1. maths

    the radius of the incircle of a triangle is 2cm. if the area of the triangle is 6 sq.cm, then its perimeter is.
  2. Math

    The vertices of an isosceles triangle are A(3, 6), B(7, 2), and C(4, 3). What is the equation of the triangle's line of symmetry? y= x+1 y= x-1 y= x y = -x+1
  3. Math

    1. Find the area of the triangle. Bottom is 22 ft and inside the triangle is 7 ft. A. 154 ft^2 B. 58 ft^2 C. 77 ft^2 D 38.5 ft^2 Not sure?
  4. maths-

    Find the area of triangle . in a right-angled triangle, the length of the hypotenuse is 65 cm
  5. Physics help please!

    The three 500 g masses in the daigram are connected by massless, rigid rods to form a triangle. What is the triangle's rotational energy (in J) if it rotates at 1.50 rev/s about an axis through the center? (Diagram shows equilateral triangle with 500g
  6. Math Geometry

    there are 2 pentagons the small pentagon has a side that is 3cm while the side on the other larger pentagon is 8cm. the small pentagon has a side x cm while the same side on the larger pentagon is 5cm. would i set up a proportion 3/x = 8/5
  7. Help me please

    Find a number that is decreased by 12 when you form half of the number, explain how you got your answer. It reads to me that n/2 + 12 = n multiply each side by two... n+24=2n subtract n from both sides n-n+24 = 2n-n 24=n check it. Take one half of 24, or
  8. Math

    An artist uses a tile design on a wall that is 6' x 10' tile placed on the border on all four sides. Each tile is a square that measures .5 foot on a side. How many tiles does the artist need for the entire border?
  9. English

    Ms Sue, here is the second and last part, concerning Stevenson's biography. Thank you very much for helping me. 1) Robert Louis Stevenson was born in Edinburgh in 1850. He spent most of his childhood in bed because of his poor health and grew up under the
  10. pre algebra

    you spend a total of 25 minutes typing an e-mail to your friend and writing a letter to your aunt. you can type 60 words per minute and handwrite 20 words a minute. let "m" be the number of minutes you type the e-mail to your friend. write an expression in
  11. Math

    I am to find the area of an equilateral triangle whose side is 5... I know I need to find the highth before I find the area, but I end up with a hight of the square root of 31.25, is this right? if so how do I continue and solve for the area with this kind
  12. Math

    I am to find the area of an equilateral triangle whose side is 5... I know I need to find the highth before I find the area, but I end up with a hight of the square root of 31.25, is this right? if so how do I continue and solve for the area with this kind
  13. math

    A right rectangle and a right triangle prism have the same height. If the lenght of the side of the rectangle base is twice the width, explain how to determine the area of the triangular base in terms of the rectangle base length.
  14. math

    a right rectangle and a right triangle prism have the same height. If the lenght of the side of the rectangle base is twice the width, explain how to determine the area of the triangular base in terms of the rectangle base length.
  15. Math

    The angles of a triangle are in the ratio of 2:6:7 .the complement Of the smallest angle of the triangle is, explain. Answer=66
  16. Math

    The radius of the inscribed circle is 5. If the length of the hypotenuse of the right triangle ABC is 19, what is the perimeter of the triangle?
  17. Math

    In Triangle XYZ, what is the cosine ratio of <X? (Hint: Find the length of XY) The Numbers In The Triangle Are 7.5 & 6
  18. Geometry

    Write a coordinate proof to show that triangle FGH congruent triangle FDC
  19. Math

    Triangle ABC is a right triangle. If AB = 3 and AC = 7, find BC. Leave your answer in simplest radical form.
  20. geometry

    place each given figure in a coordinate plane. what are the coordinates of each vertex? a) a right triangle b) an isosceles triangle
  21. geometry

    Determine wether triangle deef is cogruent to triangle pqr given the coordinates of the verticles. D(-6,1),E(-1,-4),P(0,5),Q(7,6),R(5,0)
  22. math(Please help!!!)

