Tuesday

April 28, 2015

April 28, 2015

**geometry **

Triangle ABC and triangle DBC share BC. AB=5 cm AC=12 cm DC=8 cm and BD= 20 cm. What is the least possible integral number of centimeters in BC?
*Saturday, August 16, 2014 at 4:40pm*

**Geometry**

What is the equation of the circle touching the lines: 2x +y-9=0, -2x +y -1=0 and -x +2y +7=0.
*Saturday, August 16, 2014 at 12:18am*

**Geometry**

In a triangle with integer side lengths, one side is three times as long as a second side, and the length of the third side is 15. What is the greatest possible perimeter of the triangle?
*Friday, August 15, 2014 at 5:28pm*

**Geometry**

Draw a diagram. Triangles. AB n(upside down U) CD = CB
*Friday, August 15, 2014 at 12:02am*

**Geometry: Area and Volume Math **

What is the volume of a cube shaped box with edges 6 cm. in length? A. 1,296 cu. cm. B. 36 cu. cm. C. 18 cu. cm. D. 216 cu. cm. please help
*Wednesday, August 13, 2014 at 12:03pm*

**geometry**

Given 3(2x+4)+18=72 AND a=x , prove a=7
*Wednesday, August 13, 2014 at 12:52am*

**geometry**

A log cabin is shaped like a rectangular prism. A model of the cabin has a scale of 1 cm to 0.5 m. If the model is 14 cm by 20 cm by 7 cm, what are the dimensions of the actual log cabin? Explain how to find the dimensions.
*Tuesday, August 12, 2014 at 1:54pm*

**Analytic Geometry**

A circle at the origin whose is 2 units is 2 is inscribed in a right triangle whose base is 8 units and altitude 6 units. Find a) The equation of the circle b)The area and circumference of the circle c)The area of the right triangle exluding the area covered by the circle
*Monday, August 11, 2014 at 11:59pm*

**Analytic Geometry**

Find the equation of the circle incribed in a triangle, if the angle has its sides on the lines: 2x + y - 9 = 0, -2x + y - 1 = 0, and -x + 2y +7 = 0. Draw the figure.
*Monday, August 11, 2014 at 11:53pm*

**Analytic Geometry**

Find angle A of a triangle whose vertices are A (3,3) , B(-3,1) and C (-1,-3)
*Monday, August 11, 2014 at 9:42pm*

**Analytic Geometry**

Find the points of intersections of the circles:x^2 + y^2 - 2x -2y -2 = 0 and x^2 + y^2 + 2x + 2y -2 = 0. Draw the circles.
*Monday, August 11, 2014 at 9:35pm*

**Analytic Geometry**

What are vatices?
*Monday, August 11, 2014 at 9:06pm*

**Geometry **

Which statement is true? A. All squares are rectangles. B. All quadrilaterals are rectangles. C. All parallelograms are rectangles. D. All rectangles are squares. I thought it was B.
*Monday, August 11, 2014 at 2:40pm*

**Analytic Geometry**

A square is a quadrilateral with four equal sides. The area of a square is equal to square of its sides. The diagonal of a square is a line segment joining any two non-consecutive side. Find the area of a square and the length of its diagonal whose vertices are (3,1), (-1,5), ...
*Sunday, August 10, 2014 at 3:09am*

**Analytic Geometry**

f (1, -2) is equidistant with (4, 4) and (x, 4), find x.
*Sunday, August 10, 2014 at 3:02am*

**Geometry**

Three different people are to be selected at random, and each will be given one gift card. There is one card from Home Depot, one from Best Buy, and one from Red Lobster. The first person selected gets to choose one of the cards. The second person selected gets to choose ...
*Saturday, August 9, 2014 at 9:19pm*

**co-ordinate geometry**

The joining straight line of the points(3,4)and (2,-1) is perpendicular on the points (k,o) and (2,3k) then find out the value of k.
*Saturday, August 9, 2014 at 11:40am*

**Geometry**

What is the probability of drawing three red cards, one at a time without replacement, from a standard deck of 52 cards?
*Thursday, August 7, 2014 at 12:01pm*

**Geometry**

Find 2 cos(x/2) sin(x/2) when x = -π/6. I know that cos(x/2) = +- sqrt(1-cosx)/2 and sin(x/2) = +- sqrt(1+cosx)/2, but how to use this identity I'm not entirely sure. Please help.
*Wednesday, August 6, 2014 at 12:36pm*

**Geometry**

A circle R has a radius of length 5 sqrt 3 and has a chord XY that is 5 units from R. Find the length of XY.$
*Tuesday, August 5, 2014 at 10:26pm*

**Geometry**

A circle with center O has a radius of 17. Chord AB in the same circle has length 30. How far the chord from O?
*Tuesday, August 5, 2014 at 10:21pm*

**Geometry**

Damon, can I write it like that instead of a two column proof. I am comparing a bicycle and a model of one?
*Tuesday, August 5, 2014 at 3:07pm*

**Geometry**

How do I write a proof explaining how two images, one the original and the second the reduction, are similiar?
*Tuesday, August 5, 2014 at 2:16pm*

**Geometry**

How do I write a proof showing a bike is 9:1 ratio to the original image
*Tuesday, August 5, 2014 at 1:52pm*

**geometry**

Three of the exterior angles of an n-sided polygon are 50 degrees each, two of its interior angles are 127 degrees and 135 degrees, and the remaining interior angles are 173 degrees each. Find the value of n.
*Tuesday, August 5, 2014 at 10:38am*

**Geometry**

For what value of a is there a right triangle with sides a+1, 6a, and 6a+1?"
*Tuesday, August 5, 2014 at 12:14am*

**geometry**

if a polygon has a volume of 19 cm and is dilated by a factor 3\2 , what will be the volume of the dilated polygon
*Monday, August 4, 2014 at 5:12pm*

**geometry**

"An equilateral triangle of side length 6 sqrt 3 is rotated about an altitude to form a cone. What is the volume of the cone?" Please don't solve the entire thing. A hint is all I really want so I can solve it by myself. Thanks!
*Monday, August 4, 2014 at 3:09pm*

**Geometry**

"Find the volume of a cone that has 5 as its base radius and a lateral surface area of 65 pi." Help, thanks!
*Monday, August 4, 2014 at 2:02pm*

**Geometry**

Steve, What do I do with the J letter? Do I draw a perpendicular line?
*Sunday, August 3, 2014 at 5:29pm*

**geometry**

A picyure,18cm by 15cm,has a uniform frame around it.if the area of frame is 234cm2.find the dimensions of the frame,solve in quadratic equations
*Sunday, August 3, 2014 at 2:46am*

**geometry**

I have to construct my initials J and E geometrically. I drew a base line with two points. Then I drew a line through them. I thought this was right for the E but it's not. What am I doing wrong? I do know how to make a parallel and perpendicular lines.
*Saturday, August 2, 2014 at 3:15pm*

**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*