1. trig

    write an equation expressing 19cos(theta-50degrees) as a sum of sine and cosine.

    asked by Kate on November 6, 2011
  2. Maths

    What is the sum of all integer values of n satisfying 1≤n≤100, such that n2−1 is a product of exactly two distinct prime numbers?

    asked by Ian on March 28, 2013
  3. Math

    The sum of two opposite angles of a parallelogram is 130 degree. Find the measure of each of its angle.

    asked by Tapas on November 9, 2010
  4. algebra

    Show a complete algebraic solution for the following: find 4 consecutive multiples of 11 with the sum of 2178

    asked by Anna on February 17, 2010
  5. math

    write the sum. show the make-a-ten fact you used. 9 + 7 = ______________ 10 +____________=_______________

    asked by mary on November 9, 2010
  6. trig

    write equations expressing: 19cos(theta-50degrees) as a sum of sine and cosine.

    asked by Don on November 6, 2011
  7. MATH

    I NEED ASSISTANCE WITH THE ANSWER TO THIS PROBLEM....SHOW THAT EACH OF THE EVEN NUMBERS 6, 8, 10, AND 12 CAN BE WRITTEN AS THE SUM OF A GROUP OF TWOS.....

    asked by CONFUSED MOM on September 10, 2007
  8. Trigonometry

    Show algebraically how to confirm that cos2x=cos^2x-sin^2x using the sum and difference identities

    asked by Nikki on July 15, 2012
  9. maths

    Integers a, b, c, d and e satisfy 50

    asked by shiv on June 17, 2013
  10. Calculous

    Without using a calculator, find the sum of the series. Pretend in place of E is Greek Letter Sigma. 27 E(4 + 1/2n) = ? N=0

    asked by Leon on December 12, 2014
  11. Calculus

    Determine how many terms are required to approximate the sum of the series ((-1)^(n+1))/n^2 from n = 1 to inf with an error of less than 0.001.

    asked by Anonymous on March 15, 2018
  12. Geometry

    The measure of central angle YCZ is 80 degrees. What is the sum of the areas of the two shaded sectors?

    asked by Marcelo on November 16, 2016
  13. Math

    Explain how to find 14 x 19 by breaking apart the factors into tens and ones and finding the sum of the four partial products

    asked by Mia on December 9, 2010
  14. Maths

    Find the sum of the area of the ceiling and the floor of a room of 5m long, 4m wide and 2.5 high.

    asked by Sam on September 26, 2016
  15. math

    A sum of ₹400 amounts to ₹480 in 4 years.What will it amount to, if the rate of interest is increased by 2%p.a.?

    asked by Karan on February 7, 2016
  16. math

    Find the vector projection of u onto v. Then write u as the sum of two orthogonal​ vectors, one of which is proj (Subscript v)u.

    asked by Ivan on January 15, 2019
  17. math

    The third and fifth term of an arithmetic progression are 10 and-10 respectively. a)Determine the first and the common difference t3 = a + 2d = 10 t5 = a + 4d = -10 -a -2d = -10 a + 4d = -10 2d = -20 d = -10 a + 2(-10) = 10 a -20 = 10 a = 30; d = -2 b)The

    asked by kudu on February 8, 2015
  18. Math

    Express fraction 9/4 as the sum of two or three equal parts. Rewrite the problem as a multiplication equation.

    asked by Katherine on January 9, 2014
  19. math

    Estimate the sum to the nearest tens place 150+121+141+149=

    asked by kee on May 3, 2017
  20. Stats

    A class of 85 students writing an exam had a mean mark of 74.2 write down the total sum of the 85 grades.

    asked by Rachael on September 26, 2012
  21. physics

    For an object in equilibrium the sum of the torques acting on it vanishes only if each torque is calculated based on your:

    asked by Hector on February 25, 2012
  22. Math

    Use a left endpoint Riemann sum approximation with four subintervals to evaluate integral from 0 to 8 of g(x)dx These points were given: (0,-1) (1,-1.5) (2,-2.5) (3,-3) (4,-1.5) (6,-0.5) (7,-1) (8,-1.25

    asked by Mark on February 25, 2018
  23. alegebra 1

    the question is a diamond problem and it already gives you the sum of 24 on top and -11 on bottom can someone please help me? I would really appreciate it! ( please do not give me the answer just need some pointers)

    asked by haylee on September 3, 2014
  24. Math

    Is my answer correct? What is the probability of throwing a sum of 15 on three rolls of a fair die if the first roll was a 4? 1/36. Thanks.

