1. math

    ab+cd=34 ac+bd=38 ad+bc=43 what is a+b+c+d=? multiple choice: a)15 b)16 c)17 d)18 e)19 First, I tried guessing and testing, but couldn't find the correct answer. Then I tried isolating a a=(34-cd)/b I'm stuck, there are too many variables

    asked by sh on February 20, 2009
  2. 7th grade

    I am trying to unscramble ecrfenine in my science homework and cannot get an answer. My mom has read the whole chapter as well with me and we cannot find it. It has to do with scientific method.

    asked by kaitlyn on August 19, 2010
  3. Math/Trig

    Find the area of the sector, given a central angle of 55degrees and a radius of 5.7 in. Round your answer to the nearest tenth.

    asked by CJ on January 16, 2011
  4. math

    b.Use your new formula to find the mass of the automobile in kg for each value of force and time given in the table below. Round your answer to the nearest whole number

    asked by star on August 26, 2010
  5. math

    A and B are events defined on a sample space, with the given probabilities. Find P(A and B). (Give your answer correct to two decimal places.) P(A | B) = 0.43 and P(B) = 0.75

    asked by DeeDee on May 28, 2013
  6. 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 31, 2008
  7. Algebra II

    Find the exact solutions to 6x^2+x+4=0 by using the quadratic formula. x=-b+-sqrtb^2-4ac/2a -1+-sqrt1^2-4(6)(4)/2(6) -1+-sqrt-95/12 -1-95/12 -96/12 x= -8 -1+95/12 94/12= 7.8333.. [-8, 7.83](answer)

    asked by Jon on March 2, 2008
  8. history

    Analyze the role the Quran played on Islamic art and architecture in the Muslim world. please help I can't find that answer anywhere.

    asked by hotdognibba70 on December 22, 2017
  9. Math

    You roll a number cube twice. Find P(even, then not 2). Write the probability as a fraction in simplest form. Explain your answer. Please help!

    asked by Carrot on June 7, 2017
  10. Social Studies

    what region has the workforce to support a new industry I need help asap please help anyone I don't want the answer I just want a link I cant find a good website

    asked by Reata on February 10, 2017
  11. math

    Find the volume of a rectangular box having width 4.0 ft, length 6.074 ft, and height 8.721 ft. Answer is 211.89 ft

    asked by Sam on March 17, 2016
  12. physics

    A car accelerates uniformly from rest to a speed of 21.5 km/h in 6.9 s. Find the distance it travels during this time. Answer in units of m

    asked by sophia on September 12, 2013
  13. Trigonometry

    Find all solutions of the equation in the interval [0,2pi). sec(theta)+2=0 Write your answer in radians in terms of pi

    asked by Pascal on March 25, 2014
  14. Algebra

    Find the perminter of the rectangle 9inches on top 3 inches on side. How do i set up the equation? Nevermind I got the answer

    asked by Rizzle on June 28, 2007
  15. Algebra I Math

    Find the average rate of change from x = 10 to x =17 for the function f(x) = 0.01(2) ^x and select the correct answer below A. 10.24 B. 185.78 C. 1300.48 D. 1310.72 Is it C?

    asked by Help me please, urgent on December 8, 2015
  16. Math

    If I have a triangle and they are asking me to find the perimeter of DEF when EF is 16cm and DE is 12cm would I add those two numbers then subtract 180 from that answer?

    asked by Anonymous on May 9, 2013
  17. geometry

    Find the surface area of a cone with a slant height of 11 and a radius of 15. Use 3.14 for ð. Round your answer to the nearest tenth.

    asked by Anonymous on December 30, 2013
  18. Math

    Use the value sin x = 1/ 2 and cos x > 0 to find the values of all six trigonometric functions. Leave your answer in exact form, not in decimal

    asked by Katie on July 10, 2016
  19. 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
  20. math

    Find the derivative of the function y = sqrt of s^11 + 1 the entire thing is under the square root and and 1 is not in the exponent. Is the answer 1/2 (s^11 +1)^-1/2(11s^10)?

