Sunday

August 28, 2016
Number of results: 6,481

**Math**

A triangle has sides w/ lengths of 3x, 5x, and 8x. All of the sides add up to 180. Express the perimeter of the triangle in terms of x. PLEASE HELP!!!!!
*January 2, 2011 by Gigi*

**geometry**

the area of the first triangle is 22 sq feet. if the scale factor of two similar traingles if 3, what is the area of that second triangle>?
*January 18, 2011 by dylan*

**Math**

The perimeter of two equalater triangles are in ration 2:3. If the perimeter of the smaller triangle is 16 cm what is the measure of a side of the larger triangle?
*April 7, 2011 by xAlgebrax*

**geometry**

the base of a triangle is 3cm greater thanthe height.the area is 27cm find the heightand base of the triangle
*October 1, 2011 by Anonymous*

**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
*November 25, 2011 by Gary*

**geometry**

In a right _angled triangle one of the acute angles is 20 dgrees greater than the other.find the angles of the triangle
*April 21, 2012 by Tobi*

**Geometry **

Triangle ΔABC has vertices A(2,5), B(8,1) and C(-2,-1) and is a right triangle. If the slope of AB is -2/3 and the slope of AC is 3/2, are the lines parallel, perpendicular or neither?
*July 14, 2012 by Math*

**math**

Triangle ΔABC has vertices A(2,5), B(8,1) and C(-2,-1) and is a right triangle. If the slope of AB is -2/3 and the slope of AC is 3/2, are the lines parallel, perpendicular or neither?
*July 14, 2012 by ashley*

**Trigonometry**

Two sides of a right triangle are 8, 15 and 17 units. if each side is doubled, how many sqare units will the area of the new triangle be?
*September 8, 2012 by Roy*

**mathURGENT!!!!**

the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. what is the answer and can u explain how u got it step by step? please...
*October 22, 2012 by dan*

**maths**

2 equal sides of a triangle are 4m less than 3 times the third side find the sides of the triangle if the perimeter is 55cm.
*December 27, 2012 by adis*

**Maths**

Triangle ABC has lengths AB=14, AC=18 and also a given angle of ∠BAC=30∘. What is the area of triangle ABC?
*April 12, 2013 by Ian*

**GEOMETRY TANGENTS **

Triangle ACE is a circumscribed triangle. Points B, D and F are the points of tangency. If AC= 16 and AE is 9 cm and CE = 15 cm . Find AD, FE and CD HELP PLEASE VERY URGENT
*December 17, 2013 by Keeley*

**Algebra 1 (Reiny)**

The measures of the sides of a triangle are shown as polynomials. The measures are: 2s^3 + 4; 5s; 4s^2 + 1. Write a polynomial to represent the perimeter of the triangle.
*February 20, 2014 by Anonymous*

**math**

Triangle abc and triangle xyz are similar. If ab,bc, and ac are 10, 13, and 14 inches respectively, and xy is 11 inches, find xz to the nearest tenth of an inch.
*February 24, 2014 by chris*

**math**

The altitude of an equilateral triangle is 6 square 3 units long. The length of one side of the triangle is ____ units.
*July 14, 2014 by kyle*

**College Intermediate Algebra **

The base of a triangle is terms of x is 2x+4x+2 and the height is x2+3x-4. What is the area of the triangle. I need to know am if I'm on the right track Area=1/2(2x+4x+2) (x2+3x-4)
*November 1, 2014 by Babydoll07*

**Geometry**

The sides of a triangle have lengths of 9, 11, and 16 units. What is the perimeter of a similar triangle with its longest side 24 units in length?
*January 8, 2015 by Danielle*

**GEOMETRY**

What are the angle measures of the triangle? A right triangle with a hypotenuse measuring 14sqrt3 and legs measuring 7sqrt3 and 21 30°, 60°, and 90° 45°, 45°, and 90° 60°, 60°, and 60° They cannot be determined.
*February 17, 2015 by Anonymous*

