1. Physics

    A 32-u oxygen molecule (O2) moving in the +x direction at 580 m/s collides with an oxygen atom (mass 16 u) moving at 870 m/s at 27 degrees to the x axis. The particles stick together to form an ozone molecule. Find the velocity of the ozone. Express your

    asked by Jacob on April 13, 2009
  2. Some algebra please help me!

    1) Find the surface area of a sphere with a radius of 8 cm. A 267.9 cm B 803.8 cm *** C 2143.6 cm D 2010. cm 2) Find the surface area of a sphere with a radius of 4 ft. A 452.2 m B 150.7 m C 113.0 m D 904.3 m *** 3) Find the volume of a sphere with a

    asked by Edward Elric on March 5, 2018
  3. college algebra

    f(x)=x^2-4x+3 find (-2) my answer to this was 7 I believe the correct answer is -4 is this correct

    asked by John on April 23, 2010
  4. math, correction

    Find the LCM for 4 and 20 My answer is: LCM IS 20 Your answer is right

    asked by jasmine20 on February 13, 2007
  5. college algebra

    Part a 3x + 4y = 8 for y answer is -4 Using your answer from part a, find the corresponding value of y when x =8.

    asked by tondra on November 16, 2008
  6. MATH

    Hello! I am trying to finish a math assignment. it was a bunch of math questions, and I am having a very difficult time with 5 of them. I have the answers to them though. Could somebody please help me with AT LEAST a few!? thanks!! 1) A square swimming

    asked by Josh on March 20, 2011
  7. MATH

    Hello! I am trying to finish a math assignment. it was a bunch of math questions, and I am having a very difficult time with 5 of them. I have the answers to them though. Could somebody please help me with AT LEAST a few!? thanks!! 1) A square swimming

    asked by Josh on March 20, 2011
  8. Calculus

    Using 3(x-3)(x^2-6x+23)^1/2, as the chain rule differentiation of f(x)=(x^2-6x+23). Please explain how I find the general solution to the differential equation dy/dx= 2/27(x-3)SQUARE ROOT BEGINS (x^2-6x+23)/y SQUARE ROOT ENDS (y>0). In implicit form I have

    asked by Tony on May 12, 2011
  9. Physics

    A shell is fired from the ground with an initial speed of 1.60 × 103 m/s (approximately five times the speed of sound) at an initial angle of 43.0◦ to the horizontal. The acceleration of gravity is 9.81 m/s2 . a) Neglecting air resistance, find the

    asked by Anonymous on October 16, 2015
  10. Physics

    A person holding a lunch bag is moving upward in a hot air balloon at a constant speed of 6.1 m/s . When the balloon is 28 m above the ground, she accidentally releases the bag. What is the speed of the bag just before it reaches the ground? I got Vf^2=

    asked by T on May 23, 2016
  11. Math

    Find the probability of: a) Rolling a three OR a six with a single die Answer: P(3 U 6)= n(3U6)/n(S) = 3+6/6 = 9/6 reduced: 3/ b) Dealing an ACE OR a FACE CARD from a standard deck Answer: P(A U F)= 4/52 + 12/52 = 4/13 2. A 5-committee is to be chosen from

    asked by Jacob on March 6, 2011
  12. Physics

    A shell is fired from the ground with an initial speed of 1.60 × 103 m/s (approximately five times the speed of sound) at an initial angle of 43.0◦ to the horizontal. The acceleration of gravity is 9.81 m/s2 . a) Neglecting air resistance, find the

    asked by Jessika on October 16, 2015
  13. Calculus

    A gallon rises at the rate of 8 feet per second from a point on the ground 12 feet from an observer. To 2 decimal places in radians per second, find the rate of change of the angle of elevation when the ball on is 9 feet above the ground. Type your answer

    asked by Karen on December 19, 2018
  14. Physics

    A person holding a lunch bag is moving upward in a hot air balloon at a constant speed of 6.1 m/s . When the balloon is 28 m above the ground, she accidentally releases the bag. What is the speed of the bag just before it reaches the ground? I got Vf^2=

