Monday
May 20, 2013

# Homework Help: Math: Geometry

Geometry Part 2
A forest ranger spots a fire from a 28- foot tower.The angle of depression from the tower to the fire is 11.To the nearest foot,how far is the fire from the base of the tower?Show the steps you use to find the solution.
Monday, April 15, 2013 at 10:34am

Geometry Part 2
A highway makes an angle of 6 with the horizontal.This angle is maintained for a horizontal distance of 5 miles.To the nearest hundredth of a mile, how high does the highway rise in this 5- mile section?Show the steps you use to find the distance.
Monday, April 15, 2013 at 10:03am

Geometry Part 2
A triangle has side lengths 10,15,and 7.Is the triangle acute,obtuse,or right?Explain.
Monday, April 15, 2013 at 9:45am

geometry
ABCD is a quadrilateral with ∠ADC=∠ACD, ∠ACB=∠ABC and CD=7. If triangles ADC and ABC have perimeter 51 and 59, respectively, what is the value of BC?
Monday, April 15, 2013 at 4:19am

geometry
in the diagram below of quadrilateral abcd ac is a diagonal that biscets <bad and <bcd which statment can be used to prove that riangle abc is congruent to triangle adc
Sunday, April 14, 2013 at 4:36pm

geometry
the dimensions of the triangular lateral faces of a pyramid are dilated with a scale factor of 8/3 to create similar triangles. if the perimeter of one triangular face was 57 inches what is the perimeter of each of the dilated triangular faces
Saturday, April 13, 2013 at 4:56pm

geometry
a rectangular patio is 13 feet by 84 feet. In walking from one corner of the patio to the opposite corner, how much distance is saved by cutting diagonally across the patio rather than walking around the outer edge?
Thursday, April 11, 2013 at 7:59pm

Geometry
Arpit is thinking of a 2-digit number where the tens digit is twice the ones digit. How many different numbers can Arpit be thinking of?
Thursday, April 11, 2013 at 7:39pm

Geometry
A set of three distinct positive integers has mean 4 and median 5. What is the largest number in the set?
Thursday, April 11, 2013 at 7:38pm

Geometry
Two players each flip a fair coin. The probability that they get the same result can be expressed as a b where a and b are coprime positive integers. What is the value of a+b ?
Thursday, April 11, 2013 at 7:35pm

Geometry
If two six-sided dice are rolled, the probability that they both show the same number can be expressed as a b where a and b are coprime positive integers. What is the value of a+b ?
Thursday, April 11, 2013 at 7:33pm

Geometry(first one is typo)
Let ƒÆ=sin −1 7/25 . Consider the sequence of values defined by a n =sin(nƒÆ) . They satisfy the recurrence relation a n+2 =k 1 a n+1 +k 0 a n ,n¸N for some (fixed) real numbers k 1 ,k 0 . The sum k 1 +k 0 can be written as p q , where p...
Thursday, April 11, 2013 at 6:56pm

Geometry
Let ƒÆ=sin −1 7 25 . Consider the sequence of values defined by a n =sin(nƒÆ) . They satisfy the recurrence relation a n+2 =k 1 a n+1 +k 0 a n ,n¸N for some (fixed) real numbers k 1 ,k 0 . The sum k 1 +k 0 can be written as p q , where p...
Thursday, April 11, 2013 at 6:55pm

Geometry
ABC is a triangle with circumcenter O , obtuse angle BAC and AB<AC . M and N are the midpoints of BC and AO respectively. Let D be the intersection of MN with AC . If AD=1 2 (AB+AC) , what is the measure (in degrees) of ÚBAC ?
Thursday, April 11, 2013 at 6:54pm

Geometry
Let ƒÆ=sin −1 7 25 . Consider the sequence of values defined by a n =sin(nƒÆ) . They satisfy the recurrence relation a n+2 =k 1 a n+1 +k 0 a n ,n¸N for some (fixed) real numbers k 1 ,k 0 . The sum k 1 +k 0 can be written as p q , where p...
Thursday, April 11, 2013 at 6:17pm

Geometry
ABC is a triangle with circumcenter O, obtuse angle BAC and AB less than AC. M and N are the midpoints of BC and AO respectively. Let D be the intersection of MN with AC. If 2AD=(AB+AC), what is the measure of angle BAC ?
Thursday, April 11, 2013 at 11:27am

