1. trigonomery

    Show that the following statement is true by transforming the left side into the right side. sin θ tan θ = csc θ
  2. Trig

    Show that the following statement is an identity by transforming the left side into the right side. sinθ(cscθ − sinθ)= cos^2 θ
  3. proof by mathematical induction

    subject is PreCalulus. 2^(k+3) = and < (k+3)! i know how to do proving using mathematical induction when its just an equal sign, but I don't understand what to do when its an inequality. thank you!!! Here is what I would do Step 1: check if it is true for
  4. Math

    Verify the identities by transforming the left-hand side into the right-hand side. Show work. (tan^2X)/(1-cos^2x)= sec^2x HELP
  5. Math

    Four balances are shown where the two sides of each contain exactly the same amount of weight. The first balance has 4 squares, 1 triangle and 1 ball on the left side, right side has 2 diamonds. The second balance has 1 triangle and 1 square on the left
  6. Math(Please Help Assignment Due Today)

    Four balances are shown where the two sides of each contain exactly the same amount of weight. The first balance has 4 squares, 1 triangle and 1 ball on the left side, right side has 2 diamonds. The second balance has 1 triangle and 1 square on the left
  7. Algebra II

    In an induction proof of the statement 4+7+10+...+(3n-1)=n(3n+5)/2 the first step is to show that the statement is true for some integers n. Note:3(1)+1=1[3(1)+5]/2 is true. Select the steps required to complete the proof. A)Show that the statement is true
  8. Math: Intro to Vectors

    Left side = right side check type of question. x - (x + y)/2 = (x - y)/2 What I did was times the x in the left side by 2. I got: =(2x-x+y)/2 which equals =(x+y)/2 But the left side is (x-y)/2. What am I doing wrong?
  9. Math

    I need to show that the right side equals the left side but I am having a little trouble simplifying. k(2k+1) +(4(k+1)-1) = (k+1)(2(k+1)+1) k^2+2k+3 For the right side?
  10. Math

    I need to show that the right side equals the left side but I am having a little trouble simplifying. k(2k+1) +(4(k+1)-1) = (k+1)(2(k+1)+1) k^2+2k+3 For the right side?
  11. math

    The scale balanced when n+20=80 Suppose the left side becomes n+3 How can I change the right side so that n+3=____ is equivalent to n+20=80 How can I change the right side to get an equivalent equation my choices are A. Add blank to the right side B.
  12. Physics

    A 60.9 kg climber is using a rope to cross between two peaks of a mountain as shown in the figure below. He pauses to rest near the right peak. Assume that the right side rope and the left side rope make angles of 26.7° and 14.33° with respect to the
  13. math

    how do you isolate a variable? my teacher gave us questions and we are suppose to isolate the variable x PLEASE HELP! x + 3y = 11 You isolate it by moving everyting to the other side except that variable. Thus x + 3y = 11 is the same as x = -3y + 11 If tne
  14. algebra

    I cant get this one nither I tried like 4 times to get right answer. 5x+12-3x=-2x-13-x x=-5 5x+12-3x=-2x-13-x First, let's get the unknowns on one side of the equation and the knowns on the other side. 5x - 3x + 2x + x = -12 - 13 5 x = -25 x = - 5 ok I
  15. algebra

    I need help in identifying a graph. I tried textbook and plugging no. with no luck All numbers on right side of (y) line. Bottom of parabola is on x=4 and y=-4, going up f(x) dot is on x=3, y=-3 (left line going up); right line going up is x=5, y= -3;
  16. math

    1)Find the third iterate x3 of f(x)=x2-4 for an initial value of x0=2 A)-4 B)4 C)12 D)-12 I chose C 2)Use Pascal's triangle to expand:(w-x)5 This ones long so I chose w5-5w4x+10w3x3-10w2x4+5wx4-x5 3)Use the binomial Theorem to find the third term in the
  17. Math

    How could Jason solve for T in this equation? T - 8 = 40 A) add 8 to the left side B) add 8 to the left side and subtract 8 from the right side C) add 8 to each side D) divide each side by 8
  18. Cosine Law

    Find all missing sides/angles. Round each answer to the nearest unit. Angles/sides ABC (left to right) 1) Angle c= 70 deg side b= 28 yd side c= 26 yd 2) Side a= 18 cm Side b= 24 cm Side c= 28 cm
  19. Science

