1. Biology

    If the line for 60 captured is extended downward to zero percent error, what fraction of the total population would this represent? (Compare the actual number in the can to the extrapolated number on your graph.) What more information do I need to provide

    asked by Robin on July 15, 2012
  2. Trigonometry

    There are four complex fourth roots to the number 4−4√3i. These can be expressed in polar form as z1=r1(cosθ1+isinθ1) z2=r2(cosθ2+isinθ2) z3=r3(cosθ3+isinθ3) z4=r4(cosθ4+isinθ4), where ri is a real number and 0∘≤θi

    asked by Shin on May 27, 2013
  3. Physics

    A vehicle is travelling at 25.0 m/s. It brakes provide an acceleration of -3.75 m/s^2[forward]. What is the driver's maximum reaction time if she is to avoid hitting an obstacle 95.0 m away? the answer is a number less than 0.5 second. can you tell me the

    asked by Dee on October 31, 2011
  4. VB

    Programming in Visual basic 2008 exercise 11.5 Create a project that store personal information for a little electronic “Black Book” the fields should include name, phone number, pager number, cell phone number, voice mail number and email address.

    asked by Phanel on April 28, 2011
  5. furth math

    in a school,180 students play hockey or football.the number that play football is 5 more than twice the number that play hockey.if 15 students play both games and every student in the school plays at least one game,find:1) the number of students that play

    asked by Anonymous on September 4, 2017
  6. math

    In Lewis Carroll's Through The looking Glass, Tweedledum says, "the sum of your weight and twice mine is 361 pounds". Tweedledee replies, "The sum of your weight and twice mine is 362 pounds". Find both weights. ONLY AN ALGEBRAIC SOLUTION WILL BE ACCEPTED

    asked by B8 on February 8, 2014
  7. math

    describe the situation from the veiwpoint of each person. during a year a person saves 12oo dollars and another person spends 500 dollar. which real number corresponds to saves 1200 dollars. type a negative number with a negative sign, or type a positive

    asked by Cathy on September 27, 2009
  8. Please Help

    The subject is chemistry, okay so like The questions states are many atoms are there is 7.62g of Si? But all I am asking is if you can give me the equation to set up th eporblem then ask me to answer it, then I can give you my answer so your can see if it

    asked by Cupcake on October 17, 2006
  9. Math

    A ship is traveling due north. Every 30 mins,the captain corrects his course by a certain number of degrees.Here are the corrections made during the first four hours of the voyage: 5,-7,3,2,-6,8,-4,-6 ps theres degrees in the numbers Note:in marine

    asked by Natalie on January 14, 2013
  10. statistics

    1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company is 25 with a

    asked by Anonymous on March 10, 2014
  11. math

    sara inspected the horses and hens in her farm one morning. Afterwards, we could not remember how many animals of each kind she had, but knew the total number of these animals was 27, her own age in 1997. She also knew that the total number of legs was 70,

    asked by kelley on September 5, 2017
  12. Chemistry

    What is the number of double or triple bonds in the formula C3H8? What is the number of lone pairs Around each atom? And what is the number of single covalent bonds? I also need help with the formula C3H6O with the same questions! For C3H8 I got 10 single

    asked by Meena on October 2, 2014
  13. math

    sarah works in the clubhouse golf course. She receives a case containing 125 golf balls. the number of boxes in the case is equal to the number of packs in each box. and the number of packs in each box is equal to the number of golf balls in each pack. how

    asked by Anonymous on December 5, 2014
  14. Algebra 2

    would some one please check these for me 1. divide x^2-36y^2 over 5x^2+30y divide (x^2-6xy) A: x+6y over (5x)(x^2+6y) 2. Add. Express your answer in simplest form. 2x 0ver x^2+15x+54 + 4over x+6 A: 6 over x+9 3. solve: (9 over x-5) -1= 8 over x+5 A: -10

    asked by Ray on June 2, 2007
  15. Algebra

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

    asked by mysterychicken on May 14, 2010
  16. linear equations in one variable

    I have a total of ₹300 in coins of denomination ₹1,₹2 and ₹5.The number of ₹2 coins is 3 times the number of ₹5 coins.The total number of coins is 160.How many coins of each denominations are with me?