Geometry
2x^2-9x-5=0 Is it possible to combine 2x squared with 9x? Not sure how to tackle solving this one.
Wednesday, April 10, 2013 at 9:26pm

geometry
Which description does NOT guarantee that a trapezoid is isosceles? A. congruent bases B. congruent legs C. both pairs of base angles congruent D. congruent diagonals
Tuesday, April 9, 2013 at 9:31pm

Geometry
ABC is a triangle with circumcenter O , obtuse angle BAC and AB<AC . M and N are the midpoints of BC and AO respectively. Let D be the intersection of MN with AC . If AD=1 2 (AB+AC) , what is the measure (in degrees) of ÚBAC ?
Monday, April 8, 2013 at 10:29pm

Analytic Geometry/Calculus
We didn't go over the perpendicular form in class, only the parallel. Find the general form of the equation of the plane passing through the point and perpendicular to the specified vector or line.
Monday, April 8, 2013 at 7:40pm

how to name an angle in four ways?
Monday, April 8, 2013 at 7:26pm

geometry
On my last question, just posted, I asked what percent of the area of the target was shaded. The answer options were 5%, 10%, 20% or 80%?
Monday, April 8, 2013 at 6:45pm

geometry
There is a square with a star inside. The square has 25cm to show the length of one side. On the right, outside the square, it says 125cm squared, with a line pointing the center of the star in the square. The question is; The target of a shooting game features a shaded star ...
Monday, April 8, 2013 at 6:42pm

Math
I think this is geometry: There is a small box with a black frame around it. Inside the box, at the bottom, is an 8. Inside the box, to the right, is a 2. It looks like they are showing Length & Height. On the outside of the box, under the 8, there is a 10. To the right, ...
Monday, April 8, 2013 at 5:46pm

Geometry
Convex quadrilateral ABCD has sides AB=BC=21, CD=15 and AD=9. Given additionally that ∠ABC=60∘, what is the length of BD?
Monday, April 8, 2013 at 8:49am

geometry
The ratio of two similar prisms is 2:5 the volume of the larger is 375cm3 if sand is being poured into the smaller prism at 3cm3 per second how many seconds will it tAke to fill the smaller prism?
Sunday, April 7, 2013 at 9:40pm

Geometry
A sphere has a great circle circumference of 40pi feet. What's its volume?
Sunday, April 7, 2013 at 6:31pm

Geometry
Lobster fishers in Maine often use spherical buoys to mark their lobster traps. Every year the buoys must be repainted. An average buoy has a 12 inch diameter, and an average fisher has about 500 buoys. A quart of marine paint covers 175 ft squared. How many quarts of paint ...
Sunday, April 7, 2013 at 5:33pm

geometry
camera is 4 ft 6 inched off the ground 18 feet away from a silo, how tall is the silo
Saturday, April 6, 2013 at 10:54am

geometry
LMNO is a parallelogram. If NM = x + 15 and OL = 3x + 5, find the value of x, then find NM and OL
Friday, April 5, 2013 at 9:25am

Geometry
ABCD is a parallelogram. If ÚABC=35 degrees , what is the measure (in degrees) of ÚADC ?
Friday, April 5, 2013 at 12:12am

Geometry
How many three digit numbers have three distinct digits?
Friday, April 5, 2013 at 12:01am

geometry
if the midpoints of the sides of a parallelogram in succession are joined, the quadrilatral formed is a a parallogram. Prove this theorem in euclidean geometry using analytic techniques
Thursday, April 4, 2013 at 7:29pm

Analytic Geometry - lengths?
Square ABCD has sides of length 4, and M is the midpoint of CD . A circle with radius 2 and center intersects a circle with radius 4 and center A at points P and D . What is the distance from P to AD? Please help - I drew the diagram, but looks kinda wierd, and dunno which ...
Thursday, April 4, 2013 at 5:34pm

geometry
In the diagram, circle A is tangent to circle C, and segment BE is tangent to circle A. The radius of circle A is 11 meters and the radius of circle C is 8 meters. Find the area of triangle ABE to the nearest square meter.
Thursday, April 4, 2013 at 1:30am

geometry
Which quadrilaterals have 2 pairs of parallel sides?
Wednesday, April 3, 2013 at 4:20pm

geometry
A board on the wall in Jeremy's class has 4 right angles, 4 equal sides, and 2 pairs of parallel sides. Which quadrilateral is it?
Wednesday, April 3, 2013 at 3:52pm

