Friday

August 22, 2014

August 22, 2014

Number of results: 5,039

**Math**

A triangle and trapezoid share a 15 inch base and a height of 10 inches. For what values of b is the area of the trapezoid less than twice the area of the triangle?
*October 3, 2011 by Jessica*

**geometry**

you have a square wiht an 8-inch side. you want to draw a triangle with a base 3 times greater that a side of the square. what is the altitude of the triangle?
*October 12, 2011 by uzziah*

**Maths**

triangle ABC is right angled at A. AD is perpendicularto BC. If AB= 5cm,BC= 13cm and AC=12 cm.find the area of triangle ABC. Also find the length of AD.
*December 6, 2011 by leon*

**geometry**

The lengths of three sides of a triangle are given. Describe each triangle as acute. right. or obtuse. square root 5, 3, square root 14.
*February 12, 2012 by Rachel*

**math**

A Triangle has sides 4,8,and 11. In a similar triangle the shortest side is 8 and the longest side is x. a) Write a proportion that models the situation. b) Solve the proportion for x.
*March 27, 2013 by Felicia*

**MATH Calculus Homework PLEASE HELP!**

Let T be the triangle 1≤x≤2, 0≤y≤3x-3. Find the volume that results by rotating the triangle T around the line x=-1.
*May 9, 2013 by Claire*

**Angles,Lines and Triangles**

The sum of two angles of a triangle is 116 degree and their differences is 24 degree.Find the measure of each angle of the triangle.
*June 17, 2014 by Harsh*

**math**

A triangle has sides of lengths 48 feet, 55 feet, and 74 feet. Which statement is true concerning this triangle?
*March 2, 2011 by Lo*

**Math**

What is the best estimate of the measure of: Right triangle, A,B,C, if there are no degrees. Ans. 15 degrees. How do you get this if there are no degrees on the triangle??
*November 30, 2012 by Edna*

**Math help plz**

Identify three different situations where you could apply the Pythagorean Theorem. help.. thank u The Pythagorean Theorem describes a right-triangle. Therefore it can be applied anywhere a triangle exists.
*October 29, 2006 by Linsey*

**Calculus**

The measurement of one side of a right triangle is found to be 9.5 inches, and the angle opposite that side is 26°45' with a possible error of 1.5'. Approximate the percent error in computing the area of the triangle.
*October 28, 2009 by Calvin*

**Algebra**

The sides of a square are one-third as long as the sides of an equilateral triangle. The difference between their perimeters is 20 centimeters. How long is each side of the triangle? Define your variables. Thx
*March 8, 2010 by Renee*

**algebra**

Find n so that the square and triangle have the same perimeter. The square is 8n+6, the triangle is 13n+2 on two of the sides and 30n-28 on the other side. This is the question that I have for homework,I don't understand it. Thanks
*September 29, 2010 by art*

**Math**

the right triangle ABC, the altitude from vertex C divides the hypotenuse into two segments, one of length 2 and the other of length 16. Find the perimeter of triangle ABC.
*December 7, 2013 by Lily*

**math**

Tom drew a triangle with angle measures of 130°, 24°, and 26°. How would you classify Tom’s triangle based on the measures of the angles?
*May 24, 2010 by Anonymous*

**8th grade**

Right triangle ABC is similar to triangle XYZ because angle B is congruent to angle Y. If angle C equals 27°,what is the measure of angle Z?
*June 23, 2010 by Anonymous*

**Geometry**

Rectangle ABCD has diagonals AC and BD. E is the point of intersection of the two diagonals. If the area of triangle AEB is 8, what is the area of triangle ACD?
*November 19, 2010 by Jen*

**geometry**

Indirect proof given triangle ABC,<B is an obtuse angle prove there can only be one obtuse angle in triangle.
*December 17, 2010 by Alfa*

**maths**

i have got to find the perimeter of a triangle that has one side of 8x-7w another that says 3x+9y and then another that says 3y+5w whats the perimeter of the triangle ??? please help
*January 21, 2011 by sophie *

**math**

A triangle whose sides are 5,12, and 13 inches is similar to a traingle whose longest side is 39 inches. What is the perimeter of the larger triangle?
*February 23, 2011 by erika*

**Algebra II**

The height of a right triangle is 7 inches greater than the length of its base. If the area of the triangle is 15 square inches, find the base.
*July 1, 2011 by Nicole*

**geometry**

the base of an isoscels triangle is 4x long. the altitude to the base is 3x cm long. Find the length of one other side of the triangle
*February 23, 2012 by sara*

