Hi, I'm struggling to do two questions. 1) If ||u||=2, ||v||=root 3 and u dot v = 1, find ||u+v|| 2)Show that there are no vectors u and v such that ||u|| = 1, ||v||=2 and u dot v =

18,527 results
  1. Math ~CHECK MY ANSWER~

    1) Which of these is a rational number? a. Pi b. Square root 3 ****** c. Square root 2 d. 1.3 (the # 3 has a line at the top) 2) Which of the following sets contains 3 irrational numbers? a. Square root 120 , n , Square root 3 ****** b. - Square root 256 ,

  2. math

    Four students work to find an estimate for square root 37. Who is closest to finding the true estimate? (1 point) Rhonda: "Use square root 16 and square root 25 to estimate." Ricardo: it should be between square root 25 and square root 36." Riley: "i use

  3. Math

    For questions 1-10, match each inequality with its corresponding solution by entering the capital letter only. For example, type "A" only. A. x-1>5 B.2x≤6 C.x-7>-4 D.-2x -3, open dot at -3 and shaded to the right 4.x 3, open dot at 3 and shaded to the

  4. math

    1) Which of these is a rational number? a. Pi b. Square root 3 ****** c. Square root 2 d. 1.3 (the # 3 has a line at the top) 2) Which of the following sets contains 3 irrational numbers? a. Square root 120 , n , Square root 3 ****** b. - Square root 256 ,

  5. Math Help!

    Four students worked to find an estimate for square root 22. Who is closest to finding the true estimate? A. Tiffany: "Use square root 16 and square root 25 to estimate." B. Todd: "I use square root 9 and square root 16." C. Trenton: "It should be square

  6. Pre-Algebra 8th grade

    I need help with my homework that is due tomorrow. Question 1 (Multiple Choice Worth 1 points) (01.01 MC) Which decimal number best describes the fraction fraction 137 over 6? *** A repeating decimal 22.83 with a bar over 3 A terminating decimal 22.83 A

  7. mathematics

    Consider points $O, A, B, C, D$ and $R$ in the diagram below, such that $AR = 4, BR = 2, CR = 2,$ and $DR = 6$: [asy] size(250); import TrigMacros; import olympiad; pair O, A, B, C, D, R; O = (0,0); A = 3*dir(-40); B = A + 6*dir(100); R = 1/3*A + 2/3*B; C

  8. geography

    What does a star or dot in a circle usually mean on a map? I have my answer but again my Mom questions it? Here is my answer! A star in a dot means a capital of a country. A dot in a circle means a capital of a state.

  9. Calculus

    PLEASE HELP ME! What is the x-coordinate where the graph of the function represented by the Maclaurin series 1 minus 2 times x plus 4 times x squared over 2 factorial minus 8 times x cubed over 3 factorial plus dot, dot, dot, negative 1 raised to the nth

  10. MATH PRE-ALGEBRA

    Explain how to know wheather the endpoint of the graph of an inequality should be a closed dot or an open dot.

  11. Algebra

    Hi, I'm struggling to do two questions. 1) If ||u||=2, ||v||=root 3 and u dot v = 1, find ||u+v|| 2)Show that there are no vectors u and v such that ||u|| = 1, ||v||=2 and u dot v = 3 Please help if you can. Thanks a million

  12. Trigonometry

    I'm trying to find the cosecant of 11 pi/6. The answer is -2, but I'm not sure where this came from. I thought You would flip the sine value which was sq. root of 3/2, making it 2/sq. root of three, which would then become sq. root of -6 over 3 or sq. root

  13. Math

    You plan to go from Portland to Tucson. Let x be the distance in miles of any flight between Portland and Tucson. Can you write an inequality that represents the mileage of any route between Portland and Tucson? oi41 dot tinypic dot com/29dbjm0 dot jpg I

  14. Limiting Reagents

    in the synthesis of FeC2O4 (dot) 2H2O, which reagent would be the limiting reagent? FeSO4(NH4)2SO4 (dot) 6H2O - 2.68g. H2C2O4 (dot) 2H2O - 1.99g. I just want to know how the H2Os would effect finding the limiting reagent. As in do they change the ratio?