    asked by JJ on April 17, 2012
  21. geometry

    the arc length of AB is 2^pi ft. find the radius of the circle ABC=43 degree. round your answer to the nearest hundredth.

    asked by Nancy on June 25, 2012
  22. math

    Find the distance between the two points. Round an approximate result to the nearest hundredth. (-1, -1) and (3, -7) A) 7.21 B) 26 C) 6.93 D) 24 i don't know if i am doing something wrong but i keep getting the answer of 2

    asked by JEN on November 18, 2009
  23. Algebra

    I need some help with algebra I'm not sure how to get to the answer. Find the number of terms in each sequence. 1. a1=4 an=42 d=2 2. a1--0.3 an=-36 d=2.1 3. 1/12, 1/8, 1/6, 5/24, 1/4,......9/8 Evaluate each sum. 1. There is an e like symbol that has a 15

    asked by Jenny on April 8, 2013
  24. Calculus

    Find the limit as x approaches infinity. sqrt(81x^2 + x)− 9x. I've worked this two different ways and have gotten 0 and 1/9, neither of which is the right answer according to the homework system??

    asked by kelly on September 14, 2015
  25. science

    do you where i can find a answer sheet to chapter 9 weathering and erosion? because i really want to ace the next test and i don't know the right answers to it thnx

    asked by kayla on November 17, 2010
  26. Trigonometry

    How do I find all solutions in the interval [0,2Pi): sin2x=cos2x answer choices are: a.)Pi/8 b.) Pi/8, 5Pi/8, 9Pi/8, 13Pi/8

    asked by Grace on January 2, 2010
  27. math

    Find the area of the segment of the circle. Leave your answer in terms of pi. there is a 90 degree angle and the sides measure is 3

    asked by Izzy on May 5, 2013
  28. MATH

    find the area of a regular hexagon with an apothem of 9cm.give answer in simplified radical form?

    asked by bre on April 30, 2009
  29. algebra 1

    Find the x and y intercept of this equation: 10x-70y=210 I keep getting the wrong answer. Can you show me how to set it up and work it out?

    asked by Brainiac on October 2, 2014
  30. History Help!

    What arguments did supporters of the public school movement make to support their cause? can you help me find some sources to search up this answer..??

    asked by Angela on February 25, 2014
  31. Trig

    Find all solutions of the equation in the interval [0,2pi). 2sin theta+1=0. Write answer in radians in terms of pi.

    asked by James on August 20, 2015
  32. geometry

    2004-06-01-04-00_files/i0320000.jpg Find the volume of the cone. Round your answer to the nearest hundredth.

    asked by allison on March 25, 2016
  33. Math Check

    Find the volume when the solid has a base of the x-axis and a semi-circle of y=sqrt(25-x^2). My answer is 500/3. Is that correct?

    asked by Susie on April 29, 2016
  34. cal

    Finding Partial Derivatives Implicitly. Find dz/dx and dz/dy for 3x^(2)z-x^(2)y^(2)+2z^(3)+3yz-5=0 How would you type this in wolfram alpha calcultor to get the answer? Thanks,

    asked by jay on March 15, 2014
  35. Math/Statistics

    A and B are events defined on a sample space, with the given probabilities. Find P(A and B). (Give your answer correct to two decimal places.) P(A | B) = 0.43 and P(B) = 0.75

    asked by Nora on May 30, 2013
  36. Physical Science, Science

    The barometric pressure in Breckenridge, Colorado (elevation 9600 feet) is 580 mm Hg. How many atmospheres is this? How do we find the answer for this?

    asked by Apple on August 25, 2017
  37. math

    Find the area of the regular polygon. Round your answer to the nearest tenth. the individual sides are 10 the radius is 13.07

    asked by rebecca on May 5, 2013
  38. Math Trig

    I can't seem to get the right answer on my assignment. I keep on getting 276.403 and seem to get it wrong. Please help. Suppose that cot(θ)=−8.91 and 0∘≤θ

    asked by Felix on May 29, 2017
  39. geography (Ms. Sue)