**>_<**

The 3 sided triangle has an area of 14 in^2. Determine the lengths of the sides of the triangles.Remember that the area of a triangle is ½ bh. bottom length= x+3 side length= x
*May 20, 2012 by Anonymous*

**Math**

In triangle XYZ, |XY|= 8 cm and |YZ|=6m. The area of triangle XYZ is 12cm^2. The |<PQR|= 30 degrees, 150 degrees. Find the two possible |XZ|
*October 18, 2012 by Anonymous*

**math URGENT!!**

the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. please answer and show how u did it step by step please!!!!
*October 25, 2012 by dan*

**Geometry-8th gr**

Can you please help me with this question? 1.) Given: triangle ABC ~ triangle XYZ, m<A= 50 degrees, m<X= (2x +5y) degrees, m>Z=( 55 + y) degrees, and that m<B=(102-x) degrees. Find m<Z. Thanks.
*January 31, 2013 by Mona*

**geometry**

Triangle ABC and triangle XYZ are similar. If AB, BC, and AC are 7 inches, 9 inches, and 10 inches respectively, and XY is 9 inches, find XZ to the nearest tenth of an inch.
*February 3, 2013 by Anonymous*

**maths-areas **

in triangle ABC P, Q AND R ARE the mid points of side AB, BC, CA.prove that area of parallelogram APQR=( 1/2)* area of triangle[ABC]
*March 15, 2013 by anoynomous*

**algebra 1**

write an algebraic expression that could be used to represent the perimeter of the triangle below. write the expression in simplest form. triangle 3x+1 3-x 2x+4 A: 6x+2 B: 5x-8 C: 4x+8 D: 6x-2
*March 28, 2013 by Anonymous*

**math**

the height of a triangle is 5 cm more than the length of the base. if the area of a triangle is 133 cm^2 find the hight nad length of the base
*March 31, 2013 by luz*

**math**

A triangle has vertices with coordinates (2, 0), (3, -1), and (-2, -5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image.
*December 19, 2013 by james*

**math**

A triangle has vertices with coordinates (2, 0), (3, -1), and (-2, -5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image.
*December 19, 2013 by james*

**Math**

If a circle is inscribed in a triangle with vertex angles 30o - 60o - 90o , then what is the area of the triangle divided by the area of the circle?
*May 9, 2014 by Judy*

**Trigonometry**

Usa a right triangle to write each expression as an algebraic expression. Assume the referenced angle is theta, and x is positive and in the domain of the given inverse trig. function. Label the triangle. 1. sec^sq(tan^-1x) 2. sin(arccot x/(sqrt)1-x^2)
*May 12, 2010 by David M.*

**Math - check my answers :)**

1. Find the amplitude, if it exists, and the period of y=tan 1/4È Answer: No limits in amplitude, y=tanÈ/4 period is 4pi 2.Solve x = Arctan(-sqrt3) Work: Pythagorean theorem: sqrt(1^2+3)= sqrt4=2 in length. Triangle is 1, sqrt 3,2 Answer: -60° 3. In triangleABC, A = 35°, a = ...
*January 30, 2009 by Grace*

**Math repost for Jose**

Math - jose, Sunday, October 14, 2007 at 12:55pm <EAB and < ABC are right angles,AB=4,BC=6,AE=8,AC and BE interset at D.What is the differens the area of triangle ADE and triangle BDC
*October 14, 2007 by Ms. Sue*

**geometry**

The coordinates of point A on triangle ABC are (2, -4). What would be the image of point A after triangle ABC is reflected over the y-axis andthen rotated about the origin 180 degree?
*May 5, 2012 by Piggy*

**Math 2 questions**

1.5.652 rounded to the nearest tenth. 2. The two triangles below are similar. Find the value of x. triangle 1: base: 4 height: 10 triangle 2: base: x height: 20 what would X be? my guess 8.
*March 10, 2014 by anonymous*

**geometry**

Rewrite the statement in if-then form. All equilateral triangles have three congruent sides. a. a figure has three congruent sides if and only if it is an equilateral triangle. b. a figure is an equilateral triangle if and only if it has three congruent sides. c. if a figure ...
*October 2, 2007 by alan*

**math pls**

The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (d) Find the sizes of the other two angles of triangle PQR. (e) Find the length of the median drawn to side PQ. (f) Find the length of the bisector of angle R. (g) ...
*April 21, 2010 by Maryann*