    Mirror images are formed by light from the object's right side reflecting from the right side of the mirror and light from the object's left side reflecting from the left side of the mirror. True or False please help! thanks
  20. Health please check my answer

    Please check my answer thanks Is this statement True or False A 16 -year old patient is having problems with a swollen gland on the left side of her neck, The physican is most likely to use visualization to determine if the gland has any atypical
  21. algebra

    Set the equations equal to each other so you can determine when the car and bus are the same distance from the intersection. Collect all the terms on the left side of this new equation., leaving 0 on the right side. Factor the expression on the left side
  22. Calculus

    Let f be defined by f(x)= 4x^3-2m, x is less than or equal to -1 , 7x^2+5m , x is greater than -1. Piece wise function. a. Find lim-->-1 from the right side(in term of m) B. Find lim-->-1 from the left side (in term of m). I don't get what do they mean by
  23. Math HELP!

    What is the height of the tree? Its a right angle triangle but its laying on its left side. The right side is 52 ft. the left side is 38 ft. The tree is standing as tall as the bottom. A. 64.4 ft. B. 35.5 ft. C. 37.4 ft. D. 90 ft. Is the answer A? Thanks
  24. Physics

    Suppose you are asked to determine the perimeter of a seven-sided irregular figure. You make the following measurements: Side 1 = 3.2 m Side 2 = 4.8 m Side 3 = 2.000 m Side 4 = 8.94 m Side 5 = 11 m Side 6 = 7.566 m Side 7 = 4.0 m How many significant
  25. math

    whats -2y+3(4-y)=12-5y? -2Y+(12-3Y)=12-5y -5Y+12=12-5Y 0=0 i do not like reading but now i am sleepy all day and need help with my reading homework as Maricela showed, the left side = right side. So it is an identity and true for any value of y you choose.
  26. Algebra

    (x/x-2)+(x-1/x+1)=-1 So far I was able to get it to x + (x-1) = -(x-2)(x+1) through cross multiplying, but I'm kinda lost with what to do now. Should I convert the right side to a polynomial and add the left side, then bring it all to 1 side so it = 0?
  27. Physics

    A 74.1 kg climber is using a rope to cross between two peaks of a mountain as shown in the figure below. He pauses to rest near the right peak. Assume that the right side rope and the left side rope make angles of 48.0° and 11.16° with respect to the
  28. Math

    Solve for X: 4x - 2 +7 = 17 collect like terms on left hand side 4x + 5 = 17 subtract 5 from each side 4x = 12 divide by 4 on each side x = 3
  29. Geomentry

    What is the converse of the theorem statement: If a line parallel to one side of a triangle intersects the other two sides, then it divides the two sides proportionally. If two sides of a triangle are divided in the same proportion, then the line
  30. social studies

    " The Supreme Court has to censor and limit our first amendment rights." - determine whether the statement above is true or false. - pick one side of the argument - use cases and precedents as examples - have a thesis statement - have a concluding
  31. math

    If the answer is 1-2/3m what is the question> How can you solve equations like these? 9r + 7 = 4r - 8 Need to get the r on one side. 1st- subtract 4r from the right side of the = sign. What you do to one side do to the other. 9r-4r+7=4r-4r-8. 5r+7=-8 2nd-
  32. Math

    The figure below shows two triangles. Which statement about the triangles is true? i.imgsafe(.)org/c60dcd0488(.)jpg The triangles can be proven congruent by: 1. Angle angle side
  33. MATH

    i need help filling this out! 4x-10=32-3x 4x-10+____=32-3x+22 ____-10+____=32+_____ ___=___ ___=___ x=___ ok you need to solve for x. remember the rule, whatever you do on the left side, you do to the right side and vice versa. on the second step, they add
  34. Math

    Place absolute value bars in the proper location on the left side of the ecpression to make the statement true. Jean deposited a check for $625 and $29.95 and used her debit card to pay for a purchase of $57.65. How has her account balance changed?
  35. geometry/calculus

    Use Cavalieri's Principle to find the area of the region. In the example we see a "leaning tower" with base 'a' and height 'b'. The left side of the leaning rectangle is given by y = x^2, the right side given by y = (x - a)^2 the answer to this problem is
  36. Geometry

    To the nearest meter, find the length of side DE in triangle DEF, given angle F=54 degrees, side DF=70 m, and side EF=50 m. Please show work!
  37. 8th grade