    Triangle PQR is a 30-60-90 triangle with right angle Q and segment PQ as the longer leg. Find the possible coordinates of R if P(2,6) and Q(2,-6).
  23. Calculus

    An isosceles triangle, whose base is the interval from (0,0) to (c,0), has its vertex on the graph of f(x)=12-x^2. For what value of c does the triangle have maximum area?
  24. geometry

    In triangle ABC, BC=40m , AB=50m and Angle A=53 degree. Determine the area of a triangle.
  25. Geometry

    Determine whether triangle DEF is congruent to triangle PQR given the coordinates of the vertices. Explain. D(-6,1) E(1,2) F(-1,-4) P(0,5) Q(7,6) R(5,0)
  26. Math

    TriangleFGH is an obtuse triangle. The greatest angle in the triangle has a measure of (6d)degrees. What are the possible values of "d"?
  27. math

    Let triangle ABC be a triangle such that angle ACB is 135 degrees. Prove that AB^2 = AC^2 + BC^2 - (Root 2) x AC x BC
  28. Math

    If the bisector of the vertical angle of the triangle bisects the base prove that the triangle is isosceles?
  29. math

    If the angles of a triangle arc in the ratio of 5:6:7, the triangle is Acute Obtuse Right Isosceles Equilateral
  30. math

    Susie drew a triangle with angles that measure 47, 43. and 90 degrees. What type of triangle did she draw?
  31. Math

    the base of a triangle is the same as the height. what least whole number measurement for the triangle so that the area would be greater than144^2
  32. geometry

    How do you find the slope-intercept equation of medians of a triangle and perpendicular bisectors of a triangle?
  33. math help

    The perimeter of triangle RXA is 39, PX=49 and AP=9.Find RX and RA. I think it's under triangle bisector theorem. Help me answer this guys. Thanks.
  34. geo (finals)

    please help! i don't get these problems at all! a(4,3) b(7,4) and c(5,2) are midpoints of a triangle. find the coordinates for the vertices of the triangle!
  35. Geometry

    The measures of the interior angles of a triangle are in the ratio 1:2:3. what is the measure of the smallest angle of the triangle is?
  36. Math

    Triangle PQR is a 30-60-90 triangle with right angle Q and segment PQ as the longer leg. Find the possible coordinates of R if (2,6) and Q(2,-6).
  37. Mathamatics

    O is any point on Diagonal DB OF Parallogram ABCD. Prove that Ar (Triangle OAB) = Ar(Triangle OBC
  38. math

    Two vertices of a triangle are F (1, −4) and G(6, −4). List two possible coordinates of the third vertex so that the triangle has an area of 20 square units.
  39. Physics

    Three charges +2q, -q and -q are placed at the vertices of an equilateral triangle. What is the electric field and the potential at the circumcenter of the triangle?
  40. Maths

    Three circles with radii 1 is circumscribed tightly in an equilateral triangle. Find the perimeter of the triangle
  41. geometry

    2. the dashed triangle is a dilation image of the solid triangle. what is the scale factor (1 point)
  42. math 8

    the measure of one angle of mnois 90 degrees . this means that the triangle can be classified as a -? triangle Would it be obtuse?
  43. Maths

    The perimeter of an isosceles triangle is 28cm. AB =4ycm,AC=(6y-2x+1)cm and BC =(x+2y)cm. Find x and y, state the lengths of the triangle.
  44. geometry

    The base of a right angled triangle is 12cm and its hypotenues is13 cm . Find the area of the triangle.
  45. math

    Let triangle ABC be a triangle such that angle ACB is 135 degrees. Prove that AB^2 = AC^2 + BC^2 - (Root 2) x AC x BC
  46. geometry

    Determine whether triangle PQR is congruent to triangle STU given the coordinates of the vertices. Explain. P(4,0),Q(2,-3)r(-1,4),S(-1,4), t(1,-1),u(4,6)
  47. mathematics

    the base of isoceles triangle is 4/3 cm. the perimeter of the triangle is 4 2/15. what is the length either of the remaining equal size
  48. MATH Calculus Homework #2

    Let T be the triangle 1\le x\le 2, 0\le y\le 3x-3. Find the volume that results by rotating the triangle T around the line x=-1.
  49. Geometry

    Triangle ABC is a Right Triangle If AB=3 and AC=7 find BC. Leave your Answer in Simplest Radical Form.
  50. math

    Lucas is designing a flower garden in the shape of an isosceles right triangle. He has created a scale diagram. The lengths of the perpendicular sides in the scale diagram are 7 cm, and the hypotenuse of the real garden will be 3 m long. What is the area
  51. math

    Which of the following measurements, in centimeters, could be the lengths of the sides of a triangle? Select all that apply. a)3cm,4cm,5cm b)4cm,10cm,14cm c)5cm,11cm,15cm d)6cm,6cm,13cm e)7cm,4cm,12cm f)8cm,10cm,17cm THANK YOU!
  52. math!!

    what does median mean...? median is the middle number when u put them in order from least 2 greatest Or... a median is a line drawn from a vertex of a triangle to the midpoint of its opposite side. Another name for the median in statistics is the 50th
  53. english

    Whats wrong with my essay i got F on this? Critique please Better Friend According to the article, “women have a higher quality when it comes to relationship than men”. Having friends is important because they know our assets and our flaws. In a
  54. english 20

