Friday

February 5, 2016
**Geometry**

A chord PQ of a circle with radius r subtends an angle B at the center. Show that the area of the minor segment PQ=1/2.r^2.(B-sinB) and write down the area of the major segment PQ interms of r and B.
*Wednesday, June 10, 2015 by Age*

**Geometry **

△ABC and △CDE are similar triangles. Set up an equation to find the value of x. 20 /30 = 5 /x 20 /30 = x /5 20 /30 = 5x 30 /20= 5 / x
*Tuesday, June 9, 2015 by Anonymous*

**Geometry-Reiny**

Thank you! A, B, C and D are all on the circle. If the circle was a clock, point A would be around 11:00, B is around 9, C is around 6 and D is around 4 ... P is in the middle. A straight line runs vertical to the circle touching the circle at point B. E is the point at the ...
*Tuesday, June 9, 2015 by Donna*

**Geometry**

Max is building a spherical model of earth. He is building his model using 2-inch long pieces of wood to construct the radius. The first time he tries to build the model, he uses 3 of the 2-inch pieces of wood end-to-end to make the radius of the model. A.) What is the volume ...
*Tuesday, June 9, 2015 by Donna*

**Geometry**

A scientist is plotting the circular path of a particle on a coordinate plane for a lab experiment. The scientist knows the path is a perfect circle and that the particle starts at ordered pair (-5, -11). When the particle is halfway around the circle, the particle is at ...
*Tuesday, June 9, 2015 by Donna*

**Geometry**

Trying to help my Autistic child with geometry. Need a simple step by step explanation and answer please. In this open ended question, find each item and include an explanation of how you found each one. Find arc AD. Find angle APD. If arc BC=100 degrees, find angle EBC. Find ...
*Tuesday, June 9, 2015 by Donna*

**Geometry**

Which equation has exactly one real solution? A 4x^2– 12x– 9 = 0 B 4x^2+ 12x+ 9 = 0 C 4x^2– 6x– 9 = 0 D 4x2+ 6x+ 9 = 0 Please teach me how to do this
*Monday, June 8, 2015 by HELP PLEASE*

**Geometry**

A circular pond is modeled by the equation x^2+y^2= 225. A bridge over the pond is modeled by a segment of the equation x–7y=–75. What are the coordinates of the points where the bridge meets the edge of the pond? Can you teach me how to do this?
*Monday, June 8, 2015 by Anonymous*

**geometry**

A quadrilateral has vertices A(3, 5), B(2, 0), C(7, 0), and D(8, 5). Which statement about the quadrilateral is true? ABCD is a parallelogram with non-perpendicular adjacent sides. ABCD is a trapezoid with only one pair of parallel sides. ABCD is a rectangle with non-congruent...
*Monday, June 8, 2015 by dee*

**Geometry**

In triangle ABC, BC = 20sqrt3 and angle C = 30 degrees. Let the perpendicular bisector of BC intersect BC and AC at D and E respectively. Find the length of E.
*Friday, June 5, 2015 by JulieJones*

**geometry**

two round fountains are similar. one measures 4'6 across and the other measures 9'7 across. find the scale factor from the small one to the large one
*Friday, June 5, 2015 by bobbie*

**geometry**

In triangle ABC, X and Y are the midpoints of BC and AC, respectively. The perpendicular bisectors of BC and AC intersect at a point O inside the triangle. If angle C = 47 degrees, then find the measure of angle XOY?
*Friday, June 5, 2015 by Julie*

**Geometry **

Find the equations of lines parallel to and perpendicular to the line 3x - 2y = -1 and passing through the point (3, -2)
*Thursday, June 4, 2015 by Summer.*

**geometry **

Find the standard equation of a circle with the center (-2, 3) and a radius of 4 units.
*Thursday, June 4, 2015 by Summer.*

**Geometry **

Find the standard equation of a circle with the center (-2, 3) and a radius of 4 units.
*Wednesday, June 3, 2015 by Summer.*