    asked by sunil on April 7, 2016
  17. Algebra

    Change to fractional notation in simplest form using limit or sum of an infinite series 4.234 (34 repeating)

    asked by Emily on November 27, 2017
  18. Math

    Find two consecutive even integers such that the sum of the larger and 3 times the smaller is 234. I don't get how to put it as in equation.

    asked by Ally on October 12, 2015
  19. algebra

    Suppose the lengths of the four side of a quadrilateral are represented by the expressions 3a, a+2, 2a-1, and 3a+6. write the sum of the lenghts (the perimeter), and then simplify.

    asked by yasha on October 16, 2008
  20. Algebra

    Help! 13. Use the Distributive Property to simplify 7(6x^2 + 5x + 4) 15. Evaluate 5w^2 if w = .5 Is it 6.25? 19. Write a simplified expression to represent 5 times the sum of x and 3 increased by 10. Is it 10+5(x+3) ? Thanks -MC

    asked by mysterychicken on March 30, 2010
  21. Math

    Multiply using the rule for the product of the sum and difference of two terms. Assume any variable exponents represent whole numbers. (x - y + 11)(x - y - 11)

    asked by ReRe on February 24, 2010
  22. Algebra

    When the product (3x+2y+1)(x+4y+5) is expanded, what is the sum of the coefficients of the terms which contain a nonzero power of y? I got 3x^2+14xy+16x+8y^2+14y+5 would the answer be 36?

    asked by Trish Goal on November 13, 2014
  23. Statistics

    If the interest rate is 3% and a total of $4,370.91 will be paid to you at the end of 3 yrars, what is the present value of that sum? my answer: $4,ooo.oo

    asked by India on September 13, 2012
  24. Algebra

    Help!! 13. Use the Distributive Property to simplify 7(6x^2 + 5x + 4) 15. Evaluate 5w^2 if w = .5 19. Write a simplified expression to represent 5 times the sum of x and 3 increased by 10. Is it 10+5(x+3) ? Thanks -MC

    asked by mysterychicken on March 30, 2010
  25. MATH

    three consecutive terms of a geomentric progression series have product 343 and sum 49/2. fine the numbers. HOW WILL ONE SOLVE THAT? THANKS

    asked by Archiebald on July 18, 2016
  26. math

    For an arithmetic sequence, a_{19} = 78. If the common difference is -3, find a_1 = (i found it to be 132) the sum of the first 57 terms =?? -I know there is a formula but i cant think of what it is

    asked by Ellie on October 25, 2009
  27. Math

    Kate is 4yrs older than Margaret . In 7yrs the sum of their ages will be 70. How old are they now. How do you find kates age using mArgarets

    asked by Amy on February 10, 2011
  28. Statistics

    The residual sum of the squares is the numerator portion of the formula for the variance of y about the regression line. True False

    asked by Mike on November 6, 2012
  29. Math.

    Create a "magic" square (4 columns wide x 4 rows deep) using the 12 through 27. The sum of each column should be 78, each row should be 78 and the diagonals as well.

    asked by Unknown. on December 6, 2010
  30. Statistics

    The residual sum of the squares is the numerator portion of the formula for the variance of y about the regression line. True False

    asked by Mike on November 5, 2012
  31. Algebra

    Find the sum of (-3a+4cd-6ac)-(7ab-9cd-10ac)+(-8ab+cd-2ac)-(9ab-5cd+CD)

    asked by Gler on June 15, 2016
  32. math - algebra

    Please help with this question: Rewrite the middle term as the sum of two terms and then factor completely. 10x2 + 19x + 6 it is for a test...thanks

    asked by Rebeca on November 11, 2007
  33. Statistics

    a fair dice is tossed seven times. suppose that on tosses 2 through 7, the value seen is different from the value seen on the preceding toss. Let S denote the sum of the 7 value seen, the probability that s to be even is