    asked by T on May 23, 2016
  15. Algebra

    Two more Algebra questions : Drawing a blank on this one, not sure where to start. Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x + 3y = 12 and passing through (9, -5). I have half a solution to this one:

    asked by John on October 15, 2007
  16. Math

    I have the following chart that I am supposed to find the percent increase in one step, not using a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 When I do this (and round) I get about 19% increase for each one. (we are supposed to round. Then I have

    asked by Sami on February 3, 2016
  17. physics

    Find the direction and magnitude of the following vectors. A⃗ =( 22 m )x^+( -15 m )y^ Express your answer in degrees using three significant figures. θA = Part B Express your answer in meters using two significant figures. |A⃗ | = m Part C B⃗ =( 2.5

    asked by ana22 on February 11, 2017
  18. English

    A. Zach enjoyed biking to his job at the Bistro Cafe'. the early morning ride gave some serenty to his hectic schedule. Opening the restaurant allowed him to get everything ready before the rest of the crew arrived. 1. In the above passage, an example of a

    asked by Jim Collum on June 12, 2013
  19. AP physics (answer whatever you can)

    how do you find the Fnet of 3 planets? do i find the forces of all the planets on each other and add it up? what if teh planets are at an angled position? 1000 kg car is going clockwise around a curve iwth radius of 30m. coefficient of frction=0.5 if the

    asked by Anthony on March 23, 2017
  20. Geometry

    Please answer at least one . PLEASE 1. Triangle XYZ has a right angle at Y. V,W are on XZ such that XV=XY. WZ=YZ, find ANGLE VYW . 2. STUVWXYZ is a regular octagon. Find SW/ TZ. 3. The interior angles of a convex polygon form an arithmetic progression with

    asked by Jayden on October 19, 2013
  21. question

    Which sentence has a preposition-related error? 1.There was a fight between the two men. 2.The Cerritos Center is near to my office. 3.They gave a party for Mary and me. 4.The report was sent to everyone except her. One of those sentences has TWO

    asked by Mindy on October 21, 2006
  22. French

    Could you check these thanks: Directions: Vrai ou Faux? 1. Un film doublé a des sous-titres. Answer: vrai 2. Un film en version originale est toujours en français. Answer: faux 3. Au cinéma, il y plusieures séances le week-end. Answer: Faux 4. On peut

    asked by Maria on November 30, 2009
  23. math

    help me solve these problems please 1 1/2 - 3 2/5 + 8/15 - 2 2/3 (-4 7/12) - (-3 2/3)- 1 /24 + 2 5/8 -3 1/2 - (- 1 5/6) + (-1 1/12)+ 2 3/4 8-5*2+6/(-2) this i think i can get the right answer 8-10+(-3) -2+(-3)=-5 is that the rite answer 2 7/9/ (-1 4/81)-

    asked by math on August 3, 2008
  24. Algebra

    I need to know if I need to further reduce my answer or if I leave it the way I have it. I have the original problem and then my answer. -b +or- sqrt b^2=4ac/2a answer x= -1/2 +or- 1/10

    asked by Megan on March 19, 2008
  25. calc

    rewrite into slope intercept form. 1) 3x-2y=7 answer: y=3/2x-7/2 2) 8x=y-1/2 answer: y=16x+1 3) 4x+2/3y=8 answer: y=-6x-12 are these correct?

    asked by chloe on August 29, 2015
  26. math

    Solve- 4x^2-9x+3=0 What is the smaller answer? Answer -1000 if there is no real value of x that solves this equation Answer must be +,- 1.0%

    asked by Shiv on April 26, 2018
  27. Algebra

    I need to know if I need to further reduce my answer or if I leave it the way I have it. I have the original problem and then my answer. -b +or- sqrt b^2=4ac/2a answer x= -1/2 +or- 1/10

    asked by Megan on March 19, 2008
  28. Algrera

    Write the equation of the line passing through the given two points? a) (3,7) and (4,7) Answer: m=7-7/4-3 b) (2,7) and (2,9) Answer: m=9-7/2-2 c) (5,-3) and (1,7) Answer: m=7-(-3)/1-5 Correct?