**Geometry **

If the sum of the measures of the interior angles of a n-sided polygon is 1,0800, then set up a mathematical model to find the number of sides of the polygon.
*Wednesday, June 3, 2015 by Summer.*

**Geometry **

Find the standard equation of a circle with the center (0, 2) and a radius of 2 units.
*Wednesday, June 3, 2015 by Summer.*

**Geometry.**

Triangles ABC and DEF are similar. If ∠ABC = 121°and ∠BCA = 35°, find the measure of angle FDE.
*Wednesday, June 3, 2015 by Summer.*

**Geometry**

Find the circumference of a circle with a radius of 6 in. A:6in B:12in C:6 pi in D: 12 pi in
*Monday, June 1, 2015 by Andrea*

**geometry**

ABCD it's an isosceles trapazoid With A(10,-1),B(8,3), and C(-1,3).find the coordinates of D
*Sunday, May 31, 2015 by kenzie*

**geometry**

One endpoint of a line segment is (8, −1). The point (5, −2) is one-third of the way from that endpoint to the other endpoint. Find the other endpoint.
*Sunday, May 31, 2015 by Mark*

**geometry**

Name a point that is between 50 and 60 units away from (7,-2) and state the distance between the two points.
*Sunday, May 31, 2015 by Mark*

**Geometry**

Find the approximate surface-area-to-volume ratio of a bowling ball with a radius of 5 inches. A. 0.6 B. 0.67 C. 1.67 D. 25
*Friday, May 29, 2015 by Katie*

**geometry**

find the equation of the line that describes all points equidistant from the points (1, 2) and (4, 5).
*Friday, May 29, 2015 by Mark*

**college geometry**

A rectangle ABCD has three of its vertices at A(2, 1), B(6, 1), and C(6, 3). Find the fourth vertex D and the area of rectangle ABCD.
*Friday, May 29, 2015 by Mark*

**college geometry**

M(2.1, 5.7) is the midpoint of , in which A is the point (1.7, 2.3). Find the coordinates of B.
*Friday, May 29, 2015 by Mark*

**college geometry**

Points A and B have symmetry with respect to point C. Find the coordinates of C given the points: a) A(3, 4) and B(5, 1) c) A(5, 3) and B(2, 1) b) A(0, 2) and B(0, 6) d) A(2a, 0) and B(0, 2b)
*Thursday, May 28, 2015 by Mark*

**geometry**

the length of a rectangular portrait is 2.5 times the width. the perimeter is 28 feet. what is the length of the portrait
*Thursday, May 28, 2015 by carla*

**college geometry**

Points A and B have symmetry with respect to the origin O. Find the coordinates of B if A is the point: a) (3, 4) c) (a, 0) b) (0, 2) d) (b, c)
*Thursday, May 28, 2015 by Mark*

**college geometry **

10. Find the midpoint of the line segment that joins each pair of points: a) (Ϫ3, Ϫ7) and (2, 5) c) (Ϫa, Ϫb) and (a, b) b) (0, 0) and (Ϫ2, 6) d) (2a, 2b) and (2c, 2d)
*Thursday, May 28, 2015 by Mark*

**geometry**

The area of a tabletop is 48 square feet. The length is 3 times the width. If the dimensions are whole numbers, what is the width of the tabletop
*Thursday, May 28, 2015 by carla*

**Trig/Geometry**

Wendy spots a pizza delivery car as she is looking down at a 15° angle from the top of her apartment building, which is 145 ft tall. How far away is the car from the base of the building? Round to the nearest hundredth. A. 45.98 ft B. 3.56 ft C. 38.85 ft D. 68.78 ft I keep...
*Thursday, May 28, 2015 by Rothko*

**college geometry **

If the distance between (b, 3) and (7, 3) is 3.5 units, find all possible values of b.
*Wednesday, May 27, 2015 by Mark*

**Geometry - help please**

AB is tangent to circle O at B. The diagram is not drawn to scale. If AB = 6 and AO = 11.7, what is the length of the radius (r)? Round the answer to the nearest tenth. 5.7 8.9 10.0 13.1
*Wednesday, May 27, 2015 by Sandra*

