1. Medical physics

    A silver cube (density of silver is 10 g/cm3) with side length of 3 cm weighs more than an aluminium cube (density of aluminium is 2.96 g/cm3) with side length of 4 cm. The cubes are each suspended by a string and allowed to be completely immersed in two
  2. Math

    In Triangle MNP, the measure of angle M is 24degrees, the measure of angle N is five times the measure of P, find the measure of angle N and angle P.
  3. chemistry

    I need to find a balanced chemical equation for the reaction that occurs when sodium cyanide dissolves in water. So far I have got NaCN + H2O = HCN +NaOH, does not seem balanced to me, any help please. Can't you tell if it is balanced or not? It's a matter
  4. algebra

    Write a ratio in simplified form of the area of the shaded figure to the area of the figure which encloses it. I have a square with height 5w and width 5w. Enclosing it are a right triangle on each side, which have a width of 6 and have the square's height
  5. physics

    The drawing shows an equilateral triangle, each side of which has a length of 4.53 cm. Point charges are fixed to each corner, as shown. The 4.00 C charge experiences a net force due to the charges qA and qB. This net force points vertically downward and
  6. Math

    A support wire to the top of a newly planted tree is 15 m long. It forms an angle of 30 degrees to the ground. On the same side of the tree, a second wire is also attached to the top of the tree, but it makes an angle of 45 degrees to the ground. Determine
  7. Pre Calculus

    A piece of cardboard measuring 13 inches by 11 inches is formed into an open-top box by cutting squares with side length x from each corner and folding up the sides. a. Find a formula for the volume of the box in terms of x b. Find the value for x that
  8. Pre-Calculus

    Squares of side length x are removed from the 4 corners of an 11in by 8.5in piece of paper. The sides are then folded up to create an open-top box. Write a funcion that determines the volume of the box and determine the functions range. How much should be
  9. geometry

    the base of a right triangular prism has a width of 8 inches and a height of 6 inches. the length of the third side of the triangle is 10 inches and the length of the prism is 12 inches. What is the surface area of this prism?
  10. Math

    Did I do this right? The shorter leg of a 30°- 60°- 90° right triangle is 7.5 inches. How long is the longer leg and the hypotenuse? 1) The longer side: 7.5/Sin 60 =b/Sin 30 4.208723391 inches Hypotneuse: 8.6 inches
  11. writing

    I need to write several sentences describing a interaction with a friend or family member about personal finance or credit cards, using five different pronouns in the sentences. Can you please give me some understanding or examples?
  12. Psychology

    You and Taye are discussing the causes of obesity. As an informed person, you have to disagree with your friend when he asserts that a major factor in obesity is A. Gender B. physiology C. environment D. genetic inheritance
  13. Poetry

    2) What is the rhyme scheme of the following poem? He sat upon his brand new bike Waiting for his best friend Mike He couldn’t wait to ride to school Others would say his bike is cool (1point) A a b b A b a b a b c d*** A a b a Better?
  14. com 170

    write several sentences describing a recent interaction with friend or family member about personal financial or credit cards.use at least five different pronouns,and adverbs, and adjectives in your sentences.
  15. Ed. Tech

    What is the rhyme scheme of the following poem? He sat upon his brand new bike Waiting for his best friend Mike. He couldn't wait to ride to school. Others would say his bike is cool. 1. a a b b 2. a b a b 3. a b c d 4. a a b a Is the answer 1?
  16. math

    You and a friend go biking. You bike 12 miles north and 2 miles east. What is the straight-line distance from your starting point? Round answer to the nearest hundredths
  17. Spanish

    Hi, I would like some tips on what to say when you're talking to a friend about what you're packing & need to buy to go on a trip. This is a conversational piece where it is required that we speak out of context as well (talking about the weekend,
  18. Spanish

    If a friend invites you to the movies and you are busy, what would be a appropriate answer? A. Tengo que bailar B. Lo siento , estoy ocupado/ocupada*** C. Estoy muy cansado/cansada D. No quieres
  19. physical science