Analytic Geometry - Circles and Areas
Let R denote the circular region bounded by x^2+y^2 = 36. The lines x=4 and y=3 partition R into four regions R1, R2 ,R3 , and R4. Let [Ri] denote the area of region Ri. If [R1]>[R2]>[R3]>[R4] , then compute [R1]-[R2]-[R3]+[R4]. Could someone help me, I don't ...
Wednesday, April 3, 2013 at 7:36am

geometry
Chris is making a painting with only triangles. He wants each side of the triangles to be the same length. What kind of triangle will he paint?
Tuesday, April 2, 2013 at 10:31pm

geometry
n the xy -plane, the graph of y = x^2 and the circle with center (0,1) and radius 3 have how many points of intersection?
Tuesday, April 2, 2013 at 4:23pm

geometry
a point F is at a certain distance from a line AB .Another point P is moving in a plane such that the ratio of it's distance from F and line AB remains constant .find the locus of the point P
Tuesday, April 2, 2013 at 12:42pm

GEOmetry(Special Coin Placement)
Three coins are randomly placed into different positions on a 4×10 grid. The probability that no two coins are in the same row or column can be expressed as a/b where a and b are coprime positive integers. What is the sum of a+b?
Tuesday, April 2, 2013 at 3:56am

GEOMETRY(POLYGON)
A regular polygon has interior angles of 150∘. A,B,C,D are 4 consecutive points of this polygon. What is the measure (in degrees) of ∠ADC?
Tuesday, April 2, 2013 at 3:39am

Geometry
What is the surface area and lateral area of a regular triangular pyramid if the slant is 7 and the altitude is 5?
Monday, April 1, 2013 at 10:40pm

geometry
Derive the distance formula (d) shown below for points A = (x1, y1, z1) and D = (x2, y2, z2). 2 2 1 2 2 1 2 d = (x2 − x1) + (y − y ) + (z
Monday, April 1, 2013 at 1:42pm

math
The line segment joining P(-6,7) and Q(5,-2) intersects the y-axis at the point R.Find the coordinates of R.
Saturday, March 30, 2013 at 7:36am

math
A(4,7) and B(-3,2) are points on a coordinate plane.Find the coordinates of a point C on the x-axis such that AC=BC .
Saturday, March 30, 2013 at 7:22am

Geometry: Student Correction (Stuck)
Joelle set up the following proportion: 4/6 = 5/x. Solve for x. Determine if proportion is correct. If not, explain what is wrong with it.
Friday, March 29, 2013 at 2:34pm

Geometry
Triangle ABC has vertices of A(0,0), B(–4,0)and C(–2,4). The coordinates of each vertex in triangle AEF are multiplied by 3 Is triangle ABC~AEF? Explain.
Friday, March 29, 2013 at 2:31pm

geometry
if the measurement of angle 1 plus the measurement of angle 4 equals 70, find the sum of angle 6 and angle 7
Friday, March 29, 2013 at 2:00pm

geometry
126x72 two sides of a triangle what is the third side
Friday, March 29, 2013 at 1:24am

Geometry
Find the surface area of a cylinder whereas diameter is 9 ft and height is 24 ft
Thursday, March 28, 2013 at 1:02am

Geometry
A right triangular prism has volume equal to 288 cm^3 . The height of the prism is 3 cm. One of the bases of the triangular face (not the hypotenuse) is equal to 12 cm, determine the length of the hypotenuse (in cm) of the triangular face.
Thursday, March 28, 2013 at 12:18am

Geometry
A right triangular prism has volume equal to 288 cm^3 . The height of the prism is 3 cm. One of the bases of the triangular face (not the hypotenuse) is equal to 12 cm, determine the length of the hypotenuse (in cm) of the triangular face.
Thursday, March 28, 2013 at 12:18am

Geometry
A right triangular prism has volume equal to 288 cm^3 . The height of the prism is 3 cm. One of the bases of the triangular face (not the hypotenuse) is equal to 12 cm, determine the length of the hypotenuse (in cm) of the triangular face.
Thursday, March 28, 2013 at 12:18am

Geometry
The vertices of a regular 10-gon are labeled V_1, V_2, \ldots V_n, which is a permutation of \{ 1, 2, \ldots, 10\}. Define a neighboring sum to be the sum of 3 consecutive vertices V_i, V_{i+1} and V_{i+2} [where V_{11}=V_1, V_{12}=V_2]. For each permutation \sigma, let N_\...
Wednesday, March 27, 2013 at 11:53pm

Geometry
ABCD is a trapezoid with AB < CD and AB parallel to CD. \Gamma is a circle inscribed in ABCD, such that \Gamma is tangent to all four sides. If AD = BC = 25 and the area of ABCD is 600, what is the radius of \Gamma?
Wednesday, March 27, 2013 at 11:52pm

