Sunday

October 4, 2015
Number of results: 8,454

**Geometry Proofs, HELP!!**

I need help, I have a Geometry Exam on Monday. And I don't understand proofs one bit. If someone could help me with some proofs that would be awesome!! You have to post specific questions to get specific help. My experience is that on proofs studying with a competent friend is...
*January 3, 2007 by ccseagle*

**GEOMETRY**

Big problem with proofs. How do you go about doing triangle proofs?
*December 3, 2008 by Emiliana*

**geometry proofs**

i need help with inderect proofs and proving lines perpendicular.. PLEASE!!!! You have to be much more specific on your question.
*December 12, 2006 by Angel Metellus*

**Math- Geometry Proofs**

What are some ways to prove that a triange is isoscles? i have to make a two column proof based on a problem. What is the exact problem I need help with my geometry homework. We are doing proofs and i need some help because proofs are really hard!! def. isosceles -or- if two ...
*November 21, 2006 by Jenny*

**geometry**

ughh i need help i dnt like proofs we'll here it the instructions write a two column proof the segment addition postulate is useful for this proof also. remember that the transitive && substitution properties are common in proofs this one requires substitution.. given is rs=xy...
*September 24, 2009 by samm*

**math geometry**

how can i prove in geometry proofs that something is a midpoint of a line? thanks
*November 12, 2013 by Annie*

**geometry**

Can somebody help me with Proofs in Geometry Given:M<ABE=M<CBD
*June 19, 2012 by Jay*

**geometry**

how do you do equality proofs?
*November 2, 2008 by john*

**geometry**

Ab=5 what's the reason ? Ch 2.6 segment proofs
*September 8, 2011 by tania *

**Geometry**

Indirect Proofs Prove a triangle cannot have 2 right angles. 1) Given triangle ABC. 2) Assume angle A and angle B are both right angles is true by one of two possibilities (it is either true or false, so we assume it is true) This is my first time to do indirect proofs, so if ...
*November 18, 2010 by chica*

**Geometry Proofs (w/Pic)**

If PQRS is a rectangle and M is the midpoint of RS, prove PM is congruent to QM. P----------------Q |\ /| | \ / | | \ / | | \ / | | \ / | R--------M-------S *be as explanatory as possible
*January 18, 2014 by HELP*

**geometry**

ok... i need help with geometric proofs..i have a test tomorrow and dont understand it one bit..
*November 4, 2007 by romina*

**geometry proofs**

given ABC is a triangle. Ad is the altitude to BC. Ad biscects angle BAC. Prove: Ad is the median to BC
*December 14, 2010 by SKipper*

**Geometry / Proofs**

Given: Triangle ABC with AD bisecting angle BAC, and AE is congruent to ED (both line segments). Prove: AE/AC = BD/BC. Statements Reasons
*August 27, 2013 by Lisa*

**geometry**

I HAVE BEEN STUCK ON THIS QUESTION FOREVER. CAN SOMEONE HELP ME OUT WITH IT. DO THEOREMS REQUIRE PROOFS? EXPLAIN EITHER YES OR NO IN ONE OR TWO SENTENCES.
*November 20, 2007 by alan*

**Geometry**

Given angle 4=65 and angle 5=115 write two paragraph proofs to show that r is parallel to s
*March 18, 2010 by Anonymous*

**Geometry Proofs HELP!!**

how do i do this? given: m//n g//h Prove: angle 4 congruent to angle 16
*November 21, 2007 by Katherine*

**discrete math**

If p is prime prove that p^1/2 (root p) is irrational. Generalize the proof that sqrt 2 is irrational. You can find several proofs here: http://www.cut-the-knot.org/proofs/sq_root.shtml You should be able to apply the proof to all square roots of prime integers.
*March 7, 2007 by romulo*

**geometry**

given:m//n & g//h Prove angle 4 is congrunt to angle 16. I have no idea how to do proofs..my teacher is really bad at explaining things.
*November 21, 2007 by katie*

**Proofs Geometry **

What is the statement and the reason for Given: and mEGF∠=60 mAGF∠=°90; Prove: mAGB∠=°30. Thank you!
*November 13, 2011 by Allan*

**Geometry - Proofs**

Given: Line cd is the perdendicular bisector of line ab e is on line cd Prove EB=ea
*February 14, 2008 by Julie*

**Geometry**

I need help on a geometry proof!!!! If Line AB is parallel to Line DC and Line BC is parallel to line AD, prove that angle B is congruent to angle D. The picture is basically a square or parallelogram with line DC on the Top and Line AB on the bottom, and as u can tell A and D...
*November 1, 2009 by Emily*