    I must divide a block-letter shaped L diagram of a piece of land into four lots that are the same size and shape. The perimeter has one number next to each of the 6 sides. The numbers are (clockwise, beginning at the top) 1, 1, 1, 1, 2, 2. Can you help me
  20. math

    A banner in the shape of an isosceles triangle has a base that is 2 inches shorter than either of the equal sides. If the perimeter of the banner is 34 inches, then what is the length of the equal sides?
  21. MATH

    .In <ABC, <A=60,<B=70,<C=50. Points D , E ,F are the mid-pointsmof the sides BC ,AC and AB respectively. Find the measures of the angles of the triangle formed by joining the mid-points of the sides of <ABC.
  22. VHS

    a triangle has sides with lengths of 11 meters, 9 meters, and 7 meters. what type of triangle is it?
  23. math

    A triangle has sides that are 6 inches, 8 inches, and 10 inches long. What kind of triangle is it?
  24. math

    1. a square has a side of 2 decimeters. a new square is formed by joining the midpoints of the sides. If this procedure is reoeated 6 times, what is the perimetet and area of the seventh square 2. find the sum of those numbers between 15 and 810 which have
  25. Maths

    Two observers P and Q 15m apart observe a kite in the same vertical plane and from the same side of the kite.The angle of elevation of the kite from P and Q are 35 degree and 45 degree respectively.Find the height of the kite to the nearest metre.
  26. physics

    The surface shown is a square and has a side length of 14.0 cm. The electric field acting on this area has a magnitude of 180. N/C at an angle of 27.5°. Calculate the electric flux through the shown surface.
  27. Physics

    Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle, as the drawing shows. The magnitude of each of the charges is 4.0 µC, and the lengths of the sides of the
  28. Physics

    Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle, as the drawing shows. The magnitude of each of the charges is 4.0 µC, and the lengths of the sides of the
  29. trig

    If point G(a,b) lies on the terminal side of angle theta in standard position, what is the value of sin(theta) if point G also lies on the unit circle?
  30. math

    AB = 8 cm, AC = 6 cm, AD = 7 cm, CD = 2.82 and CAB=50°. Find the length BC, angle ABC, angle CAD , area of triangle ACD
  31. math

    a class mate belives a triangle can have both a right angle and a obtuse angle. which of the following statements would you use to convince him he is incorrect?
  32. math

    AB = 8 cm, AC = 6 cm, AD = 7 cm, CD = 2.82 and CAB =50°. Find the length BC, angle ABC, angle CAD , area of triangle ACD.
  33. intermediate algebra

    The third angle in an isosceles triangle is 1/2 as large as each of the two base angles. Find the measure of each angle.
  34. intermediate algebra

    The third angle in an isosceles triangle is 1/2 as large as each of the two base angles. Find the measure of each angle.
  35. heeelp MATH

    ABC is a triangle with a right angle at A.M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21,what is CM/MB?
  36. Math (Geometry)

    ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21, what is CM/MB?
  37. Math

    Triangle ABC has a right angle at C. The bisector of an exterior angle at B intersects line AC at D. If AB=13 and BC=5, what is the length of segment BD?
  38. Math

    The third angle in an isosceles triangle is 116° more than twice as large as each of the two base angles. Find the measure of each angle.
  39. Math (Geometry)

    ABC is a triangle with a right angle at A. M and N are points on BC such that AM is the altitude, and AN is the angle bisector of ∠BAC. If CN/NB=21, what is CM/MB?
  40. Math

    If the hypotenuse of a chord on a circle is 8 and it is an isosceles triangle with a 90 degree angle, what is the arc subtended by the angle?
  41. Math

    1. In triangle DEF, m angle D=45, m angle E=63, and EF=24 in. What is DE to the nearest tenth of an inch? A) 30.3 in. B) 15.1 in. C) 32.3 in. D) 10.5 in. Is the Answer A? I'm not quite sure though since i'm confused on this question. If someone could help
  42. algebra

