Friday

August 1, 2014

August 1, 2014

**Recent Homework Questions About Geometry**

Post a New Question | Current Questions

**Hard Geometry Problem**

Hi guys. I need a lot of help on this. "Equilateral triangle ABC has centroid G. Triangle A'B'C' is the image of triangle ABC upon a dilation with center G and scale factor -2/3. Let K be the area of the region that is within both triangles. Find K/[ABC]."...
*Friday, August 1, 2014 at 5:22pm*

**Geometry**

OPQRSTUVWX is a regular decagon. A rotation of A degrees about U maps X to R. Given A < 180 degrees, find A. Thought it was 144 but it isn't.
*Thursday, July 31, 2014 at 11:36pm*

**geometry help!! answer all questions!! please**

1) Write the translation that maps P(-4, 2) onto the point P ' (-1, -1)? 2) What are the coordinates of the reflection of the point (5,1) over the line y = x? 3) The coordinate notation for reflection over the y-axis is -?-. 4) If a translation has a coordinate notation of...
*Thursday, July 31, 2014 at 1:49pm*

**Geometry**

Write the translation that maps P(-4, 2) onto the point P ' (-1, -1)? What are the coordinates of the reflection of the point (5,1) over the line y = x? The coordinate notation for reflection over the y-axis is -?-. If a translation has a coordinate notation of (x, y) --&...
*Thursday, July 31, 2014 at 1:41pm*

**geometry **

A rectangle is 14cm wide and 48 cm long. Find the measures of the acute angle between its diagonals. please help
*Tuesday, July 29, 2014 at 8:11pm*

**Geometry**

Crazy hard question I don't get: "A sphere with radius 3 is inscribed in a conical frustum of slant height 10. (The sphere is tangent to both bases and the side of the frustum.) Find the volume of the frustum." I need a proof for this, and I don't know where ...
*Tuesday, July 29, 2014 at 2:32pm*

**geometry**

A bachelor spends one half of his salary on entertainment,one fifth on food,one tenth on clothes and one fifth on rent.What fraction of his salary is left?
*Tuesday, July 29, 2014 at 1:03pm*

**Geometry**

The total area of all the faces of a rectangular prism is 22, and the total length of all its edges is 24. Find the length of the internal diagonal of the prism. Thank you!
*Tuesday, July 29, 2014 at 1:00pm*

**Geometry**

I don't understand any of this :( "What is the area of a trefoil whose horizontal base has length 2?" Please help!!!
*Monday, July 28, 2014 at 7:57pm*

**Chemistry Please Help!!!**

Airbags contain a mixture of sodium azide, potassium nitrate, and silicon dioxide. A sensor detects a head on collision that cause the sodium azide to be ignited and to decompose forming sodium and nitrogen gas. This gas fills a nylon or polyamide bag such that the front face ...
*Friday, July 25, 2014 at 12:55pm*

**geometry**

A number is selected at random from the set {2, 3, 4, … 10}. Which event, by definition, covers the entire sample space of this experiment?
*Thursday, July 24, 2014 at 9:11am*

**geometry**

Points D, E, and F are the midpoints of sides \overline{BC}, \overline{CA}, and \overline{AB} of \triangle ABC, respectively, and \overline{CZ} is an altitude of the triangle. If \angle BAC = 71^\circ, \angle ABC = 39^\circ, and \angle BCA = 70^\circ, then what is \angle EZD+\...
*Wednesday, July 23, 2014 at 4:07pm*

**geometry**

Points D, E, and F are the midpoints of sides \overline{BC}, \overline{CA}, and \overline{AB} of \triangle ABC, respectively, and \overline{CZ} is an altitude of the triangle. If \angle BAC = 71^\circ, \angle ABC = 39^\circ, and \angle BCA = 70^\circ, then what is \angle EZD+\...
*Wednesday, July 23, 2014 at 4:06pm*

**geometry**

Two rectangles are similar. If the height of the first rectangle is 3 inches, and the height if the second rectangle is 9 inches, how much larger is the second rectangle's area?
*Wednesday, July 23, 2014 at 11:26am*

**Geometry**

Two cubes of volumes 8 and 27 are glued together at their faces to form a solid with the smallest possible surface area. What is the surface area of the resulting solid?
*Tuesday, July 22, 2014 at 6:02pm*

**analytic geometry**

the three vertices of a triangle are at A (-4,5), B(-5,3) and C (3,-4), show that the line joining the midpoint of the sides AC and BC is parallel and equal to one-half of AB . solve
*Wednesday, July 16, 2014 at 11:42pm*