**Geometry**

Yes, I'm this desperate. I just have problems with coming up with the statements for two column proofs. Answers would be appreciated. Given: line segment AX congruent to line segment DX, line segment XB is congruent to XC. Prove: Line segment AC is congruent to line segment BD.
*October 5, 2010 by Derp*

**math**

what are indirect proofs
*September 5, 2007 by brandon*

**math in general**

what is the point of proofs?
*November 21, 2007 by Kevin*

**Geometry**

Reflective sets of angles Given: <ABC is congruent to <EFG <1 is congruent to <3 Prove: <2 is congruent to <4 Statements: Reasons: 1.) <ABC is congruent to <EFG 1.) Given (m<ABC is congruent to m<EFG) <1 is congruent to <3 (m<1 is ...
*September 28, 2010 by Happy Face*

**GEOMETRY**

Reflective sets of angles Given: <ABC is congruent to <EFG <1 is congruent to <3 Prove: <2 is congruent to <4 Statements: Reasons: 1.) <ABC is congruent to <EFG 1.) Given (m<ABC is congruent to m<EFG) <1 is congruent to <3 (m<1 is ...
*September 28, 2010 by Happy Face*

**trig proofs**

cotx+tanx=secx+cscx
*January 15, 2013 by katie *

**geometry**

We are learning about proofs. We drew lines between noncollinear points. Our table showed 2 points >> 1 line segment, 3 point >> 3 line segments, 4 points >> 6 line segments, 5 points >> 10 line seg, 6 points >> 15 line seg. etc. Write an ...
*October 8, 2008 by Zack*

**honors/Geometry**

how do you write out proofs? To be more specific with my question, how do you find the alternate exterior angles theorem? Be sure the result is not a postulate. If it is then there's nothing to prove, it's given. If it is a theorem -a provable statement- then review the ...
*September 27, 2006 by chelsea*

**geometry proofs **

given: line QO congruent to QN, line NM CONGRUENT TO OP Prove: triangle QMP IS ISOCELES 5. TRIANGLE QNM CONGRUENT TO TRIANGLE QOP WHAT IS THE REASON 7. TRIANGLE QMP IS ISOCELES WHAT IS THE REASON
*December 8, 2009 by haley *

**Proofs and numbers **

Use Fermat's Little Theorem to find the remainder on division of 5120 by 19.
*November 28, 2012 by yin*

**Proofs and numbers**

Solve the congruence 24x identical to 42 (mod 30) for x. List all the solutions (if there are any).
*November 28, 2012 by yin*

**Proofs and numbers**

Use Fermat's Little Theorem to find the remainder on division 5^120 by 19.
*November 28, 2012 by yin*

**Trig Proofs! **

I'm having trouble solving this proof. Can you help? cos^3+sin^3/cosx+sinx = 1-sinxcosx Thanks!:)
*March 8, 2012 by Kels.*

**Don't understand this Geometry question**

Isosceles triangle XYZ is placed on a coordinate plane to be used for a coordinate proof. What should the coordinates of its vertices be? a. (-a,0), (0,0), (a,0) b. (0,0), (0,-a), (-a,0) c. (0,0), (0,a), (a,0) d. (0,0), (0,-a), (a,0) ??? 5 REASONS WHY SOCIAL STUDIES IS ...
*August 28, 2006 by Ellie*

**Geometry Help & Proofs**

The ratio of the volume of Cylinder A to the volume of Cylinder B is 1:5. Cylinder A is similar to Cylinder C with a scale factor of 1:2 and Cylinder B is similar to Cylinder D with a scale factor of 1:3. What is the ratio of the volume of Cylinder C to the volume of Cylinder ...
*May 14, 2014 by Anonymous*

**Calculus**

Prove via Mathematical Induction that (7*n) - 1 is divisible by 6. I have that it is divisble when n=1, but not n=2 and so on. How should I write the inductive proofs?
*August 11, 2012 by Timofey*

**geometry**

1.in which geometry do lines no contain an infinite number of points? (a) plane coordinate geometry (b) discrete geometry (c) graph theory 2. in which geometry do points have thickness? (a) plane coordinate geometry (b) discrete geometry (c) graph theory i think the answer is...
*August 30, 2011 by SoccerStar*