    The second angle of a triangle is three times as large as the first. The third angle is 20 degrees larger than the sum of the first two. What are the measures of the angles?
  43. physics

    a 12.0 kg box is released from the top of smooth incline that is 5.00m long and makes an angle 40 degrees with the horizontal.(a)What will be the acceleration of the box?(b)how long will it take to reach the bottom? Draw out a triangle diagram of the
  44. geometry

    the points A(-5,,4),b(-7,6) and c (5,2) are the coordinates of right angled triangle .which angle is right angle?
  45. Math

    Solve for triangle ABC which have angle A =25.25, angle B =60.51 and a =3.82.Find c
  46. math

    Construct a triangle ABC in which BC = 5.8cm ,angle B= angle C= 30°.
  47. Math

    Given: Right triangle ABC, angle C is right angle Prove: AB is greater than AC
  48. trigo

    A ship sails N 27°10' E for 39 km and then turns N 67°50' for 85 km. What isad the distance and the bearing of the ship from the starting point? >>>So, I have a sketch of one triangle(not a right triangle, then drew 3 right triangles all over it
  49. solid mensuration

    A circle has an area equal to 25 pi sq.cm. Its diameter AB coincides with one of the sides of triangle ACB in which the vertex C lies on the circle. If the triangle has an area equal to 11 sq.cm, find its perimeter. Please include solution. Thanks.
  50. Chemistry

    Hi Everyone, Please Give me two examples of organic compound that have two different functional side groups groups. Please list the functional side groups for each organic compound.
  51. Calculus-1

    Show that there exist a sphere with radius r є(0,1) and a cube with side r + 1/2 with the same volume. (Volume of the sphere with radius r is 4/3πr^3, and the volume of a cube with side a is a^3).
  52. Math 116

    You have a scale. On one side of the scale is a brick. On the other side of the scale is half of a brick and a ¾ lb weight. If the scale is balanced what is the weight of the brick in pounds.
  53. Physics

    Can you please explain further because I don't understand? Posted by Mary on Wednesday, November 14, 2007 at 4:23pm. A wavelength of 625 nm is used in a Young's double-slit experiment. The separation between the slits is d = 1.3 10-5 m. The total width of
  54. Physical Science

    A penny on its side moving at speed v slides off the horizontal surface of a table a vertical distance y from the floor. If the speed is 3.1 m/s and the coffee table is 0.30 m tall, find the distance the coin lands from the base of the table. (Use
  55. chemistry

    2H2 + O2 yield 2H2O , so if i switch it around, 2H2O yield 2H2 + O2. Would it change which one is breaking bond, which one is making bond. So technically is the left side always breaking bond, right side is forming bond
  56. algebra

    Volume of a Box A box is constructed by cutting out square corners of a rectangular piece of cardboard and folding up the sides. If the cutout corners have sides with length x, then the volume of the box is given by the polynomial A box is constructed from
  57. math

    In a triangle, the measure of the second angle is twice the measure of the first angle. The third angle is equal to the sum of the other angles.
  58. geometry

    In the triangle ABC, angle a=46 degrees and angle B=83 degrees. How large is the exterior angle at C?
  59. Math

    One angle of a triangle measures 105degrees and another angle measures 32degrees what is the measurement of the third angle
  60. algebra

    How do I find the measurement of an angle of a triangle if I know what the other two angles are. For example, I know the first is 90 degress, the second angle is 30 degress, but I need to know what the third angle is.
  61. MATH

    1) A cube has a side length of 7 in. What is the volume of the cube? MY ANSWER:21 2) A cube has a side length of 14 meters. What is the volume of the cube? A. 2744 m3 B. 1176 m3 C. 168 m3 D. 42 m3 MY ANSWER: D
  62. Math

    A fence is to be built to enclose a rectangular area of 200 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 13 dollars per foot. Find the length L and the width W
  63. Algebra

    Your friend Mary computes (x5)(x7) and gets and answer of x35. Explain why her answer is incorrect and include the correct answer.
  64. Essay Pointers