    asked by B.B. on August 7, 2009
  25. Statistics

    If a pair of dice (one red; the other blue) are rolled, Find the probability of landing on a sum of 9

    asked by Kalee on April 25, 2015
  26. 3rd grade

    Use compatible numbers to complete this problem. Then estimate the sum. 3,428 +432 _____

    asked by amanda on September 9, 2010
  27. psychology

    For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation: 3.0, 3.4, 2.6, 3.3, 3.5, 3.2

    asked by mary sweazie on October 21, 2009
  28. math

    change the following statements into the algebraic expressions: four times the sum of x and 5= a)would it be 4x+5?? and how do i write 16 larger than the product of a and b

    asked by lori on May 22, 2008
  29. Maths

    Two no. are in the ratio 5:8. If the sum of the no. is 195.find the no. Ans is 75 nd 120 plz gve me sltn

    asked by Simran kaur on November 2, 2012
  30. Calc 2

    Consider the sequence: (a,sub(n))={1/n E(k=1 to n) 1/1+(k/n)} Show that the limit(as n-> infinity) A(sub(n))= ln 2 by interpreting a(sub(n)) as a Reimann Sum of a Definite Integral.

    asked by chelsea on April 14, 2014
  31. statistics

    For the following scores, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation 3.0, 3.4, 2.6, 3.3, 3.5, 3.2

    asked by Donna on August 14, 2011
  32. math

    Find three consecutive odd integers such that four times the middle integer is two more than the sum of the first and third. I think I'm doing it wrong. 4((x)+(x+2)=x+(x+4)+2 4(2x+4)=2+3x+6 8x+16=3x+8 5x=8 ? Please help

    asked by Anissa on March 6, 2017
  33. Business Math and Statistics

    If the interest rate is 3% and a total of $4,370.91 will be paid to you at the end of 3 years, what is the present value of that sum ?

    asked by India on September 12, 2012
  34. statics

    two dices are rolled find the probability that the sum is less than 6 and what is the answer rounded to 4 decimals places

    asked by bernie on July 29, 2016
  35. Algebra 2

    write an equation to solve the problem. find three consecutive even numbers whose sum is 144

    asked by Zach on December 16, 2014
  36. math

    In a certain right triangle, the lengths of the legs have a sum of 50 and a product of 282. What is the length of the hypothenuse? A. 44 B. 42 C. 40 D. 25squareroot2

    asked by hila on July 23, 2015
  37. math

    The sum required to earn a monthly interest of Rs.1200 at 18% per annum Simple Interset is:

    asked by Haroon Gondal on November 9, 2015
  38. Math

    One positive integer is three moee than twice another and their sum is greater than 65 but less than 75. What pairs of integers satisfy this conditions?

    asked by Raquel on February 14, 2016
  39. Maths

    A sum of rs400 amounts to rs480 in 4years. What will it amount to if the rate of interest is increased by 2% p.a

    asked by S on October 23, 2017
  40. math

    esimate each sum or difference by rounding to the place value indicated. 37,097 - 20,364 ten thousand

    asked by shion on August 28, 2012
  41. algebra

    Write an algebraic equation for the English statement "Add 5 to the sum of 2 times x and the result is 21."

    asked by jo on July 27, 2008
  42. Math

    One positive integer is three moee than twice another and their sum is greater than 65 but less than 75. What pairs of integers satisfy this conditions?

    asked by Raquel on February 15, 2016
  43. Math

    After deducting10% from sum and then 20% from the remainder₹3600 are left.Find original amount.Solution

    asked by Prateek on June 8, 2017
  44. Math

    The sum of four consecutiv multipl of 4 is 120.find these multipls. Plz gve me sltn

    asked by Simran kaur on November 7, 2012
  45. math

    find the sum of interoir angles of a anagon 140 1620*** 1260 1450

    asked by bogger on March 27, 2017
  46. math

    The 4th term of an Ap is 6. if the sum of the 8th and 9th terms is -72,find the common difference

    asked by Bello Boluwatife on November 8, 2015
  47. geometry

    prove that The sum of the angles in any triangle is 180 degrees is true in Euclidian geometry.