    asked by Marco on March 7, 2010
  29. Algebra

    1. Write the equation of the line with the given slope and y-intercept a) m=3/8 and b=6 Answer: y=3/8x +6 b) m=-2 and b=11 Answer: y=-2x+11 c) m=0 and b=6 Answer: y=x+6 Correct?

    asked by Marco on March 6, 2010
  30. Math

    Evaluate the determinant of each matrix -3 2 -3 0 -1 -1 3 0 -3 My answer is -36 The correct answer is -24 but I don't understand how they got the answer.

    asked by Aria on April 25, 2017
  31. Math Check

    All the directions say for these three problems is multiply and simplify. Are my answers correct? Thank you A)(x^2+2x-3)+(2x^2-x+1) Answer: 2x^3-6x^2+4x B)(x+1)(2x-1) Answer: 3x-1 C)(x-2)(x^2+2x-3) Answer: x^3-7x+6

    asked by Lauren on April 14, 2010
  32. geometry

    A triangle is made of wood sticks of lengths 8, 15 and 17 inches joined end-to-end. Pieces of the same integral length are cut from each of the sticks so that the three remaining pieces can no longer form a triangle. How many inches are in the length of

    asked by M on January 28, 2016
  33. Math

    What do you call numbers that cannot be arranged into 2-row arrays? multipication After some research I finally understand the question. Those would be the odd numbers or the numbers without a factor of 2 in them. After much stress and contemplating, I

    asked by Trudy on September 11, 2006
  34. Biology

    - "problems that result as blood alcohol concentration increases" Basically, I'm supposed to put what page number the answer is on, and then what the answer is. I have the page number, yet the answer is no where on the page to be found. I've read it over

    asked by Gamzee :o) on May 22, 2012
  35. jessie

    hi im doing a post lab sheet for chem class. and im having a little trouble. we did an experiment where we put a mixture into a bath and checked to see how long a color would leave from the mixture. i have temperature 12.6 C -> 285.6 K Time 816 sec but im

    asked by chem on October 15, 2010
  36. Public Speaking Please Check

    1. (TCO1) The route used to transmit messages is known as: my answer:decoding encoding decoding feedback noise channel 2. (TCO1) As Claire tells about her trip to the museum, she notices Emma and Brian yawning. The information that Claire is receiving is

    asked by Bryan on January 10, 2010
  37. why is physics so hard??????

    a velocity vector of 40 degrees below the positive x-axis has a y-component of -10 m/s. What is the value of its x-component. I know the answer is 11.9 m/s. When I first tried it, I got 6.43 and then I just tried bunch of stuff and I got 11.9 but what I

    asked by apoorva on September 19, 2007
  38. Physics (High School)

    A 7.24 g bullet moving at 636 m/s penetrates a tree to a depth of 4.87 cm. Use energy considerations to find the average frictional force that stops the bullet. Answer in units of N B) Assuming that the frictional force is constant how much time elapsed

    asked by Ama on December 19, 2011
  39. algebra

    Triangles ABC and DEF are similar. Find the area of triangle ABC. Round your answer to the nearest tenth. the answer should be __________m^2 triangle abc has a 12m. triangle def has 12m and 18m.

    asked by sally on March 9, 2013
  40. intro to physics

    I was wondering if you guys can help me with this question An airplance is traveling 835 km/h in a direction 41.5 degrees west of north. part a) find the component of the velocity in the northerly direction part b) find the same but in the westerly

    asked by emilia on April 21, 2012
  41. Statistics / Math

    If a student is chosen at random, find the probability of getting someone who is a man or a non-smoker. Round your answer to three decimal places. ********non***regular heavy total man*****135*****64******5*****204 women***187****21*******9*****217

    asked by Sam on February 26, 2008
  42. Physics

    A non-uniform beam of length L and weight w makes an angle of è with the horizontal. It is held in position by a frictionless pivot at its upper-right end and by a cable a distance of farther down the beam and perpendicular to it. The center of gravity of

    asked by Paul on April 3, 2007
  43. Economics

    What percentage of Americans GDP per capita is available to the average citizen of Mexico? Americas GDP $35060.00 Mexico GDP $8540.00 To find this answer, divide 8540 by 35060. Move the decimal point in your answer two places to the right to get the

    asked by LIsa on September 20, 2006
  44. science

    1. What is the half-life of Strontium-90? Explain your answer. Honestly I don't know how to get this answer. I've looked it up and stuff, but I just found the answer not how to know what it is. A link or explanation would be greatly appreciated. Thanks.