  15. mathematics

    Consider points $O, A, B, C, D$ and $R$ in the diagram below, such that $AR = 4, BR = 2, CR = 2,$ and $DR = 6$: [asy] size(250); import TrigMacros; import olympiad; pair O, A, B, C, D, R; O = (0,0); A = 3*dir(-40); B = A + 6*dir(100); R = 1/3*A + 2/3*B; C

  16. Math simplifying mixed radicals

    Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root and the numbers infront of the square root are supposed to be multiplied. 2

  17. physics

    A uniform electric field of magnitude 250 V/m is directed in the positive x direction. A +12.0-ìC charge moves from the origin to the point (x, y) = (20.0 cm, 50.0 cm). (a) What is the change in the potential energy of the charge–field system? (b)

  18. Math Please Urgent

    Here are the questions I need help with, please help. [(1/4)^-3 divide sign (1/4)^2]^-2 I got (1/4)^10 but I got it wrong (3^1/2)^3 _______ I got 1/216 9 (-56r^2)divide sign (-7r^2)= I got 8r x(y)(x)(2y) (12) (10xy^3) (3x^2y^2) (5x) (2y) simplify sqaure

  19. Grade 12 Math

    if a and b are unit vectors, and magnitude of vectors a +b = sq. root of 3, determine (2a-5b) dot (b+3a).

  20. Chemistry

    is the lewis dot structure and a electron dot diagram the same thing ?

  21. math

    Graph the inequality:x

  22. Algebra

    1.) Which of the following numbers could be added to 3/16 to make a sum greater than 1/2? 5/16 10/32 2/6 1/4 Which of the following pairs of numbers provides the best estimate of (square root of 45)? (square root of 25) and (square root of 36 (square root

  23. linear algebra

    show that if u (dot) v = 0 for all vectors v, then u = 0. One of the Axioms an inner product has to satisfy is: x dot x >=0 where equality only holds if x = 0 So, in your problem you take the special case v = u. Then: u dot u = 0 ----> u = 0

  24. Math

    Just need some help... Directions: Multiply or raise to the power as indicated... Then simplify the result. Assume all variables represent positive numbers. 1. 5(square root of 6) times two-thirds(square root of 15)= 3 one-third (square root of 90)= (This

  25. Algebra

    Rationalize each expression by building perfect nth root factors for each denominator. Assume all variables represent positive quantities. I don’t understand how to compute these. Also I don’t have the square root sign so I typed it out where it would

  26. Chemistry

    Where Can i find drawing of the electron dot structure of the following atoms. Argon,Calcium,Iodine www.webelements.com will give you the electron configuration. Scroll down the menu on the left side. The electron dot structure is done this way: Write the

  27. math calculus

    if i,j,k are the standard unit basic vectors, in 3 space, determine the value of k dot(j-3k)+(i-4k) dot (i-4k)-8 |i cross -k| (Simplify without using components)

  28. dot product of vecotrs

    Question: Find (3a+b)dot(2b-4a) if a=-i-3j+k and b=2i+4j-5k I did: =3(-1,-3,1)+(2,4,-5)dot 2(2,4,-5)-4(-1,-3,1) =(-3,-9,3)+(2,4,-5)dot(4,8,-10)-(4+12,-4) =(-1,-5,-2)dot(0,-4,-6) =(0,20,12) =0+20+12 =32 The text book answer is -80. What did I do wrong/

  29. Science

    Which of the following brake fluids is a strong paint solvent? DOT 1 DOT 2 DOT 3 DOT 5

  30. NVQ level 3 buisness admin

    ok im really struggling on the questions on unit 314 hy the hell is there no question marks i have to anwser them like questions,its confusing me?? please can anyone shed a light over my way please.x cheers ema We don't have access to NVQ questions. Please