**analytic geometry**

the three vertices of a triangle are at A (-4,5), B(-5,3) and C (3,-4), show that the line joining the midpoint of the sides AC and BC is parallel and equal to one-half of AB . solve
*Wednesday, July 16, 2014 at 11:33pm*

**geometry**

one side of a parallelogram has endpoints (2,1) and (3,5) The endpoints for the opposite side are (5,2) and (6,6) true or false
*Wednesday, July 16, 2014 at 11:11pm*

**geometry**

What is the distance between (-4,3)and (5,-2)
*Wednesday, July 16, 2014 at 10:56pm*

**geometry**

which set of ordered pairs has point symmetry with respect to the origin (0,0) 1- (-12,5), (-5,12) 2- (-12,5), (12,-5) 3- (-12,5), (-12,-5) 4- (-12,5), (12,5)
*Wednesday, July 16, 2014 at 10:54pm*

**geometry **

in triangle de, FE = 12 and m d=62. Find DE to the nearest tenth.
*Wednesday, July 16, 2014 at 3:09pm*

**Geometry**

If a circle has a radius length of 2x units, what is the circle’s circumference?
*Tuesday, July 15, 2014 at 1:21pm*

**Geometry**

The volume of a prism which has an altitude of 10 units and has a right triangle base with a hypotenuse of 13 units and a leg of 12 units is what?
*Monday, July 14, 2014 at 7:38pm*

**geometry**

The volume of a cylinder is 980 in.4072-07-02-02-00_files/i0220001.jpg. The height of the cylinder is 20 in. What is the radius of the cylinder? Express your answer to the nearest hundredth.
*Sunday, July 13, 2014 at 2:12pm*

**geometry**

Construction: The midpoint of a line segment can be constructed. Theorem: If the consecutive midpoints of the sides of a parallelogram are joined in order, then the quadrilateral formed from the midpoints is a parallelogram. Write an essay (suggested length of 2–4 pages, ...
*Thursday, July 10, 2014 at 12:12pm*

**Geometry**

Michael is standing in the middle of a playground at night looking at the American flag at the top of the flag pole. If he knows he is 50 feet away from the base of the flag pole and his father told him the pole is 100 feet tall, what is the angle that Michael is looking up ...
*Thursday, July 10, 2014 at 11:48am*

**Geometry**

A 20 foot extension ladder leans against Paul’s barn wall creating a 65° angle with the ground. How many feet (to the nearest tenth) above the ground is the point where the ladder touches the wall?
*Thursday, July 10, 2014 at 11:47am*

**Geometry**

Point T is in the interior of ∠PQR. Find the m∠PQR if the following conditions apply. The m∠PQR = (10x - 7)°, the m∠RQT = 5x°, and the m∠PQT = (4x + 6)° The m∠PQR is=
*Tuesday, July 8, 2014 at 4:16pm*

**Geometry**

What are the properties of equiangular octagons?
*Monday, July 7, 2014 at 11:30pm*

**geometry**

ABCD is a rhombus with diagonals Imported Asset and Imported Asset . Is angle ABD congruent to angle CBD?
*Monday, July 7, 2014 at 4:59pm*

**geometry**

Alice purchased 30 decorative stone square blocks to create an enclosed rectangular garden area. Each square block measures 1 foot by 1 foot, and one possible arrangement is shown. Including the arrangement shown, in how many distinct ways can Alice arrange the blocks to ...
*Saturday, July 5, 2014 at 3:34pm*

**mechanical engineering**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . E4_1? All the bars in truss ABC have constant cross section and are made of a homogeneous ...
*Wednesday, July 2, 2014 at 6:06pm*

**physics**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . E4_1? All the bars in truss ABC have constant cross section and are made of a homogeneous ...
*Wednesday, July 2, 2014 at 5:46pm*

**geometry**

The endpoints of a line segment are (-2, 5) and (8, 13), determine the midpoint of the line. x_m = (x_1 + x_2)/2
*Monday, June 30, 2014 at 9:25pm*

**Geometry**

What are some properties of cyclic quadrilaterals? I've search Google, but the answers are too vague and not what I've had in mind. (I'm using this for a proof)
*Sunday, June 29, 2014 at 10:40pm*

**geometry**

RECTANGULAR ARRANGEMENTS OF NO 12 AND18
*Saturday, June 28, 2014 at 12:06am*

**geometry**

Use the information below to find the missing measure such that . AB = 35, DE = 14, DF = 22, , AC = ?
*Wednesday, June 25, 2014 at 10:24am*

**geometry**

What type of quadrilateral is formed by connecting the points (0,0), (3x,b), (18x,b), and (15x,0)? Explain. How would I solve this?
*Tuesday, June 24, 2014 at 6:22pm*