    asked by Rainshine on February 27, 2014
  45. English

    I give an examination tomorrow.So I need a help. Nearly crying,her little sister wanted to be left ( )herself. You will choose your answers blow. a.for b.with c.on d.to I think that best answer is a.But It didn't match its answer.Its answer is d.But I

    asked by Bayarbold on June 25, 2011
  46. Algebra

    3.29x=5.5√(x)+10,000 How in the world do I solve for x without using a calculator? I swear I've been on this for hours. I know the answer is 3133 because I estimated the answer and then began plugging in numbers until I got to the actual answer.

    asked by Enrique on July 28, 2015
  47. precalculus

    Can you check my answer? If it is wrong can you please explain why and give the correct answer? Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6 answer:2x+4y+z=-4 8y-5z=-17 z=1

    asked by Anonymous on November 30, 2016
  48. circles and arcs

    YOU have a circle with a traingle inside. P being the top of triangle and Q and R, are on the sides, PQ= (8x-10) and PR=(6x) and the bottom QR= (10x+10) SAYS: a)find X b)is the triangle equilateral, isosceles, or scalene? explain. We have not done this

    asked by lilman on May 23, 2012
  49. algebra 1

    select an appropriate unit from the choices below and connect the rate to that unit. answer a - ft /s answer b - mph answer c - mm/s answer d - km/s question : A person walking at 3,4 mph

    asked by kamryn on October 15, 2015
  50. pre calculus

    can you check my work Find two different sets of parametric equations for the given rectangular equation: y=x^2+10 answer: x=t y=t^2+10 x=t^3 y=t^6+10

    asked by Anonymous on December 12, 2016
  51. precalculus

    Can you check my work? find two sets of parametric equations for the given rectangular equation x+y^2=4 answer: x=-y^2+4 x=-t y=-t^2+4 x=-t^3 y=-t^3+4

    asked by Anonymous on December 12, 2016
  52. Math

    Divide into intervals and evaluate to find the max/min. f(x)= -(x-1)^2(x+4) I pick -2 -(-2-1)^2(-2+4)=-18 Is that the correct answer

    asked by Aria on February 5, 2017
  53. math

    Find the circumference of each figure. Use 3.14 for p and round your answer to one decimal place. i have a circle that is 3.75ft A~23.6 or 24?

    asked by A on September 16, 2009
  54. Math

    Find the sum. Write answer in simplest form. (x-4/x^2-2x) + (4/x^2-4) Not sure how this problem is solved, only one like this on my homework any help??

    asked by Antwon on December 31, 2017
  55. Chemistry

    What are probes in RFLP made of? HOw do they help isolate rare DNA fragments? I can't find the answer, so can I get some help please.

    asked by Andre on May 22, 2008
  56. physics

    ok so dr= 2i + 3j while F= 5i + 2j It wants me to find the work. now i know w=Fxdr. what i want to know is why when you take the dot product of both, you get a different answer compared to when you just multiply the magnitudes.

    asked by Mitch on March 6, 2010
  57. Religion

    Origen was the first Bishop of ______in what year. Studying for midterm and this is one of the questions I can't find an answer to

    asked by Maria on April 15, 2010
  58. Math

    Need help I have to find a pattern for 8, -1, 2, -1 I know the answer is 1/3 but have no idea how I get there...I am trying to multiply each by -1/2 but I can't get the 1/3 at the end for some reason and I have the similar problem as well: 8, -4, 2, -1

    asked by Maggie on May 24, 2008
  59. Math

    Explain how you could find the volume of a pyramid given a prism with the same base are and height. Justify your answer.