    asked by Appollonius on August 19, 2011
  34. Math check see if i;m coorrect

    In division, a problem includes a divisor, a dividend, and a(n) ______. A. product B. sum C. expression D. quotient My answer is b

    asked by Angie on August 31, 2014
  35. Urgent math

    Please help me solve this problem?!?! Find the first six terms and the sixth partial sum of the sequence whose nth term is an = 5n2 − n. a1 = a2 = a3 = a4 = a5 = a6 = S6 =

    asked by Briane Mendez on August 12, 2015
  36. business

    #28 The following is a partial ANOVA table. Sum of Mean Source Squares df Square F Treatment 2 Error 20 Total 500 11

    asked by karen on January 5, 2011
  37. Calculus -Series3

    Find the sum of the following convergent series: (a) Ei=1 1 / (3i - 2)(3i + 1) I know that it equals: = 1/4 + 1/28 + 1/70 + 1/130 + 1/208 a= 1/4, but I can't figure out what r = 1/4 * 1/7 = 1/28, but from 1/28 to 1/70 and so on it doesn't work anymore.

    asked by Paul on September 20, 2012
  38. Analytic Geometry

    Please help me to solve this problem. Find the equation of the locus of a moving point if the sum of the slopes of the line joining it to (1,3) and (4,-2) is 1.

    asked by xavier on December 13, 2012
  39. math

    place decimal points in these numbers so that their sum is 519.654. 477,329,624,913

    asked by bryce on August 22, 2011
  40. Math

    1.calculate the sum of the infinite series S(infinity)=16+4+1+..., (1 point) A. -16/3 B.64/3 C.12 D. It does not converge 2.Which of the following formulas can be used to write 0.797979... as a fraction?

    asked by Morgan on December 6, 2018
  41. trigonometry

    Find the sum of all of the solutions to the equation cos(2x) - sin2(x) - 1 = 0 in the interval 0 < x < 5 pi. (Use radian measure for x.) (A) 15pi (B) 0 (C) pi (D) 10pi (E) None of the above.

    asked by lan on May 12, 2011
  42. calculus

    Calculate the left Riemann sum for the given function over the given interval, using the given value of n. (When rounding, round answers to four decimal places.) f(x) = e^−x over [−6, 6], n = 6

    asked by louis on July 12, 2011
  43. Trigonometry

    Let S be the sum of all the possible values of sin x that satisfy the following equation: 5-2cos^2(x)-7sin(x) = 0 S can be written as a/b, where a and b are coprime positive integers. What is the value of a + b?

    asked by Tony on March 6, 2013
  44. Cal II

    express integrand as sum of partial fractions and evaluate the integral. My answer is 3 ln x + -2ln(x+2). But the choices are nothing like this. What am i doing wrong??

    asked by UGH! on October 28, 2013
  45. Math (Complex Numbers)

    Let a,b,c be complex numbers satisfying a+b+c=abc=1 and (ab+bc+ac)/3=(1/a^2)+(1/b^2)+(1c^2) The sum of absolute values of all possible ab+bc+ac can be written as (√n)/m, where n and m are positive coprime integers. What is n+m?

    asked by Mahler on May 9, 2013
  46. Math 1

    Without finding the exact answer, select which of the following numbers is the best estimate of each sum or difference of 2/3, 0, or 2/3. of the problem 1/9 + 2/5 - 1/3 - 3/4. How would you solve this as an estimation?

    asked by Anonymous on October 9, 2009
  47. sum fun (math)

    find a quick and easy method to compute the sum of the first 100 counting numbers (no calculators allowed)

    asked by Jenny on January 27, 2010
  48. statistics

    One hundred draws will be made at random with replacement from the box 1, 1, 2, 2, 2, 4... The chance that the sum will be bigger than 250 is what percent?

