Thursday

April 17, 2014

April 17, 2014

Number of results: 214,955

**Math - intersection of planes**

You are given the following two planes: x+4y-3z-12=0 x+6y-2z-22=0 a) Determine if the planes are parallel b) Fine the line of intersection of the two
*Monday, September 6, 2010 at 1:11pm by Shaila*

**Math - Intersection of planes**

Find the vector equation of the line of intersection for the pair of planes. Plane one: x+5y-3z-8=0 Plane two: y+2z-4=0 I did half of the work but now i am stuck. the normal of the planes are not parallel and therefore a solution exists, you simultaneously solve the equations...
*Wednesday, September 1, 2010 at 3:08am by Shaila*

**Math - intersection of planes**

You are given the following two planes: x+4y-3z-12=0 x+6y-2z-22=0 a) Determine if the planes are parallel b) Fine the line of intersection of the two planes. c) Use the two original equations to determine two other equations that have the same solution as the original two. d) ...
*Saturday, September 4, 2010 at 5:14pm by Shaila*

**Calc.**

Determine the interaction of the line of intersection of the planes x + y - z = 1 and 3x + y + z = 3 with the line of intersection of the planes 2x - y + 2z = 4 and 2x + 2y + z = 1.
*Thursday, July 10, 2008 at 1:16pm by Derek*

**Math: Intersections of 3 Planes**

Find the intersection of the first two lines: subtract the first from the second 11y - 4z = 0 11y = 4z y/z = 4/11 let y=4 and z=11 (it satisfies the above ratio) back in the first x - 8 - 11 = 0 x = 19 since clearly (0,0,0) lies on all three planes, the line joining (0,0,0) ...
*Thursday, March 27, 2008 at 9:41pm by Reiny*

**Linear Algebra 2**

This is another question I can't figure out. Given planes pie1 and pie2 defined as: pie1: 2x + 5y - 7x + 2 = 0 pie2: x + y - z + 3 = 0 (b) Give the equation of the line of intersection of these two planes. I only found the answer for (a) where they ask to find the angle ...
*Sunday, September 9, 2012 at 10:31pm by Robert*

**Math**

Determine whether the following statements are always,sometime, or never true.Explain 1.Three points determine a plane. 2.The intersection of two planes can be a point. 1.Never true, the three points must be noncollinear. 2.Never true, the intersection of two planes is a line...
*Wednesday, October 6, 2010 at 10:42pm by Shadow*

**Calculus**

Consider the planes given by the equations 2y−2x−z=2 x−2y+3z=7 (a) Find a vector v parallel to the line of intersection of the planes. (b)Find the equation of a plane through the origin which is perpendicular to the line of intersection of these two planes. ...
*Monday, October 1, 2012 at 7:16pm by Felicia*

**Algebra 2...**

On isometric dot paper, graph the system of equations at right. What shape is their intersection? Use color to show the intersection clearly on your graph. 10x + 6y + 5z = 30 6x + 15y + 5z = 30 Is the intersection where the two planes OVERLAP?
*Saturday, March 9, 2013 at 7:44pm by Anonymous*

**Calculus**

adding #1 and #2 I got 2x + 5z = 6 adding #1 and #3 I got 4x + 10z = 13 You should realize that we cannot solve this any further, since both x and z would drop out so lets find the line of intersection of plane #1 and #2 from 2x + 5z = 6 let z=2, then x = -2 and from #2, y = 0...
*Wednesday, July 9, 2008 at 5:32pm by Reiny*

**Calculus**

Use normal vectors to determine the intersection, if any, for each of the following groups of three planes. Give a geometric interpretation in each case and the number of solutions for the corresponding linear system of equations. If the planes intersect in a line, determine a...
*Wednesday, July 9, 2008 at 5:32pm by Nicole*

**Calc**

When you are solving for the point of intersection between planes do you follow the same steps when solve for the point of intersection between lines?
*Sunday, October 17, 2010 at 10:26pm by C*

**Geometry (math)**

Identify 2 planes in a triangular prism that intersect.Name their intersection
*Monday, November 18, 2013 at 11:12pm by Naila dar*