**geometry/math pls help**

The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (1) Find the sizes of the other two angles of triangle PQR. (2) Find the length of the median drawn to side PQ. (3) Find the length of the bisector of angle R. (4) ...
*April 21, 2010 by Maryann*

**math**

questions 21-25 match one definition cmparing denominate numbers with different units is it parallel unit price rate isosceles decimal
*April 11, 2010 by Anonymous*

**calculus**

find the volume of the solid whose cross section is perpendicular to the x axis from isosceles right triangles and has a leg that run from the lines y=-x to the line y=.5x
*April 11, 2011 by Eli*

**math**

Explain how the triangle similarity postulates and theorems are alike and how they differ from triangle congruence postulates Name something with a height that would be difficult to measure directly. Describe how you could measure it indirectly
*January 25, 2008 by help plz*

**Trigonometry**

Hi, this question concerns a right angled triangle. If I know the hypotenuse of the triangle is 16cm and I know the adjacent side to an unknown angle is 14cm which trigonometric ratio would I need to find the unknown angle? Many thanks
*July 4, 2010 by Sam*

**geometry**

Plot the points (2,4), (-1,4) and (2,1) and connect them to form a triangle. What rule would you use to translate the triangle 5 units to the right? Write your rule in the form H(x,y) = (?,?). Draw the translated figure and label its coordinates.
*January 30, 2012 by Anonymous*

**geometry**

Plot the points (2,4), (-1,4) and (2,1) and connect them to form a triangle. What rule would you use to translate the triangle 5 units to the right? Write your rule in the form H(x,y) = (?,?). Draw the translated figure and label its coordinates
*February 6, 2012 by Anonymous*

**Yorktwon**

Use a straightedge and a compass to construct a triangle with 2 sides having the same length. Describe the process you used. Now use a protractor to measure each angle of the triangle. What are the measures of each angle?
*February 17, 2012 by Anonymous*

**physics**

two equal masses of 5kg are placed on two vertex of an an equilateral triangle and 20 kg mass on the third.each side is 20 cm long. find the force acting on 1 kg mass kept at the centroid of the triangle.
*July 27, 2012 by abhinaw*

**Help triangle angles!**

Points D, E, and F are the midpoints of sides BC, CA, and AB of ABC, respectively, and CZ is an altitude of the triangle. If <BAC=71, <ABC=39, and <BCA=70, then what is <EZD+<EFD in degrees? Please help I tried making a picture but its not helping....please help!
*December 19, 2012 by Knights*

**Calculus**

The measurements of the base and altitude of a triangle are found to be 36 and 50 centimeters, respectively. The possible error in each measurement is 0.25 centimeter. Use differentials to approximate the possible propagated error in computing the area of the triangle.
*December 16, 2013 by Lindsay*

**chemistry**

For the reaction H2(g) +S(s)->H2S(s), Triangle H= -20.2 kJ and triangle S= 43.1 J/K. WHen will the reaction be spontaneous? I know that it has to be negative to be spontaneous but i dont exactly know how to answer this question.
*April 24, 2008 by trista*

**algebra**

The vertices's of triangle ABC are A(-1,2), b(0,3), and c(3,1). Determine the vertices A', B', and C' of the image of triangle ABC after a reflection across the x-axis.
*September 1, 2008 by kareem*

**geometry**

Right triangle ABC is similar to triangle XYZ because angle B is congruent to angle Y. If angle C equals 33°,what is the measure of angle Z?
*March 4, 2010 by Jesus*

**MATH**

there is a triangle with a base of 2.4 m and both sides are 1.7 m. it is a right triangle. what the heck is the answer? i have an answer sheet and i know the answer is 41 but how do you get that answer?
*March 4, 2010 by j*

**Math**

a side of a square is 10 meters longer than the side of a equalaterial triangle. The perimeter of the square is 3 times the perimter of the triangle
*October 25, 2010 by Edden*

**11th grade**

Joe wants to draw a triangle.the lengths are 5cm,12cm,and 13cm. A:will joe be able to draw the triangle?why or why not?
*December 13, 2010 by Anonymous*

**math**

area of a triangle is equal of the area of a square of side 60 m. Find the side of the triangle whose corresponding altitude is 90 m.
*March 2, 2011 by prabhpreet singh*

**math**

A right triangle has a hypotenuse equal to 25 m and one leg equal to 17 m. What is the approximate value of the second leg of the triangle?
*March 2, 2011 by Lo*

**algebra**

Write a function rule for the area of a triangle whose base is 4 ft more than the height. What is the area of the triangle when its height is 6 ft?
*March 27, 2011 by thalia*