    asked by Amanda on October 6, 2008
  49. econmics

    The lump sum payment survivors receive from social security to help pay funeral and burial expenses is:

    asked by Anonymous on May 29, 2013
  50. Economics

    The lump sum payment survivors receive from social security to help pay funeral and burial expenses is

    asked by Jacklene on September 17, 2012
  51. mathematics

    if the sum of the 6th and 7th terms of an arithmetic progression is 60 and the 3rd term is -5 find the common difference

    asked by Bella on January 11, 2015
  52. Emerson

    I'm helping my son he is in 4th grade . His hw it's hard and this is the problem : find two mixed numbers. So that the sum is 7 2/8 and the difference 2 4/8.

    asked by Claudia on March 3, 2015
  53. geometry

    how can we prove that an exterior angle of a triangle has measure equal to the sum of the measures of the 2 interior angles remote from it

    asked by Laura on June 22, 2009
  54. trig

    Find the sum of all of the solutions to the equation cos(2x) − sin2(x) − 1 = 0 in theinterval 0 < x < 5 pi. (Use radian measure for x.) (A) 15pi (B) 0 (C) pi (D) 10pi (E) None of the above.

    asked by minh on May 7, 2011
  55. Math

    ÚABC ~= ÚACB BD perpendicular AC The sum fo the three angles in any triangle is 180 degree. Prove: mÚCBD = 1/2 mÚBAC

    asked by Tom on October 14, 2012
  56. chemistry

    Could you explain this problem to me? What is the sum of the coefficients (including “1”) of the balanced equation? __CaCO3 + __NaF __ CaF2 + __Na2CO3 a.

    asked by key on January 29, 2007
  57. math

    Place decimal points in these numbers so that their sum is 519.654. 329 913 477 624

    asked by Kellie on August 17, 2010
  58. Pre-Calculus-check answers

    Use a sum or difference identity to find the exact value of sin 255 degrees Answer: sqrt6-sqrt2/4 Thanks

    asked by Lucy on August 30, 2008
  59. Algebra

    2 questions I need some help with please! 1. Find the partial sum S5. an= -2n+16 2.Solve the system by triangularizing the augmented matrix and using bakc substitution. 7x=y-6 3y= -5-2x

    asked by Kris on April 17, 2013
  60. series

    find the nth term awmd partail sum of the harmonic series below 1/3+1/8+1/15+1/12+..........show working plz

    asked by help on March 19, 2016
  61. calculus

    Find the exact value of the given expression using a sum or difference formula. sin 345° Can you help with this? I got 1/4 (squareroot 2 - square root 6)

    asked by megan on July 11, 2016
  62. algebra

    a group of 10 six and twelve volt batteries are wired in a series. the sum of their voltage is 84 volts. how many of each type of the battery are used

    asked by taylor on October 8, 2009
  63. algebra

    Please can someone help me? Thanks! Find the least common multiple of each pair of polynomials: 12x^2-6x-126 and 18x-63 Simplify each sum: 5y+2 2x-4 ---- + ----- xy^2 4xy

    asked by Elizabeth on May 7, 2007
  64. Calculus

    Consider all right circular cylinders for which the sum of the height and circumference is 30 centimeters. What is the radius of one with maximum volume. Work: V=(pi)r^2(h) h= V/(pi)(r^2) 2(pi)r + h=30 V=(pi)r^2(h) V'=2(pi)(r)h+2pi(r^2)=0

    asked by Anonymous on June 4, 2008
  65. math

    a certain sum of money amounts to rs8820 in 2yrs and to rs9261 in 3yrs at compd interest.find rate%

    asked by anoop on July 31, 2017
  66. math

    Carrie said that the best estimate for the sum of the heights is 10,000 feet. Explain hoe you would check her answer to see whether it is reasonable.

    asked by Inayah on October 1, 2011
  67. PLZ ANSWER THIS!!!! QUICK

    Suppose the lengths of the four side of a quadrilateral are represented by the expressions 3a, a+2, 2a-1, and 3a+6. write the sum of the lenghts (the perimeter), and then simplify.

    asked by yasha on October 16, 2008
  68. G.p.