Geometry
The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as \frac{a}{b} where a and b are coprime positive integers. Find a + b.
Wednesday, March 27, 2013 at 7:09pm

geometry
The scale factor is 5/4. Find the area of the pre-image if the area of the image is 150 in2.Show your work.
Wednesday, March 27, 2013 at 3:58pm

GEOMETRY
The squares of a 3×3 grid of unit squares are coloured randomly and independently so that each square gets one of 5 colours. Three points are then chosen uniformly at random from inside the grid. The probability that these points all have the same colours can be ...
Wednesday, March 27, 2013 at 3:05pm

Geometry
The value of y that minimizes the sum of the two distances from (3,5) to (1,y) and from (1,y) to (4,9) can be written as \frac{a}{b} where a and b are coprime positive integers. Find a + b
Wednesday, March 27, 2013 at 11:58am

Geometry
ABCD is a quadrilateral inscribed in a circle with AB = 1, BC = 3, CD = 4 and DA = 6. What is the value of \sec^2 \angle BAD?
Tuesday, March 26, 2013 at 11:34pm

Geometry
Determine the number of subsets of A=\{1, 2, \ldots, 10\} whose sum of elements are greater than or equal to 28 .
Tuesday, March 26, 2013 at 11:33pm

Geometry
ABC is an acute triangle with \angle BCA = 35 ^\circ. Denote the circumcenter of ABC as O and the orthocenter of ABC as H. If AO=AH, what is the value of \angle ABC (in degrees)?
Tuesday, March 26, 2013 at 11:31pm

Geometry
ABC is an isosceles triangle where AB = AC and BC = 60. D is a point on BC such that the perpendicular distance from D to AB and AC is 16 and 32, respectively. What is the length of AB?
Tuesday, March 26, 2013 at 11:31pm

Geometry
Two points are chosen uniformly at random on the unit circle and joined to make a chord C_1. This process is repeated 3 more times to get chords C_2, C_3, C_4. The probability that no pair of chords intersect can be expressed as \frac{a}{b} where a and b are coprime positive ...
Tuesday, March 26, 2013 at 11:29pm

Geometry
Two points are chosen uniformly at random on the unit circle and joined to make a chord C_1. This process is repeated 3 more times to get chords C_2, C_3, C_4. The probability that no pair of chords intersect can be expressed as \frac{a}{b} where a and b are coprime positive ...
Tuesday, March 26, 2013 at 11:29pm

Geometry
When writing a math expression, any time there is an open bracket "(", it is eventually followed by a closed bracket ")". When we have a complicated expression, there may be several brackets nested amongst each other, such as in the expression (x+1)*((x-2...
Tuesday, March 26, 2013 at 11:27pm

geometry
what is tan-1 3.5= to
Tuesday, March 26, 2013 at 7:59pm

Geometry
When you use the distance formula, you are building a _____ triangle whose hypotenuse goes between two given points. A.right B.equilateral C.acute D.None of these
Tuesday, March 26, 2013 at 10:02am

geometry
The volume of a small circle is 10 cubic meters. Find the volume of the larger sphere in cubis meters.
Tuesday, March 26, 2013 at 9:58am

geometry
A. Derive the distance formula (d) shown below for points A = (x1, y1) and B = (x2, y2). 2 2 1 2 2 1 d = (x − x ) + ( y − y ) Note: Look for an application of the Pythagorean theorem where the red line, segment AB, is the hypotenuse of a right triangle. You can ...
Monday, March 25, 2013 at 1:58pm

geometry
can someone please show me the answer for this problem ? a tree is situated on level ground from a point 135 feet from the base of the tree the measure of the angle of elevation from the ground to the top of the tree is 43 degrees which is the height of the tree to the nearest...
Monday, March 25, 2013 at 1:39pm

CST GEOMETRY
a tree is situated on level ground from a point 135 feet from the base of the tree the measure of the angle of elevation from the ground to the top of the tree is 43 degrees which is the height of the tree to the nearest foot?
Monday, March 25, 2013 at 1:23pm

GEOMETRY(CIRCLE)
Three circles with different radii have their centers on a line. The two smaller circles are inside the largest circle, and each circle is tangent to the other two. The radius of the largest circle is 10 meters. Together the area of the two smaller circles is 68% of the area ...
Monday, March 25, 2013 at 2:11am