**geometry**

What type of quadrilateral is formed by connecting the points (0,0), (3x,b), (18x,b), and (15x,0)? Explain. How would I solve this?
*Tuesday, June 24, 2014 at 5:07pm*

**Geometry**

2.Given two segments with lengths x and y (x does not equal y), which three special parallelograms meet the three sets of given conditions? a. One diagonal has length x, the other has length y. b. The diagonals intersect at right angles. c. Both diagonals have length y and do ...
*Tuesday, June 24, 2014 at 4:13pm*

**Geometry**

What type of quadrilateral is formed by connecting the points (0,0), (3x,b), (18x,b), and (15x,0)? How would I solve this?
*Tuesday, June 24, 2014 at 4:11pm*

**Geometry**

How do you find the third altitude of a triangle with the two other altitudes? I have the altitudes 12 and 14.
*Tuesday, June 24, 2014 at 12:13am*

**geometry**

if a polyhedron has a volume of 14 cm and is dilated by a factor of 1/5, what will be the volume of the dilated polyhedron? ROund your answer to the nearest thousandth if necessary
*Monday, June 23, 2014 at 11:42pm*

**Geometry**

What is the value of x? image is on: tiny pic . com/r/nx1abn/8 I choose c 90 deg a 60 deg b 72 deg c 90 deg d 120 deg
*Monday, June 23, 2014 at 11:07pm*

**Geometry**

Calculate the area of the shaded region in the figure shown. the image is on: tiny pic . com/r/152zyxi/8] just remove the spaces a) 144-54 SQRT(3) square meters b) 144 - 18SQRT(3) square meters c) 144 - 6SQRT(3) square meters d 54 SQRT(3) square meters
*Monday, June 23, 2014 at 11:05pm*

**Geometry**

Two altitudes of a triangle have lengths 12 and 14. What is the longest possible length of the third altitude, if it is a positive integer?
*Monday, June 23, 2014 at 10:01pm*

**geometry**

Determine the value of x. DO,k(x, 9) → (–10, –6) A. 5 B. 7 C. 12 D. 15
*Monday, June 23, 2014 at 5:57pm*

**Psychology**

Which of the following statements best describes proactive interference? A. Having majored in French history in the 1960's, Ken finds it difficult to grasp new discoveries about Marie Antoinette B. While learning Italian, Lucy realizes she is losing her ability to speak ...
*Monday, June 23, 2014 at 5:53pm*

**geometry**

Find the image of P(–2, –1) after two reflections; first , and then . A. (–2, –1) B. (–1, –6) C. (4, –9) D. (1, –5)
*Saturday, June 21, 2014 at 5:25pm*

**geometry**

The angle of depression from D to F measures 25°. If EF = 10 yd, find DE
*Thursday, June 19, 2014 at 10:55am*

**geometry**

A bicycle tire has a diameter of 60cm and rotates 33.3 revolutions per minute.How far does a point on the edge of the tire travel in a minute? Use 3.14 for pi.
*Tuesday, June 17, 2014 at 10:01pm*

**geometry**

LP turne 360 degrees every minute,if one side of an LP plays for 48 minutes,how many times does it turn around?
*Tuesday, June 17, 2014 at 9:58pm*

**geometry**

what is the greatest mass that can be taken an exact number of times from 720kg,1008kg and 672kg?
*Tuesday, June 17, 2014 at 9:55pm*

**geometry**

in the proportion 2/8=8/32, which numbers is the geometric mean of the other two numbers?
*Tuesday, June 17, 2014 at 8:52pm*

**geometry**

A 15m by 15m square garden has a 2m wide path that runs through the center.what is the area of the garden that is available for planting?
*Tuesday, June 17, 2014 at 6:44pm*

**Geometry **

quadrilateral A B C D on a graph. Point A is at ( -5, -1), Point B is at ( 6, 1), Point C is at (4, -3), Point D is at (-7, -5). Prove the quadrilateral is a parallelogram by using Theorem 5-8; if one pair of opposite sides of a quadrilateral is both congruent and parallel, ...
*Monday, June 16, 2014 at 11:52pm*

**Geometry **

quadrilateral A B C D on a graph. Point A is at ( -5, -1), Point B is at ( 6, 1), Point C is at (4, -3), Point D is at (-7, -5). Prove the quadrilateral is a parallelogram by using Theorem 5-7; if the diagonals of a quadrilateral bisect each other, then it is a parallelogram...
*Monday, June 16, 2014 at 11:51pm*