**Math- 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 ...
*Tuesday, May 26, 2015 by rhidicde*

**geometry**

got a parallelogram ABCD = 100 sq in. AC=2 times BD. what is CD and BD? the diagonals AC divided into AE=2x and EC =2x, diagonal BD is divided into BE=x and ED=x. I got x=1. So line AC=2x or 4x? line BD=x or 2x? so, 100 sq in 0divided by 3x or 6x. Or did I goof?
*Tuesday, May 26, 2015 by robin*

**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 ...
*Tuesday, May 26, 2015 by rhidicde*

**Geometry**

PR=PS ray RV bisects angle PRS, ray SV BISECTS ANGLE PST prove angle V= 1/2 angle P where angle P = 4x
*Saturday, May 23, 2015 by Anonymous*

**Chemistry**

In 3-4 sentences, identify how the geometric structure of NF3 is different than that of NF4+. Explain how the geometry affects the ability of the molecules to experience a dipole effect. (I did the Lewis diagrams for both but I don't know what to do after that)
*Thursday, May 21, 2015 by Madison*

**geometry**

i need to figure out side lengths of congruent right isosceles triangle with no lengths given. I know that the hypotenese is 1 per pythogoras constant and the area is a^2/2. I dont have to prove area just side lengths.
*Thursday, May 21, 2015 by carolyn*

**Geometry**

What formula should be used to derive the equation of a parabola given its focus and directrix? • The distance formula ?? • The midpoint formula • y = ax2 + bx + c • The area formula for a circle
*Wednesday, May 20, 2015 by Sandra*

**geometry - PLEASE ANSWER ASAP! thanks!**

the sunshine orange juice company wants its product in a one quart container(1 quart=107.75 cubic inches). the manufacturer for their containers makes cylindrical cans that have a base that is 5 inches in diameter. what will be the height of the one quart container? May 20, 2015
*Wednesday, May 20, 2015 by lesley*

**math-geometry**

the sunshine orange juice company wants its product in a one quart container(1 quart=107.75 cubic inches). the manufacturer for their containers makes cylindrical cans that have a base that is 5 inches in diameter. what will be the height of the one quart container?
*Wednesday, May 20, 2015 by lesley*

**geometry**

A cone has a volume 320 cm^3. Find the radius of the base. Round your answer ti the nearest 0.1 cm.
*Wednesday, May 20, 2015 by Anonymous*

**Geometry**

In a 30,60,90 triangle 1: If b=12, find c 2: If b=3,find a Letter a is on the 90° side, b is on the bottom near 60° and c is near 30°. Could anyone explain how to do this? It's hard to understand from my textbook.
*Tuesday, May 19, 2015 by Andrea*

**geometry**

I have 2 problem that I don't know if I did it right. 1) right triangle with base=12 altitude=c, hypotenuse=d. 71 degrees is opposite 90 degrees. need to find C and d. I did tan 71=d/12. = 12 x 2.9042 = d = 34.85 Do I do the same process to get c? 2) right triangle with ...
*Monday, May 18, 2015 by robin*

**Geometry**

How do you figure the height of a tripod using 28' legs set 7' out from center?
*Monday, May 18, 2015 by Craig*

**Geometry**

Jaime mixes purple paint. She uses three pints of blue paint for every four pints of red paint. Jaime wants to mix more paint exactly the same color. She has 14 pints of red paint. How much blue paint does she need?
*Sunday, May 17, 2015 by Lemos*

**geometry**

what is the surface area of a cube with side of 2 inches? what is the volume?
*Friday, May 15, 2015 by matt*

**geometry**

I need d and e. Have a right triangle. Base=d; hypotenuse=e; altitude= 2sqrt3. < opposite 90 = 60.
*Friday, May 15, 2015 by robin*

**geometry**

what is the formula for the volume of a cube? and: what is the formula for the surface area of a cube?
*Thursday, May 14, 2015 by shannon*