    Here is an essay i wrote about A Separate Peace. If someone can tell me what needs to be fixed and stuff. By the way, should I use heck in this essay? My friend said it was too... informal
  65. math

    suppose that we are standing on a bridge 30 feet above a river watching a log (piece of wood) floating toward we. If the angle with the horizontal to the front of the log is 16.7 degree and angle with horizontal to the back of the log is 14 degree, how
  66. physics

    A rocket of mass 4.36 × 105 kg is in flight near earth's surface. Its thrust is directed at an angle of 58.9° above the horizontal and has a magnitude of 9.61 × 106 N. Find the (a) magnitude and (b) direction of the rocket's acceleration. Give the
  67. Physics

    Suppose the water near the top of Niagara Falls has a horizontal speed of 2.3 m/s just before it cascades over the edge of the falls. At what vertical distance below the edge does the velocity vector of the water point downward at a 55° angle below the
  68. physics

    a ball is thrown at a vertical velocity to an angle of 30 degree above the horizontal and rises to a maximum height of 50 meters.if the angle is tripled find the maximum height and the horizontal range of a projectile for the same intial velocity
  69. Geometry Part 2

    A highway makes an angle of 6 with the horizontal.This angle is maintained for a horizontal distance of 5 miles.To the nearest hundredth of a mile, how high does the highway rise in this 5- mile section?Show the steps you use to find the distance.
  70. Chemistry 30

    Complete the following reactions by moving only one proton at a time. Identify the acid (A) and the base (B) on the left-hand side of the equation, and the conjugate acid (CA) and the conjugate base (CB) on the right-hand side of the equation, according to
  71. geometry

    show that the sum of the squares of the lengths of the medians of triangle equals three-fourths the sum of the squares of the lengths of the sides.(hint:place the triangle so that its vertices are at points(-a,0),(b0)and (0,c))
  72. math

    chiang picked 12 apples.she gave 1/6 of the apples to each of her 5 frinds.how many apples did each friend get? p.s.i am in 3rd grade
  73. physics

    A rocket of mass 4.45E+5 kg is in flight. Its thrust is directed at an angle of 51.1° above the horizontal and has a magnitude of 7.64E+6 N. Calculate the magnitude (enter first) and direction of the rocket's acceleration. Give the direction as an angle
  74. Physics

    A rocket of mass 4.45E+5 kg is in flight. Its thrust is directed at an angle of 51.1° above the horizontal and has a magnitude of 7.64E+6 N. Calculate the magnitude (enter first) and direction of the rocket's acceleration. Give the direction as an angle
  75. Chemistry

    Hello! I have a question that leaving me stumped. So E means opposite and Z means together. In order to do this alternate cis/trans arrangement you have to order molecules a priority either 1 and 2. You have to go along either side of double bond and
  76. PHYYYYYSICS 10

    A baseball is thrown horizontally off a 41-m high cliff with a speed of 18 m/s. What will be the angle in degrees between the horizontal direction and the velocity vector of the baseball just before it hits the ground? Assume that the answer will be
  77. English

    When I am talking with my close friend, can I say as follows? (My family members liked it. It is not concerned with my friends.) 1. My family liked it. 2. Our family liked it. 3. Our families liked it. [#1 seems to be right. What about #2? Is #2
  78. algebra

    brad wants to buy flowers for his friend with $21. The daises are $2 each and the roses are $3 dollars each.He buys 3 more daisies then roses. how much did the roses cost?
  79. algebra

    brad wants to buy flowers for his friend with $21. The daises are $2 each and the roses are $3 dollars each.He buys 3 more daisies then roses. how much did the roses cost?
  80. Math

    You are making necklaces for your friends. You have 72 blue beads and 42 red beads. Each friend will riecive an identical necklace, and all your beads must be used
  81. math

    The hypotenuse of a right triangle is 1 cm more than twice the shorter leg, and the longer leg is 9 cm less than three times the shorter leg. Find the lengths of the three sides of the triangle..
  82. Vectors