    asked by denise on February 26, 2013
  48. math

    In how many years time will a sum of money quintuple at a rate of 4% per annum compounded quarterly?

    asked by farahan on November 15, 2015
  49. math

    If a trees 93 feet tall cast a shade of 26 degrees what is the angel of evaluation of the sum

    asked by Anonymous on May 5, 2013
  50. math

    If a trees 93 feet tall cast a shade of 26 degrees what is the angel of evaluation of the sum

    asked by Anonymous on May 5, 2013
  51. Pre-Calc

    Find the exact value of sin345 degrees using a sum or difference formula. I got (-sqrt6 + sqrt2)/4. Is this right?

    asked by Anonymous on January 20, 2016
  52. maths - statistics

    find the mode of the fdllowing data class - 0-20 20-40 40-60 60-80 frequency -15 6 18 10 plz explain this sum thank you

    asked by chinnu on July 21, 2011
  53. pre-calculus

    use a sum or difference formula to find the exact of the trigonometric function cos(-13pi/12)

    asked by lina on April 3, 2012
  54. statistics

    can someone please tell me what the equation is to find the sum of squares...im looking online but everything is sohard to understand and all the symbols are confusing...?? thank you!

    asked by steph on May 8, 2008
  55. Maths

    Construct a triangle ABC IN WHICH BC= 5.5 CM ,ANGLE B=60DEGREE AND SUM OF OTHERtwo SIDEs is 8.6cm

    asked by Sebi on January 23, 2017
  56. maths lit

    Calculate the simple interest and the sum accumulated for R5000 borrowed for 90 days at 15% per annum

    asked by matiwane on June 16, 2017
  57. Math

    why is it possible to find the sum of the angle measures of an n-gon using the formula (180n-360) *degrees*

    asked by Amanda on December 2, 2010
  58. computer programming

    given three numbers A,B,C. draw a flowchart to compute and print out the sum, average and the product of these values.

    asked by joren on April 21, 2016
  59. math

    calculate the infinite sum of a geometric series with first term 15,000 and common ratio by (1-1/10)

    asked by john on December 6, 2010
  60. Algebra

    What is the positive difference in the sum of the letters in the words MATH and COUNTS, if each letter is assigned a value as follows: A=1, B=-2, C=3, D=-4,..., Y=25, Z=-26?

    asked by Matt on April 4, 2011
  61. math

    Which numerical expression correctly translates the phrases 4 less than the sum of 9 and 2 ? 9 + 2-4, 9-4+2, 4- ( 9+ 2 ) , 4- 9 + 2 the correct answer I chose is 4-(9 +2) is that right. Thank you

    asked by Johnnie on April 25, 2018
  62. Stats

    The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience. Admissions Probability 1,080 0.5 1,340 0.2 1,660 0.3

    asked by Nicole on September 28, 2010
  63. math

    At a football game, a vender sold a combined total 210 of sodas and hot dogs. The number of sodas sold was 44 more than the number of hot dogs sold. Find the number of sodas sold and the number of hot dogs sold.

    asked by lisa on March 8, 2013
  64. math

    Organizer of school graduation does have three sections of chairs. 1120 chairs are arranged for graduates, 1400 for invited guests and 896 for lecturers. If all rows have same number of chairs, calculate the greatest number of chairs in each row if no

    asked by vizzy on February 26, 2015
  65. math

    1. The largest of five consecutive integers is twice the smallest. Find the smallest integer. 2. When the sum of three consecutive integers is divided by 9 the result is 7. Find the three integers. 3. If each of three consecutive integers is divided by 3,

    asked by rita on July 14, 2013
  66. Maths

    the ratio of the number of boys to the number of girls in a class is 4:7. if there are 12 more girls than boys, find the total number of pupils in the class.