GEOMetry(TRIANGLE)
ABC is an isosceles triangle where AB=AC and BC=60. D is a point on BC such that the perpendicular distance from D to AB and AC is 16 and 32, respectively. What is the length of AB?
Monday, March 25, 2013 at 2:10am

GEOmetry!!.....
ABCD is a trapezoid with AB<CD and AB parallel to CD. Γ is a circle inscribed in ABCD, such that Γ is tangent to all four sides. If AD=BC=25 and the area of ABCD is 600, what is the radius of Γ?
Monday, March 25, 2013 at 2:05am

Two circles of different sizes are tangent at T. A is on the smaller circle, whereas B is on the larger one. Also, segment CD is tangent to the smaller circle, and crosses the goes through the larger circle and hits the other side at D. TD is a diameter, and AB || CD. If the ...
Sunday, March 24, 2013 at 8:17am

geometry
The measures of two consecutive angles of a parallelogram are in the Ratio 3:7. Find the measure of an acute angle of the parallelogram
Saturday, March 23, 2013 at 3:16pm

Geometry
The length of one base of a trapezoid is 19 inches and the length of the median is 16 inches. Find the length of the other base.
Friday, March 22, 2013 at 12:08am

Geometry
Abcd is an isosceles trapezoid with a(10,-1) b(8,3) and c(-1,3). Find the coordinates of d
Friday, March 22, 2013 at 12:04am

Geometry
For diagonals of square Abcd intersect at e . If ae =2x+6 and bd =6x-10 find ac
Thursday, March 21, 2013 at 11:35pm

Geometry
ABCD is a rectangle with B(-4,2) andD (10, 6). find the coordinates of A. Please help and tell me how you got it so I can understand
Thursday, March 21, 2013 at 10:17pm

Geometry
ABCD is a rectangle with B(-4,2) andD (10, 6). find the coordinates of A. Please help and tell me how you got it so I can understand
Thursday, March 21, 2013 at 10:17pm

Geometry
Find the sum of the measures of the exterior angles of a convex 39-gon?
Thursday, March 21, 2013 at 10:01pm

Circle Geometry - chords in a circle
Let PQ, RS , and TU be parallel chords of a circle. The distance between chords PQ and RS is 4, and the distance between chords RS and TU is also 4. If PQ = 78 TU=50 , then find RS. how to do this? Draw some lines?
Thursday, March 21, 2013 at 9:01pm

Math (Geometry)
Given: ABCD is arhombus. prove:AC bisects angle BAD and angel BCD.
Thursday, March 21, 2013 at 6:12pm

algebra and geometry
1) in a random survey of students, 152 students could swim and 48 could not. what is the probability that a student can swim? 2) suppose you spin two spinners, one marked 1 through 4 and the other marked A through E. how many possible outcomes are there? 3) an ice cream store ...
Thursday, March 21, 2013 at 5:34pm

geometry
Cone a is 9 inches tall and has a diameter of 8 inches. Cone b has a diameter of 12 inches. What height does cone b need to be in order to hold the same volume as cone A
Thursday, March 21, 2013 at 5:34pm

GEOMETRY
Let P=(p1,p2,…,p7) be a permutation of the integers 1,2,…7. For how many permutations P are all seven sums S1=p1,S2=p1+p2,…,S7=p1+p2+⋯+p​7 not multiples of 3?
Thursday, March 21, 2013 at 5:14pm

GEOMETRY
A right triangle has perimeter equal to 198 and area equal to 1386. What is the length of the hypotenuse?
Thursday, March 21, 2013 at 5:13pm

Geometry - Circles and tangents
Two circles of radius 1 are externally tangent at Q . Let PQ and QR be diameters of the two circles. From P a tangent is drawn to the circle with diameter QR , and from R a parallel tangent is drawn to the circle with diameter PQ . Find the distance between these two tangent ...
Thursday, March 21, 2013 at 5:07pm

Geometry - semicircle inside isosceles triangle
Isosceles triangle ABC has sides of length AB=AC=25 and BC=40 . Find the area of a semicircle inscribed in triangle ABC with diameter along BC . Please help I do not know how to start....
Thursday, March 21, 2013 at 2:14pm

geometry
A wall pennant is in the shape of an isosceles triangle. Each of the two equal sides measures 18 in more than the third side, and the perimeter of the triangle is 54in. What are the lengths of the sides of the pennant?
Thursday, March 21, 2013 at 11:41am