    Can you suggest a site where I can find this answer? I do not have my book at home tonight. I need to name at least three items a map's key should include.

    asked by Reed on October 10, 2011
  40. Science fair

    I'm desperately looking for sites that have sample science fair projects in the engineering field. If somehow you could find it in your hearts to help me answer me. Please!

    asked by Loui on October 23, 2007
  41. geomerty

    Find the area of the regular polygon. Round your answer to the nearest tenth. the individual sides are 10 the radius is 13.07

    asked by sarah on May 5, 2013
  42. maths

    Find the coordinates of the points of intersection of the straight line y = 3x - 6 with the parabola y = x^2 - 6x + 8. a) Graphically b)Prove your answer in (a) algebraically

    asked by Shane on May 2, 2014
  43. geometry

    Find the length of arc AC if the diameter, AB, of circle O is 36 cm. Write answer in terms of pi. Show your work for credit.

    asked by monkey on August 11, 2009
  44. Science

    Use the terms atom and element to explain what makes silver and gold different. I've looked online but can not find an answer. Please help and thanks.

    asked by Carlos PLEASE HELP ME on October 27, 2011
  45. Math

    Jim has $87. He spends $6 for socks and at least $32 for shoes. How much does he have left to spend on shirts? I know the answer is >49 I need to find the inequality equation. Thank you

    asked by Rachel on September 28, 2016
  46. statistics

    Two dice are rolled, find the probability that the sum is less than 6 (Leave your answer as a number between 0 and 1. Round to 4 decimal places).

    asked by Tim on September 28, 2016
  47. Math

    How would I find the smallest three digit number that is divisible by exactly three different prime numbers? My friend says the answer is 2 - 3 - 17 but won't tell me how he got it. Any help would be much appreciated. Thank You.

    asked by Kyle on August 9, 2015
  48. Algebra 2

    Find all the values of j such that the quadratic equation 5x^2+x+4j=0 has no real solutions. Write your answer as an equality or inequality in terms of j.

    asked by Lexie on August 16, 2009
  49. precalculus

    can you check my work I really do not understand. Find the standard form of the equation of the parabola with focus(8,-2) and directrix x=4. answer= (y+2)^2=-16(x-12/8)

    asked by Anonymous on December 12, 2016
  50. Algebra 1

    A boat travels 36 miles in 60 minutes. Find the unit rate. Round you answer to the nearest thousandth if necessary.

    asked by Anonymous on October 8, 2013
  51. social studies

    I have read through my text book for school but can not find the answer to my question. can someone please explain to me why Christianity was appealing to so many Romans?

    asked by A person on May 15, 2014
  52. geometry

    The measure of a single angle in a regular octagon is (4x + 12)°. Find the value of x. Show equations and all work that leads to your answer.

    asked by Anonymous on March 18, 2011
  53. pre-calc

    Find the area of a triangle with sides of length 5 and 8 and included angle 74°. (Round your answer to one decimal place.)

    asked by Kelvin on March 24, 2012
  54. AP US History

    I cannot find this answer anywhere! What is an important Mississippian culture site that is near present-day east St. Louis, Illinois?

    asked by Cassidy on August 18, 2009
  55. geometry

    Answer has to be in exact form.Find the area of a segment formed by a chord 8" long in a circle with radius of 8".

    asked by dana on January 15, 2012
  56. Calculus

    find area of the region bounded by the curves y=x^2-1 and y=cos(x). give your answer correct to 2 decimal places.

    asked by joe9 on April 27, 2015
  57. geometry

    Answer has to be in exact form. Find the area of the region between a regular hexagon with sides of 6" and its inscribed circle.

    asked by dana on January 15, 2012
  58. Algebra

    Find all complex numbers z such that z^2=2i. Write your solutions in form, separated by commas. So, "1+2i, 3-i" is an acceptable answer format, but "2i+1; -i+3" is not. Thank you!