**math**

In the triangles, we have XY = 2AX = 2YB and AZ/ZC = 2/3. Find the ratio of the area of triangle YBC to the area of triangle ZYC.
*March 29, 2015 by will*

**math**

The lengths of the sides of a triangle are 13, 14 and 15 units. Find the shortest side of a similar triangle whose longest side is 21.
*July 9, 2015 by Ana*

**maths please help**

how do you find the isoperimetric quotient of an n sided figure? my side lengths are 5cm i have split it in to triangles so 360/n is the central angle then to work out area of singular triangle its 1/2 base times height height is something like tan 180/n =2.5 /height length ...
*October 12, 2006 by Spirit*

**Math...Geometry**

Hello, Can someone please tell me if I worked this out correct and ended with the right answer? Thank You... I need to find the area and Height of this right triangle ( only knowing the lengths of its sides)side 6,5,11... Is this correct? sides 6, 5, 11 -- 6+11+5/2 =22/2=11 A&...
*August 3, 2007 by Mandi*

**Math Question**

Which one of the following pairs of triangle must be similar? a) two isosceles triangles with congruent vertex angles b) two right triangles c) two scalene triangles with congruent bases d) two obtuse triangles a) if the two vertex angles are the same then the other two angles...
*March 4, 2007 by Becky*

**geometry**

the hight of a triangle is four times the length of the base. find the base and height of the triangle if the area is 18 square inches?
*August 24, 2008 by yanet*

**Math**

the ratio of the corresponding side lengths of two triangles is 5 to 3. the perimeter of the larger triangle is 48m. What is the perimeter of the smaller triangle?
*April 9, 2010 by Alexis*

**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
*May 14, 2010 by Marie*

**Math**

The side lengths of a right triangle are each an integral number of units. If one of the legs is 13 units, what is the perimeter of the triangle? Thanks ~Zach
*May 20, 2010 by Zach*

**pre algebra**

the measures of the angles of (triangle) RST are in the ratio 2:3:5. find the measures of each, and classify the triangle as acute, right, obtuse.
*June 16, 2010 by lavena*

**math**

Using the formula for the area of a triangle, A = 1/2 bh, find the area of this triangle pictured. The base is 2x + 16 and the height is 4x. I just don't know how to work the problem.
*January 17, 2011 by Alyssa*

**geometry**

A right triangle has a base that is 2 more than twice the height. Find the length of the base for the triangle. If the area is 30 square units.
*January 31, 2011 by Raj*

**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:
*February 3, 2011 by katrina*

**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
*March 2, 2011 by Hossam Nassar*

**maths**

perimeter of a equilateral triangle is given as 42 cm. Find the perimeter of a shaded part of triangle if the 3 sectors of a circle marked are identical
*March 12, 2011 by hesham*

** geometry **

the perimeter of triangle ABC is 21 units. Give the perimeter of the triangle formed by its midsegments (connecting midpoints of all sides).
*April 3, 2011 by sreve*

**math**

An equilateral triangle is inscribed in a circle. The radius of the circle is 21 in. Determine the side length of the triangle to the nearest 10th of an inch
*June 20, 2011 by Leasha*

**statistics**

A density graph for all the possible speeds between 0 mph and 320 mph is in the shape of a triangle. What is the height of the triangle?
*November 3, 2011 by Bob*

**math**

Use (Triangle) PQR with coordinates P(2, –1), Q(0, 5), and R(–2, 0). Which matrix expression can be used to translate (triangle)PQR 1 unit left and 3 units up?
*January 25, 2012 by danny*

**geometry**

An equilateral triangle has an altitude of 15m. What is the perimeter of the triangle. Could someone please explain how to find perimeter. I believe the answer to be 60 sq rt 3m
*February 13, 2012 by Brandon*

**math**

shape has 4 side: at least one angle measure90 is it a.righ triangle .b.right trapezod c.right triangle b.rhombus
*February 16, 2012 by vannyboo<3*

**geometry**

leg xy of the right triangle is twice as long as leg yz. if the area of the triangle is 36cm to the second power what is the length icm of xy?
*February 22, 2012 by demetra*