    asked by Sarah on September 24, 2014
  67. math

    Write the base 10 number 945 s a base 6 number and as a base 12 number. then, using these numbers as base 10 numbers, find the positive difference between them.

    asked by Brenda on January 11, 2011
  68. Chemistry (Check)

    Q: Number of unpaired electrons in the nitrogen atom. A: 1s^2 2s^2 2p^6. 3 unpaired electrons in the p orbital Q: Number of 4d orbitals. A: 10 Q: Maximum number of electrons that can have n=3 and l=1. A: 1s^2 2s^2 2p^6 3s^2 3p^6. 2 electrons

    asked by Anonymous on September 13, 2015
  69. math

    The difference between two numbers is 33. If three times, the larger number is subtracted from six times the smaller number, the difference is 18. Find the smaller number.

    asked by Anonymous on April 15, 2016
  70. Math

    You spin the spinner once (1-6) and roll a number cube (1-6) once. Find the probability that the spinner stops on the same number that you roll with the number cube.

    asked by Doey on January 7, 2017
  71. Probability

    A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number less than 3. Find the probability of not rolling a number less than 3 A. 1/3;2/3 B. 1/2;1/2 C. 5/6;1/2 D.1/6;5/6

    asked by to school on May 14, 2018
  72. Algebra 2

    For the period 1990-2002, the number s (in thousands)lf cellular telephone subscribers in the United States can be modified by S=858t^2 + 1412t + 4982 where t is the number of years since 1990. In what year did the number of subscribers reach 50 million?

    asked by Krystal on September 24, 2013
  73. Math,Ratio

    the ratio of the number of coins Azam had to the number of coins Eddie had was 3:7.Eddie gave 42 coins to Azam and they ended up having the same number of coins.how many coins did each person have at first? pls show ur answer purely!

    asked by Da S on February 3, 2012
  74. algebra 2

    the number N of aluminum cans used each year varies directly as the number of people P using the cans if 55 people use 13,805 cans in one year how many cans are used in a cith which has a population of 1,469,000 what is the number of cans used.

    asked by kay on March 24, 2012
  75. math

    the library has a total collection of 2630 books. the number of non-fiction books is 240 fewer than the number of fiction books but 190 more than the number of picture books. how many books of each type are there in the library?

    asked by shohanur on March 30, 2013
  76. math

    the library has a total collection of 2630 books. the number of non-fiction books is 240 fewer than the number of fiction books but 190 more than the number of picture books. how many books of each type are there in the library?

    asked by shohanur on March 30, 2013
  77. math

    the library has a total collection of 2630 books. the number of non-fiction books is 240 fewer than the number of fiction books but 190 more than the number of picture books. how many books of each type are there in the library?

    asked by shohanur on March 30, 2013
  78. math

    help with solving a magic square http://www.jiskha.com/display.cgi?id=1125461237.1125498843 MAGIC SQUARES Magic squares, those seemingly innocent looking collections of numbers that have fascinated so many for centuries, were known to the ancients, and

    asked by nicholas on June 5, 2007
  79. computer code

    Create a Flowchart and pseudocode. Create a class whose main method creates three arrays. The first array will contain five kinds of flowers - petunia, pansy, rose, violet, and carnation. The second array will contain the cost of each flower, respectively,

    asked by Wayne on March 21, 2015
  80. Living environment

    The apperance of the greatest percentageof white mice occured (1) before the maximum number of days of snow cover (2)at the same time as the maximum number of days of snow cover (3) after the maximum number of days of snow cover (4) both before and after

    asked by lisa on January 3, 2012
  81. math

    the number of blocks has 9 in the ones place. the number in the hundreds place is one more than the number in the tens place. those two numbers equal 11. how many blocks are there?

    asked by anthony on January 18, 2017
  82. math

    The number of blocks has 9 in the ones place the number in the hundred place is one more than the number in the tens place those two numbers equal 11 how many blocks are there?

    asked by Anonymous on December 14, 2016
  83. Math

    The number 0f blocks has 9 in the one's place the number in the hundres place is one more than the number in the tens place those two numbers equal 11 how many blocks are there

    asked by Mike on January 26, 2017
  84. Math

    The number of blocks has 9 in the ones place. The number in the hundreds place is one more than the number in the tens place. Those two numbers equal 11. How many blocks are there?