**Geometry**

How do you find the altitudes of a right triangle with the three sides?
*Monday, June 16, 2014 at 12:32pm*

**Geometry**

How do you find the lengths of the sides of an isosceles triangle with three medians?
*Sunday, June 15, 2014 at 3:05pm*

**Geometry**

How do you find the altitudes of an isosceles triangle? Thanks!
*Saturday, June 14, 2014 at 11:57pm*

**geometry**

what will be the length of the shadow of a person whose height is 147cm? when it will be 9am?
*Friday, June 13, 2014 at 3:36am*

**geometry **

The distance between the front wheels of a model car is 4.5 centimeters. What is the actual distance on the car if the scale is 1:24?
*Thursday, June 12, 2014 at 11:14am*

**Geometry**

a four sided garden plot has an irregular shape. the second side is 12 feet longer than the first. the third side is 24 feet longer than the second. the fourth side is 36 feet longer than the third. if the perimeter of the plot measures 136 feet, what is the length of the ...
*Wednesday, June 11, 2014 at 11:37pm*

**geometry**

In a triangle, the measure of the first angle is four times the measure of the second angle. The measure of the third angle is 84 degrees more than the second angle. what is the measure of the first angle?
*Wednesday, June 11, 2014 at 10:24pm*

**Geometry**

The radius of circle a (which is 6) is multiplied by 1/2. Describe the effect of the change of the area.
*Monday, June 9, 2014 at 11:02pm*

**geometry**

solve the proportion: 5/2=22/24w the answer is 11/30 but I don't understand how you get that.
*Monday, June 9, 2014 at 9:54pm*

**Math**

I'm an on-going 8th grader, and I'm taking a class for Algebra 2. What should I expect that is different from Algebra 1? P.S. I've taken Geometry online.
*Sunday, June 8, 2014 at 11:13pm*

**Repost - Geometry question**

"please help me" posted this earlier: If m angle sign 1=37 degrees what is m angle sign 4 My answer: 43 degrees which is wrong. Correct answer: 37 degrees I don't understand how to do this.
*Thursday, June 5, 2014 at 11:41am*

**Geometry**

Given that the ratios of the perimeter of two similar shapes is 3/5, what is the ratio of their perimeters.
*Thursday, June 5, 2014 at 12:04am*

**Geometry**

Find the area of a parallelogram with sides of length 6 and 8, and with an interior angle with measure 45 degrees.
*Wednesday, June 4, 2014 at 12:55pm*

**geometry**

The lateral area of the right regular triangular prism is 18 cm^2.Find the total surface area.give your answer in decimal form rounded of to 2 decimal places
*Wednesday, June 4, 2014 at 11:40am*

**geometry**

A kite is flying at an angle of elevation of 40 degrees. All 80 m of string have been let out. Ignoring the sag in the string, the height of the kite to the nearest 10 m is __?__ meters.
*Wednesday, June 4, 2014 at 9:06am*

**Geometry**

The diameter of circle C is 16 cm. is 70°. Use this information, the diagram, and your experiences in geometry this semester to answer these questions. (Use .)
*Wednesday, June 4, 2014 at 6:43am*

**geometry**

What is the volume of a rectangular prism that has dimensions 1in , 2in , and 3in?
*Tuesday, June 3, 2014 at 9:24pm*

**Geometry**

Is it possible for AB =10 BC =2x+5 AC =5x given that point B is midpoint why or why not
*Tuesday, June 3, 2014 at 8:16pm*

**Geometry**

Find the area of a parallelogram with sides of length 6 and 8, and with an interior angle with measure 45 degrees.
*Tuesday, June 3, 2014 at 6:40pm*

**Geometry**

In quadrilateral ABCD, we have AB = BC = CD = DA, AC = 14, and BD = 48. Find the perimeter of ABCD.
*Tuesday, June 3, 2014 at 6:32pm*

**Geometry**

The diameter of circle C is 18 cm. measurement of arc AD is 60°. Use this information, the diagram, and your experiences in geometry this semester to answer these questions. (Use 3.14 as pie)
*Tuesday, June 3, 2014 at 1:04pm*

**geometry**

Two tangents drawn to a circle from an external point intercept a minor arc of 150°. What is the measure of the angle formed by these two tangents?
*Tuesday, June 3, 2014 at 9:23am*

**geometry**

The sum of the diameter of 2 circles is 28". Once circle has a diameter that is 8" longer. What are the diameters of each circle?
*Monday, June 2, 2014 at 11:42pm*

**geometry**

What inequality represents the sentence below? The product of a number and 5 is no more than 8. A. 5n < 8 B. 5n > 8 C. 5n>8 D.5n<8
*Monday, June 2, 2014 at 6:43pm*