**geometry**

The coordinates of the vertices of triangle CDE are C(1,4), D(3,6), and E(7,4). If the triangle is reflected over the line y=3, what are the coordinates of the image of D? I think (3,-6), but not real sure.
*March 5, 2012 by Brandon*

**math**

a triangle has sides 9cm,12cm,18cm.the longest side of a similar triangle measures12cm.what is the length of other sides
*July 31, 2012 by vedant*

**TRIG**

Triangle FGH has vertices F(0, 10), G(10, 0), and HR(1, -1). After rotating triangle FGH counterclockwise about the origin 75º, the coordinates of G' to the nearest hundredth are (2.59, ?).
*October 30, 2012 by karina602*

**Math (Adv. Functions)**

Given that triangle ABC with sides a, b, and c, show that the area of the triangle is given by A = ((a^2)(sinB)(sinC))/((2sin(B+C)))
*December 12, 2012 by KnowsNothing*

**Maths **

2equal sides of triangle r4m less than 3times the third side find the sides of triangle if perimeter is55cm
*December 29, 2012 by Anonymously*

**Geometry**

If x is the midpoint of line vy and wz And the prove is triangle vwx is congruent triangle yzx can you help me solve this using two column prove
*December 5, 2013 by Anonymous *

**Algebra **

If x is the midpoint of line vy and wz And the prove is triangle vwx is congruent triangle yzx can you help me solve this using two column prove
*December 5, 2013 by Anonymous *

**math**

Question 2.2. The height of a triangle is 5 m less than its base. The area of the triangle is 42 m2. Find the length of the base. (Points : 1) 12 m 11 m 8 m 7 m i think it's 12m
*June 11, 2015 by tony*

**Math**

In right triangle ABC above, segment DE is drawn from side AB to AC as shown, forming right triangle ADE. If BC is 24, AB is 12, and BD is 4, what is the length of DE? A.18 B.16 C.15 D.12 E.8
*August 7, 2015 by Anonymous*

**Geometry**

Two similar triangles have a scale factor of 3 : 5. The altitude of the larger triangle is 24 inches. What is the altitude of the smaller triangle?
*May 16, 2016 by Jessica*

**Geometry **

Rectangle ABCD ~ Rectangle EFGH. which similarity postulate or theorem lets you conclude that triangle BCD ~ Triangle FGH
*June 2, 2016 by Gen*

**math-**

how do you find the area of a triangle? 1/2 x B x H (one half times the base length times the height of the triangle)
*February 13, 2007 by jules*

**math**

what is the perimeter of an equilateral triangle if one side of the triangle has the same length as the side of a square with an area of 25?
*November 4, 2008 by kassidy*

**Math**

A(-11,8)B(2,-6) and C(-19,-8) are the vertices of Triangle ABC. N(X,Y) is a point on AC such the BN is Perpendicular to AC. Find Area of Triangle ABC. PLEASE HELP!!!
*January 24, 2009 by Anonymous*

**Geometry**

What is the ratio of the area of triangle XBY to the area of triangle ABC for the given measuremnts, if XYis similar to AC, and BY=2 and BC=4?
*May 17, 2010 by Kaley *

**math**

What is the ratio of the area of triangle XBY to the area of triangle ABC for the given measuremnts, if XYis similar to AC, and BY=2 and BC=4?
*May 18, 2010 by buggy*

**maths**

the sides of a triangle are in the ratio 2 ratio 3ratio 4. if the shortest side measures 6cm,what is the perimeter of the triangle?
*September 24, 2010 by Krtin*

**geometry**

If a triangle has angle measures 15, 120 and 45, and the length of the side between the 15 and 120 angles is 8, what is the area of the triangle?
*February 10, 2011 by Linda*

**geometry**

Find the area of triangle ABC with A = ((-5), 1), B = ((-8), 1), and C = (9, (-8)). Graph the triangle on your own graph paper. Do not include units.
*February 24, 2011 by callie*