**geometry**

an equilateral triangle of side 20cm is inscribed in a circle.calculate the distance of a side of the triangle from th centre of the circle.
*March 30, 2011 by victor *

**Math**

The sides of a triangle are three consecutive odd integers. The perimeter of the triangle is 39 inches. What is the length of each of the three sides?
*January 3, 2013 by ANONYMOUS*

**geometry**

Triangle ABC is similar to triangle DEF. The sides of ABC are 5,8 and 11. What is the length of the shorttest side of DEF if its perimeter is 60?
*June 18, 2013 by mily*

**Math**

An equilateral triangle and a regular hexagon have equal perimeters. What is the area of the triangle, if the area of the hexagon is 120? I don't get it
*December 13, 2013 by Kizzy *

**geometry and combinatorics**

An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...
*April 30, 2013 by sanji*

**geometry**

ABCD is an isosceles trapezoid. mAngle SymbolABC= 3x+10 and mAngle SymbolBAD=4x-5. Solve for x.
*May 12, 2011 by benajmin*

**MATHS**

Find the lengths of the missing sides in the triangle. Write your answers as integers or as decimals rounded to the nearest tenth. The diagram is not drawn to scale. triangle has sides 7, Y and X and 45 degree angle can someone show me how to do this? im supposed to use trig ...
*February 13, 2013 by Corie*

**geometry**

If the perimeter of the smaller triangle is 9 cm, what is the perimeter of the larger triangle?
*February 10, 2011 by Anonymous*

**Math**

The perimeter of triangle B is how many times greater than the perimeter of triangle A?
*June 12, 2012 by jessica*

**area of triangle**

the base of a triangle is 9 cm the area is 18 cm squared what is the height?
*April 9, 2013 by Wyatt*

**Geometry**

If in given triangle ABC, AB = 8 cm and BC = 6 cm, then what is the length of AC in the triangle ABC?
*October 18, 2013 by Anonymous*

**Math**

If 1 side of a triangle is 10 inches and the same side in a 2nd triangle is 20 inches. A 2nd side is 4 inches in the 1st triangle what is the same side in the 2nd triangle? My answer is 8 inches
*January 31, 2014 by Steve*

**Math**

If 1 side of a triangle is 10 inches and the same side in a 2nd triangle is 20 inches. A 2nd side is 4 inches in the 1st triangle what is the same side in the 2nd triangle? My answer is 8 inches
*January 31, 2014 by Steve*

**Geometry**

What is the hypothesis of the statement below? If two triangles are isosceles right triangles,then they are similar.
*June 3, 2009 by Sally*

**Math **

the diagonals of an isosceles trapezoid are each 17,the altitude is 8,and the upper base is 9.Find the perimrter of the trapezoid.
*January 5, 2010 by JEFF BOMB*

**Geometry**

ABCD is an isosceles trapezoid. Angle CDA = 80. Find the measure of angle BAD.
*July 11, 2011 by Cookie*

**Geometry **

what is the value of x in the isosceles trapezoid below? the top is 10x degrees and the bottom is (3x+11) degrees
*October 20, 2011 by Lorraine *

**Math ttriangles**

how would I find the hieght of a isocscles triangle if the base was 20 and the area was 240? To find the height of an isocsceles triangle With the area at 240 and the base at 20 aren't you supposed to divide 240 by 20? If so what is your answer? The area of a triangle is 1/2 ...
*February 19, 2007 by Sara*

**algebra**

The sides of a triangle have measures of x, x, and y, and the perimeter of the triangle is 46. The measure y is 4 centimeters longer than the measure x. Write two equations which represent the two sentences. Solve the system you wrote for this using any technique.
*September 1, 2010 by brandon*

**calculus optimization max min**

find the dimensions of the rectangular area of maximum area which can be laid out within a triangle of base 12 and altitude 4 if one side of the rectangle lies on the base of the triangle thanks
*October 19, 2010 by Oswaldo*

**geometry**

The lengths of the sides of a right triangle are a and b, and the hypotenuse is c. Find the area of the triangle. b = 2 in.; c = 6 in. A = sq. in. Click once to select an item at the bottom of the problem. Click again to drop the item in its correct place. Eraser
*January 26, 2012 by Anonymous*

**math**

The hypotenuse of a triangle is 13 inches long. Which of the follwoing pairsof measurements could be correct for the lengths of the other two sides of triangle: a:2.5 and 4 inches, b:2.5 and 6 inches,c:5 and 8 inches,d:5 and 12 inches
*August 12, 2013 by rally*

