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April 23, 2014

April 23, 2014

**Recent Homework Questions About Geometry**

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**Geometry**

Two angles are supplementary if the sum of their measures is 180∘. If the measure of one angle is 16x degrees, represent the measure of its supplement as an expression of x.
*Thursday, August 29, 2013 at 12:15am*

**Reading**

I would love to help, but that doesn't quite make sense. You are combining English and Geometry, Are you sure that's the correct question?
*Wednesday, August 28, 2013 at 5:16pm*

**geometry:linear measure and precision**

how do i find the precision of 80in. and how do i explain the meaning?
*Wednesday, August 28, 2013 at 4:39pm*

**Geometry**

Evidently, ABC+DBC = ABD So, 5x+4 + 8x-3 = 79 x=6 so plug in that to the expressions given.
*Wednesday, August 28, 2013 at 3:41pm*

**geometry**

no, 56. Each side has 14 posts; the next 15th post is the corner of the next side. Draw a figure using a smaller number to check it out. what's 14*14? Times 9?
*Wednesday, August 28, 2013 at 3:34pm*

**geometry**

postulates are assumed to be true and we need not prove them. They provide the starting point for the proof of a theorem. A theorem is a proposition that can be deduced from postulates. We make a series of logical arguments using these postulates to prove a theorem.
*Wednesday, August 28, 2013 at 3:10pm*

**Geometry**

If angle ABD is 79 what is angle ABC and DBC DBC (5x+4) ABC (8x-3)?
*Wednesday, August 28, 2013 at 1:19pm*

**geometry**

Bill plans to put a fence around a square plot of ground for a garden. a. if he wants to put 15 post on each side of the square, how many post will he need for his fence? 58 is this correct b. If he plans to space the posts evenly one yard apart on each side, how many square ...
*Wednesday, August 28, 2013 at 11:49am*

**geometry - incomplete**

Depends on where G,H,I,J,K are. triangle? pentagon? in a line?
*Wednesday, August 28, 2013 at 4:44am*

**geometry**

I'm confused ? So if GK=24 , HJ=10 , and GH=HI=IJ what's the length for HI help me ?
*Wednesday, August 28, 2013 at 1:42am*

**geometry**

what is the diffwereence between a postulate and theorom
*Tuesday, August 27, 2013 at 10:42pm*

**Geometry Honors**

two of the points lie on the line where two planes intersect. In fact, any number of planes can intersect along a single line, which may contain two or all three of the points.
*Tuesday, August 27, 2013 at 8:32pm*

**Geometry Honors**

You and your friend each draw 3 points. Your points lie in only 1 plane, but your friend's 3 points lie in more than one plane. Explain how this is possible.
*Tuesday, August 27, 2013 at 5:39pm*

**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
*Tuesday, August 27, 2013 at 3:24pm*

**geometry**

bc (or cb) is the common side
*Tuesday, August 27, 2013 at 4:19am*

**geometry**

My guess is that T id a point between S and U. So, ST+TU=SU 5x+1 + 4x-1 = 54 That's not there, so try ST = SU - TU 5x+1 = 54-(4x-1) 5x+1 = 55-4x (C)
*Tuesday, August 27, 2013 at 4:13am*

**geometry**

abc and cbd are adjacent angles which side do the angles have in common
*Tuesday, August 27, 2013 at 1:39am*

**geometry**

We can't answer the question unless we know the position of S, T, and U relative to each other. e.g. are S and U the endpoints with T between them ?
*Monday, August 26, 2013 at 8:49pm*

**geometry**

Which equation is the correct equation to solve for x? Given ST = 5x + 1 , TU = 4x -1, and SU = 54 Its multiple choice and the answers given are- A)(5x + 1) + 54 = 4x - 1 B)(4x - 1) + 54 = 5x + 1 C) 5x + 1 = 55 - 4x D) 5x + 1 = 27
*Monday, August 26, 2013 at 8:37pm*

**math/Geometry**

what is the proprty of 0 pluse 90 equls 90
*Sunday, August 25, 2013 at 7:55pm*

**geometry**

May not exist. Need more info about a,b,c
*Sunday, August 25, 2013 at 5:52am*

**geometry**

a line that contains ab and cb
*Sunday, August 25, 2013 at 12:39am*

**geometry**

draw u parallel lines and then a perpendicular one that goes through both
*Saturday, August 24, 2013 at 1:25pm*