    asked by Trish Goal on October 23, 2014
  59. Physics

    A car accelerates uniformly from rest to a speed of 23.9 km/h in 8.2 s. Find the distance it travels during this time. Answer in units of m

    asked by Jason on October 2, 2013
  60. Math-Trig

    Answer to four significant figures, or to the nearest minute. f) one vertex angle of a rhombus is 25°. Find the ratio of the diagonals.

    asked by Jessica on April 19, 2016
  61. physiology

    what are the parts of the cerebrum the receive and interpret somatic senory signals? I have searched my ext just cant find the answer.

    asked by lulu78 on April 23, 2011
  62. physics

    A car accelerates uniformly from rest to a speed of 24.3 km/h in 5.8 s. Find the distance it travels during this time. Answer in units of m

    asked by neko alice on September 23, 2012
  63. Math

    Find the cost of each item in 5 years, assuming an inflation rate of 8%. (Round each answer to the nearest cent.)

    asked by Soraya on November 28, 2016
  64. Calculus

    The region between the graphs of x=y^2 and x=6y is rotated around the line y=6. Find the volume of the resulting solid please... i am unable to get the correct answer :(

    asked by Adam on October 23, 2010
  65. Physics-Gauss' Law, hard

    Thank you Damon for answering my first questions fast and accurately. Do you or anybody else know how to do these harder Gauss' Law Problems? 1. A solid metal sphere of radius R has charge +2Q. A hollow spherical shell of radius 3R placed concentric with

    asked by Bobby on March 23, 2008
  66. statistics

    1. The new Twinkle bulb has a standard deviation σ = 34 hours. A random sample of 77 light bulbs is selected from inventory. The sample mean was found to be x= 492 hours. Question: Find the margin of error E for a 90% confidence interval. Round your

    asked by looking for someone to varify my work please on April 6, 2010
  67. Chemistry

    Can you please someone check my answer for me? I don't know how to start thses answer. Chemistry is not my things. Please give me answers. :( a)Determine the number of grams in 0.750 moles of the compound Iron(II)phosphate: Fe3(PO4)2. answer: 129.68grams

    asked by Anonymous on April 1, 2010
  68. medical terminology

    I'm taking the medical terminology course and I'm at the part of the course that is working with ICD 9 CM codes. I'm in Chapter 2 of the Medical & Dental Associates, P.C. Insurance Forms Preparation work book and now I'm trying to do the exercises but I

    asked by gabby on January 17, 2011
  69. Math

    So this is a math quiz I took a few months ago and they said I can redo it, but I have to explain why the correct answer is correct... And idk. Which equation represents 15 more than r is 61? The answer is r + 15 = 61 but idk why? What is the value of 4^2

    asked by Megan on December 16, 2015
  70. physics

    A newly established colony on the Moon launches a capsule vertically with an initial speed of 1.453 km/s. Ignoring the rotation of the Moon, what is the maximum height reached by the capsule? km The answer key is 1040km. I have tried v^2/2g

    asked by joy on March 9, 2018
  71. math

    *This is orders of magnitude* 1)So, I have to estimate 16,700,000,000,000,000 the product of a single digit of 10. - 2 x 10^16 - 2 x 10^15 *my answer* - 1 x 10^16 - 1 x 10^15 2)0.00000394 estimated as the product of a single digit. ____ x 10____ *fill in

    asked by Anonymous on September 10, 2014
  72. science!