**geometry**

what is the area of the base of a rectangular pyramid with a length of 2.75 inches and a width of 2.75 inches? Also what is the area of a face (lateral) with a length of 2.75 inches and a width of 2.75 inches?
*Thursday, May 14, 2015 by denise*

**Geometry **

If mADC = 7x+3 and mDCB = 5x+9, then mDAB = ?
*Thursday, May 14, 2015 by Jordan*

**geometry**

how many vertices, edges and faces does a cylinder have? How do you find the perimeter and area of the base? Thank you.
*Wednesday, May 13, 2015 by brigit*

**geometry**

I have two circles that are congruent to each other one has a lenght of 8ft and the second is half of 8ft. What is the length of the second circle
*Wednesday, May 13, 2015 by nicole*

**geometry **

2. For the circle with equation (x – 2)2 + (y + 3)2 = 9, answer each question: a) What are the coordinates of the center? none b) What are the radius and diameter of the circle? 360 c) Graph the circle.
*Wednesday, May 13, 2015 by toriie*

**geometry**

What is the cross section of a cylinder if it's cut perpendicular to the base? It's either a rectangle or a circle but I'm not sure.
*Wednesday, May 13, 2015 by ally*

**Geometry/Math**

Two right circular cylinders have equal volume. The first cylinder has a radius of 6 inches and a height of 12 inches. What is the number of inches in the height of the second cylinder if its radius is 8 inches? Express your answer as a common fraction, without units.
*Wednesday, May 13, 2015 by Amanda*

**Geometry**

Cross multiplication 20+x = 6 ----- - x 5 Idk how to solve this with 2 x's
*Wednesday, May 13, 2015 by Andrea*

**geometry **

The side of a triangle opposite the right angle is equal to ______. a. one of the other sides a or b b. a+b c. O(a^2+b^2) d. None of the above
*Tuesday, May 12, 2015 by RJ*

**geometry**

How many degrees is the apex angle of an isoscles triangle in which each side angle is double its vertex angle?
*Tuesday, May 12, 2015 by Angles In Triangle Help*

**Geometry **

Use the Distance Formula and the x-axis of the coordinate plane. Show why the distance between two points on a number line (the x-axis) is | a – b |, where a and b are the x-coordinates of the points. How would I solve this?
*Tuesday, May 12, 2015 by Alexa*

**Geometry **

For questions 38-40 use the triangle. |\ 45° angles for the top of the | \ triangle and the bottom right | \C | \ 38: If a=12, find b | \ 39: If b=2,find c | \ 40: If c=12,find a -------- B. Is this pythagorean Therorem? When I try it that way it's not working out? ...
*Tuesday, May 12, 2015 by Andrea*

**Geometry**

A six-feet tall person wants to know the height of a tree. The person stands 20 feet from the tree and sights to the top of the tree. The angle of the sight line is 30 degrees. How tall is the tree?
*Monday, May 11, 2015 by Wendi*

**Analytic Geometry**

Water spouts from a horizontal pipe 12 meters above the ground. Three meters below the line of the pipe, the water trajectory is at a horizontal distance of 5 meters from the water outlet. How far from the water outlet will the stream of the water hit the ground?
*Monday, May 11, 2015 by Alexis*

**Analytic Geometry**

A parabolic suspension bridge cable is hung between two supporting towers 120 meters apart and 35 meters above the bridge deck. The lowest point of the cable is 5 meters above the deck. Determine the lengths of the tension members 20 meters and 40 meters from the bridge center.
*Monday, May 11, 2015 by Alexis*

**geometry**

Does pi cancel when I add 48ƒÎã2 + 36ƒÎ ?
*Monday, May 11, 2015 by Morgan*

**Geometry**

Determine the vertices of rectangle ABCD, where AB = 2BC. a) rectangle ABCD A) (0,0) B) (8,2) C (_,_) D (_,_) So far I just found the midpoint of A and B and got (4,1) but i don't know what to do after that. THe slope is 1/4, so i was thinking of finding the point C with ...
*Sunday, May 10, 2015 by starburst*