    A triangle has vertices A(2,3,7), B(0,-3,4) and C(5,2,-4) A) determine the largest angle in the traingle b) determine the area of of the triangle pls tell me how to solve the problem
  83. geometry

    how do you find the height of an isosceles triangle only knowing the lengths of all three bases? EX: There's isosceles triangle ABC with vertex angle B. AB= 5x-28. BC= 2x+11. AC= x+5
  84. Geometry

    A triangle has two congruent angles and an exterior angle with measure 100. Find two possible sets of measures for the angles of the triangle.
  85. math

    Plot the points A(2,2), B(4,6),C(10,-2)Notice that these points are vertices of a right triangle (the angle is 90 degrees). Find the area of the triangle ABC:
  86. math

    The measures of the three angles of a triangle are given. Find the value of x and state whether the triangle is acute, obtuse, or right. x + 10, x − 20, x + 25 I got x is 55 and it is an acute angle. Is that correct?
  87. algrbra/trigonometry

    in triangle ABC, angle a=120, b=10, and c=18. What is the area of triangle ABC tot he nearest square inch?
  88. math

    Triangle JKM has j=28cm, k=17cm, and m=13cm. a. find the measure of the smallest angle b. find the area of the triangle
  89. math

    Tanya and Greg are going skiing. Tanya is a seasoned skier while Greg is a novice, he only skied once before. They have a map that provides the coordinates for the top and bottom of each path. Tanya wants to ski the most challenging path while Greg wants
  90. Math

    Will the values described in each situation be rational or irrational? Select Rational or Irrational to describe each situation.I put "R" and "I" to represent the choices I choose. the length of a rectangle with a rational area and irrational width :R the
  91. Math

    We need to make an open topped box with a square base and fixed volume of 8 cubic feet. The material for the base costs $ 6 per square foot and the material for the side costs $4 per square foot. Write a function for the cost as a function of the length
  92. Math

    Suppose a triangular silk scarf has both of its shortest sides 14 inches long. If the angle between these sides is 110º, what is the area of the scarf? Round your answer to the nearest tenth of a square inch.
  93. calculus

    The ellipse x^2+3y^3=13, has two points when x+-1 . Find the slope of the ellipse at both these points. 2. Thoroughly explain the method you used to find the slope in part 1. What are the strengths and weaknesses of the method you used? 3. Explain whether
  94. geometry

    given: segment AB is paralell to segment DC; segment AB is congruent to segment to DC prove: triangle ABC is congruent to triangle CDA statements: 1. segment AB is congruent to segment DC 2.segment AC is congruent to segment AC 3.segment AB is paralell to
  95. Algebra

    Determine the measure of each exterior angle. The triangle looks like an upside down A with one line running longer at the point. The inside angles are A- 50 and in the next corner 75. In the bottom of the A-letter I need to solve for C and A and the extra
  96. math, algebra

    my question is : on the following i have to graph them i just want to know if i am correct. for : x > 4 the line is going through in a straight line on number 4 in the y axis for: 3x greater than or equal to 2x - 4 the answer is after solving: x is less
  97. english

    identify gerunds and then write how its used:S is subject PN predicate nominative DO direct object OP object of a preposition. 1)CHEERING the team gave me a sore throat 2)Joanna's mother enjoys PRESERVING fruits and vegetables 3)We stopped him from TELLING
  98. pre algebra

    the measure of the angles of triangle RST are the ratio 2:3:5. find the measure of each angle, and classify the triangle as acute, right or straight
  99. math

    in the triangle ABC , AD ray bisects the exterior angle of the triangle at A and intersects CB ray at D . if AB = 6 cm , AC = 8 cm , and BC = 5 cm , find the length of BD line segment
  100. geometry

    please help find answer. very urgent. triangle PQR is a 30-60-90 triangle with right angle Q and segment PQ as the longest. Find the possible coordinates of R if (2,6) and Q (2,-6). please help