1. Geometry

    Find the area of a hexagon with the indicated apothem: 6 sqr root 3 108 sqr root 3 in.^2 432 sqr root 3 in.^2 96 sqr root 3 in.^2 216 sqr root 3 in.^2 Last question, don't know. Please help? Thanks
  2. Algebra2/Trig

    sqr(x^2-4)+(x^2)/x^2+1 I got ((x^2+1)*sqr(x^2-4)+x^2)/x^2+1 But my teacher gave (sqr(x^2-4)+x^2)/x^2+1 I did the problem over again but I can't figure out why my teacher got the answer. Can someone confirm that my teacher is right or am I right? sqr=square
  3. algebra

    sqr root of 3a + 9(sqr root of 27a^3)
  4. Calc

    How close is the semi circle y= sqr.root of 16-x^2 to the point (1, sqr.root 3)? using Optimization
  5. Math

    Find the quotient function f/g for f(x)=sqr(x+1) and g(x)= sqr( x-1). My Answer: sqr(x+1)/sqr( x-1) sqr(x^2-1)/ (x-1) However, I also have to state the restrictions to the domain and range, which I do not know how to do. Could someone please help me?
  6. Math

    Find the quotient function f/g for f(x)=sqr(x+1) and g(x)= sqr( x-1). My Answer: sqr(x+1)/sqr( x-1) sqr(x^2-1)/ (x-1) However, I also have to state the restrictions to the domain and range, which I do not know how to do. Could someone please help me?
  7. Algebra 2

    Ok, so I'm trying to find the inverse of each function. We're learning about Inverse Functions and Relations. The problem is f(x)=sqr.root of x/6 The sqr root is confusing me.
  8. math

    I have a question I have been working on since yesterday and I am not making this up. I couldn't get the right answer. If sin theta = -2/3, which of the following are possible? A: cos theta= -the sqr rt of 5/3 and tan theta =2/3. B: sec theta = 3/the sqr
  9. 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.
  10. Physical chemistry

    help! I am trying to figure out how to convert from equation one to equation two. I have spent two hours on this and cannot figure it out. I would greatly appreciate if someone could help me out on this. Equation1: v= sqr root (3RT/M) with R being the
  11. Algebra

    For what values does the sqr root of 2x = x square root 2 ?
  12. algebra

    Can someone please help me with these problems? Write (27a^-3)^-2/3 in simplest form. Solve log(6x+11)=2. thanks Let me see your work, we can start from there. Alright! :D (27a^-3)^-2/3 =the cubed root of (27a^-3)^-2 =the cubed root of 27^-2a^6 i figured
  13. Pre-Calc

    I need to figure out how to solve the equation x-squared y-squared+xy=1 i have no clue. I would appreciate any help! did you mean (x^2)(y^2) + xy = 1 ??? If so, are you solving for x or y? Suggestion: let xy = a, then you have the equation a^2 + a - 1 = 0
  14. Algebra 2

    f(x) = sqr.root of x/6
  15. algebra

    (sqr root of 2 + 3*sqr root of 5)(sqr root of 2-3*sqr root of 5)
  16. algebra

    write (27a^-3)^(-2/3) in simplest form. solve log(6x+11)=2 please and thanks I am not going to give you the answers. I will be happy to critique your work. In the first, remember that (a^b)^c= a^bc I am not looking for the answers. And I told you: I'm not
  17. math

    What is the domain of f (x) = sqr root of x^2 - 5x - 14?
  18. algebra

    write (27a^-3)^(-2/3) in simplest form. solve log(6x+11)=2 please and thanks I need to see your work on the first. On the second, take the antilog of each side what is the antilog? I'm not quite sure what to do for the first, but this is what I tried to
  19. Math(check)

    Solve 1= (y+3)(2y-2) Use foil on the right side. 1 = 2y^2 +6y -2y -6 so 1 = 2y^2 +4y -6 Now subtract 1 from boths sides giving us 0 = 2y^2 +4y -7 Now we need two numbers that multiply to be 2*(-7) or -14 and add to be 4. There doesn't appear to be any
  20. calculus

    limit as x approaches negative infinity for the function (-x)/(sqr root (x^2-36))
  21. Calculus