    Please help me how you get the answer. PLEASE I NEED HELP. A triangle sail has a perimeter of 25 m. Side a is 2 m shorter than twice side b, and side c is 3 m longer than side b. Find the length of each side. Thank you ver much for helping me
  38. Math

    Solve for the length of the unknown side in the following right triangle. (Side AC is the hypotenuse.) Round your answer to two places, where applicable. Side AB ? Side BC=12 Side AC=19
  39. math

    IS THERE ANYONE OUT THERE THAT MAY BE ALBE TO HELP ME PLEASE! Place absolute value bars in the proper location on the left side of the expression to make the statement true. Jean deposited a check for $625 wrote two for $68.74 and $29.95 and used her debit
  40. Geometry Inscribed Angles Multiple Choice

    Find the measure of angle BAC. {There's an image of a circle with an angle from the top left side going to the bottom of the right side. Point A is the point at the top left side starting the angle, and B is at the bottom and point C is at the bottom right
  41. Math Help

    The triangles are similar. Find the value of x. The triangles are right triangles. Triangle 1 has 18 on the left side and 24 on the left side. Triangle 2 has x on the left side and 6 on the right side. The triangles are facing each other. A. 6 B. 8 C. 30
  42. Please help trig proof

    ((cotx+cscx)/(sinx+tanx))=cotxcscx Please prove left side equal to right side, only doing doing work on the left.
  43. PLEASE HELP!!!!

    ((cotx+cscx)/(sinx+tanx))=cotxcscx Please prove left side equal to right side, only doing doing work on the left.
  44. 8th grade math

    the first side of a triangle measures 3 cm longer then the second side the third side is 4cm shorter then twice the second side the perimeter is 31cm. how long is each side?
  45. 9th grade math

    the triange is 31cm, side 1 and side 2 have equal lenghts, while side 3 is one centimeter shorter than twice then length of side 1, how long is each side?
  46. Math

    Cross multiplication means that you multiply? the numerator on the left side by the denominator on the right side, and the denominator on the side by the numerator on the right side (is this corect)
  47. Algebra

    I don't understand how to do this problems: Solve for the variable r, C=2PIr (PI is the pi symbol thing then r is next to it) and this problem solve for the variable l, S=B+1/2Pl please help :) When you solve for a variable, you want that "letter" on one
  48. Geometry - Conditional Statements/Proof

    Rewire each statement as two if-then statements that are converses of each other. 18. Two angles are supplementary if and only if the sum of their measures is 180. 20. (x-4)(x+6) = 0 if and only if x = 4 or x = -6 22. Theorem 2-5 may also be worded in this
  49. trig...again

    gahh i cant figure this one out either. you have you verify the identity only using one side of the equation: sec^2x*sin^2x+sec^2x=-1 this identity cannot possible be true. on the left side you are adding 2 squared quantities, how can that result be
  50. math

    Heather is solving an equation by graphing the expressions on both sides. If her graph intersects at an infinite number of points, which statement could describe the equation Heather is attempting to solve? A. One side of the equation is a constant, and
  51. Math

    Mr Shen wished to enter the orange kite competition with an innovative kite of his own design. He did tests that showed an irregular quadrilateral design was best. The longest side (A) was twice the length of the shortest side (C). Side B was one and
  52. math

    aiden knows the length of only one side of his garden. He says he will be able to find the area knowing only one side. Explain how this can be true. If there's only one side then Aiden should multiple it...? But if so, how many times 2, 3, 4...?
  53. Math

    The two triangle-shaped gardens are congruent. Find all of the missing side lengths and angle measures. Show any necessary work. (Triangle) • On the left, a triangle is shown with a lower horizontal side labeled 7.9 yards, a vertical right side labeled
  54. TRIANGLE HELP!!!! (MATH!)

    The two triangles above are similar. a. Find x using the ratio of the sides 12 cm and 16 cm: x/20 = 12/16 Show your work. b. Find x using the ratio of the sides 6 cm and 8 cm. Show your work. c. Explain why the answers to (a) and (b) should be the same.
  55. Geometry

    Theorem: A line parallel to one side of a triangle divides the other two proportionately. In the figure below, segment DE is parallel to segment BC and segment EF is parallel to AB: The figure shows triangle ABC with segments DE and DF. Point D is on side
  56. algebra

    Can someone please help me with these problems? Please and thank you. 1)Solve the equation: (1/x)+[x/(x+2)]=1 2)Simplify the complex fraction: 3-(3/4) ------- (1/2)-(1/4) (1/x)+ [x/(x+2)] = 1 Convert left side to the sum of fractional terms with common
  57. Math