    asked by Helen on April 3, 2016
  60. algebra 2

    If x^2-x-1 divides ax^6+bx^5+1 evenly, find the sum of a and b. Show all steps and exlain your answer. Please, please help me out!! Thanks alot. =)

    asked by betty on March 31, 2009
  61. geometry

    a circle is inscribed in an equilateral triangle. how do you find the value of x? also have to round the answer to the nearest whole number.

    asked by ivette hanon on May 19, 2011
  62. COLLEGE CALCULUS. HELP!

    the fundamental theorem of calculus, f(x)=∫(0,x) t^3+2t^2+ 2 dt, and find f"(x). my answer was: f'(x)=x^3+x^2 f"(x)=3x^2+2x it said its wrong. i don't know how solve with interval, ∫(0,x)

    asked by MILY on April 17, 2012
  63. PreCal

    Find the distance between P1(3, –195°) and P2(–4, –94°) on the polar plane. Round your answer to the nearest thousandth.

    asked by Jack on September 5, 2011
  64. 7th grade

    find the Volume of a cylinder with a radius of 14 in and a height of 21 in. Then Change Your Answer In Cubic Feet?

    asked by hillary on April 12, 2010
  65. calculus

    For the function f(x) = 1 + sin(x) find f(2). Leave your answer rounded to tenths. Assume x is in radians

    asked by kaycee on February 5, 2010
  66. Graphing Linear Equations! Quiz! HELP ASAP

    I just need many examples and tips on how you solve, find, graph, and answer linear equations. I'm so confused!

    asked by Random Girl on February 7, 2018
  67. calculus

    find the bound on the real zeros of the polynomial function f(x)=x^4+x^3-4x-6 cna you please show me how you got the answer please

    asked by anonymous on December 22, 2012
  68. math

    find the range the answer will be within 6,473+3,234 32,959+15,568 79,484+8,933

    asked by stephanie on August 24, 2011
  69. geometry

    Find the area of the quadrilateral in Exam Figure 5. Round your answer to two decimal places.

    asked by g on July 18, 2013
  70. Statistics

    find z such that 6.6% of the standard normal curve lies to the right of z. (Round your answer to two decimal places.)

    asked by Amy on November 16, 2016
  71. math

    If x^2-x-1 divides ax^6+bx^5+1 evenly, find the sum of a and b. Show all steps and exlain your answer. Thanks alot! =)

    asked by not math right now on April 2, 2009
  72. mathURGENT!!!!!!!!!!

    find all ordered pairs of positive integers (x,y) that satisfy the following equation: x^y=2^64. please answer and explain how you got it!!!!

    asked by don on February 14, 2013
  73. pre calc

    Can someone please help me f(x)=1/3 square root 1-2x and g(x)= (x-2)/x. Find and simplify (g of g)(3)/(g of f)(-24). The answer I got it -24/7 and i Am unsure If it is correct. Please show all work Thank you

    asked by Marie on February 5, 2017
  74. Algaebra

    Two functions f and g are defined by f:x = x^2 + 3 g:x = 2x+1 Find the function fg Please help and show all working out,i got the answer for it but i really don't understand it!!! Thank You

    asked by Samantha on December 19, 2012
  75. Science

    Can someone please tell me what acid does to DNA? Ive looked everywhere and can't find anything simple enough to understand and need an answer really quick. thanks!

    asked by John on April 9, 2008
  76. Math

    Find the slope of the line that goes through the given points. I think my answer is correct but would appreciate some feedback so that I may compare! Thanks in advance! (3,-2),(-1,-6)

    asked by Tia on February 26, 2009
  77. geometry

    If a=6cm, find the area of the equilateral triangle. Round the answer to one decimal place.

    asked by Anonymous on November 17, 2010
  78. Statistics

    If four coins are flipped at once, find the probability that there will be at least 2 heads. Round your answer to 3 decimal places.