**Geometry**

The figure below represents an oval shaped track. the rounded portion of the track are semicircles. If you were to run one lap of this track, how far would you run? Pic: LONG OVAL, THE WHOLE LENGTH IS 106 FT. THERE ARE TWO LINES NEAR THE OPPOSITE ENDS WHICH IS 12 FT LONG. (...
*Sunday, May 10, 2015 by Anonymous*

**geometry**

The altitude of equilateral triangle ABC is 15. What is the length of a side of triangle ABC?
*Sunday, May 10, 2015 by Tameka*

**Algebraic Geometry **

A 33 kilometer bicycle race course is designed in the shape of a triangle. The first leg of the race is 5 km shorter than the second, and the third leg is twice the first. Find the distance of each leg of the race.
*Sunday, May 10, 2015 by Mo mi*

**geometry**

Hello , my name is Amelia and my daughter is really confused on her homework about quadrilaterals. Can you help explain it to her so that she can understand it better? Please answer ASAP. Thank you Amelia V.
*Thursday, May 7, 2015 by amelia*

**geometry**

the track rises 1 foot for every 11 feet run. find the measure of the angle formed by the track and ground level
*Wednesday, May 6, 2015 by Brittany*

**GEOMETRY**

I really need help on this... NA ≅ PA, MO Û NA, RO Û PA, MO = 7 feet what is PO? a.7 ft b.49 ft c.14 ft d.3.5 ft
*Wednesday, May 6, 2015 by Sandra*

**geometry and measurement**

Lila wants to build a fence around her pool. The pool is 25 feet long by 15 feet wide. The fence is to be 10 feet from the edge of the pool. how many feet of fencing will she need?
*Tuesday, May 5, 2015 by danielle*

**Geometry**

NA ≅ PA, MO Û NA, RO Û PA, MO = 7 feet what is PO? a.7 ft b.49 ft c.14 ft d.3.5 ft Explain?
*Tuesday, May 5, 2015 by Sandra*

**Analytic Geometry**

the segment XY X(-1,2) , Y(4,11) is to be extended to point Z which is 4 itmes the length of XY. Find the coordinates of Z
*Tuesday, May 5, 2015 by Camille*

**Geometry **

True or False? In an obtuse triangle all the angles are obtuse. I think it's false but I'm not sure.
*Tuesday, May 5, 2015 by Andrea*

**geometry**

EF is a median of trapezoid ABCD. If the length of EF is 14x, and the length of CD is 20x, what is the length of AB in terms of x?
*Tuesday, May 5, 2015 by Anonymous*

**geometry**

the Parkers are installing a wooden fence in the back yard they have 330 feet of wood the lip can be no more than 90 feet write and solve equality define the max width of the fence
*Monday, May 4, 2015 by Anonymous*

**geometry**

The diameter of two similar cones are in the ration 5 to 6. If the volume of the smaller cone is 125 PI cubic centimeters and the diameter of the larger cone is 12 centimeters, what is the height of the larger cone?
*Monday, May 4, 2015 by Annis*

**geometry**

In the xy - plane, line l has equation y= -x. Point P lies on l and has coordinates (-2,2). If l is rotated counterclockwise 45 degrees about the origin, what will be the coordinates of the image of P under this rotation.
*Monday, May 4, 2015 by nancy*

**Geometry**

During the half-time show of a football game, a trumpet player and a tuba player start at the same position on the field. The trumpet player then marches 76.4 ft directly toward the goal line, and the tuba player marches directly toward the sideline. At the end of their march...
*Monday, May 4, 2015 by Savanna *

**Analytic Geometry**

write the equation of the line a) parallel to b)perpendicular to 4x+3y-10=0 and is 3 units from the point (2,-1)
*Wednesday, April 29, 2015 by Alexis*

**Geometry**

The front wheel of a child's tricycle has a 10-inch radius and the rear wheels have a 6-inch radius. The pedals are attached to the front wheels by arms that are 7 inches long. How far does a pedal travel when the rear wheels make one revolution?
*Tuesday, April 28, 2015 by Emma*