    i have 6 questions, each with an answer. i would appreciate if you review the questions check my answers. tank you very much tutors. variables and graphing assessment practice Ethylene is a plant hormone that causes the fruit to mature. The data below

    asked by anon on September 10, 2015
  73. Math - Please Help Check My Answer

    Please help me with the following question: A student attempts to solve for c in the equation below. Which statement best applies to the work shown below? 3c + 6 - 4c - 12c = 7 -13c + 6 = 7 -13c + 6 + (-6) = 7 + (-6) -13c = 1 c = -1/13 A. The student

    asked by Brady on October 22, 2014
  74. Math 156

    1)Suppose you buy 1 ticket for $1 out of a lottery of 3000 tickets. If the prize for the one winning ticket is to be $500, what are your expected winnings? I'm assuming the answer for this one is $0.00 2)A basketball player with a free throw shooting

    asked by jessica on August 7, 2009
  75. @ elena - intro to physics

    I posted this question earlier and thank you for respnding, but the answer you give me was incorrect. I try looking at hw you solve and cant find the mistake but when when I check your answer it said it was wrong. Can you please look over it again, I

    asked by emilia on April 15, 2012
  76. Algebra

    Question 1 Solve using the multiplication principle then graph. -15>-75 Question 2 Translate to an equality. Use the variable x. The number of people in the chess clubi less than or equal to 15. Question 3 Solve using the addition and multiplication

    asked by Queen D on March 7, 2010
  77. pre calculus

    1.) If h(x)= (fog)(x) and h(x) = 3 over the square root of x+3 , find g(x) if f(x)= 3 over the square root of x+2. my answer is x+1. Am I right? 2.)If f(x)=3x,g(x)=x-3,and h(x)= the square root of x, find (fogox)(X). I really didn't get this will someone

    asked by Leo on April 6, 2013
  78. Algebra

    1. What is the equation for the line that passes through the point (-5,2) and has a slope of 0? Answer-2 2. What is the slope of the line that passes through the points (-2, 4, 15) and (1, 1.24)? Answer- -2.91 3. Write a funciton rule for the table shown x

    asked by lizzie on August 7, 2011
  79. Math

    Write the algebraic expressions for the following. Please check and correct me if I'm wrong!! 1. 3 less than 5 times a number. Answer: 5x-3 2. 18 fewer than half a number. Answer: 1/2x-18 3. 3 more than the quotient of a number and 2. Answer: x/2+3 4. 4

    asked by Anonymous on August 31, 2014
  80. Earth Science

    Seismic waves move faster through which of the following media? a.) water b.) steel c.) oxygen d.) oil Please answer my study guide is due Monday and the teacher hasn't gone over this I looked through my notes and everything. It would really help if you

    asked by ? on January 13, 2013
  81. math

    sums and differences of rational algebraic expression answer the following perform the indicated operation reduce answers to lowest term 2x/x^2-2x-15 - x-2/3x^2+9 another is t/2rs^2 - 2r/3rst + 3s/30r^2t another is 3x/2x-3 - 2x/2x+3 + 3/4x^2-9 please

    asked by jazmin on October 8, 2010
  82. Math (calculus) (mean values)

    A company introduces a new product for which the number of units sold S is given by the equation below, where t is the time in months. s(t)=155(7-9/(2+t)) a) Find the average rate of change of s(t) during the first year. Which my answer was 1395/28 b)

    asked by Ray on November 27, 2016
  83. Math

    The points (4, –5) and (– 4, 1) are endpoints of a diameter of a circle. (a) Find the center of the circle. (b) Find the length of the radius of the circle. (Note that this is a distance.) Give the exact answer. Show work. (c) State the equation of the

    asked by Kate on June 24, 2009
  84. Math

    Anne now has a balance of $900 on her credit card, on which 1.5% interest per month is charged. Assume that she makes no further purchases or payments (and that the credit card company doesn't turn her account over to a bill collector). (a) Find the rule

    asked by Anonymous on November 6, 2010
  85. Physic

    You hold a uniform, 26.0-g pen horizontal with your thumb pushing down on one end and your index finger pushing upward 3.2 cm from your thumb. The pen is 13.9 cm long. Find the two forces. Force of Finger (Answer: 0.553N) Force of Thumb (Answer: 0.299N)

    asked by Anonymous on May 1, 2014
  86. algebra PLEASE HELP ASAP

    1. the probability of a basketball player hitting a foul shot is 1/3. how many shots would you expect her to make in 90 attempts. a. 30 b. 60 c. 3 d. 45 my answer is b? 2. simplify 8P3. a. 42 b. 336 c. 40,432 d. 56 my answer is d? 3. how many ways can 4