    Hello, Having trouble with this one... Solve the inequality: (2x-3)(4x)+x^2=>(3x+4)^2 I did 2x-3*4x 9x^2-12x on the left side on the right side: 9x^2+24x+16 I substracted everything on the right side over to the left and made it => zero
  58. Algebra1

    how do i sove this problem -12q+4=8q-6 -12+4=8q-6 First you want to get the variable isolated on one side. To do that, you can do one of two things. We'll put the variable on the right side. You need to put the -12q on the right. Do you know how to do
  59. math, algebra

    Problem: A formula for a football player's rushing average r with a total of y yards rushed in n carries of the ball is r=y/n. Solve for n. I have no other information this is how its in the book how do i even solve for n if theres no numbers. You don't
  60. Algebra

    A triangle has a perimeter of 32 inches. The medium side is 7 more than the short side, and the longest side is3 times the length of the shortest side. Find the shortest side.
  61. math/algebra

    I have a triangle one side = 3 side 2 = square root5 - square root 3 side 3 = square root 5 + square root 3 I can get the answer 3 and I know I am missing the square root part of the equation can you help me by showing how this problem is worked so I can
  62. Math

    What should Edna do to solve for m in the equation? 65 = m + 29 A) add 29 to each side B) add 29 to the left side C) subtract 29 from the right side D) subtract 29 from each side
  63. Algebra

    A triangle has a perimeter of 32 inches. The medium side is 7 more than the short side, and the longest side is 3 times the length of the shortest side. Find the shortest side. 32=s+m+l m=s+7 l=3s 32=s+m+l 32=s+s+7+3s 32=5s+7 -7 -7 25/5s=5s/5s 5=s
  64. Algebra

    A triangle has a perimeter of 47 inches. The medium side is 5 more than the short side, and the longest side is 4 times the length of the shortest side. Find the shortest side.
  65. Math help!

    Which of the triangles described in the table is a right triangle. Table Triangle Q, Side 1=25 Side 2=10 Side 3=15. Triangle R, Side 1=26 Side 2=20 Side 3=46. Triangle S, Side 1=25 Side 2=20 Side 3=1,025. Triangle T, Side 1=25 Side 2=26 Side 3=650. A. Q B.
  66. Math

    Which of the triangles described in the table is a right triangle. Table Triangle Q, Side 1=25 Side 2=10 Side 3=15. Triangle R, Side 1=26 Side 2=20 Side 3=46. Triangle S, Side 1=25 Side 2=20 Side 3=1,025. Triangle T, Side 1=25 Side 2=26 Side 3=650. A. Q B.
  67. math

    Consider an equilateral triangle with points located at each vertex and at each midpoint of a side. (See picture.) This problem uses the set of numbers {1, 2, 3, 4, 5, 6}. Place one number at each point. Call the sum of the three numbers along any one side
  68. physics

    How does the volume of a cube change if the length of one side is increased by one unit, another side is decreased by one unit, and the third side is left unchanged? How does changing the shape of a container affect the volume of the matter?
  69. algabra

    the sum of a the digits in a two digit # is 11. if the digits are reversed, the new # is 45 more than the original #. What is this # !!! i need help AB is the two digit number A+B=11 10B + A= 10A + B - 45 solve. Ok, first. You would first bring both sides
  70. Biology

    1. Objects viewed from the left fall on which side of the eyes retina? 2. From the retina following the optic nerve to the appropriate area of the brain for interpretation, for example A. Which side of the brain interprets objects viewed from the left
  71. Science

    What do all the words in the left hand cloumn have in common that is not shared by any of the qords in the right column? Thanks i hope you could help!! plus this too, i forgot to type it in ramp hammer screw faucet chisel axle doorstop hinge With only a
  72. geometry

    If side b=4 inches, side c=12 inches find side a. Show all work and round to the nearest tenth
  73. math neeeeed help plez help

    trapezoid ABCD is congruent to trapezoid EFGH. Which statement is true. A- B= 15cm D-C 9cm A. side EF is 15cm B. side GH is 9cm C. side EF is 9cm D. the height of trapezoid EFGH is 9cm
  74. math help

    Can someone explain to me the following step by step , i 've looked in websites , plus the book and i want to understand how this problem has this answer. Problem #1 Find the inverse if it exists, for the matrix. -2_1_3 3_-1_0 -4_2_0 Answer is: -4_6_5
  75. English

