Posts by Bob

Total # Posts: 3,557

  1. physics

    a skier is acceleration down a 30.0 degree hill at 3.50 m/s^2. how long (in seconds) will it take her to reach the bottom of the hill. assuming she starts from rest and accelerates uniformly, if the elevation change is 120m?
  2. physics

    a skier is acceleration down a 30.0 degree hiss at 3.50 m/s^2. how long (in seconds) will it take her to reach the bottom of the hill. assuming she starts from rest and accelerates uniformly, if the elevation change is 120m?
  3. AP physics

    a delivery truck travels 9 blocks north, 7 blocks west and 12 blocks southwest. What is the final displacement from the origin? blocks are equal length
  4. math

    Show that 5x7^n+3+11^n-8 is always divisible by 3 for all numbers for n
  5. math

    We define two numerical operations labelled T and R. The effect of T is to add 1 to a number. For example, if we apply the operation T to the number 2 three times in a row, we obtain 3, then 4, then 5. The effect of R is to find the negative reciprocal of a number. For example...
  6. Math

    will the answer to this question be a positive number?
  7. Math

    The angle between two force a and b vectors is 114o. The scalar projection of is – 13 N. Determine the magnitude of b. Can the magnitude be a negative number?
  8. Vectors

    Determine the numbers a, b, and c, such that the vector (a, b, c) is a unit vector with directional angles of 60.3o, 34.0o, and 105o.
  9. math

    Bruce draws rings of rhombuses about a common centre point. All rhombuses have the same side length. Rhombuses in the first, or inner, ring are all identical. Each rhombus has a vertex at the centre and each of its sides that meet at the centre is shared with another rhombus. ...
  10. math

    Please help me with this question! It is due tomorrow!
  11. math

    We define two numerical operations labelled T and R. The effect of T is to add 1 to a number. For example, if we apply the operation T to the number 2 three times in a row, we obtain 3, then 4, then 5. The effect of R is to find the negative reciprocal of a number. For example...
  12. math

    Wow... I thought it said *... you may not seek help from other people, including people whom you could contact via the internet*?
  13. math

    I can only think of 5 3 2 3 5 5 4 1 4 5 5 2 3 2 5 5 1 4 1 5 ?
  14. math

    Diana bought a car for $5000 and plans to sell it to make a 20% profit. What should she sell it for to make the profit she desires?
  15. Geometry

    Tangent Lines practice problems. Unit 7 3. In the figure below, lines that appear to be tangent are tangent. Point O is the center of the circle. Which is the value of x? I am really confused on this question. If anyone could help that would be great
  16. Math

    Ms. Sue, you deserve to 'DIE'!
  17. Math

    Adam used the three fractions to make a circle graph dhd
  18. Physics

    The critical angle is the angle at which a ray of light is no longer refracted but completely reflected. True False
  19. SCIENCE

    A sphere of mass 50g and diameter 20cm is rolling with a speed of 5cm/sec . What will be its its total energy.
  20. Maths

    The Random Variable X is normally distributed with mean 560 and standard deviation 20. Find P(X<530) which I calculated as 0.0668. However... Next question asks It is known that p(|X-560|<a) Find the value of a
  21. Statistics

    The Random Variable X is normally distributed with mean 560 and standard deviation 20. Find P(X<530) which I calculated as 0.0668. However... It is known that p(|X-560|<a) Find the value of a
  22. social studies

    which of the following is not a type of hieroglyphic sign? a.)Alphabetic sign b.)word sign c.)number sign d.)syllabic sign
  23. Precalculus

    Suppose you deposit $10,000 into an account earning 3.5% interest compounded quarterly. After n quarters the balance in the account is given by the formula: 10000(1+0.035/4)^n a) Each quarter can be viewed as a term of a sequence. List the first 5 terms. b) Identify the type ...
  24. Precalculus

    Suppose you deposit $10,000 into an account earning 3.5% interest compounded quarterly. After n quarters the balance in the account is given by the formula: a) Each quarter can be viewed as a term of a sequence. List the first 5 terms. b) Identify the type of sequence this is...
  25. Precalculus

    sorry didnt get whole question. A tool and die company buys a machine for $175,000 and it depreciates at a rate of 30% per year. (In other words, at the end of each year the depreciated value is 70% of what it was at the beginning of the year.) Find the depreciated value of ...
  26. Precalculus

    ool and die company buys a machine for $175,000 and it depreciates at a rate of 30% per year. (In other words, at the end of each year the depreciated value is 70% of what it was at the beginning of the year.) Find the depreciated value of the machine after 5 full years.
  27. Precalculus

    you borrow $5,000 from your parents to purchase a used car. The arrangements of the loan are such that you make payments of $250 per month toward the balance plus 1% interest on the unpaid balance from the previous month. (a) Find the first year monthly payments and the unpaid...
  28. Geometry

