Wednesday

July 29, 2015

July 29, 2015

**Please...help me over here.,Sequence and series**

Insert three geometry means between 1 and 81. I can't even solve it.
*Tuesday, April 16, 2013 by Jnr John*

**Geometry Part 2**

At a track meet,50 people ran the 100- meter dash.2 people finished in 11 seconds,5 people finished in 12 seconds,8 people finished in 13 seconds,10 people finished in 14 seconds,21 people finished in 15 seconds,2 people finished in 16 seconds,and 2 people finished in 17 ...
*Tuesday, April 16, 2013 by Karen*

**Geometry**

Circle G with center O is tangential to PA at A . Line PO extended intersects G at B (PO<PB ). C is a point on AB such that PC bisects angle APB .What is the measure (in degrees) of angle PCA ?
*Tuesday, April 16, 2013 by Andy*

**geometry**

For a cone, if the radius was quadrupled and the slant height was reduced to one sixth of its original size, what would be the formula to find the modified surface area?
*Monday, April 15, 2013 by Courtney*

**Geometry **

The grade of a road or a railway road bed is the ratio rise/run, usually expressed as a percent. For example, a railway with a grade of 5% rises 5 ft for every 100 ft of horizontal distance. 1. The Johnstown, Pennsylvania, inclined railway was built as a "lifesaver" ...
*Monday, April 15, 2013 by Stacey*

**geometry**

A cone has a circular base, a perpendicular height equal to 21cm, and a semi-vertical angle of 30degrees. Calculate the slant height of the cone. Find the area of its base.(take pie to be 22/7)
*Monday, April 15, 2013 by Londie munyai*

**Geometry Part 2**

Janine made a cylindrical vase in which the sum of the lateral area and area of one base was about 3000 square centimetres.The vase had a height of 50 centimetres .Find the radius of the vase.Explain your method you would use to find the radius .
*Monday, April 15, 2013 by Karen*

**Geometry Part 2**

State whether the transformation of a Preimage and Image circles appears to be a rigid motion?Explain
*Monday, April 15, 2013 by Karen*

**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 by Karen*

**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 by Karen*

**Geometry Part 2**

A triangle has side lengths 10,15,and 7.Is the triangle acute,obtuse,or right?Explain.
*Monday, April 15, 2013 by Karen*

**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 by Ian*

**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 by lexi*

**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 by stormy*

**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 by Neima*

**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 by Andy*

**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 by John*

**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 by John*

**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 by stranger*

**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 by stranger*

**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 by stranger*

**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 by Anonymous*

**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 by Jacob*

**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 by Andy*

**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 by Nick*

**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 by Anonymous*

**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 by Jacob*

**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 by Arya*

**7th grade math/ geometry**

how to name an angle in four ways?
*Monday, April 8, 2013 by karizma*

**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 by Sandy*

**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 by Sandy*

**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 by Sandy*

**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 by stranger*

**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 by Olivia *

**Geometry**

A sphere has a great circle circumference of 40pi feet. What's its volume?
*Sunday, April 7, 2013 by Shaniqua*

**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 by Shaniqua*

**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 by steve*

**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 by ashley*

**Geometry**

ABCD is a parallelogram. If ÚABC=35 degrees , what is the measure (in degrees) of ÚADC ?
*Friday, April 5, 2013 by Jacob*

**Geometry**

How many three digit numbers have three distinct digits?
*Friday, April 5, 2013 by Jacob*

**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 by denise*

**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 by Knights*

**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 by joe*

**geometry**

Which quadrilaterals have 2 pairs of parallel sides?
*Wednesday, April 3, 2013 by Ms.Vargas*

**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 by Ms.Vargas*

**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 by Knights*

**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 by Ms.Vargas*

**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 by naomie*

**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 by mani*

**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 by please help me out!!*

**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 by please help me out!!*

**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 by K*

**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 by denise*

**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 by Lydia*

**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 by Lydia*

**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 by Christine*

**geometry**

126x72 two sides of a triangle what is the third side
*Friday, March 29, 2013 by Anonymous*

**Geometry**

Find the surface area of a cylinder whereas diameter is 9 ft and height is 24 ft
*Thursday, March 28, 2013 by Bria *

**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 by John Corner*

**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 by John Corner*

**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 by John Corner*

**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 by Jason*

**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 by Jason*

**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 by John*

**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 by bre*

**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 by Anonymous*

**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 by Anonymous*

**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 by Austin*

**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 by Dan*

**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 by Dan*

**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 by Dan*

**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 by jason*

**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 by jason*

**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 by jason*

**geometry**

what is tan-1 3.5= to
*Tuesday, March 26, 2013 by joan*

**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 by Brad*

**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 by Bryce*

**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 by denise*

**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 by ,,,,,*

**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 by carolina*

**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 by i need help from anyone!*

**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 by i need help from anyone!*

**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 by i need help from anyone!*

**Please help with circle tangents geometry**

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 by Knights*

**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 by Kay*

**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 by Alice*

**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 by Alice*

**Geometry**

For diagonals of square Abcd intersect at e . If ae =2x+6 and bd =6x-10 find ac
*Thursday, March 21, 2013 by Alice*

**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 by Mariel*

**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 by Mariel*

**Geometry**

Find the sum of the measures of the exterior angles of a convex 39-gon?
*Thursday, March 21, 2013 by Mariel*

**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 by Knights*

**Math (Geometry)**

Given: ABCD is arhombus. prove:AC bisects angle BAD and angel BCD.
*Thursday, March 21, 2013 by bhfewbidsukj*

**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 by Anonymous*

**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 by sabrina l. thomas 916 gphs lol bk*

**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+⋯+p7 not multiples of 3?
*Thursday, March 21, 2013 by Anonymous*

**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 by Anonymous*

**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 by Knights*

**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 by Knights*

**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 by Laura*