    Solve the differential equation, we're using u substitution: dy/dx= 4x + (4x/ sqr root (16-x^2)) Thanks. Please respond!
  22. calc helppppp

    use limits to find and verify all asymptotes in the graph y= sqr root (5+x^2)/(3-x)
  23. calculus

    i tried to find the derivative of this questions but it was way too hard, and i got it wrong on a test.. i need help y=x4/3 - (sqr.root)5x + 4/x
  24. University calculus

    if g(x)=the integral sign (with sin(x^2) on top and 10 at bottom) (1+t) dt, find g'(sqr root pie/2)
  25. calculus

    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) a. f(x)= x-1/x on [1,3] b.f(x)=x^3=x-4 on [-2,3] c. f(x)= x^3 on [-1,2] d. f(x)= Sqr. root of x on [0,4]
  26. Maths

    Find in sqr meters,the area of a sqr of side 16.5 dam
  27. Math (Calculus)

    without any simplification, find the derivative of h(x) Arcsin^4 (3x-1) / (3)^1/2 (square root) I end up with h'(x) = 12Arcsin^3 (3x-1)sqr(3) / 3 (squr(1-(3-x)^2))
  28. TRIG

    Given that tanx = 1/sqr(15) and secx -4/sqr(15) find the value of sinx
  29. math

    I Wanted To Find The Square Root Of (1-2i) But I Didn't Know How To Solve It. My Solution : x+yi = sqr(1-2i) x2-y2+2xyi = 1- 2i x2-y2 = 1 2xy = -2 y = - 1/x x2 - (-1/x) = 1 ] * x2 x4-x2-1 = 0 How To Evaluated (x4-x2-1) ? I Tried To Sol
  30. geometry

    Rays PQ and QR are perpindicular. Point S lies i the interior of angle PQR. If the measure of the angle SQR=4+7a and the measure of angle SQR=9=4a, find the measure of angle of PQS and angle SQR.
  31. algebra 1

    1 over 2 sqr 32 times sqr 2 simplify the expression
  32. Math

    Perform the indicated operations and simplify i^37 sqr-12 x sqr-15
  33. geometry

    Rays PQ and QR are perpindicular. Point S lies on the interior of angle PQR. If m
  34. Inter. Algebra

    square root sign 2x+3 - square root sign x-2 =2 In my head, I worked it as x=3. I did that because only sqr roots that are rational integers can be subtracted to give a whole number. Now, analytic method. I have no idea, I don't see a simple method in
  35. Math

    rays pq and qr are perpendicular. point s lies in the interior of
  36. algebra 1

    sqr 9 over sqr 49 simplify the expression
  37. algebra 1

    sqr 49 over sqr 4 simplify the expression
  38. calculus

    The radius of a right circular cylinder is given by sqr( t + 6) and its height is 1/6 sqr(t) , where t is time in seconds and the dimensions are in inches. Find the rate of change of the volume with respect to time.
  39. Pre-Calculus

    csc theta = (sqr root 5) over 15, find sine theta
  40. algebra 1

    sqr 10 times sqr 16 over sqr 5
  41. Precalculus

    what is the area of a pastry used to cover a slice of bery pie having outer crust arc of 7.6 cm and a central angle of 30 degrees? My answer: 661.88 cm sqr Answer: 55.2 cm sqr Thanks.
  42. Pre Cal (logs)

    I need help with these logs 1: Log underscore4 16X 2: 2 Ln ( X(sqr. root)e 3:5^[2logUnderscore5(3x)] 4:log underscore2 ^[1280-logunderscore2 5) I don't understand how to do them thanks
  43. Pre-Calculus

    csc theta = sqr root of 5, what is cot theta?
  44. Geometry

    What is the value of x? identify the missing justifications, m
  45. Math

    1. Order the numbers from least to greatest. (1point) 5^-3,4/7, sqr 5, 3/8,0.003 My answer: 0.003,4/7,3/8,5^-3,sqr 5
  46. Math sequence

    Let {An} be the sequence defined recursively by A1=sqr(2) and A(n+1) = sqr(2+An) for n is bigger and equal to 1. Show that An < 2. What is An? and how do I find it? Thank you for your time. An is the nth number in the sequence, and is defined by the
  47. Chemistry-check my work

    The equilibrium constant kc for the equation CS2 + 4H2 CH4 +2H2S at 900 C is 27.8. what is the value of kc for the following equation? 1/2CS2 + 2H2 1/2CH4 +H2S sqr root of 278=5.27?
  48. 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
  49. 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
  50. 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
  51. 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
  52. Astronomy