**Geometry **

How do I find the area of a regular triangle with a perimeter of 36 cm?
*Tuesday, April 28, 2015 by Anonymous *

**Geometry **

What would the volume be if the radius of a sphere is 16m?
*Tuesday, April 28, 2015 by Hannah*

**Geometry**

Find the area of the regular triangle with a perimeter of 36 cm. how do I do this?
*Tuesday, April 28, 2015 by Hannah*

**geometry **

What will happen to the circumference and the area of the maze a fun house maze that is circular in shape has a diameter of 50 feet. the owner decides to double the radius of the maze?
*Monday, April 27, 2015 by josh*

**Geometry**

A school's wrestling mat is a square with 50 ft sides. A circle 28 ft in diameter is painted on the mat. No wrestling is allowed outside the circle. Find the area of the part of the mat that is NOT used for wrestling. Use pie=22/7.
*Monday, April 27, 2015 by Andrea*

**geometry **

What is the value of x? Justify each step. AC=32 2x 6x+8 .__________________._________________. A B C Drawing not to scale AB + BC = AC a.segment addition postulate 2x + 6x + 8 =32 b.substitution 8x + 8 = 32 c.simplification 8x = 24 d.addition property of equality x = 3 e....
*Monday, April 27, 2015 by Alexa*

**geometry **

What is the value of x? Justify each step. AC=32 2x 6x+8 .__________________._________________. A B C Drawing not to scale AB + BC = AC a.segment addition postulate 2x + 6x + 8 =32 b.substitution 8x + 8 = 32 c.simplification 8x = 24 d.addition property of equality x = 3 e....
*Monday, April 27, 2015 by Alexa*

**geometry**

A loading dock ramp that is 14 feet long rises at an angle of 14.1° from the horizontal. Due to new design specifications, a longer ramp is to be used, so that the angle is reduced to 9.2°. How much farther out from the dock will that put the foot of the ramp?
*Monday, April 27, 2015 by houlh*

**Analytic Geometry**

The line through the points (-1, 6) and (5, -2)intersects the line through (4, -4) and (1,7).Determine the angle between these two intersecting lines.
*Sunday, April 26, 2015 by Alexis*

**geometry**

I sent question about rt triangle, ABC, needing to find a & b. altitude was 4, base a and hypotenuse b. You mentioned knowing another angle. There is one < A is 45 degrees. Thanks for all your help. Math is not an easy subject for me.
*Saturday, April 25, 2015 by robin*

**geometry**

I tried to do this problem but the answer doesn't jive. Circle C has a radius of 13. Chord AB is 10. Find the distance from the center of the circle to chord AB which is labeled CD. I labeled CD = x. 1/2 of AB = 5. The line segment CB (13) is the same os CD (x). I tired x ...
*Friday, April 24, 2015 by robin*

**geometry**

circle E with a diameter AC and m<DAC = 62 degrees, calculate the following m<BAC arc m<AD m<ABD and m<DBC
*Friday, April 24, 2015 by robin*

**Geometry**

The volumes of two similar solids are 1,331 m^3 and 216 m^3. The surface area of the larger solid is 484 m^2. What is the surface area of the smaller solid? A. 864m^2 B. 288m^2 C. 144m^2 D. 68m^2 I think the answer is B or C just a lil confused...
*Thursday, April 23, 2015 by Cassie*

**Geometry**

If the scale factor of two similar solids is 4:17, what is the ratio of their corresponding area and volumes? A. 4:289 and 17:4,913 B. 8:34 and 12:51 C. 16:289 and 64:4,913 D. 64:4,913 and 16:289 I am not sure of how to do this - please help...
*Thursday, April 23, 2015 by Cassie*

**Analytic Geometry**

The line segment joining a vertex of a triangle and the midpoint of the opposite side is called the median of the triangle. Given a triangle whose vertices are A(4,-4), B(10, 4) and C(2, 6), find the point on each median that is two-thirds of the distance from the vertex to ...
*Thursday, April 23, 2015 by Alexis*