    Pronoun case 20a. My best friend and I are going to Hawaii this summer. 20b. My best friend and me are going to Hawaii this summer. My answer is: is 20a
  55. Math

    You and a friend both take a math examination. You score a 98 out of 100 points and your friend scores 96 out of 100 points. Who scored better? Explain
  56. Algebra

    A physics student stands at the top of hill that has an elevation of 37 meters. He throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y = –0.02x² +
  57. math

    Trent wants to build a rectangular pen for his animals. One side of the pen will be against the barn; the other three sides will be enclosed with wire fencing. If Trent has 400 feet of fencing, what dimensions would maximize the area of the pen?
  58. Algebra

    Okay, i need help. I'm solving linear equations in intermediate algebra. My problem is that I never know which number to subtract first. Ex: 5y-8=-18 To get the right answer (-2), they move they add the 8 to both sides. But on 27w-64=-37 They move the 37
  59. Math-geometry

    . If a spherical Triangle on Earth has an excess of 30 degrees, find the area of this spherical triangle measured in square miles. b. If a spherical triangle on the moon has an excess of 30 degrees, find the area of this spherical triangle in sqare miles.
  60. math

    A softball diamond is a square with sides of 60 feet long. How far is home plate to second base? Round to the nearest tenth if necessary. 60 Home plate, first base, and second base form a right-angled triangle, with home plate to second as the hypotenuse.
  61. Pre Cal.--Check my work?

    Solve the system of equations: x - y - z = 2; x + 2y - 2z = 3; 3x - 2y - 4z = 5? well, you have: 1- x-y-z=2 2- x+2y-2z=3 3- 3x-2y-4z=5 multiply both sides of the equation 1 by 2: x-y-z=2 ===> 2x-2y-2z=4 add this by equation 2: 2x-2y-2z=4 x+2y-2z=3
  62. geometry

    A plane is is flying 225 mph heading S25°W. The wind is blowing S80°E at 60 mph. What is the bearing of the plane? What is the smallest angle of the triangle? What is the largest angle of the triangle? What is the remaining angle of the triangle? What is
  63. Geometry

    A plane is is flying 240 mph heading N60°E. The wind is blowing S30°E at 30 mph. 6. What is ground speed of the plane? 7. What is the smallest angle in the triangle? 8. What is the biggest angle in the triangle? 9. What is the remaining angle in the
  64. Math

    An open box is to be made from a 11 inch by 11 inch piece of cardboad. this box is constructed by cutting squares that measure x inches on each side from the corners of the cardboard and turning up the sides. Use a graphical calculator to find the height
  65. Business Calculus

    A rectangular garden of area 480 square feet is to be surrounded on three sides bya brick wall costing $12 per foot and on one side by a fence costing $5 per foot. Find the dimensions of the garden such that the cost of the materials is minimized.
  66. Calculus

    A company is designing shipping crates and wants the volume of each crate to be 4 cubic feet, and the crate's base to be a square between 1 and 1.5 feet per side. If the material for the bottom costs $5, the sides $3 and the top $1 per square foot. What
  67. Geometry

    We're learning about classifying triangles with Side-Angle-Side, Angle-Side-Angle, etc. I'm kind of confused-- I have the definitions, but when I am shown a picture, I have trouble figuring out which it is. Could you please explain it or provide a link
  68. Geometry

    Which is the hypotenuse-leg theorem? A. If the hypotenuse and one leg of a right triangle are similar to the corresponding parts of another right triangle, then the triangles are congruent. B. If the hypotenuse is congruent to the corresponding part of
  69. physics

    A) A hot air balloon has just lifted off and is rising at the constant rate of 1.70 m/s. Suddenly, one of the passengers realizes she has left her camera on the ground. A friend picks it up and tosses it straight upward with an initial speed of 10.4 m/s.
  70. physics

    Three point charges, two positive and one negative, each having a magnitude of 30 µC are placed at the vertices of an equilateral triangle (43 cm on a side). What is the magnitude of the electrostatic force on one of the positive charges? The value of the
  71. algebra

    Determine the length of the missing side of each right triangle. Show your work. 1)a=15; b=?; c=20 Answer is b= 5√7 2)a=9; b=12; c=? Answer is c= 15 **How do I show my work to come up with each of these two answers? THANK YOU!!
  72. Math-Geometry

    Solve for X using the side-splitting theorem for a triangle: upper left= 6x-10, upper right= 5x, lower left= 4x+8, lower right=4x
  73. geometry

    the ratio of the area of a smaller triangle to the area of a larger triangle is 1:4. if the are of the smaller triangle is 30, find the area of the larger triangle.
  74. geometry