    asked by Anon on May 3, 2016
  87. math

    The length of a rectangle is 10 feet more than twice its width. The perimeter of the rectangle is 170 feet. Find the dimensions of the rectangle. ANS: Length= 60 feet, Width= 25 feet I already know the answer, its in my review sheet. If someone can explain

    asked by shelly on November 29, 2007
  88. calculus

    A firework is launched at the rate of 10 feet per second from a point on the ground 50 feet from an observer. To 2 decimal places in radians per second, find the rate of change of the angle of elevation when the firework is 40 feet above the ground. Type

    asked by emma on April 21, 2015
  89. statistics

    The new Twinkle bulb is being developed to last more than 1000 hours. A random sample of 100 of these new bulbs is selected from the production line. It was found that 48 lasted more than 1000 hours. Find the point estimate for the population proportion,

    asked by looking for someone to varify my work please on April 6, 2010
  90. pre-calculus

    R(x)=x^2+x-6 ________ x-3 1. find the domain and y-intercepts 2. find the x-intercepts 3. find the real solution of the equation 4. find the horizontal or oblique asymptotes 5. find the x-axis 6. plot the points

    asked by ladybug on September 30, 2012
  91. Physics

    A uniform magnetic field points north; its magnitude is 3.5 T. A proton with kinetic energy 6.0 × 10-13 J is moving vertically downward in this field. What is the magnetic force acting on it? This is what I've done. The answer is incorrect. Please help me

    asked by Sar on September 23, 2010
  92. Magnetic Field Forces: Physics

    A uniform magnetic field points north; its magnitude is 3.5 T. A proton with kinetic energy 6.0 × 10-13 J is moving vertically downward in this field. What is the magnetic force acting on it? This is what I've done. The answer is incorrect. Please help me

    asked by Sar on September 22, 2010
  93. Precalculus

    Suppose that the point (rho, theta, phi)= (12, 2pi/3, 5pi/4) in spherical coordinates can be expressed as (x, y, z) in rectangular coordinates. Find x+z. I first found x by using the conversion method (r*sin(theta)cos(phi)= x ) I got -3(sqrt(6)). Then I

    asked by Aditya on August 8, 2014
  94. statistics

    A group of applicants for a position consists of 8 people who are qualified and 7 whoa are not. If we select two people at random to be interviewed (obviously without replacement), find the probability that we get: a. two qualified people b. one qualified

    asked by stats-help on January 24, 2008
  95. General Physics II

    Hi, this is about thin film interference in ray optics. My book presents two similar problems, but somehow uses different paths for the same variable. I'll list out the given variables: --Problem A-- n1 < nf > n2, delta phase is therefore lambda over two.

    asked by Justin on December 5, 2016
  96. Physics

    *I am lost on a bunch of different problems, and this is one of them. Please note that I am NOT asking for final answers, just some guidance so that I can figure out how to do the problem!!! I know that a lot of times on this site it is commented that we

    asked by Justin on October 8, 2006
  97. math

    An initial-value problem is given by the differential equation, f(x,y) = x + y, y(0) = 1.64 The Euler-midpoint method is used to find an approximate value to y(0.1) with a step size of h = 0.1. Then use the integrating factor method, to find the exact

    asked by enigma on September 26, 2012
  98. Math

    I have a 3 part question that I have the answers for but I am still having issues understanding it. Looking for help with the explanation / steps on how you would get the answer. Question 1) The width of a rectangular field is 3h yards and it's length is 3

    asked by Dee on December 7, 2017
  99. French

    Could you please check these thanks. Directions complete each sentence with the form à (such as au, aux ect.) or de. 1. En Franch, un garçon, de treize ans va --------- collège. Answer: au 2. Et une fille qui a seize ans va ---------- lycée. Answer: au

    asked by French gurl on March 2, 2009