    Complete the following: Describe one way that concepts about similarity could be used in real life. Write two proportions in the form start fraction a over b end fraction equals start fraction c over d end fraction. Only one of your proportions should be a true equation. Do ...
  29. Precalculus

    A museum borrows $2,000,000 at simple annual interest to purchase new exhibits. Let x represent the amount borrowed at 7%, y represent the amount borrowed at 8.5%, and z represent the amount borrowed at 9.5%. Set up a system of linear equations to determine how much is ...
  30. NM History

    Thank You
  31. NM History

    I believe it is an opinion question.
  32. NM History

    Based on your learning in this unit, what is one place that holds special significance for native american identity in new mexico? Give two reasons to justify your choice.
  33. use exactly 100 letters to write a sentence or two

    ?
  34. Physics

    D) in a directin exactly opposite to the electric field
  35. Pre calc

    Evaluate using the Pythagorean indentities Find sin? and cos? if tan? =1/6 and sin? >0 Help please ! Thank you !
  36. NEED G+HELP ASAP

    a +1/3 = 6/7 1. 1 3/21 2. 5/10 3. 7/10 4. 11/21 EXPLAIN PLEASE
  37. math

    a fertilizer covers 5/6 square foot in 1/2 unit rate
  38. Social Studies

    What examples are given of a limited government and an unlimited government in the section? How did each type of government affect its citizens?
  39. math

    20*8= 160, 20*10= 200, 40*2= 80, and 160+200+80= 240 therefore what Steve said was wrong
  40. math

    since x=20, he bought 20 8-cent stamps and 20 10-cent stamps and 40 2-cent stamps
  41. math

    so then do 8x+10x+4x=22x and 440 / 22= 20
  42. algebra

    Sylvia bought a 6-month $1900 certificate of deposit. At the end of 6 months, she received a $209 simple interest. What rate of interest did the certificate pay
  43. health

    I think it is more me work out side the home
  44. health

    which is a main factor that accounts for changes in the american family structure
  45. health

    what text are you talking about this is a test
  46. health

    just please tell me the answer
  47. health

    CHECK MY ANSWER
  48. health

    I THINK IT IS PERSONAL FRIENDS
  49. health

    which is a main factor that accounts for changes in the american family structure 1.casual friends 2.close friends 3.opposite sex friends 4.personal friends
  50. Algebra

    The first term in the sequence is -2 and the fifth term is -1/8 what is the common ratio
  51. Algebra

    The sum of one number and 2 times a second number is 57. The sum of the two numbers is 18
  52. math

    10-2[10-3(2+1)] --------------- 12/3(2)
  53. math

    i did this on my hw but it saided itt waz wrong
  54. Language arts

    which word in the following sentence is a conjunction? Wow, aren't computer amazing? A. Aren't B. Wow C. Computers D. amazing Ms. Sue please help
  55. Science

    eating a bannana
  56. history

    It’s B
  57. math

    2005 2006 2007 2008 Plant 1 20 4 25 10 Plant 2 25 5 5 48 Plant 3 20 8 20 32 Plant 4 43 10 10 47 Plant 5 40 11 15 48 For which year is the mean the BEST measure of central tendency? A) 2005 B) 2006 C) 2007 D) 2008
  58. Math

    Steve is that the answer
  59. Physics

    Thx
  60. Physics

    A desk fan has three (approximately) rectangular sheets of 15.8 cm long and 5 cm wide, each with a mass of 140 g. The fan is rotating at a constant angular speed of 19.8 rad / s when the power is turned off. Due to friction the angular velocity of the fan slows down in a ...
  61. Physics

    A uniform disc of 2.98 kg is mounted so that it can rotate in the horizontal plane around a frictionless axis through its center of mass. The angular velocity of the disc at the start is 140 rpm. A hollow cylinder with thin walls and the same radius as the disc is released ...
  62. chemistry

    What is the mass of BaCl2 contained in 250 mL of solution since after the addition of 40.00 ml of AgNO3 0.1020M to 25.00 mL of the BACl2 solution, the excess solution of AgNO3 consumed 15.00 ml of NH4SCN 0.09800 M
  63. physics

    A 1000 kg car traveling is at 40.0 m/ s. To avoid hitting a second car the driver slams on his brakes. The brakes provide a constant friction force of 8000 N. ( a) Find the minimum distance that the brakes should be applied in order to avoid a collision with the vehicle in ...
  64. Check Please !!! Re-written

    Got it!!!! Thanks!
  65. Check Please !!! Re-written

    Although I am not part of the LGTQQ community, as an outsider, I personally know someone that this bill would relate to. People not in the LGTQQ community may not understand the political forces that impact people in the LGTQQ community and therefore may not fight for them ...
  66. Check Please !!! Re-written

    Many hide their identity and live in isolation or even fear. Others experience discrimination, and even violence, when being themselves.
  67. Check Please !!! Re-written

    for being who they are
  68. Check Please !!! Re-written

    My bill will fully recognize, include, respect, and protect them from unfair criminalization, exclusion, employment discrimination, health disparities, and homelessness and other factors that make LGTQQ vulnerable to the impact of inequality of all LGTQQ community. This bill ...
  69. Check Please !!! Re-written