GEOMETRY
ANGLES X AND Y ARE SUPPLEMENTARY ,AND THE MEASURE OF ANGLES X IS 24 DEGREES GREATER THAN THE MEASURE OF ANGLE Y. FIND THE ANGLE MEASURES.
Wednesday, March 20, 2013 at 10:44pm

geometry
Lin says that a hexagon has six sides. Chris says that it has eight sides. Whose statement is correct?
Wednesday, March 20, 2013 at 2:42pm

geometry
the perimeter of a quadrilateral is 30 cm. what is the maximum possible area of the quadrilateral.
Wednesday, March 20, 2013 at 1:56am

geometry
Ok, so I have this worksheet due, and it's for a lot of points, so can you check over my answers please? Can you leave your email so I could forward the scan to you? The worksheet has a lot of labeled shapes, so it's hard to describe in text. These are the answers that...
Tuesday, March 19, 2013 at 1:51pm

analytic geometry/graphing problem
The vertices of a triangle are the points of intersection of the line y=-x-1, x=2 and y = 1/5x + 13/5. Find an equation of the circle passing through all three vertices. I don't understand how to solve this: should I set them all equal to find the vertices? But afterwards...
Tuesday, March 19, 2013 at 1:47pm

simple GEOMETRY!!
In triangle ABC, ∠ABC=30∘,∠ACB=60∘​;. D is a point in triangle ABC such that DB and DC bisect angles ABC and ACB respectively. What is the measure (in degrees) of ∠BDC?
Tuesday, March 19, 2013 at 7:07am

geometry
The angles in triangle ABC satisfy 6sin∠A=3√3sin∠B=2ͩ​0;2sin∠C. If sin2∠A=a/b, where a and b are coprime positive integers, what is the value of a+b?
Monday, March 18, 2013 at 8:26pm

geometry
ABCD is a parallelogram. Let C′ be a point on AC extended such that the length of AC′=1.2AC. Let D′ be on the segment BD such that the length of BD′=0.9BD. The ratio of the area of the quadrilateral ABC′D′ to the area of the parallelogram ...
Monday, March 18, 2013 at 8:12pm

Geometry
A two-player game is played with two piles of stones, with sizes m,n. On a player's turn, that player can remove any number of stones from one pile, or the same number of stones from each pile. A player loses when they are unable to take a stone. If 1 \leq m,n \leq 30, for...
Monday, March 18, 2013 at 7:29pm

geometry
Consider the region in Quadrant 1 totally bounded by the 4 lines: x = 3, x = 9, y = 0, and y = mx (where m is positive). Determine the value of c such that the vertical line x = c bisects the area of that totally bounded region. Needless to say, your first task should be to ...
Monday, March 18, 2013 at 7:25pm

geometry
Consider the region in Quadrant 1 totally bounded by the 4 lines: x = 3, x = 9, y = 0, and y = mx (where m is positive). Determine the value of c such that the vertical line x = c bisects the area of that totally bounded region. Needless to say, your first task should be to ...
Monday, March 18, 2013 at 7:18pm

geometry
find the perimeter of the rectangle if the area is 6m+3m
Monday, March 18, 2013 at 5:52pm

geometry
Carlos want to show a rectangle in his drawing. What dotes he have to do to the drawing below to make the rectangle a closed shape?
Monday, March 18, 2013 at 3:51pm

geometry
A triangle has side lengths of 6, 8, and 9. What type of triangle is it?
Monday, March 18, 2013 at 1:50pm

Geometry
BC is a triangle with ∠BAC=60∘,AB=5 and AC=25. D is a point on the internal angle bisector of ∠BAC such that BD=DC. What is AD^2? It is not stated that D lies on BC. This assumption is not necessarily true.
Monday, March 18, 2013 at 5:21am

Geometry
ABC is a right angled triangle with ∠ABC=90∘ and side lengths AB=24 and BC=7. A semicircle is inscribed in ABC, such that the diameter is on AC and it is tangent to AB and BC. If the radius of the semicircle is an improper fraction of the form a/b, where a and b ...
Monday, March 18, 2013 at 5:20am

chemistry
Construct the correct structure for AsClF42-. Please construct the molecule such that the dipole is oriented vertically up or vertically down. - Name the type of hybrid orbitals the central atom forms. - Name the molecular geometry of the compound. - State whether the molecule...
Monday, March 18, 2013 at 4:54am