**GEOMETRY (Angles) PLEASE**

You'd have to set up equations. First, let a=angle A, b=angle B and c=angle C, all in degrees. (Note: in solving math problems, it is important to define all symbols/variables used, including the units). We are given: "angle b is 5 more than twice angle A" which ...
*Saturday, August 24, 2013 at 6:57am*

**GEOMETRY (Angles) PLEASE**

in triangle ABC, angle b is 5 more than twice angle A and angle C iss 35 less than three times angle A. Find the angles of triangle ABC
*Saturday, August 24, 2013 at 2:09am*

**Geometry**

Are we worried whether we use compass headings where North = 0 degrees, rather than East, and angles are measured clockwise?
*Friday, August 23, 2013 at 12:43pm*

**Geometry**

THANK YOU
*Friday, August 23, 2013 at 9:02am*

**Geometry**

calculate the horizontal and vertical replacements of each trip first trip: x/5 = cos85 , x = 5cos85 y/5 = sin85 , y = 5sin85 2nd trip: x/6 = cos50 , x = 6cos50 y/6 = sin50 , y = 6sin50 total horizontal displacement = 5cos85 + 6cos50 = appr 4.2925 total vertical displacement...
*Friday, August 23, 2013 at 8:53am*

**Geometry**

A ship sails 5 km from a port A on a bearing of 85 degrees and then 6 km on a bearing of 50 degrees. Calculate the distance and bearing from A.
*Friday, August 23, 2013 at 8:19am*

**geometry**

Where is the road sign? What does Roseville have to d o with it?
*Friday, August 23, 2013 at 1:54am*

**geometry**

if a picnic area is located at the midpoint between sacramento and oakland fidn the distance to the picnic area from the road sign roseville 5 sac 23 oakland 110
*Friday, August 23, 2013 at 12:56am*

**geometry**

a line that intersectgs two nonintersecting planes
*Friday, August 23, 2013 at 12:06am*

**Geometry; Check answers?**

copy triangle CAN shown at the right. use your procrator to find the angle bisector <A. Label the point where it crosses CN point Y. use your ruler to find the midpoint of CN and label it D. are D and Y the same point?
*Thursday, August 22, 2013 at 5:55pm*

**Geometry**

i need help please!
*Thursday, August 22, 2013 at 11:15am*

**geometry**

2 1/3
*Thursday, August 22, 2013 at 1:02am*

**Geometry**

453
*Wednesday, August 21, 2013 at 5:57pm*

**Geometry**

453
*Wednesday, August 21, 2013 at 5:57pm*

**Geometry**

inches of cylindrical
*Wednesday, August 21, 2013 at 5:03pm*

**AoPS**

Are you by any chance enrolled (or were enrolled) in AoPS Intro to Geometry course? Because I recognize all of the problems you post...
*Tuesday, August 20, 2013 at 10:01pm*

**Geometry**

poop
*Tuesday, August 20, 2013 at 9:48pm*

**Geometry; Check answers?**

I did correct #1. It's (-1.5,0) but, I still don't know the length. Can you help? #2. How do I put it in correct form?
*Tuesday, August 20, 2013 at 2:44pm*

**Geometry**

parallel planes
*Tuesday, August 20, 2013 at 2:37pm*

**Geometry, Help**

No, it's (-1.5,0) !!
*Tuesday, August 20, 2013 at 2:36pm*

**Geometry; Check answers?**

Wait. How do I correct 1 and 2?
*Tuesday, August 20, 2013 at 2:28pm*

**Geometry; ck answers?**

a. Midpoint has to be in negative x retio, and y has to be zero. length to nearest tenth is not 19. b. good midpoint, but length is is the sqrt(164) check that. notice you did NOT put the length to nearest tenth, (and it is wrong anyway) c. Midpoint ok, length correct.
*Tuesday, August 20, 2013 at 2:23pm*