**geometry**

An Equilateral triangle (ABC) is inscribed inside a circle. The side lengths of the triangle are 8 cm. What is the radius of the circle?
*March 29, 2011 by Katy*

**Geometry**

The scale factor for two similar triangles is 4 : 3. The perimeter of the smaller triangle is 12. What is the perimeter of the larger triangle?
*April 27, 2011 by Tyler*

**geometry**

In triangle ABC, A (o,o) , <BAC = 30 degree , AC =2 and midpoint of segment AB is (4,0) and if B is on the x axis, find the centroid of triangle ABC
*June 20, 2011 by Lakshmi*

**geometry**

Which composition would produce an image triangle whose area is not equal to the area of the original triangle?
*December 4, 2011 by jen*

**geometry**

the sides of a triangle have lengths 4x+1, 2x+1 and 6x-1. if the lengths of the longest side is 6x-1, what values of x make the triangle obtuse?
*January 19, 2012 by Anonymous*

**Algebra**

the altitude of a triangle is 3m less than half its base. If the area of the triangle is 300 m^2 find the measure of the base.
*February 11, 2012 by Sarah*

**6th grade math**

The vertices of triangle ABC are a(8,23) B(2,2) C(2,8). What are the coordinates of the vertices if the triangle is reflected across the x-axis? is it A(8,2) B(2, -2) C(2, -8)?
*April 6, 2012 by i♥zee*

**geometry**

The scale factor for two similar triangles is 4 : 3. The perimeter of the smaller triangle is 12. What is the perimeter of the larger triangle?
*May 13, 2012 by adeny*

**math**

The scale factor for two similar triangles is 4 : 3. The perimeter of the smaller triangle is 12. What is the perimeter of the larger triangle
*July 5, 2012 by luis*

**math**

The scale factor for two similar triangles is 4 : 3. The perimeter of the smaller triangle is 12. What is the perimeter of the larger triangle
*July 5, 2012 by luis*

**arithmetic **

The measure of two angles of a triangle are 35* and 45*. What is the measure of the third angle of the triangle? A. 95* B. 100* C. 105 D. 110*
*March 19, 2013 by Peltier*

**GEOMETRY TANGENTS **

TRIANGLE ACE IS A CIRCUMSCRIBED TRIANGLE. POINTS B,D AND F ARE POINTS OF TANGENCY . IF AC= 16 AND AE= 9 CM AND CE = 15 CM FIND AD, FE, AND CD. Thank you very mych
*December 17, 2013 by Keeley*

**algebra**

The area of a triangle is 25 cm squared. The base is twice the hight find the hight of a triangle. please help me I cant do it without a help!!!
*June 19, 2016 by Kenshin*

**maths**

a triangle has sides 8cm and 5cm and an angle of 90 degrees between them. Calculate the smallest angle of the triangle.
*January 8, 2014 by shegster*

**Pre calculus**

For the most part, will a law of cosines always be one triangle? As in one triangle to solve?
*March 26, 2014 by Luis *

**TRIANGLE**

length of AB,BC of scalene triangle ABC are 12,8 rerspectively.the size of angle is 59degree.find the length of side AC
*September 25, 2014 by PUNAM*

**Maths **

PQRS is parallelogram and K is the midpoint of the side PQ Prove that area of (triangle PKS )= 1÷2 area of (triangle SKR )
*December 27, 2015 by Anonymous*

**Math **

The side of a triangle have lengths of x, x+4, and 20. Specify those values of x which the triangle is acute with longest side 20.
*February 9, 2016 by Adeline *

**Math**

The area of parallelogram with base 2.5 cm height 3 cm equals to triangle its side length 5 cm Find the height of triangle.
*April 5, 2016 by Mido*

**Maths**

The longest side of a triangle measures 267m if two angles are 37 and 48 find the shortest side of the triangle
*May 11, 2016 by Israel*