  31. Sociology

    Okay... here's the assignment. I've been trying this for a week and I'm screwed. Spend 30 minutes on each of these sites and answer the following questions in a 3-5 page paper, APA style. pchrgaza (dot) ps memri (dot) org/archives (dot) html In this

  32. MTH 157

    I need help on these two questions. 1. Describe what happens to the three points of concurrency that determine the Euller lines when the triangle is (a) isosceles, (b) equilateral 2. Which of the following triples of numbers can be the sides of a right

  33. Vectors/Scalars?

    is (u dot v)dot (a dot c) a scalar quantity or vector quantity? What's the difference? (I'm thinking scalar since it has no direction and it only has magnitude.)

  34. Linear Algebra

    Let u and v be vectors in R^n, and let T be a linear operator on R^n. Prove that T(u) dot T(v) = u dot v IFF A^T = A^-1 where A is the standard matrix for T.

  35. College Algebra

    I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each

  36. College Algebra

    I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each

  37. RE

    i am really struggling with my re homework and i would really appreciate any help any one can give me. i have 5 questions i need to answer ive managed to answer 4 of them but i am struggling with this one:- What points do Christians make about miracles.?

  38. To @Anonymous regarding the fluid mechanics questi

    Could you have a look at the question again on www(dot)jiskha(dot)com/questions/1842236/note-let-us-combine-a-source-of-strength-m-at-the-origin-with-a-uniform-flow-of-velocity , please? I have a follow-up question for you

  39. Calculus

    This is the question: i[dot]imgur[dot]com/EHneTuB[dot]jpg Am i correct in simply adding 1 + (-3), and equates to (-2) being the answer.

  40. calculus

    Is this the correct answers for these questions Verify the means value theorem holds on the interval shown. Then, find the value c such that f'(c)=(f(b)-f(a))/(b-a) b.f(x)=x^3=x-4 on [-2,3] c= square root 7/3 c. f(x)= x^3 on [-1,2] c= square root 1 d.

  41. Math radical equations

    Please show me how to do these step by step because I have a test tomorow and I need to understand how to do these questions : 1. M-1 under the square root sign +5= m-2 2. 3n+10 under the square root = n+4 3. K-9 under the square root - (k under square

  42. Math re-post

    Please choose an acceptable screenname for future questions. ———————————— What is 10*9*8*7*6*5*4*3*2*1? 10! or 3628800 100 1000 10^10 ——— One day, a person went to a horse racing area. Instead of counting the... Y=log x If

  43. physics

    When the thigh is fractured, the patient's leg must be kept under traction. One method of doing so is a variation on the Russell traction apparatus. (See the figure.) Please place period in place of (dot) oi53(dot)tinypic(dot)com/2a0b7yx(dot)jpg If the

  44. math... help me.. please =)

    Hello. I'm learning about simplying radicals and in one of the questions it has a variable to the second power like below: 1) square root of 28x^2 2) square root of 25x^2 3) square root of 80n^2 Can you answer at least one of them and explain what you did?

  45. Physics

    Three blocks are connected on the table as shown below. The coefficient of kinetic friction between the block of mass m2 and the table is 0.345. The objects have masses of m1 = 3.25 kg, m2 = 1.25 kg, and m3 = 2.50 kg, and the pulleys are frictionless. The

  46. Math

    I am struggling with absolute value functions, especially equations. I need help with these questions: 1. |x^2 - 2x - 3| - 4 2. | x^2 - 2x| = 1

  47. Math

    I'm struggling with factoring these two questions. 36x^4 - 3x^3 - 18x^2 9x^2 + 3xy - 2y^2

  48. Algebra

    Can you explain how to find the solution of 3x^2-2x+5, using the quadratic formula? I got it down to (2 +/- sq. root of -56)/6. But my book then reduces that to (2 +/- 2 times the sq. root of 14i)/6. But I think in place of the 2 and the sq. root of 14 it