**Geometry; Check answers?**

For each graph, find (a)AB to the nearest tenth and (b)the coordinates of the midpoint of AB. 1. Coordinates are A(-9, -6) B(6,6) D=19.2 Midpoint=(1.5,-6) 2.A(-2,-2) B(8,-6) D=10.77 midpoint= (3,-4) 3. A(0,3) B(-2,-2) D=5.4 Midpoint= (-1,0.5)
*Tuesday, August 20, 2013 at 2:12pm*

**Geometry**

following???
*Tuesday, August 20, 2013 at 1:34pm*

**Geometry**

Which of the following best describes the front and back cover of a textbook when closed?
*Tuesday, August 20, 2013 at 1:25pm*

**Geometry, Help**

is one's midpoint answer (-1.5,-6)?
*Tuesday, August 20, 2013 at 1:20pm*

**Geometry, Help**

SORRY! I was squaring it. Thanks for your help.
*Tuesday, August 20, 2013 at 12:55pm*

**Geometry, Help**

I got 369 and divided by 2. How's you get that answer?
*Tuesday, August 20, 2013 at 12:52pm*

**Geometry, Help**

for #2 the midpoint is (3,-4) That is the average of the endpoints
*Tuesday, August 20, 2013 at 12:47pm*

**Geometry, Help**

#1 is √(225+144) = √369 = 19.2
*Tuesday, August 20, 2013 at 12:46pm*

**Geometry, Help**

Is #1 184.2?
*Tuesday, August 20, 2013 at 12:42pm*

**Geometry, Help**

would you divide 2 by 29?
*Tuesday, August 20, 2013 at 12:38pm*

**Geometry, Help**

just use the distance formula: d = √(∆x^2 + ∆y^2) for #2, that would be d = √((8-(-2))^2 + (-6-(-2))^2) = √(10^2 + (-4)^2) = √116 = 2√29
*Tuesday, August 20, 2013 at 12:31pm*

**Geometry, Help**

Help? I'm stuck. For each graph, find (a)AB to the nearest tenth and (b)the coordinates of the midpoint of AB. 1. Coordinates are A(-9, -6) B(6,6) 2.A(-2,-2) B(8,-6) 3. A(0,3) B(-2,-2)
*Tuesday, August 20, 2013 at 12:20pm*

**solid mensuration**

no solid mensuration here. Just regular plane geometry. The area of an ellipse with semi-axes a and b is πab. Note that if a=b, we have a circle of radius a, and area πa^2
*Tuesday, August 20, 2013 at 12:18am*

**Geometry, Help**

√n is a positive value So, √(a^2+b^2) is a positive value There is no "midpoint" of two points in the plane. There is, however, the midpoint of the line segment joining the two points. That will turn out to be the center of the circle which has the two ...
*Tuesday, August 20, 2013 at 12:10am*

**math - geometry**

Plot the center at (4,-7) Plot the horizontal and vertical diameter endpoints, 8 units from the center. Sketch a circular curve using those points. Much easier with a compass :-)
*Tuesday, August 20, 2013 at 12:08am*

**Geometry, Help**

1. Reasoning How does the Distance Formula ensure that the distance between two different points is positive? 2. There are two different formulas for midpoint. Is it possible to use the formula for midpoint "on a number line" when you are trying to find the midpoint...
*Monday, August 19, 2013 at 9:46pm*

**math - geometry**

Austin wants to sketch the graph of a circle represented by the given equation. (x - 4)2 + (y + 7)2 = 64 Using complete sentences, describe the steps used to sketch the circle on a coordinate grid
*Monday, August 19, 2013 at 9:39pm*

**geometry**

Suppose ABCD is a trapezoid with parallel sides AB and CD that has four points E,F,G and H tangent to the inscribed circle Γ on sides AB,BC,CD, and AD, respectively. If AE=2,BE=3, and the radius of Γ is 12, what is the length of CD?
*Monday, August 19, 2013 at 5:12pm*

**geometry**

Geometrically, I have no idea. Algebraically, if we let A = (0,0) B = (1,0) then D = (1,√3) X = (1,-1) so M = (1,(√3-1)/2) C = (3/2,√3/2) slope of MC is 1 slope of MD is √3/2 ∠CMD = 60°-45° = 15° Maybe by working with all those 60°...
*Monday, August 19, 2013 at 1:59pm*