**geometry**

Kristen lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Kristen’s home and the football field at the exact point where an altitude to the right triangle formed by her home, the park, and the ...
*Monday, June 2, 2014 at 6:04pm*

**geometry**

1)How to find the area bounded by the 4 points in a coordinate? 2)what is the formula? 3)how the formula related to that?
*Monday, June 2, 2014 at 2:13am*

**Geometry**

at 10 feet away from the base of a tree, angle the top of a tree males with the ground is 61 degrees. of the tree grows at an angle of 78 degress with the respect to the ground, how tall is the tree to the nearest foot?
*Sunday, June 1, 2014 at 10:35pm*

**Geometry**

A cube has infinitely many planes of symmetry. True or False? Identify the figures that are constructed from Polygons. A) Octahedron B) Tetahedron C) Prism D) None of the above E) All of the above In Translations, if you are moving 5 units BACK, which direction are you going? ...
*Sunday, June 1, 2014 at 7:11pm*

**Geometry**

The side lengths of two different cubes are 25 cm and 35 cm. What is the ratio of the volume of the smaller to the volume of the larger (in simplest form)?
*Sunday, June 1, 2014 at 6:54pm*

**Geometry**

The vertices of a pre-image are located at points (12, 8), (6, -4), and (-2, 10). If the image has coordinates (6, 4), (3, -2), and (-1, 5), is this an expansion or a contraction?
*Sunday, June 1, 2014 at 6:05pm*

**Geometry**

Two corresponding sides of two similar hexagons are 16 mm and 20 mm. What is the ratio of the area of the two hexagons? Name the postulate and two theorems you can use to prove triangle similarity.
*Sunday, June 1, 2014 at 5:31pm*

**Geometry**

How many edges does a triangular prism have?___________ What formula can you use to help you find the # of edges of a prism
*Sunday, June 1, 2014 at 2:51am*

**geometry**

A hemispherical dome holds a volume of 486π..find the surface area (omit the area of the circle)? I just need the formulas id use
*Friday, May 30, 2014 at 1:48pm*

**Geometry**

An action movie production team needs glass spheres to hold a green liquid that looks like an explosive. If all of the available 3,392.92 cubic inches of the liquid is to be poured into 30 glass spheres, what should the diameter of each sphere be? Assume that each sphere is ...
*Friday, May 30, 2014 at 9:02am*

**geometry**

The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image . What are the slope (m) and length of ?
*Thursday, May 29, 2014 at 10:45pm*

**geometry**

Ralph the monkey is looking down at a 31° angle from the top of a tree. There are bananas on the ground 12.4 ft from the base of the tree. If Ralph flies down from the tree at a diagonal path, shown in the diagram by x, what distance would he travel? Round to the nearest ...
*Thursday, May 29, 2014 at 8:03pm*

**Geometry**

Need help solving this problem so confused The tries of an automobile have a diameter of 22 inches. If the wheels revolve ten times, how far does the automobile move? Round your answer to the nearest tenth of a foot and show your work
*Thursday, May 29, 2014 at 6:39pm*

**Geometry**

How do you factor xsquared-10x-39=0
*Thursday, May 29, 2014 at 12:18pm*

**geometry**

a self supporting ladder placed so that the angle between the ladder and the ground is 75.5" can be used to test whether the ladder can support a certain load. The diagram represents a ladder placed next to a window that is 20feet above the ground. What is the length of ...
*Thursday, May 29, 2014 at 10:14am*

**geometry**

Rewrite the following in If-then form: the product of x and y is an odd multiple of 5
*Wednesday, May 28, 2014 at 10:25pm*

**Geometry**

Could anyone tell me if this question is correct? 2.) Which is true about both Pappus's Theorem and Desargues' Theorem? Each theorem applies to spherical geometry. Each conclusion states that three points are collinear. <---- Each hypothesis is based on triangles. ...
*Wednesday, May 28, 2014 at 6:12pm*

**Geometry (Checking)**

2.) Which is true about both Pappus's Theorem and Desargues' Theorem? Each theorem applies to spherical geometry. Each conclusion states that three points are collinear. <---- Each hypothesis is based on triangles. Each theorem involves a dilation. 3.) How many ...
*Wednesday, May 28, 2014 at 4:38pm*

**geometry**

a line segment has end point P(3,6) and Q(12,18) and is dilated so thats its new endpoints are Q' (8,12). What is the scale factor? If the lenght of PQ is 15 what is the lenght of P' Q'? Can you plez help worth 10 points
*Wednesday, May 28, 2014 at 1:40pm*

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