    Find the sum of the geometric series 1+1/2+1/4+1/8+...to 12th terms, sir how are this question answer 4095/2048

    asked by Warnar on December 8, 2016
  69. Chemistry

    Calaculate the initial heat energy before mixing as the sum of (mcpt) for the hot and cold water,using Cp=4.184J/g-c

    asked by Rajii on April 1, 2012
  70. math

    The sides of two squares differ by 25cm while the sum of their areas is 2425cm. What is the length of the side of each square. Please answer. Thank you

    asked by Nimuel on August 14, 2016
  71. pre-calculus

    Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (cos 5x)^2

    asked by lina on April 3, 2012
  72. language

    Write these words in alphabetical order. Alphabetize them to the second letter. grim, blot, sum, build, shelf

    asked by ty on July 29, 2013
  73. java programming

    could someone help me create a source code that requires you to enter 2 numbers then gets the sum, difference, product and quotient of them after entering

    asked by mark on July 7, 2009
  74. pre-calculus

    Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (sinx)^4

    asked by lina on April 3, 2012
  75. math

    complete to show how you can find the sum by making a ten, hundred, or thousand. ex. 9 + 5= 9+1+____ 10+_____ ________

    asked by Anonymous on September 26, 2011
  76. HELP WITH ALGEBRA!!!!!!!

    Suppose the lengths of the four side of a quadrilateral are represented by the expressions 3a, a+2, 2a-1, and 3a+6. write the sum of the lenghts (the perimeter), and then simplify.

    asked by yasha on October 16, 2008
  77. Math

    In a cupboard there are pencils, rulers and books. The number of pencils is 15 more than that of rulers. The number of books is three time that of rulers. If the number of pencils is p, which one the total number of items in the cupboard?

    asked by K on January 15, 2018
  78. Algebra

    I am thinking of two numbers. The first number added to the second number is 5. Twice the first number added to twice the second number is 10. What are the numbers. ????? 1&4

    asked by Dylan on April 23, 2018
  79. chem experiment:

    You are required to design an experiment to test Hess's law using the combustion of ethanol. Write a brief design for this experiment. What I wrote as my answer: Hess’ Law: is the algebraic addition of chemical equations yields a net equation whose

    asked by rob on May 17, 2007
  80. 7th grade math

    A restaurant donates 2 cans of soup to charity for every 9 bowls of soup it sells. The number of cans of soup donated by the restaurant is proportional to the total number of bowls of soup sold. Which equation represents the relationship between b, the

    asked by Liz on March 29, 2013
  81. maths linear eqautions

    i have a number of sweets in a bag. if i removed three of them and divided the number remaining by 4, i would have two fewer than if i removed 7 and divided the number remaining by 3. How many sweets do i have (N-3)/4 = (N-7)/3 +2 check my thinking. I see

    asked by fussiilat on September 14, 2006
  82. chemistry - atoms

    Understanding Chemical Bonding This is a short activity to introduce you to the concept of chemical bonding. In this activity, you will take the number of your birth month as your atomic number. Using this information, you will be able to determine the

    asked by Mel on September 11, 2008
  83. VB

    I am new here; say to everyone first. Here is the a question for coding list box; it has two part: first part: Create a project that stores personal information for a little electronic "black book"; the fields in the file should include name, phone number,

    asked by austin on November 16, 2011
  84. Answers check and help!

    d. Calculate the mean square for 1) gender, 2) marital status, 3) interaction between gender and marital status, and 4) error or within variance. e. Calculate the F ratio for 1) gender, 2) marital status, and 3) interaction between gender and marital

    asked by Vanessa on September 24, 2013
  85. physics

    check which of the following modifications to a solenoid would be most likely to decrease the strength of its magnetic field? a. removing its iron rod core and increasing the number of coils b. increasing the current and reducing the number of coils c.