**Geometry**

D is the mid-point of side AB of the triangle ABC, E is mid-point of CD and F is mid-point of AE. Prove that: Area (triangle AFD) =Area (triangle ABC).
*January 18, 2011 by Aman*

**math/geometry**

complete the statements: To find the length of the hypotenuse of a 45-45-90 triangle, multiply the length of one of the legs by:? Could the answer be .5??? to find the length of the shorter leg of a 30-60-90 triangle, multiply the length of the longer leg by:? To find the ...
*December 5, 2009 by Lauren*

**geometry**

An isosceles trapezoid has base angles equal to 45 and bases of lengths 6 and 12. Find the area of the trapezoid.
*March 8, 2011 by john*

**Geometry **

In triangle abc angle a=3x+40 angle b= 8x+35 and angle c=10x Which is the longest side of the triangle, ab, ac or bc?
*April 12, 2012 by Mirielle*

**Mathematical Studies**

A right triangle has three sides known to be (x-5) (2x+1) and 2x. By use of the pythagorean theorem show how the sides of the triangle can yield the equation: x^2-14x+24=0 this is my work below: (x-5)^2+(2x+1)^2=2x^2 which expanded is: (x^2-10x+25)+(4x^2+4x+1)=2x^2 i don't ...
*January 7, 2008 by Andre*

**7th grade Pre algebra( math honors0**

triangle ABC is smilar to triangle FED Ab= 12 Ac=15 De=4 df=5 1. write three equal ratios to show correspnding sides are prosportional. 2. find the value of bc 3. find the value of ef.
*November 29, 2010 by panda*

**trigonometry.**

In a right triangle sinA= 3/5 and C=17. Find a and b. Be sure to draw a right triangle and letter it properly. how can i solve the math in this problem. i know i would have to use the Pythagoream Theorem but i dont know how to set the problem up first.
*January 10, 2011 by anon*

**algebra**

Cut a piece of paper to form a triangle shape. Tear off the three corners of the triangle. Then put the three corners together. Describe what you see. What mathematical truth does this activity illustrate? Explain
*February 10, 2012 by lucy*

**algebra **

If you cut a piece of paper to form a triangle shape, and tear off the three corners of the triangle and then put the three corners together what will you see? Please describe. What mathematical truth does this activity illustrate?
*February 12, 2012 by Lucy needs help now*

**Pre-Calculus **

Two sides of a triangle are x units and y units in length. The angle between them is theta. Prove that the area of the triangle is 1/2xysin(theta). I'm not sure how to do this question, I tried drawing a picture but I'm still not understanding it.
*September 28, 2012 by Tyson*

**Pre-Calculus **

Two sides of a triangle are x units and y units in length. The angle between them is theta. Prove that the area of the triangle is 1/2xysin(theta). I'm not sure how to do this question, I tried drawing a picture but I'm still not understanding it.
*September 28, 2012 by Tyson*

**Physics (vectors)**

Please help me with this question. I have a triangle that is not a right triangle with sides A, B, and C.(no values).The arrow's heads of A and B are joined and the arrow's head of C is in the tail of B. How do you find the resultant, the vector equation, and the direction of ...
*February 15, 2013 by Kathy*

**Math(Please Help!!!)**

Triangle NQP is an equilateral triangle with the measure of angle N=5x-2y and the measure of angle P=x+2y. Find the values of x and y.
*November 4, 2008 by Abbey*

**MATH**

THE BASE AND HEIGHT OF A TRIANGLE ARE IN THE RATIO 5:3. IF THE AREA OF THE TRIANGLE IS 67.5 SQUARE METRE; FIND ITS BASE AND HEIGHT.
*October 23, 2011 by RIYA*

**MATH**

The base and height of a triangle are in the ratio 5:3.if the area of the triangle is 67.5 square metre.find its base and height.
*October 23, 2011 by RIYA*

**maths**

find the base of an isocelus triangle base 12cm and its peremeter is32cm.find the area of the triangle
*May 21, 2012 by jennie*

**pre algebra **

Triangle XYZ has vertices X(- 1, 1), Y(- 3, 1), and Z( -2, 5). Reflect triangle XYZ in the y-axis. Find the vertices of the image
*May 31, 2012 by amy*

**math**

An equilateral triangle and a regular hexagon share a common side. The perimeter of the triangle is 20 cm. What is the perimeter of the hexagon?
*July 24, 2014 by Anonymous*

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