    Huh
  70. Check Please !!! Re-written

    I am an aspiring human rights advocate attending the University of Baltimore. I am an individual with many social and political concerns. I am invested in this because I believe…that regardless of individual’s sexual multiplicities and social identities, everyone ...
  71. eNGLISH

    HELP-REWORD!!! OF DOES IT SOUND CLEAR? Although I am not part of the LGBTQ community, as an outsider, I personally know someone that this bill would relate to. People not in the LGTQQ community may not understand the political forces that impact people in the LGTQQ community ...
  72. Social Studies-Land Use

    A person is right
  73. Math

    ABC has vertices A(0, 6), B(4, 6), and C(1, 3). Find the orthocenter of ABC?
  74. Math

    Ms. Sue my question is how to write it out.
  75. character education

    intellectual superiority
  76. History

    I can confirm, it's D
  77. Physics

    An electron is acted upon by a force of 3.50×10?15 N due to an electric field. Find the acceleration this force produces in each case: The electron's speed is 6.00 km/s . =3.84*10^15 The electron's speed is 2.60×108 m/s and the force is parallel to the ...
  78. math

    1000000 + 100000000000000
  79. Physics

    I used the formula of conservation of mechanical energy. Where my spring is PE at start and that's equal to PE at the top + KE + Friction F
  80. Physics

    A block with a weight of 3.7 N is launched along a slope upwards by a spring with k = 2.25 kN / m. The slope makes an angle of 30° with the horizontal and has a vertical height of 0.75 m (measured from the starting point of the block). When the block is released, the ...
  81. Physics

    A placekicker kicks a football with a velocity of 35 m/sec and an angle of 25? above the horizontal. When the football is 10 m off the ground, a. What is the horizontal velocity of the ball? b. What is the vertical velocity of the ball? c. What is the total velocity of the ...
  82. Physics

    A flight attendant pulls her 66 N flight bag a distance of 359 m along a level airport floor at a constant velocity. The force she exerts is 42 N at an angle of 54° above the horizontal.
  83. math

    idk I have to identify the property of real numbers and that was one of my problems. I don't understand any of the properties. please steve.
  84. math

    what is the property of 7(2-p)=14-7p
  85. math

    Thanks, i can write that is 25^2 right?!?
  86. math

    omg thank you!! 40^2 is 1600. Wow that helps alot!!!
  87. math

    i dont know why there is a little 2 next to the numbers its the beginning of my lesson
  88. math

    7^2 + 24^2 =??? Please someone help!!!!!
  89. math

    thank you steve
  90. math

    An old lady has 125 cats. Seven of them are old, 9 of them are her favorite, 5 of them are both (old and favorite). How many of are neither old nor favorite?
  91. physics

    A sled loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope inclined at 20.0o above the horizontal. The sled moves a distance of 17.0 m on a horizontal surface. The coefficient of kinetic friction between the sled and surface is 0.420 . (a) ...
  92. Finite Math

    An urn contains 55 green marbles and 44 red marbles. One marble is? removed, its color? noted, and not replaced. A second marble is removed and its color is noted. ?(a) What is the probability that both marbles are green?? red?? ?(b) What is the probability that exactly one ...
  93. social studies

    do you know the test answers/
  94. New Mexico history

    so what's the answer I read the page and I could not find anything useful. Ms.sue plz help
  95. Chemistry

    Silver(I) nitrate and sodium sulfate react to form silver(I) sulfate and sodium nitrate. Suppose 49.02 mL of 0.040 M silver(I) nitrate solution and 39.48 mL of 0.10 M sodium sulfate solution are mixed. What is the maximum number of grams of silver(I) sulfate that can be made?
  96. Trigonometry

    Quick question, how would I solve this through trig
  97. Trigonometry

    Quick question, how would I solve this through trig
  98. Trigonometry

    Two students are passing a ball back and forth, allowing it to bounce once between them. If one students bounce passes the ball from a height of 1.4 m and it bounces 3 m away from the students, where should the second student stand to catch the ball at a height of 1.2 m? ...
  99. Pre Calculus

    Find all $2 \times 2$ matrices $\bold{A}$ that have the property that for any $2 \times 2$ matrix $\bold{B}$, \[\bold{A} \bold{B} = \bold{B} \bold{A}.\]
  100. Pre Calculus

    For a vector $\bold{v}$, let $\bold{r}$ be the reflection of $\bold{v}$ over the line \[\bold{x} = t \begin{pmatrix} 2 \\ -1 \end{pmatrix}.\] [asy] unitsize(1 cm); pair O, V, R; O = (0,0); V = (3,1); R = reflect(O,(2,-1))*(V); xaxis(-2,4); yaxis(-3,1); draw((-1)*(2,-1)--2*(2,-...