**Math**

You have a 4inch by 6inch notecard and you intend to make a triangle out of the notecard by using one long side (call it AB) as the base of your triangle and by then placing the third vertex (point E) somewhere on the opposite side (call it CD). Where should you place point E ...
*September 15, 2011 by Tyler*

**Math**

The perimeter of triangle PQR is 78, PQ=18, triangle PQR ~ triangle STU, AND ST=6. What is the perimeter of triangle STU?
*March 4, 2011 by Anonymous*

**Math**

Can someone show me how to solve these questions. 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? The ground speed of the plane is 266.40. 7. What is the smallest angle in the triangle? 8. What is ...
*March 16, 2014 by Crewniverse*

**Algebra**

A roof truss is in the shape of a triangle with height of x feet and a base of 2x + 1 feet. Write a polynomial A (x) that represents the area of the triangle. Find A (5).
*July 14, 2008 by Don*

**calculus-optimazation**

The sum of the perimeters of an equliateral triangle and square is 10. Find the dimensions of the triangle and square that produce a minimum total area.
*February 25, 2009 by meghan*

**Alge2/trig**

Should the triangle be solved beginning with Laws of Sines or Laws of Cosines. Then solve the triangle and round to the nearest tenth. a=16, b=13, c=10
*March 14, 2009 by Sha*

**Chemistry**

4Al + 3O2->2Al2O3(triangle)H= -1669kj/mol 2Fe + O2 ->2FeO (triangle)H= -822 kj/mol Determine enthalpy change?
*June 6, 2009 by Edna*

**Math**

In right triangle ABC, altitude CD is drawn to hypotenuse AB. If AD equals 4 and AC exceeds DB by 1, find DB. It is from a worksheet about proportions in a right triangle.
*February 21, 2010 by Emily*

**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
*June 20, 2010 by lavena*

**college algebra**

Perimeter of a triangle. The perimeter of a triangle is 195 mm. If the lengths of the sides are consecutive odd integers, find the length of each side.
*August 13, 2010 by Nonnie*

**algebra 1 b**

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 the solution for this as an ordered pair.
*October 26, 2010 by Daniel*

**math**

An equilateral triangle has a perimeter of 33 inches. What would the perimeter of a square whose sides each measure the same length as the side of the triangle?
*December 5, 2011 by chanelle*

**Geometry**

The perimeter of triangle ABC is 29 meters. Line segment AD bisects angle A. Find AB and AC. CD=5cm, DB=4 cm.(triangle angle bisector theorem)
*December 28, 2011 by Lily*

**Calculus**

A right triangle with hypotenuse y and equal legs of size x has a perimeter of 36m. Express the area of the triangle solely in terms of the hypotenuse y.
*February 26, 2012 by Nurcan*

**Geometry**

The length of the longer leg of a 30-60-90 triangle is 24 feet. How do I find the length of the hypotenuse of the triangle? The answer must be a radical in simplest form.
*May 23, 2012 by Bonnie*

**math**

The triangle inscribed within square ABCD has, as its base, side AD, and has a height of 6 cm. If the area of the triangle is 21 cm2, what is the area of the shaded region?
*September 13, 2013 by Anonymous*

**math**

Right triangle DEF has sides that measure x, x, and x squared for the some value of x. What is the area of triangle DEF to the nearest 0.1 square unit?
*April 20, 2014 by Melissa *

**Trigonometry**

Triangle PQR has vertices P(0, 1), Q(0, -4), and R(2, 5). Find the coordinates of R' to the nearest hundredth after rotating triangle PQR counterclockwise about the origin 45º.
*October 17, 2014 by TeeKay*

**Trigonometry**

Triangle PQR has vertices P(0, 1), Q(0, -4), and R(2, 5). Find the coordinates of R' to the nearest hundredth after rotating triangle PQR counterclockwise about the origin 45º.
*October 17, 2014 by Molly*

**Trigonometry**

Triangle PQR has vertices P(0, 1), Q(0, -4), and R(2, 5). Find the coordinates of R' to the nearest hundredth after rotating triangle PQR counterclockwise about the origin 45º.
*October 17, 2014 by Molly*