  49. math

    What does it mean to have the sqaure root of 5 with a 2 in front of it? How do you figure it out? 2 sqrt 5 is two times the square root of 5. It depends where the 2 is placed wrt the square root symbol. If it is on the same line as the square root symbol,

  50. Math simplifying mixed radicals

    Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root: 2 square root 48 3 square root 81 6 square root 12 3 square root 32 2

  51. Math

    What are the solution sets of the following 3 problems,the square root of x squared + 3x = x-3, the square root of 3x + 10 = x + 4 and finally the square root of 8x - 2 = the square root of 2x? Help much appriciated. I will one as an example. sqrt(3x + 10)

  52. Geometry

    Find every possible area for a square drawn by connecting dots of a 3 dot by 3 dot grid.

  53. Calculus Related

    tinyurl[dot]com/osguqrd Replace [dot] with a . Please provide an answer to the question in the link above.

  54. math and physics

    keepandshare[dot]com/doc16/727/math-pdf-99k?da=y *replace all [dot] with a period --> .

  55. algebra

    1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3.) not sure on this one 4.) wrong---> - square root of six is not a solution Hope this Helps! 1)find p(-3)if p(x)=4x^3-5x^2+7x-10 =-184 2)If r(x)=4x^2-3x+7,find r(3a^2) =12a^4-9a^2+7

  56. Please Help asap: Math

    X is greater than or equal to 3 I'm pretty sure that its D, but i'm not sure 0=open dot @=closed dot A) @-------> 3 5 B)

  57. Vectors: Dot product

    Given a and b unit vectors if |a+b|=square root 3, determine (2a-5b)dot(b+3a) First I foiled the whole thing: =2(a dot b)+ 6 (a dot a) - 5(b dpt b) -15(a dot b) =-13(a dot b) + 6(a dot a) - 5(b dot b) =-13(1)(1)+6-5 =-13+1 =-12 Textbook answer is -11/2 I

  58. Math - Vectors

    If "u = (2,2,-1)", "v = (3,-1,0)" and "w = (1,7,8)", verify that "u (dot) (v + w) = u (dot) v + u (dot) w". My work: LHS: u (dot) (v + w) = (2,2,-1) (dot) (4,6,8) = [(2,2,-1) (dot) (3,-1,0)] + [(2,2,-1) (dot) (1,7,8)] = [u (dot) v] + [u (dot) w] Therefore,

  59. Vectprs and Scalars

    Why are some of these scalars and others are vectors? What's the difference and how can you tell? 1. a dot (b x c) 2. (a dot b) x (b dot c) 3. (a + b) dot c 4. a x (b dot c) 5. (a x b) dot (b x c) 6. (a + b) x c 7. a dot (b dot c) 8. (a x b) + (b x c) 9.

  60. Calculus

    Find the value of 2 over 9 minus 4 over 27 plus dot dot dot plus the quotient of the product of negative 1 raised to the n plus 1 power and 2 to the nth power and the quantity 3 raised to the n plus 1 power plus dot dot dot . (10 points) A) 1/5 B) 1/6 C)

  61. Calculus

    Find the value of 2 over 9 minus 4 over 27 plus dot dot dot plus the quotient of the product of negative 1 raised to the n plus 1 power and 2 to the nth power and the quantity 3 raised to the n plus 1 power plus dot dot dot . (10 points) A) 1/5 B) 1/6 C)

  62. College Algebra help please

    I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth root factors for each

  63. Math

    Graph the inequality:x

  64. algebra

    For the following question, please reference the graphic at: screenshotsfirefoxcom/cjbaIYetsJhJJimy/ds055uzetaobbcloudfrontnet Pictured is the graph of the equation 4x²=y(1-y)(2-y)² rotated around the y-axis. Find the volume of the egg.