Math Geometry
A cube has 8 vertices. For each pair of distinct vertices, we connect them up with a line segment. There are (8) (2) =28 such line segments. For each of these 28 line segments, we mark the midpoint. How many distinct points have been marked as the midpoints?
Monday, March 18, 2013 at 2:56am

geometry
in the accompanying diagram, RST is a right triangle, SU is the altitude to hypotenuse RT, RT=16 and RU=7
Monday, March 18, 2013 at 12:56am

geometry
the perimeter of parallelogram QRST is 26cm. If ST=e 6cm what is the length of RS
Sunday, March 17, 2013 at 9:30pm

geometry
In the graph below, what is the line of reflection for XYZ and X'Y'Z'?
Sunday, March 17, 2013 at 5:48pm

hs geometry
to find the height of a tree, a student 53 inches in height measures the length of the tree's shadow and the length of his own shadow. The student casts a shadow 63 inches in length and the tree casts a shadow 67 inches in length
Sunday, March 17, 2013 at 10:18am

geometry
1. Find the area of the parallelogram. (1 point) 3,302 ft2 3,484 ft2 3,752 ft2 4,020 ft2 2. Find the area of the triangle. (1 point) 21.84 cm2 21.2 cm2 10.92 cm2 10.6 cm2 3. Jorge plans to paint a bedroom wall that is shaped like a trapezoid. The bottom edge of the wall is 22....
Saturday, March 16, 2013 at 7:33pm

geometry
to find the height of a tree, a student 53 inches in height measures the length of the tree's shadow and the length of his own shadow. The student casts a shadow 63 inches in length and the tree casts a shadow 67 inches in length
Saturday, March 16, 2013 at 6:45pm

geometry and combination
On a straight line ℓ, we have an infinite sequence of circles Γn, each with radius 1/2^n, such that Γn is externally tangential to the circles Γn−1,Γn+1 and the line ℓ. Consider another infinite sequence of circles Cn, each with radius rn...
Saturday, March 16, 2013 at 8:30am

Geometry
What translation rule can be used to describe the result of the composition of (x, y) (x – 9, y – 2) and (x, y) (x + 1, y – 2)
Saturday, March 16, 2013 at 3:18am

Geometry
Assuming that the circumference of each circle passes through the centers of the other two, and that the radius of each circle is 1, what is the total combined area?
Thursday, March 14, 2013 at 4:48pm

Geometry
The coordinates of the vertices of a parallelogram are given. Find the possible coordinates for the fourth vertex. L(0,4), M(6,0),N(2,4)
Thursday, March 14, 2013 at 4:34pm

geometry
From point Q on circle P, an arc is drawn that contains P. Find the measure of the arc AQB that is cut off.
Thursday, March 14, 2013 at 1:51pm

geometry
A right triangle prism has a volume of 2 cubic inches. A second right triangle prism is similar to the first one and has a volume of 128 cubic inches. A. What is the scale factor to go from the first prism to the second? B. What is the scale factor to go from the second prism ...
Wednesday, March 13, 2013 at 11:53pm

Geometry
A jet is cruising at 360 mph and at an elevation of 34650 feet and on course to pass directly over a golf course. A man on the seventh green sees the jet and quickly calculated the angle of elevation to be five degrees. How long until the jet passes overhead? Nearest seconds ...
Wednesday, March 13, 2013 at 11:01pm

geometry
Alexa has 200 square inches of wrapping paper left. Which is the side length of a cube she could not cover with the paper?
Wednesday, March 13, 2013 at 10:01pm

geometry
What is 2(1x1/2)+2(1x1/4)+2(1/2x1/4)
Wednesday, March 13, 2013 at 8:40pm

Geometry
If EF=2x-19, FG=3x-15, and EG=26, find the values of x, EF, And FG
Wednesday, March 13, 2013 at 6:46pm

geometry help!!
A parallelogram ABCD has perimeter equal to 124. Let E be the foot of the perpendicular from A to BC, and let F be the foot of the perpendicular from A to CD. If AE=7 and AF=24, what is the area of the parallelogram?
Wednesday, March 13, 2013 at 4:36pm

geometry
If the measure of ÐDAB = 50°, and ÐDAC = 20°, what is ÐCAB?
Wednesday, March 13, 2013 at 3:37pm

geometry
prove that rectangles do not exist in hyperbolic geometry
Wednesday, March 13, 2013 at 3:36pm

Math/Geometry
Two circles of radius r1 and r2 are extenally tangential to each other and are also externally tangential to a staight line l. Another circle of some unknown radius is externally tangential to both the circles and to the straight line l. Find the adius of that circle.
Wednesday, March 13, 2013 at 6:12am

geometry!
Γ is a circle with center O. A and B are points on Γ such that the sector AOB has a perimeter of 40. Amongst all circular sectors with a perimeter of 40, what is the central measure of ∠AOB (in radians) of the sector with the largest area?
Wednesday, March 13, 2013 at 1:18am