    asked by Vincent on November 5, 2017
  85. Math

    the number of blocks has 9 in the ones place. The number in the hundreds place is one more than the number in the tens place. Those two numbers equal 11. how many blocks are there.

    asked by Roger on December 7, 2015
  86. Math

    The number of blocks has 9 in the ones place.The number in the hundreds place is one more than the number in the tens place.Those two numbers equal 11.How many blocks are there?

    asked by Deron on September 13, 2016
  87. math

    The number of blocks has 9 in the ones place. The number in the hundreds place is one more than the number in the tens place. Those two numbers equal 11.how many blocks are there?

    asked by myah on January 19, 2016
  88. algebra

    1. 8 less than a number is 15. find the number. 2. a number less than 8 is 15. find the number. 3. 5 times a number is 45. find the number

    asked by Peter on February 8, 2009
  89. Trigonometry

    The number of hours of daylight in a city in the northern hemisphere shows periodic behavior over time. - The average number of daylight hours is 12 - The maximum number of daylight hours is 14.4 - The period is 365 days - The day with the least sunlight

    asked by Max on March 2, 2018
  90. math

    On a class trip there wre 30 more girls than boys.The total number of students on the trip was 210.Write and solve an equation to find the number of girls and the number of boys on the class trip.

    asked by ashley on January 28, 2014
  91. math

    the track cpach records the number of laps the team runs each day fr a week in the table below. if the team rus at most 10 laps each day, then they have to practice saturday. use the inequalty l is less than of equal to where l represents the number of

    asked by spartans on February 16, 2015
  92. algebra

    Some people are guessing the number of jelly beans in a jar. Each person who guesses within 15 of the correct number will win a prize. The correct number of jelly beans is 389. What values of n represent the numbers that will win a prize

    asked by Anonymous on February 19, 2019
  93. science

    what is the charge on a copper nucleus The atomic number is the number of protons in the nucleus and protons have a charge of +1. What is the atomic number of copper? Look on the periodic table. If you don't have one at home, here is one on the web.

    asked by vannesa on October 25, 2006
  94. Algebra median

    So I don't know how to do this. I know how to find the median of numbers. But I have a picture it's like a number line with dots on top of the number. What is the median life expectancy below? What is the range of life expectancy below? Number line

    asked by Stacy on September 12, 2018
  95. chemistry

    Tantalum metal is produced by reaction of potassium heptafluorotantalate (K2TaF7) with elemental sodium (Na) in a reactor heated to 850oC. The by-products are potassium fluoride (KF) and sodium fluoride (NaF). The reactor is charged with 244.0 kg of K2TaF7

    asked by schoolgirl on March 24, 2013
  96. chemistryI

    If 2 protons and 2 neutrons are ejected from a radium nucleus with atomic number 88 and mass number 226 which element will be the result? Could someone please tell me how to work this out. Thanks. The atomic number is the count of protons...so if two are

    asked by laura on March 15, 2007
  97. math (word problem) last one

    The equation y=-1777x+27,152 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is x=0 corresponds to 2000, x=3 corresponds to 2003, x=4 corresponds to 2004 and so on. Predict the number of gun deaths in 2004 and

    asked by scooby on November 6, 2009
  98. math algebra

    The equation y=-1777x+27,152 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is x=0 corresponds to 2000, x=3 corresponds to 2003, x=4 corresponds to 2004 and so on. Predict the number of gun deaths in 2004 and

    asked by scooby on November 6, 2009
  99. Probability

    1. The chart below shows the possible options for pants, shirts, and shoes in Tom’s closet. Which tree diagram correctly shows the possible outfits he can wear? Pants- jeans(j) khakis(k) Shirts- yellow(y) blue(b) checked(c) Shoes- sneakers(s) hiking

    asked by Connexus on May 14, 2018
  100. Statistics

    A quiz consists of 10 multiple choice questions. Each question is marked either “right” or “wrong.” Each right answer gets 5 points, and 1 point is taken off for each wrong answer. The correlation between the number of right answers and the number

    asked by Emily on March 15, 2013