  65. physics

    Three point charges are located away from a dot. charge 1 is 3 cm north of the dot and is 2.1 nC. Charge 2 is 5 cm east of the dot and is -5nC. Charge 3 is -10nC and is located 45 degrees northeast and 5.831 cm away from the dot. What is the net electric

  66. Linear Algebra

    Could anyone please help me with the question I posted earlier today? Thank you! www(dot)jiskha(dot)com/questions/1839870/can-i-have-help-with-the-following-question-related-to-the-concept-vector-subspaces

  67. linear algebra

    show that if u dot v = u dot w for all u, then v = w. You can use the result of the previous problem: http://www.jiskha.com/display.cgi?id=1184622247 Linearity of the inner product implies u dot v = u dot w -----> u dot(v-w) = 0 This is true for all u,

  68. Physics

    i41 tinypic com/2qna74k png (add the periods) For the vectors in the figure, with a = 6.4, b = 2.5 and c = 6.87. Calculate a(dot)b calculate a(dot)c calculate b(dot)c I got 0 for a(dot)b but the same method (ac*cos(theta)) does not work for the other two,

  69. English

    Dot a dot dot dot a dot dot Spotting the windowpane. Spack a spack speck flick a flack fleck Freckling the windowpane. A spatter a scatter a wet cat a clatter A splatter a rumble outside. Umbrella umbrella umbrella umbrella Bumbershoot barrel of rain.

  70. algebra

    Please reference the photo at: screenshotsfirefoxcom/ak1Ss85a8nhM4o2t/brilliantorg for the question. What is the value of XY??? Thank you

  71. Science (Biology)

    Use your knowledge of photosynthesis to explain what is happening in the following graphs. 67(dot)media(dot)tumblr(dot)com /d99a0dd856c87dfc21b9314f89019994/tumblr_o7ltp1unLS1tt1il6o1_1280.jpg

  72. general math

    here's an easy one for starters... what means greater or equal to on a number line, a closed dot or an open dot? open dot. it is a closed dot, 1000% sure!!!!!!!!!

  73. geometry

    Please reference the illustration at screenshotsfirefoxcom/kzZjGCIcg9EMQ0MH/brilliantorg to answer the following question: What percentage of the square's area is colored blue? 30% 35% 40% 45% 50%

  74. Math

    find value of (f•g)'(x) at x=1 for f(u)=cot(pi*u/4), u=g(x)=6(square root(x)) By the way, the little dot is supposed to be hollow above, as in f of g of x.

  75. English

    How do you read ebible.org? 1. e bible dot o,r,g 2. e bible dot [ɔ́:rɡ] 3. e,b,i,b,l,e, dot o,r,g 4. e,b,i,b,l,e dot [ɔ́:rɡ]

  76. Chemistry

    My ONLY three questions I need help on! I did the other 50 something already!(: Why are covalent bonds weak in the presence of heat but strong in the presence of water? What are the 5 rules for ionic bonding? Give an example of a compound that is

  77. Chemistry

    Hi everyone, I really need help with this problem. What is the reactant, products, and what compounds is it? Is it H2O, O2, or what? What are the transition molecules? Help please. Do as below to get to the image. I couldn't put the URL in and it isn't my

  78. Conditional Probability

    Please refer to the illustration at screenshotsfirefoxcom/jZoizoMJf8a3H0UZ/ds055uzetaobbcloudfrontnet to help answer the following question: Zeb's coin box contains 8 fair, standard coins (heads and tails) and 1 coin which has heads on both sides. He

  79. Math

    Here are the questions I need help with, please help. [(1/4)^-3 divide sign (1/4)^2]^-2 I got (1/4)^10 but I got it wrong (3^1/2)^3 _______ I got 1/216 9 (-56r^2)divide sign (-7r^2)= I got 8r x(y)(x)(2y) (12) (10xy^3) (3x^2y^2) (5x) (2y) simplify sqaure

  80. Math Ms. Sue

    Here are the questions I need help with, please help. [(1/4)^-3 divide sign (1/4)^2]^-2 I got (1/4)^10 but I got it wrong (3^1/2)^3 _______ I got 1/216 9 (-56r^2)divide sign (-7r^2)= I got 8r x(y)(x)(2y) (12) (10xy^3) (3x^2y^2) (5x) (2y) simplify sqaure

  81. maths surds please help and explain

    Simplify A.1/root a +2 b.root 18/25 c.root a x cubed root a d.root x + 2 root y/root x-2 root y e.root5 x root72 /root 3

  82. Calculus

    Could someone help me with this question. Determine what limit would be represented by the following graph. imgur dot com/bceWN I am not sure if it has open dot or closed but what would the equation be for open and closed dot?