**Geometry**

Geometric Proofs.... Write a justification for each step Given: AB = EF, B is the midpoint of Line AC and E is the midpoint of Line DF. 1. B is the midpoint of Line AC and E is the midpoint of Line DF. 2. Line AB is congruent to Line BC and Line DE is congruent to Line DF 3. ...
*September 20, 2011 by David*

**Geometry**

Writing indirect proofs. Can someone please check for me. I am not sure If this is correct.Thanks much Given: triangle ABC angle B=120 degree Proof: Triangle A does not equal 60 degree Plan: Using an indirect proof, using the paragraph method My answer. Assume temporarily that...
*June 4, 2007 by DANIELLE*

**I need an answer--molecular/electron geometry**

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :) *My earlier post wasn't answered, so I'd appreciate some help please =]
*February 8, 2011 by Kate*

**Molecular and Electron geometry**

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :) *My earlier post wasn't answered, so I'd appreciate some help please =]
*February 8, 2011 by Kate*

**Trig Proofs**

Please solve this proof Tan(pi/4 +x)+ Tan(pi/4+x)= 2Sec2x
*April 27, 2009 by Kim*

**Trig Proofs**

Please Help: please solve this proof: cosx- cosy = -2sin(x+y/2)sin(x-y/2)
*April 27, 2009 by Kim*

**math**

Can someone explain the Triangle Similarity, Or the AA Similarity, Theorem? We're doing proofs, and I don't think I understood the wording.
*April 15, 2009 by Libby*

**similarity proofs**

Given: (AX/CX)=(BX/DX) prove: angle B = angle D
*March 12, 2009 by Anthony*

**AP Calc.**

I'm working on Proofs for Limits. So my question is how the bloody hell do I do this. This is the equation I am working with: F(x)= (x^2-5x+8)(x-3)/(x-3) Use the limit properties to prove algebraically that limf(x)=2 as X approaches 3
*October 3, 2007 by Chii*

**MATH PROOFS**

PROVE: P(( union )[i=1]^(k))=(∑)P(A[i]^ ) ∀ A[i]^ such that (A[i]^ intersect A[]j = ∅ ∀i <>j) ∀k
*March 16, 2011 by Athena*

**Molecular and Electron geometry**

Can anyone help me out with the differences between electron geometry and molecular geometry for SCl6? I think the molecular geometry is octahedral, but I'm not so sure for the electron geometry. Thanks :)
*February 7, 2011 by Kate*

**geometry**

Geometry riddl How did they like the story about towel manufacturing? Also, where can I find geometry worksheets on plane and simple? ? ? ?
*September 26, 2006 by Debra*

**physics (geometry bit)**

h t t p : / / i m g 4 3 . i m a g e s h a c k . u s / i m g 4 3 / 4 7 4 1 / 9 4 7 4 7 1 1 6 . j p g ok the two read angles are equal to each other because they are complementary if i remeber correctly the only thing we can conclude is that when we add the two angles togther we...
*August 10, 2009 by physics (geometry bit)*

**math**

In order to fit 3 pictures across a page, the yearbook staff must reduce their portrait proofs using a scale factor of 8 to 5. Find the dimensions of the picture as they will appear in the yearbook.
*January 8, 2014 by Irene*

**Literature**

How does "A Rose for Emily" demonstrate that the act of going to war ensured the demise of Southern Aristocracy? I noticed that she didn't have to pay taxes at first because the colonel knew she couldn't pay them. Are there other proofs?
*December 3, 2007 by Tammy*

**vector proofs math 536**

if the diagonals of quadrilateral ABCD intersect at their midpoints, then the quadrilateral is a parallelogram. Prove that AM MC --- = --- MB MD Ive tried figuring out this question for a while now and I cant figure it out.
*October 19, 2010 by dave*

**Proofs HELP**

this has the same layout of my last question but the given is an angle not a line. Given:angle 2 and 3 are supplementary and angle 6and 10 are congruent. prove:m//n
*November 21, 2007 by katie*

**Proofs and numbers**

Compute empty(24). For each element of Z(intergers)=24 decide whether the element is a unit or a zero divisor. If the element is a unit, give its order and find its inverse.
*November 28, 2012 by yin*

**social sudies**

A passionate, nonintellectual commitment Truth is subjective. Developed three proofs of God not to sure who their philosophers are but here are mine first one is it a leap of faith? Second one Willaim James and third Mary Daly
*February 4, 2008 by teri*

**math- Triangle facts**

Explaining the isosceles theorem. Explain why the SAS Inequality theorem is also called the Hinge theorem. the steps for Indirect Proofs and using an indirect proof with an algebraic problem.
*February 14, 2008 by Rachel*