    asked by Hunter on March 2, 2016
  79. Algebra

    Find the slope of the line that goes through the given points. I think my answer is correct but would appreciate some feedback so that I may compare! Thanks in advance! (3,-2),(-1,-6)

    asked by Tia on February 26, 2009
  80. math

    if x+ a= b/3x and b does not = 3 then x =? i cant seem to find a way to seprate the two x's since 3/b is always attached. subtract (b/3)x from both sides x- (b/3) x+a=0 x(1-b/3)= -a x= a/(1-b/3) i looked at the back of my book and the answer is 3a/b-3

    asked by fernando on July 15, 2007
  81. Algebra

    Find the slope of the line that goes through the given points. I think my answer is correct but would appreciate some feedback so that I may compare! Thanks in advance! (3,-2),(-1,-6)

    asked by Rachale on February 26, 2009
  82. calculus

    limit as x approaches 3 where f(x)=6x+2 Find a formula for δ such that for any ε > 0, |f (x) - 20| < ε if |x - 3| < δ. (In your answer, use the word "epsilon" instead of the symbol ε.) I have no idea how to do this? Please help!!!

    asked by john on January 30, 2011
  83. Math

    Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim_(x->59)(sqrt(x+5)-8)/(x-59)

    asked by Anonymous on January 28, 2012
  84. geometry

    Find the SURFACE AREA of a sphere that has a diameter of 18 centimeters. Leave your answer in terms of pi.

    asked by Hannah on May 26, 2013
  85. geometry

    Find the area of the base and the volume of a cone. the height is 17 and the radius is 8. my answer needs to be in pie

    asked by Hannah on May 26, 2013
  86. math

    a die is thrown twice, find the probability of getting two 5’s. Be sure to represent your answer as a fraction in simplest form!

    asked by ella on July 25, 2017
  87. spanish

    Im doing a project on Argentina, and we need to find a tradition and answer questions. Do you know of any Argentine traditions or know any websites i could use?

    asked by Emily on March 24, 2008
  88. mathematics

    find the general solution to the following differential equation dy/dx=-(In(x))/(x^2)*y^1/2 (x>0,(y>0)give answer in implicit form.

    asked by queros on May 29, 2008
  89. geometry

    Find the area of a regular pentagon with a side of 6ft. answer nearest tenth

    asked by lilman on May 24, 2012
  90. geometry/help

    Find the area of a regular heptagon with the side 7 cm. answer 178.1 cm² can you check

    asked by mike on April 27, 2011
  91. math

    Let X be a normal random variable with μ = 12 and σ = 2. Find the value of the given probability. (Round your answer to four decimal places.) P(7 < X < 9) =

    asked by titi on July 2, 2017
  92. math

    Find the exact circumference of a circle with diameter equal to 8 ft. I know the answer is 25 ft but the answers I have to choose from are 8, 16 or 64

    asked by lisa on January 15, 2012
  93. algebra problem

    Find the greatest common factor of the two expressions 18wx^7z^7 and 15wx^3 Simplify your answer as much as possible.

    asked by mikecardoso123 on August 14, 2009
  94. math

    FIND THE SLOPE AND THE Y-INTERCEPT OF THE LINE. WRITE FRACTIONAL ANSWER IN LOWEST TERMS. 4y + 4x + 7= 16+4x

    asked by DAVISHA on February 4, 2009
  95. Math

    x P(x) 0 0.3 1 0.15 2 0.2 3 0.35 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places

    asked by Anonymous on April 20, 2016
  96. Geometry

    the angle of depression from D to F measures 40 degrees. If EF= 14 yd, find DE. round answer to nearest 10th

    asked by kelsey on February 8, 2012
  97. 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
  98. Algebra

    Find the domain of the function. f(x)=(sqrt x+6)/(-2x-5) Write your answer as an interval or union of intervals.

    asked by Jena on February 3, 2011
  99. maths

    Find length of diagonal of rectangle whose adjacent sides are 30cm and 16cm.tell answer

    asked by shikha on July 26, 2016
  100. Geometry

    Angles P and Q are congruent. m

    asked by queen on July 11, 2017