    A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. What is the ground speed of the plane? 2. When you solve the triangle, what is the smallest angle? 3. What is the largest angle of the triangle? 4. What is the remaining angle? 5.
  75. Physics

    A car is traveling on a level horizontal rode comes to a bridge during a storm and finds the bridge washed out. The driver must get to the other side, so he decides to try leaping it with his car. The side of the road the car is on 21.3m above the river,
  76. math

    7/x+5/3x=2/x-5 so lcm=3x(x-5) 21(x-5)+5(x-5)=5x 21x-105+5x-25=5x 26x-130=5x -26x to both sides -130=-21x divide each side by -21 -130/-21 x=6.19 is this correct thanks for checking my work.
  77. Algebra

    A golden rectangle has sides of length 1 and x. When a square with side length 1 is removed from the golden rectangle, the remaining rectangle has the same proportions as the original. Solve for x.
  78. math perimeter

    susans garden fence goes around the entire garden.the fence is a quadrilateral.all of the sides are equal in lenth.one side measures 15 cm. what is the perimeter of the garden
  79. math

    The formula form the surface area of a cube is SA=6s^2 where s represents the length of a side of the cube. What is the surface area of a cube with the sides 4.5 centimeters long?
  80. math

    Estimate the cost of the concrete requred to make a concrete sidewalk shaped as follows. (The sidewalk covers 1/4 of the outer perimeter of a circle - from 3:00 to 6:00. The radius from the center of the circle to the outside perimeter is 20 feet. The
  81. Pre-Algebra

    Can someone help me with this one- Quadrilaterals are a special type of polygon because _______________. A. they always have exactly four sides B. the sum of their interior angles always measures 180° C. they always have opposite sides that are parallel
  82. physics

    From inside your apartment, you watch rain fall straight down at a constant speed of 9 m/s. Your friend L calls you as she is driving toawards the west at a constant of 90 km/hr. What with what velocity does L see the rain fall as she looks out her
  83. maths

    the area of triangle ABC is 38.8cm^2 Work out the length of AC Angle c =54 base=12 (scalene triangle)
  84. 10th grade

    Triangle ABC is an equilateral triangle.AD=10 What is the length of CD? Give your answer to the nearest whole number.
  85. Math

    Triangle ABC is an obtuse triangle with two congruent angles. If m< C = 108 write an expression that represents m<A
  86. math help

    The perimeter of triangle RXA is 39, PX=4 and AP=9.Find RX and RA.  P is at the middle.  I think it's under triangle bisector theorem. Help me answer this guys. Thanks
  87. Math

    Triangle ABC is an acute triangle. If all angles are measured to the hundredths,what is the smallest angle measurement?
  88. math

    Base of a triangle is 12 inches longer than twice the length of altitude x. Write polynomial area of triangle.
  89. Math

    If there are six row in a triangle. What is the total number of cuber in the triangle. My answer is 36 cubes am I correct. If not please explain. Thanks
  90. Math

    Triangle ABC is similar to triangle PQR and their perimeter is 36cm and 24cm respectively . If PQ =10cm find AB.
  91. geometery

    Triangle TUV is the midsegment triange of triangle ABC. Which angel does not necessarily measure 40 degrees?
  92. Calculus

    An isosceles triangle has perimeter 64m. Find the dimensions of this triangle that make its area a maximum
  93. geometry

    Write a paragraph proof for the following given- AD bisects CB and AD is perpendicular to CB. Prove- triangle ACD = triangle ABD
  94. Mathamatics

    OIS ANY POINT ON DIAGONAL DB OF PARALLOGRAM ABCD PROVE THAT, AR(TRIANGLE OAB) = AR(TRIANGLE OBC)
  95. geometry

    In triangle ABC, the lenght of AB is 24. In the triangle, a soccession of midsegments are formed. How do you find the nth stage?
  96. Math help

    The perimeter of triangle RXA is 39, PX=49 and AP=9.Find RX and RA. P is at the middle. I think it's under triangle bisector theorem. Help me answer this guys. Thanks
  97. Kitondo boys

    A triangle has vertices X(2,2) ,Y(4,2)and Z(3,4).The triangle is enlarged by a scale factor 2 through the origin.What are the coordinates of the image?
  98. math

    the graphs of the three equations below form a triangle. find the coordinates of the triangle's vertices. 4x+y=1 2x-y=5 3y+3x=12 show work.
  99. Math

    If the base of an isosceles triangle is decreased by 40% and its height is increased by 10%, then what is the percent change in the area of the triangle?
  100. Geometry

    Given: segment BD bisects angle ABC; AB=BC. Prove: triangle ABD congruent to triangle CBD