    asked by physics on March 12, 2009
  86. statistics

    Can someone provide me with some assistance in answering this question.. A company manufacturers batteries in BATCHES of 18 and there is a 3% rate of defect. Find the standard deviation for the number of defects per batch. The probability of a defect is p

    asked by john on August 5, 2007
  87. Poem Help Needed

    This is a poem by John Berryman that I am supposed to analyze and I am completely confused by. If anyone has any observations or ideas about the main idea of the poem, PLEASE help me out! "The Traveller" They pointed me out on the highway, and they said

    asked by Belinda on April 8, 2007
  88. trig

    prove that there exists no smallest possitive real number dose there exist a smallest positive rational number given a real number x, does there exist a smallest real y>x?

    asked by Sarah on August 28, 2012
  89. Chemistry

    For another picnic, you want to make hamburgers with pickles, again without having any left over. You need to balance the number of packages of buns (which usually contain 8 buns) with the number of packages of hamburger patties (which usually contain 12

    asked by Becca on January 19, 2015
  90. Math

    If you told someone that the greatest depth of Lake Superior is 1333ft would you be expressing a number similar to mode, median, mean or range? That would be the range. The mode is the numbers that appear most often. Median is the middle number and mean is

    asked by Connor on April 23, 2007
  91. Algebra 1

    Julie subscribes to a sports magazine and a fashion magazine. She received 24 issues this year. The number of fashion issues is 6 less than twice the number of sports issues. Define the variables, and write a system of equations to find the number of

    asked by Gabbi on February 17, 2014
  92. Algebra

    Andy has 145 coins in his coin bank. THe number of 5-denomination coins is 10 more than twice the number of 10-denomination coins. The difference between the number of 1-denomination coins and 5-denomination coins is 5 more than the number of

    asked by Ashley Kate on January 6, 2014
  93. Easy Math

    The number of positive integers that are less than 500 and that are not divisable by 2 or 3 is? There are 250 divisible by 2, 166 divisible by 3 and 83 divisible by both. So 250 + 166 - 83 = the numbers divisible by 2 or 3, without double counting.

    asked by Gina on October 7, 2006
  94. Math

    I have three more questions I do not understand. 1. Two points (-1,1) and (3,-2) are graphed on a coordinate plane. What is the shortest distance between the points? A. 3 B. 4 C. 5 D. 7 I have no idea how to do this. 2. Which expression represents the nth

    asked by Sammy on April 18, 2011
  95. algebra

    1. write an algebraic expression for the word phrase: the quotient of r and 12 a.r * 12 b.r/12**** c.r-12 2. write a word phrase for the algebraic expression: 2t - 9 a.nine fewer than two times a number t***** b.nine fewer than two times a number t c.nine

    asked by someone on August 23, 2015
  96. Hard Math :(

    2. What answer represents this number in scientific notation? 0.00000916 a. 916 x 10^-8 b. 9.16 x 10^-6 c. 916 x 10^8 d. 9.16 x 10^6 3. What is this number in standard form? 6.8 x 10^-4 a. 5,750,000,000 b. 575,000,000,000 c. 0.00000000575 d. 0.575000000000

    asked by Dude on September 10, 2012
  97. 6th grade Math

    1. At Saturday's football game, there were 45 more than half the fans at Fridays game. Assuming there were "x" fans at Friday's game, what expression represents the number of fans at Saturday's game? = 1/2x + 45 (1/2 times x plus 45) 2. What is the

    asked by Jared on November 8, 2018
  98. Algebra 2

    PLEASE HELP WITH THIS-ITS DUE APRIL 5TH, 2011!!! During a past epidemic, the number of infected people increased exponentially with time, or f (t) = ab^t , where f is the number of infected people at time t, in days. Suppose that at the onset of the

    asked by Lindsey on March 27, 2011
  99. Math

    An apprentice Carpenter has designed a wooden coffee table. he expects to sell 25 such tables for 95$ each at an upcoming artisan market. by conducting a survey, he determines that for each $2 reduction in the price of the table, he will likely gain three

    asked by lola on May 14, 2013
  100. algebra 1

    A manufacturer is cutting plastic sheets to make rectangles that are 11.125 inches by 7.625 inches. Each rectangle’s length and width must be within 0.005 inches. A. Plot the acceptable range of lengths on the number line that follows: B. Write an

    asked by mark on November 24, 2013