    I have two stars A = 7150K and B = 4850K.A is 20 times brighter than B. Assuming L/Lv is the same for both stars find the ratio ofthe radii of A and B. I have the equation R/R= (L/L)^1/2(T/T)^2. I can do this for each star in terms of solar masses but i am
  53. 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
  54. math

    How do I know that x^2-7=y is a function? thanks you know its a function because its a parabola (x^2) parabolas are functions because there is only one x value per y value. So I know it is a function because it has (x^2)? Is that the rule? If it has x^2,
  55. 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
  56. 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
  57. 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
  58. Algebra2

    Index 3 Sqr Rt y^13 times index 3 sqr rt 81y^14
  59. 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
  60. geometry

    I"m stuck on this question "Rays PQ and QR ae perpendicular.Point S lies in the interior of angle PQR.If angle PQS!=4+7a and angle SQR=9+4a,find angle PQS and angle SQR. PLEASE HELP!!!!
  61. maths/physics

    particle of mass m kilograms is acted on by two forces F[1] and F[2] with magnitudes 3*sqr-root 5 newtons and sqr-root 5 newtons and directions parallel to the vectors i+2j and i-2j respectively. The particle is initially at a position given by the vector
  62. 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,
  63. 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
  64. Algebra

    Rays PQ and QR are perpendicular. Point S lies in the interior of angle PQR. If angle PQS= 4+7a and angle SQR=9+4a, fing angle PQS and angle SQR.
  65. Algebra

    Rays PQ and QR are perpendicular. Point S lies in the interior of angle PQR. If angle PQS= 4+7a and angle SQR=9+4a, fing angle PQS and angle SQR.
  66. 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)
  67. 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
  68. 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
  69. 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.
  70. 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
  71. Geometry

    Rays PQ and QR are perpendicular. p;oint S lies in the interior of angle PQR. If angle PQS equals 4+7a and angle SQR equals 9+4a, find the angle PQS and angle SQR. Can you please help me, I don't understand it.
  72. 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
  73. 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 ,
  74. 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 ,
  75. 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
  76. Calculus

    A rectangle is bounded by the x axis and the semicircle = square root 25-x^2. What length and width should the rectangle have so that its area is a maximum? When I worked the problem out(which is a bit detailed). I started with y = square root 25-x^2 then
  77. Math

    Simplify by taking roots of the numerator and the demoninator. Assume that all expressions under radicals represent positive numbers. The square root of 243x^6/y^20 to the fifth root. Here is what I have so far: the square root of 243x^6 to the fifth root
  78. Algebra 2

    could you walk me thorugh these problems simplfy square root 18 - 3 times sqaure root of 50 plus 5 times the square root of 80 - 2 times the square root of 125 I'm having troubles with the square root of 80 all of the other radicals can be simplfified with
  79. Algebra I

    Am I correct with this using (a-b)^2 (sqrt3)^2-2(sqrt3)(5) +(sqrt5)^2 =3-2sqrt15+5 =8-2sqrt15 If you were doing (sqr(3) + sqr(5))^2 yes, you are right.
  80. Math

    Four students work to find an estimate for square root 27. Who is closest to finding the true estimate? (1 point) Chelsey: "Use square root 16 and square root 25 to estimate." Carley: "I use square root 25 and square root 36." Jamie: "It should be between
  81. math

    Four students work to find an estimate for square root 54. Who is closest to finding the true estimate? (1 point) Rhonda: "Use square root 16 and square root 25 to estimate." Ricardo: "I use square root 25 and square root 36." Riley: "It should be between
  82. geometry

    raise pq and qr are perpendicular point s lies in the interior of angle pqr if measure of the angle pqs equals 4=7a and the measure of angle sqr = 9+4a find the measure of angle pqs and sqr
  83. Math ~CHECK MY ANSWERS~

    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,
  84. horizontal asymptotes

    find the HAs of y = (x-9) / sqr(4x^2 + 3x+ 2) What happens to y as x goes to +/- infinity? Specifically, is y approaching some limit from above or below? ?? I see your question was to just find the horizontal asymptotes and not to evaluate the function's
  85. Algebra

    I am supposed to "write each expression with a rational denominator" 1/thesqrootof 3. I follow the book's explanation, until it suggests dividing the sq. root of 3 by the square root of 3 times the square root of three. I do not understand how that reduces
  86. trigonmetry -math

    cos2acos2b + sqr(sin(a-b)) - sqr(sin(a+b)) = ?
  87. Algebra

    Use the quadratic formula to solve the equation. Give exact answers: 2x^2 -1 = 6x. The choices are: a) -3 + square root(7)/2, -3 - square root(7)/2 b) 3 + square root(11)/2, 3 - square root(11)/2 c) 3 + square root(7)/2, 3 - square root(7)/2 d) -3 + square
  88. math

    simplify square 48/square6 square root(48) is the same as sq root (8) x sq root(6). So, sq root (6) cancel, and you're left with sq root(8). and this simplfies to 2 x sq root (2)
  89. Algebra