Geometry
7 points are placed in a regular hexagon with side length 20. Let m denote the distance between the two closest points. What is the maximum possible value of m?
Tuesday, March 12, 2013 at 10:15pm

Geometry
In distinct odd-town, the inhabitants want to number their houses with 3-digit positive integers that are odd, which have all distinct digits. What is the maximum number of houses in odd-town?
Tuesday, March 12, 2013 at 10:15pm

Geometry
Let S = \{ 1, 2, 3, \ldots 12\} and T_1, T_2, \ldots T_a be subsets of S such that T_i \not \subset T_j \, \forall i \neq j . What is the maximum possible value of a?
Tuesday, March 12, 2013 at 10:06pm

Geometry
Determine the largest positive integer N, such that given any N-gon (not necessarily convex), there exists a line (infinitely extended in both directions) that contains exactly 1 edge of the N-gon. The figure in blue is an example of a 20-gon that doesn't satisfy the ...
Tuesday, March 12, 2013 at 10:05pm

Geometry
Six standard six-sided die are rolled. Let p be the probability that the dice can be arranged in a row such that for 1\leq k \leq 6 the sum of the first k dice is not a multiple of 3. Then p can be expressed as \frac{a}{b} where a and b are coprime positive integers. What is ...
Tuesday, March 12, 2013 at 10:04pm

Geometry
Given: segment BD bisects angle ABC; AB=BC. Prove: triangle ABD congruent to triangle CBD
Tuesday, March 12, 2013 at 8:12pm

Geometry
The Z company specializes in caring for zebras. They want to make a 3-dimensional "Z" to put in front of their company headquarters. The "Z" is 15 inches thick and the perimeter of the base is 390 inches. What is the lateral surface area of this "Z"?
Tuesday, March 12, 2013 at 7:34pm

geometry
ABCD is a trapezoid with AB parallel to DC. If AB=25, BC=24, CD=50 and AD=7, what is the area of ABCD?
Tuesday, March 12, 2013 at 6:07pm

geometry
A parallelogram ABCD has perimeter equal to 124. Let E be the foot of the perpendicular from A to BC, and let F be the foot of the perpendicular from A to CD. If AE=7 and AF=24, what is the area of the parallelogram?
Tuesday, March 12, 2013 at 6:06pm

GEOmetry..
7 points are placed in a regular hexagon with side length 20. Let m denote the distance between the two closest points. What is the maximum possible value of m?
Tuesday, March 12, 2013 at 12:12pm

Geometry
Point M is the midpoint of the line equation ABMC. Which of the following is not true? (1)AM = MC (2) AB < MC (3) AM > BC or (4) BM < MC
Tuesday, March 12, 2013 at 11:05am

geometry
Square ABCD and circle T have equal areas and share the same center O.The circle intersects side AB at points E and F.Given that EF=√(1600-400π),what is the radius of T ?
Tuesday, March 12, 2013 at 9:43am

geometry
A pyramid has a square bottom, with an area equal to 64 squares meters. the height of the pyramid is 7 inches. if you start at the top of the pyramid and slide all the way down the middle of one of the sides how many feet will you move?
Tuesday, March 12, 2013 at 2:41am

Geometry
Given: segment AB is congruent to segment BC; angle 1 is congruent to angle 2 Prove: triangle ABC is congruent to triangle DEC
Monday, March 11, 2013 at 9:35pm

Geometry
180° about z takes (x,y,z) -> (-x,-y,z) 90° about x takes (x,y,z) -> (x,z,-y) so, your two rotations take (x,y,z) -> (-x,z,y)... z axis top/bottom, x/y axis right/ left... A dice has 3 on the top, 4 bottom, 1 left, 2 right, 5 left back, 6 right back... after ...
Monday, March 11, 2013 at 8:28pm

geometry
If ABCDE and LMNOP are similar polygons, then the ratio of AB to LM must be equal to the ratio of CD to NO. (Assume and are corresponding sides, as are and .)
Monday, March 11, 2013 at 2:49pm

Geometry
ABC is a triangle with area equal to 20 . The incircle of triangle ABC has radius equal to 2 and the circumcircle of triangle ABC has radius equal to 6 . If sinA+sinB+sinC=a/b , where a and b are coprime positive integers, what is the value of a+b ?
Monday, March 11, 2013 at 2:01pm

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