    Ironic statement Don'trust your heart because it's not on the right side. Answer: true
  76. Math

    I am in dire need of assistance. Can anyone tell me the forumula/solution to transforming inqualities into equivalent inequalities with y alone on one side? I really don't understand this.
  77. geometry

    in the digram below,prove that trianglel lmn is similar to trangle lopnafter ur proof, slove for the length of side mn(side lm=4,side Mo=8,and side op=15).
  78. Math

    I NEED TO KNOW HOW TO DO THE WORK FOR THIS QUESTION!!!!!!!!!!!!!!!!!!! Find the length of each side(triangle) first side-x second side-x+2 third side-x+3 Perimeter=35m "answer = 10m, 12m, 13m" ^^^^how do you get this???
  79. Math

    One side of a triangular banner is 1 ½ times longer than the second side and 2 cm shorter than the third side. The perimeter of the triangle is 98 cm. How long is the shortest side?
  80. Math

    2x^2+9x-5 is the area of a rectangle and one side of the rectangle is x+5, What is the other side of the rectangle? A volume of a cube is 15625cm cubed. What is the length from point A to B in the cube? Point A is on the front bottom right corner and point
  81. Math

    Select all the true statements about identities. A) You may use proven identities to prove other identities. B) An identity is true only for restricted values of the variables. C) You can prove an identity by graphing the side to the left of the equal
  82. math

    Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional
  83. logic

    Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional
  84. math

    Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional
  85. Chemistry

    Using the change in oxidation number method, balance the redox reaction shown below. (NO2^2)+ (MnO4^-)---> (NO3^-)+ Mn^2+ Divide into half reactions. I will show you how to do MnO4^- and you do the other one. MnO4^- ==> Mn^+2 Step 2. Determine the
  86. Math

    How would you find the value of m in this problem? 4m + 2 = -2 + 4m Well, I brought the 2 over to the right side by subtracting. That left me with 4m = -4 + 4m. Then, I subtracted the 4m from the right and did to the other side to get 0 = -4. Is there no
  87. functions math

    hi can any one please help me solve this question? logbase2x+logbase2 3= 3 i factored the left side but i have no idea what to do with the right side.
  88. geometry

    Find the value of x. x = 18x = 22.5x = 30x = 54 is like a like two line almost forming an X and on the left side it says (x+90) and on the right side it says 4x
  89. Proof by contradiction

    Prove that there exists no positive real number such that: 4x^2+1/4x
  90. Algebra

    i tried to figure out if 5/3 would be a solution for 6x^2-11x-35=0. i got -0.21 on the left side. is this close enough to 0 that it would count because my book said it was indeed equal to the right side.
  91. Calculus

    Verify the identity. (Left side to right side) {(sinu+sinv)/(cosu+cosv)}=tan1/2(u+v)
  92. Math...HELP i dont understand this problem!

    Given 1/3 Y÷1/2 X=4 Discuss its meaning. Create a shape for X and for Y that will make this true. Draw and label the shapes, then illustrate how the quotient was obtained. Your drawing must be neat and accurate. Can individual pieces of a traditional
  93. Math

    Aiden know the lenght of only one side of his garden. He says he will be able to find the area knowing only one side. Explain how this can be true.
  94. geometry

    The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in
  95. geometry

    The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in
  96. Math

    On a airplane there are two seats on the left side in each row and three seats on the right side. There are 90 seats on the right side of the plane. A. how many seats are on the left side of the plane? B. How many seats are there altogether
  97. Math

    On an airplane,there are two seats on the left side in each row and three seats on the right side. There are 90 seats on the right side of the plane. a. How many seats are on the left side of the plane? b. How many seats are there altogether?
  98. Math

    On an airplane, there are two seats on the left side in each row and three seats on the right side. There are 90 seats on the right side of the plane. How many seats are on the left side of the plane? How many seats are there altogether?
  99. calculus

    For trigonometric substitution to solve the above integral, fill in the blanks below using the picture of the triangle given. integral (x^3)/(sqrt(25+9x^2)) dx / l / l / l / l / l / l / l / l / l side A / l / l --------- side B *** sorry hard to draw on
  100. Int Algebra

    The difference of two numbers is 7. The sum of the numbers is -1. What are the numbers? I've come up with the following equations: x-y=7 and x+y=-1. I can't seem to solve because there are no numbers on the left side of the equations. Any thoughts? Let's