my numerator and denominator is 3. I am equivalent to 2/5. 4)the gcf of my numerator
  71. cis

    I have to find three errors and ther two logic and syntax error. HELP ME IN IT AND Below is code. Rem ===========BEGIN SAMPLE CODE============ REM Read 9 scores and report the average Dim score(10) For i = 1 to 10 CALL fillArray PRINT "The average score is
  72. Math

    At a college basketball game, the ratio of the number of freshmen who attended to the number of juniors who attended was 3 to 4. The ratio of the number of juniors who attended to the number of seniors who attended was 7 to 6. What was the ratio of the
  73. chemistry

    What is the sum of the coefficients (including “1”) of the balanced equation? __CaCO3 + __NaF __ CaF2 + __Na2CO3 4 5 6 7 8 If you start with 20.0 grams CaCO3, how many moles of CaCO3 do you have? 20.0 2.00 .200 .0200 .0386 If you start with .500 moles
  74. Physics please check

    A rotating door is made from four rectangular glass panes, as shown in the drawing. The mass of each pane is 88 kg. A person pushes on the outer edge of one pane with a force of F = 53 N that is directed perpendicular to the pane. Determine the magnitude
  75. prime numbers

    Which of these is a prime number? 407, 409, 411, or 413 409 how did you get that? Suppose you are given some number N. If x<sqrt[N] then N/x will be larger than sqrt[N]. This means that any factor of N must be smaller than or equal to the square root of
  76. physics

    For any circuit the number of independent equations containing emfs, resistances, and currents equals the number of branches. why? The only type of circuit that branches is parallel. But there can be electric circuit with a combination of both parallel and
  77. Physics

    2. A magnetic levitation or maglev train rides rails without touching them. Explain how this works using your data. Distance from surface (cm) Number of lines/0.5 cm Average number of lines/0.5 cm Field density (number of lines/cm) Side 1 Side 2 0.5 6 6 12
  78. Physics

    2. A magnetic levitation or maglev train rides rails without touching them. Explain how this works using your data. Distance from surface (cm) Number of lines/0.5 cm Average number of lines/0.5 cm Field density (number of lines/cm) Side 1 Side 2 0.5 6 6 12
  79. Stats

    3. Suppose you work for the Ford Motor Company and must establish regulations concerning the maximum number of people who can ride in a minivan. Ford tells you that the total number of people in a minivan follows a normal distribution with a mean of 6 and
  80. algebra (check answers)

    1. a rectangle has side lengths (x + 5) meters and (2x - 1) meters. write an expression in simplest form that represents the perimeter of the rectangle. my answer is 6x + 4 2. find the sum and difference: 2(3x - 4) + (2x - 5) = 8x - 13 2(3x - 4) - (2x - 5)
  81. Math!(Need More Help!I did #4,is ti right?)

    Directions:Write inequalities for the numbers 3 - 4 below. Do not solve them! Problems: 3.Stacey and Luis volunteer at the local hospital. Stacey worked 4 more hours than Luis, and together they worked more than 28 hours. What is the least number of hours
  82. Elmentary Math for Teachers II

    A spinner containing 8 numbers is spun. What is the probability of the event that the spinner A.) lands on an odd number? B.)lands on a number divisible by 3? C.)does not land on 5,6, or 7? D.)lands on a number less than 4?
  83. Math

    If the number of male students and female students in each of 3 classes is equal, and the average number of males in each class is 30, What is the total number of students in all 3 classes? *My answer is 180, but I'm not sure.
  84. calculus

    The number of hours of daylight D depends upon the latitude and the day t of the year and is given by the equation : D(t)=12+Asin(((2pi)/(365))(t-80)) where A depends only on the latitude (and not t). for latitude 30 degress, A is about 2.3 1. When is the
  85. Math

    1. 5h – 9 = –16 + 6h (1 point) 4 –7 7 10 2. 4x + 4 = 9x – 36 (1 point) –8 –7 8 –3 3. Which of the following equations has an infinite number of solutions? (1 point) 3x – 3 = –4x 2y + 4 – y = 16 7x + 5 = 4x + 5 + 3x 6y – 2 = 2(y – 1)
  86. Statistics

    Refer to the baseball 2008 data, which report information on the 30 Major League Baseball teams for the 2008 season. Let the number of games won be the dependent variable and the following variable be independent variables: Team batting average, number of
  87. math statistics

    For each probability and percentile problem, draw the picture. A random number generator picks a number from 1 to 9 in a uniform manner. 1) Give the distribution of X. X = 2) Enter an exact number as an integer, fraction, or decimal. f(x) = where
  88. math

    Muthu, Ali and Bill shared a sum of money. 30% of Muthu's share was equal to 80% of Ali's share. Bill's share was 25% of Muthu's share. Ali had $185 more than Bill. (a) Find the total sum of money. (b) If Muthu gave Bill 55% of his share, what percent of
  89. Science

    1. Which statement about subatomic particles is NOT true? (1 point) Protons and neutrons have almost the same mass. Protons and electrons have opposite charges. Unlike protons and electrons, neutrons have no charge. Protons and neutrons have the same
  90. Economics

    A city must decide whether to build a downtown parking garage and what rate to charge. It is considering two rates: a flat $1.50-per-hour rate or an all-day rate averaging $1 per hour (based on a $10 daily rate and an average 10-hour stay). Parking demand
  91. math

    Tickets for a concert sold for $11 and $8. If 600 tickets were sold for one evening and the receipts were $5500, how many of each were sold? Let the number of $11 tickets be x, then the number of $8 tickets would be 600-x Now we consider the cost of these
  92. PLLZ!PLLZ help with math quick!!!!!

    6.Suppose you have a drawer full of white, black, and yellow pairs of socks. If the probability of picking a white pair of socks is 4/9, and the probability of picking a black pair of socks is 7/18, what is the probability of picking a yellow pair of
  93. 4th grade math

    solve the following problems using pictures, number or words. At president's inaguration in 2005, the newpaper headlines stated there were about 400,000 people in attendance. If the newpaper rounded to the nearest ten thousand, what is the largest number
  94. 4th grade math

    solve the following problems using pictures, number or words. At president's inaguration in 2013, the newpaper headlines stated there were about 800,000 people in attendance. If the newpaper rounded to the nearest hundred thousand, what is the largest
  95. math

    The ratio of guppies to angelfish in a shop was 2:3. The number of angelfish was 2/3 the number of goldfish. The shopkeeper decided to replace 1/4 of the guppies with some angelfish. The number of angelfish she added was equal to the number of guppies she
  96. Calculus

    use the intermediate value theorem to prove that every real number has a cubic root. That is, prove that for any real number a there exists a number c such that c^3=a
  97. Math

    A number to the 12th power divided by the same number to the 9th power equals 125. What is the number? 125 - Am I correct
  98. math

    how do you write this number in standard form. I will have to write the -2 in brackets because it is supposed to be a power to number but I do not know how to type that out. So the number is 10(-2). You would say 10 to the power of -2 I think.
  99. algebra

    for number 2, i thought it was y = 5x because if you multiply 5 by any of the numbers in the x colum, it equal y Also for number 3, could you further explan, are you saying the answer is zero? As for number one, is the answer 1/x-3 where x does not equal
  100. math

    A number is chosen from the first 24 positive integers. Find the probability that: a) the number is divisible by 3 given that it is divisible by 4 b) the number is divisible by 6 given that it is divisible by 3 Just need help with either one, thank you for