**Proofs and numbers**

Prove the following theorem: Suppose p is a prime number, r, s are positive integers and x is an arbitrary integer. Then we have x^r identical to x^s (mod p) whenever r is identical to s (mod 11).for x belongs to an integer
*November 28, 2012 by yin*

**Geometry **

For each property listed from plane Euclidean geometry, write a corresponding statement for non-Euclidean spherical geometry. A line segment is the shortest path between two points Hey guys I want to know how to do this and can you help me with this question?
*May 29, 2011 by Anonymous*

**maths proofs**

Take the numbers 4 and 7. If we square them we get 16 and 49, which added together becomes 65. If we add 4 and 7 together first and then square we get 121. The difference is 56. PROVE that there is a connection between the product of 4 and 7 and 56 FOR ANY PAIR OF NUMBERS YOU ...
*September 27, 2010 by daz*

**Philosophy**

Construct natural deduction proofs for each of the following. 118.2 p&(q&r).'. q 118.4 .'. ¬(p&(q&¬p)) 118.10 q .'. ¬(¬p&¬q) 122.3* p " q, ¬p " r .'.¬q " r 122.7* p " q, ¬(p " r) .'. ¬(q " r) 122.10 p " q, ¬q .'. ¬p
*October 22, 2010 by Maggie*

**Complex Number Proof**

Prove: If Z and W are complex numbers, then the conjugate of (Z+W) is equal to the conjugate of Z plus the conjugate of W. My thought is that this is kind of like the distributive property, but I'm not sure. It doesn't help that I haven't written a proof in over 10 years. Help...
*June 11, 2008 by Amy*

**Trigonometry - Proofs**

Prove that the average of the numbers n sin (n degrees) (n = 2, 4, 6, ... 180) is cot (1 degree) Hint: Express everything in terms of sin and cos. Can you rearrange the result into a form that allows you to use some of the identities you've learned? How to start? I know I have...
*November 12, 2013 by Sam*

**Quick math help**

I'm on the topic of "Algebra proofs". Is this statement an example of a transitive property?: If CD=AB and AB=8 then CD=8 Here's another problem I want you to check& note that I only have 4 blanks per side of the table (statements and reasons) Given: 2(x+3)=3x+1 Prove: 5=x ...
*October 15, 2014 by Anonymous *

**English**

All of the following plural nouns except a.flies b.themselves. c. ladys. d.proofs I am think d All of the following compound nouns are correct except a.editors in chief. b.sons-in-law. c.bird watchers. d.mother-in-laws. I am think b or d
*November 19, 2014 by Anonymous*

**Discrete Mathematics**

I am having trouble using modus ponens and all the rules of inherence. By any chance do you guys have a link that can explain these concepts in more detail. I've tried multiple books and links...and haven't found a good website that shows this types of proofs in good ...
*September 13, 2007 by manny*

**Geometry**

PLEASE! Someone help me with geometry!? A wooden board is placed so that it leans against a loading dock to provide a ramp. The board is supported by a metal beam perpendicular to the ramp and placed on a 1 ft. tall support. The bottom of the support is 9 feet from the point ...
*September 22, 2010 by Anna*

**Math: Intro to Proofs**

Given: Let f: X -> Y be a function. Then we have an associated function f^(-1): P(Y) -> P(X), where f^(-1) (B)⊂X is the inverse image of B⊂Y. Question: Show that f^(-1) is one-to-one if and only if f is onto. [Notes: ⊂ represents subspace, I just couldn...
*November 3, 2011 by Nic*

**Geometry Letter Grammar??**

Hello I'm in Geometry Honors (I'm a freshman btw) and I'm failing with a D. I talked to my counselor about switching me out and going to regular and she says it's okay BUT she needs a letter from my mother saying it's okay to switch me out. I was wondering if you can write the...
*October 5, 2013 by unknown*

**Chemistry**

Are both the electron domain geometry and molecular geometry of HCN linear?
*December 7, 2009 by Trish*

**geometry**

Math - Plane Geometry. BC is a diameter of circle O, and radius OE is parallel to chord CD. Help?
*May 23, 2011 by Brianna*

**geometry**

how can you tell in geometry that the equations are parallel, perpendicular , neither, either?
*September 25, 2010 by 14*

**Geometry**

Anyone have the Amsco's geometry textbook and can help me out with some homework?
*November 28, 2011 by Anita*