**geometry**

ABCDEF is a regular hexagon. Square ABXY is constructed on the outside of the hexagon. Let M be the midpoint of DX. What is the measure (in degrees) of ∠CMD?
*Monday, August 19, 2013 at 11:56am*

**Math Geometry**

Starting from the point (0,0), a grasshopper makes a series of leaps on the coordinate plane. The grasshopper's first leap takes her to (3,4). After a move which adds (x,y) to the grasshopper's coordinates, her next move adds either (x,y-1) or (x-1,y) to her ...
*Sunday, August 18, 2013 at 12:54pm*

**geometry**

i dont know!!!
*Saturday, August 17, 2013 at 8:59pm*

**ap geometry**

JM=MK=JK/2 x/8 = (3x/4-6)/2 x/8 = (3X/4-24/4)/2 x/8 = 3x/8 - 24/8 x = 3x - 24 x-3x = -24 -2x = -24 x = 12 12/8 = 1.5 = JM = MK
*Saturday, August 17, 2013 at 5:19pm*

**geometry**

the altitude times the side length: Area = altitude × s A = 0.9 * 1.2 A = ________ square meters
*Friday, August 16, 2013 at 3:32pm*

**geometry**

find the area of the rhombus (0.9m and 1.2m
*Friday, August 16, 2013 at 3:12pm*

**Geometry**

Thanks Steve. I got it. Forgot to convert feet to miles when calculating.
*Friday, August 16, 2013 at 5:40am*

**Geometry**

If you draw a triangle where the hypotenuse is r+h (the elevated observation point), and the distance to the horizon is d, then r^2+d^2 = (r+h)^2
*Friday, August 16, 2013 at 4:09am*

**Geometry**

A person standing h feet above sea level can seecd miles to the horizon. The distance r is the radius of the earth = 3963 miles. d is the tangent to the circle forming a right angle to the radius. h + r is the tangent. Solve using Pythagorean theorem and secant-tangent theorem...
*Thursday, August 15, 2013 at 11:33pm*

**Geometry**

Thatsall thats on the problem
*Thursday, August 15, 2013 at 9:01pm*

**Geometry - incomplete**

For help, finish posting the problem. What are PT and TQ? Read what you have posted. It is woefully incomplete.
*Thursday, August 15, 2013 at 6:09pm*

**Geometry**

Help. PT=5x+3 and TQ=7x-9 Find the value of PT
*Thursday, August 15, 2013 at 4:34pm*

**ADVANCED AMC8 GEOMETRY QUESTION/MATH**

Let S2 be the subset containing all the multiples of 2. There are 50 of them, and they all have 2 as a divisor. So, S2 is one of our subsets. There are fewer than 50 multiples of any other number in a subset of {1 ... 100}. Looks like S2 is our only candidate.
*Thursday, August 15, 2013 at 2:34pm*

**ADVANCED AMC8 GEOMETRY QUESTION/MATH**

Let S be a subset of {1, 2, 3,... 100}, containing 50 elements. How many such sets have the property that every two numbers in S have a common divisor that is greater than 1? I really need help. Give me a good explanation with he answer. Thanks!!! :)
*Thursday, August 15, 2013 at 12:24pm*

**ADVANCED AMC8 GEOMETRY QUESTION/MATH**

In a chess variant, a "lord" can move one space at a time, either upward, or to the right, or diagonally upward and to the right. How many ways are there for a lord to move from the bottom left to top right corner of the 8 by 8 chessboard? This seems like a really ...
*Thursday, August 15, 2013 at 12:18pm*

**Geometry**

The sides have lengths RS: √((3+1)^2+(3-3)^2) = 4 ST: √((5-3)^2+(-1-3)^2) = √20 TU: √((2-5)^2+(-1+1)^2) = 3 UR: √((-2+1)^2+(-1-3)^2) = √17 so, add them up
*Wednesday, August 14, 2013 at 8:43pm*

**Geometry**

Graph it out and use the Pythagorean theorem to find 2 sides. Multiply those together.
*Wednesday, August 14, 2013 at 8:41pm*