  83. Math

    Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. The square root of 3y^4 to the third root divided by the square root of 15x^4 to the third root. Here is what I have so far: I multiplied. The square root

  84. graphing

    which of these is correct description of each inequality as it would be graphed on a number line. x 2 Closed dot on 2, arrow to the left Closed dot on 2, arrow to the right Open dot on 2, arrow to the left Open dot on 2, arrow to the right nevermind

  85. Math

    Consider the following line plot. 1 dot over 1|1 dot over 2| 1 dot over 3| 2 dots over 4| 3 dots over 5| 3 dots over 6| 2 dots over seven Would the mean or median be affected more with a data point of 20? Explain. Thank you

  86. math

    Solve the compund inequality and graph the solution. -4-2 and I did t+2

  87. math

    Solve the compund inequality and graph the solution. -4-2 and I did t+2

  88. Math quick help

    Oh man.... I don't understand how to simplify though... Can u please help me with These questions : 2 * square root 18 5* square root 48 3* square root 54

  89. Math: Cross Product

    Prove that | a x b | = (sqrt) [(a (dot) b)(b (dot) b) - (a (dot) b)^2]

  90. geometry

    Please refer to the following photo to answer this question: screenshotsfirefoxcom/0F0pXhMjyyk0fnnP/brilliantorg A kite is divided into four regions by two line segments that connect the midpoints of opposite sides. Is the total blue area equal to the

  91. Bibliography

    In a bibliography, what is the title of the website? For example, for mises[dot]org/daily/3663 (please replace the [dot] with a period) is the title of the website "Mises[dot]org", "Ludwig von Mises Institute", or neither? I always thought it was, for

  92. Algebra

    I had to solve the function g of f where f is x^2+1 and g is sq. root of x. I wrote this out as the sq. root of x^2+1. The ^2 and the sq. root canceled each other out, so I was left with x + sq. root of 1. But my book got sq. root of x^2+1. Was the further

  93. Math

    I am not sure which questions I got wrong but I am not getting the link correct to the next box. The website is mathbits(dot)com/caching/holiday/H30976.html I got these answers 1.) Choice 3 2.) Choice 2 3.) a.) Choice 2 b.) 63 4.) 8 To move on I need to

  94. Algebra

    I had to solve 2x^2-x-1 using the quad. formula. I got it down to (1 +/- the square root of neg. 8) divided by four. I broke the sq. of neg. 8 into the sq. root of 4 and the sq. root of -2. But my question is could it also be the sq. root of -4 and the sq.

  95. Math

    Quick question, I'm learning about inequalities and graphs, so I just have one thing that I forgot. With an underscored < symbol, would the graph have the open dot or closed dot? I forgot to take notes on this. My bad! I think that a < symbol that is not

  96. Physics

    I need help with this exercise, I don't even know where to start. imgur(dot)com/WDCikKK(dot)png

  97. Math

    For inequality number lines would a less than or = to sign mean that that it would be a closed dot or open dot?

  98. Algebra

    These are the three questions that I'm struggling with. Question 2 is a matter of terminology. Questions 1 and 3 are just difficult for me to decipher through and are causing me some confusion. (The initial set of directions apply to each question). 1.

  99. math

    i.imgur[dot]com/hE0sWBt[dot]gif prove. [steve- please take another look at this.]

  100. English

    happy123 at hmail dot com --------------- How do you read this? happy one two three at h mail dot com (is this right?)

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