    When you're breaking down the square root in the quadratic formula into several parts- say it was the originally the square root of 80 so you break it down to square root of 4 and square root of 20-would the results be added or multiplyed? Because I know
  90. Math

    What is the square root of 12? 3.464 Well, that's true, but you could simplify it in radicals. The square root of 12 is the same as saying the square root of 3 times the square root of 4. The square root of 4 is plus or minus 2, so you could say (I wish I
  91. Physics

    A ball (m = 250g) on the end of string swings in 1.2 m radius that tolerates 20 N. At what speed does the string breaks if a) the rings swings horizontally ? b) the rings swing vertically? I think I got a) right: T=mv2/r ---> v=(sqr)Tr/m v=(sqr)
  92. Math PLEASE HELP ASAP

    -PLEASE INCLUDE SOLUTIONS AND EXPLAIN HOW YOU DID IT PLEASE. *CHALLENGE. 1.SIMPLIFY : SQUARE ROOT OF 16^8+8^4/16^2+16^7 2.EXPRESS 1 + 1/1+SQUARE ROOT OF 2 - 1/1-SQUARE ROOT OF 2 IN THE FORM A+B SQUARE ROOT OF 2, WHERE A AND BARE RATIONAL NUMBERS. FIND A +
  93. Pre-Calculus

    Solve. Express your answer as exact roots. (s+6)^2 = 3/4 Sq root (s+6)^2 = +-sq root 3/4 (s+6) = sq root 3/ 2 s = -6 +- sq root 3 ----------------- 2 (The answer according to the textbook is (-12 +- sq root 3)/2. What error have I made?) Thank you
  94. Roots and Pre-cal

    Find the roots of the function f(x)= x^2 +2x+2 a)-1 + sq root of 2 and -1 - sq root of 2 b) -1 + i and -1 - i c)-1 -2i sq root of 2 and -1-2i sq root of 2 d)-1 +2i and -1-2i The i's are in italics but I can't .make them in italic here for some reason
  95. 7th grade math Ms. Sue please

    2. Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a block? (1 point) 1 foot 2 feet 3 feet 4 feet 3. Which of these numbers can be classified as
  96. Pre-Calculus

    Solve 0 = 3x^2 + 5x -1 by completing the square. Express your answer as exact roots. 3(x^2 + 5/3 + 25/36) = -1 (x+ 5/6)^2 = 37/36 sq root( x + 5/6)^2 = sq root (37/36) x + 5/6 = +- sq root 37/6 x = -5/6 +- square root 37 /6
  97. Calculus

    How do i find the derivative of f(t)= 20- 30/rooot 9 + t^2 heres how i did it f'(x)= 20' - 30/root(9+t^2) ' = 0 - 30/root(9+t^2) ' (Quotient rule) f'(x)= 30' (root(9+t^2) - 30(root(9+t^2) ' f'(x)= -30(0.5(9+t^2)^-0.5) (2t) the answer at the back of the
  98. ALGEBRA

    SIMPLIFY: 5 ROOT OF 6X +4 ROOT OF 6X IS THE ROOT OF 77 IRRATIONAL OR RATIONAL? SIMPLIFY: 8 + ROOT OF 24 DIVIDED BY 2 IS THE ROOT OF 49/100 RATIONAL OR IRRATIONAL AND IS THE ROOT OF 121 RATIONAL OR IRRATONAL? SIMPLIFY: ROOT OF 3X/2 THANKS IN ADVANCE!!!I AM
  99. Stats

    Can someone please show me how to solve this step by step. I'm trying to understand the whole concept but I'm getting confused... Find the sample linear correlation coefficient between x and y: x: 5, 2, 2 y: 7, 4, 7 x^2: 25, 4, 4 y^2: 49, 16, 49 xy: 35,
  100. radicals

    root 3 ^1/4 times root 3 ^ 1/5 the answer is root three ^9/20 i cant seem to figure out why i would have just tought that it would be root three ^ 1/9 when you are multiplying exponents add. What is 1/4 + 1/5 ?