**Geometry**

I Need help doing a geometry proof. In the figure below, PQ=RS. Prove PR=QS. ____________________ P Q R S
*February 5, 2012 by Jennifer*

**geometry**

Prove that the statement, “Rectangles do not exist,” is true in hyperbolic geometry.
*February 20, 2013 by denise*

**Geometry**

I need help unscrambling these geometry vocabulary words senligtacirpalse pitprceenostel nyenagliltuiqitrea gemhetrohnie
*January 31, 2010 by Daisy*

**geometry**

in elliptic geometry prove that the length of the summit of a saccheri quadrilteral is less than the base
*May 4, 2011 by al*

**Please help on geometry - analytic geometry**

What is the area, in square units, of a triangle whose vertices are at (4,-1), (10,3) and (4,5) ? How to do this?
*February 22, 2013 by Knights*

**geometry**

prove that The sum of the angles in any triangle is 180 degrees is true in Euclidian geometry.
*February 26, 2013 by denise*

**Chemistry**

What is the Lewis structure formula, electron pair geometry and the molecular geometry for SO4^2-
*August 7, 2013 by rose*

**Geometry **

Is anyone in connections academy? I need help with lesson 5 unit 4 geometry quiz polygons and angles Thank you
*May 1, 2014 by Brenda*

**chem**

what kind of e-pair geometry, molecular geometry, and bond angles does C4H10 exhibit? I'm confused.
*May 5, 2008 by natash*

**Geometry**

In geometry, a common standard setting for enlarging on a copy machine is 121 percent. What does this mean?
*November 25, 2013 by Martha*

**geometry**

what geometry figure begins and ends in the same point
*January 28, 2009 by john smith*

**geometry**

In geometry, can a counterexample be used to determine if a conjecture is false or not?
*January 15, 2010 by erin*

**Geometry**

In Euclidean geometry, the sum of the measures of the interior anglesof a pentagon is 540o. Predict how the sum of the measures of the interior angles of a pentagon would be different in spherical geometry.
*June 22, 2012 by Dillon*

**CHEMISTRYYYY**

Electron DOMAIN GEOMETRY & the MOLECULAR GEOMETRY of the following compounds: 1) ICl3 2) PCl3 3) XeF4 4) SF6 5) TeCl4
*March 30, 2012 by BMW*

**Geometry**

Help with Geometry please! Do you have any specific questions?
*October 16, 2006 by Margie*

**geometry**

Why don't parallel lines exist in elliptical geometry?
*July 13, 2010 by BOB*

**geometry**

prove that rectangles do not exist in hyperbolic geometry
*March 13, 2013 by denise*

**Trigonometry**

Does anyone have a good website that shows the proofs for these equations? sin(u+v) = sin(u)cos(v) + sin(v)cos(u) cos(u+v) = cos(u)cos(v) + sin(v)sin(u) Thanks!
*December 16, 2008 by Karth*

**CHEMMMMM**

Find the Electron DOMAIN GEOMETRY & the MOLECULAR GEOMETRY of the following compounds: 1) ICl3 2) PCl3 3) XeF4 4) SF6 5) TeCl4
*March 30, 2012 by BMW*

**geometry**

to all the people that helped me with my recent geometry questions thankyou my grade I received was 45 out of 50 points best I've ever done in my class.
*January 13, 2011 by crystal*

**PLEASE HELP**

whats a complimentery line? Thank you for using the Jiskha Homework Help Forum. If you are studying Geometry: http://astronomyonline.org/Science/Geometry.asp
*August 15, 2007 by Sarahbeth*

**Algebra**

In an interview of 50 math majors, 12 liked calculus and geometry 18 liked calculus but not algebra 4 liked calculus, algebra and geometry 25 liked calculus 15 liked geometry 10 liked algebra but neither calculus nor geometry 2 liked geometry and algebra but not calculus. Of ...
*January 11, 2010 by Anita*

**Math**

Simplify: 4^(-1/2) 4-1/2 = 1/41/2 = 1/2. check my work. On exponents, negative means reciprocal. 4(-1/2) means the same as 1/4(1/2) which is the same as 1/squareroot(4) so the answer is 1^4 no, of course not. The square root of 4 is 2 isn't it? so 1/squareroot(4) = 1/2. oh lol...
*December 2, 2006 by Alex*

**Geometry**

Ok i don't understand this question on my Geometry test. It says: On days that it rains, I carry an Umbrella 1. Rewrite the above statement as a conditional Can someone help me here?
*November 14, 2007 by Christina (:*

**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
*April 4, 2013 by denise*