**Geometry**

The coordinates of the vertices of a quadrilateral are R(-1,3) S(3,3) T(5,-1), and U(-2,-1).Find the perimeter of the quadrilateral. Round to the nearest tenth.
*Wednesday, August 14, 2013 at 8:38pm*

**geometry**

m<AOC=7x-2, m<DOC=2x+8, m<EOD=27 find the value of X
*Wednesday, August 14, 2013 at 7:46pm*

**Geometry MATH CHECK**

pretty good, but subtraction produces the difference between two values. The length of the line is the distance from one end to the other, or the difference between their values. we take |a-b| because the length of a line segment is always a positive value. The direction does ...
*Wednesday, August 14, 2013 at 3:51pm*

**Geometry**

well, let's see: 8y+4y+8 = 15y-9 3y = 17 y = 17/3 right off, you should have realized that a negative value for y makes no sense, since we are dealing with line segments, which have positive lengths. I'm still bothered by the fraction answer. A simple exercise like ...
*Wednesday, August 14, 2013 at 3:45pm*

**Geometry MATH CHECK**

Check? In your own words, explain why we use the formula AB = |a - b| to find the distance of a segment. Include why you need to subtract and why you need to take the absolute value. We use that formula |a-b| because a and b are representing coodinate numbers you need to ...
*Wednesday, August 14, 2013 at 1:51pm*

**Geometry**

I got y=-17 Am I right?
*Wednesday, August 14, 2013 at 1:35pm*

**Geometry**

I'm sorry rt=15 not 115
*Wednesday, August 14, 2013 at 1:31pm*

**Geometry**

How'd you get that? I was trying the problem and couldn't get it
*Wednesday, August 14, 2013 at 1:30pm*

**Geometry**

RS+ST=RT 8y+4y+8 = 115y-9 103y = -17 y = -17/103 now plug that into the expressions for the segments
*Wednesday, August 14, 2013 at 1:26pm*

**Geometry**

How would you do this? Rs=8y St=4y+8 RT=115y-9 a.Find the value of y b. Find rs, st, rt
*Wednesday, August 14, 2013 at 1:20pm*

**Geometry**

Help? 1. In your own words, explain why we use the formula AB = |a - b| to find the distance of a segment. Include why you need to subtract and why you need to take the absolute value. 2. Compare and Contrast Describe the difference between saying that two segments are ...
*Wednesday, August 14, 2013 at 1:08pm*

**help hexagon geometry**

iiitss hahaha nto telling you
*Wednesday, August 14, 2013 at 1:28am*

**help hexagon geometry**

That's not the answer hes dumb
*Wednesday, August 14, 2013 at 1:27am*

**Math- Urgent**

http://www.mathplanet.com/education/pre-algebra/introducing-geometry/angles-and-parallel-lines
*Tuesday, August 13, 2013 at 7:16pm*

**geometry**

The cubes are each 5 x 5 x 5 cm. Joined together, they form a rectangular prism of dimensions 5 x 5 x 10 cm. Calculate the area of that prism. (Two sides of the original two cubes will be hidden). YEaH ITS TRUE . and to continue with it it will results to 250 sQuare cm :D
*Tuesday, August 13, 2013 at 3:26am*

**Geometry**

Brilliant qn! hint for you : use recursion
*Sunday, August 11, 2013 at 5:42am*

**ADVANCED AMC8 GEOMETRY QUESTION/MATH**

Note that an equilateral triangle is a triangle where all lengths of the sides are equal. If you revolve the triangle about its altitude (or the height), you'll generate a cone (just try to imagine or draw the figure). Therefore, the height of the cone is equal to the ...
*Saturday, August 10, 2013 at 2:02am*

**ADVANCED AMC8 GEOMETRY QUESTION/MATH**

An equilateral triangle of side 14 centimeters is revolved about an altitude to form a cone. What is the number of cubic centimeters in the volume of the cone? Express your answer to the nearest whole number, without units. I just want the answer. Thanks! :)
*Friday, August 9, 2013 at 11:59am*

**Geometry**

Steve this makes sense to me. Thank you I knowvitbis a lot to ask, but how do you get from (r-2)^2 + (8-r)^2 = (+2)^2 to r=4(3-rt5)
*Friday, August 9, 2013 at 9:01am*

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