**Geometry (math)**

Identify 2 planes in a triangular prism that intersect.Name their intersection
*Monday, November 18, 2013 at 11:46pm by Naila dar*

**Math - Intersection of planes**

You are almost there. If you look at the system of equations of the planes Plane one: x+5y-3z-8=0 Plane two: y+2z-4=0 when converted to the reduced echelon form, you get x + 0y -13z = -12 0x + y + 2z = 4 Take z as the free variable, (i.e. t) and solve for x and y in terms of t...
*Wednesday, September 1, 2010 at 3:08am by MathMate*

**Math: Intersections of 3 Planes**

let l be th line x+1/2=y+3/3=-z and let P be the plane 3x-2y+4z=-1. find the piont of intersection po of l and p
*Thursday, March 27, 2008 at 9:41pm by ILU*

**Math: Intersections of 3 Planes**

let l be th line x+1/2=y+3/3=-z and let P be the plane 3x-2y+4z=-1. find the piont of intersection po of l and p
*Thursday, March 27, 2008 at 9:41pm by ILU*

**Geometry**

The intersection of two planes
*Saturday, September 29, 2007 at 1:19pm by Anonymous*

**Calc**

Two commercial airplanes are flying at an altitude of 40,000 ft along straight-line courses that intersect at right angles. Plane A is approaching the intersection point at a speed of 427 knots (nautical miles per hour; a nautical mile is 2000 yd or 6000 ft.) Plane B is ...
*Tuesday, October 1, 2013 at 11:21am by Anonymous*

**Calc**

Two commercial airplanes are flying at an altitude of 40,000 ft along straight-line courses that intersect at right angles. Plane A is approaching the intersection point at a speed of 427 knots (nautical miles per hour; a nautical mile is 2000 yd or 6000 ft.) Plane B is ...
*Tuesday, October 1, 2013 at 11:27am by Anonymous*

**geometryy**

the intersection of two distinct planes can be a _ or a _?
*Monday, September 13, 2010 at 7:08pm by cassie*

**geomtry**

when two planes intersect, their intersection is a:
*Monday, September 19, 2011 at 1:44pm by jay*

**gemetry**

The intersection of two planes is a line.
*Sunday, November 27, 2011 at 4:46pm by bobpursley*

**Calc.**

Use normal vectors to determine the intersection, if any, for each of the following groups of three planes. Give a geometric interpretation in each case and the number of solutions for the corresponding linear system of equations. If the planes intersect in a line, determine a...
*Wednesday, July 9, 2008 at 8:07pm by Derek*

**Calc.**

Use normal vectors to determine the intersection, if any, for each of the following groups of three planes. Give a geometric interpretation in each case and the number of solutions for the corresponding linear system of equations. If the planes intersect in a line, determine a...
*Wednesday, July 9, 2008 at 5:30pm by Derek*

**calculus**

Two commercial airplanes are flying at an altitude of 40,000 ft along straight-line courses that intersect at right angles. Plane A is approaching the intersection point at a speed of 429 knots (nautical miles per hour; a nautical mile is 2000 yd or 6000 ft.) Plane B is ...
*Thursday, September 27, 2012 at 7:00pm by Avi*

**English**

I don't like the way I re-did #2 above!! 2) Using robotic planes is more efficient than using manned planes. Robotic planes are also faster than manned planes because robots can be airborne in 15 minutes. Robotic planes = drones
*Monday, April 18, 2011 at 2:12pm by Writeacher*

**Math**

Find parametric equations and symmetric equations for the line of intersection of the given planes. x + y + z = 2, x + z = 0 X=1 y = Z= x=, y=
*Tuesday, April 13, 2010 at 1:58am by Mike*

**Calculus**

Start with sketching the solid/cross section. Cylinders are easier to sketch. Draw the trace (projection on the x-y plane. The shape stays the same for the full height. The trace has the two parabolas meet at (-1,0) and (1,0). Draw the two planes. Start with x+y+z=2 x=-1,y=0...
*Thursday, February 16, 2012 at 5:16pm by MathMate*

**9th grade**

what does it mean to name the intersection of the planes in a triangular prism
*Tuesday, August 31, 2010 at 8:41pm by bob*

**math**

set operations A^c = (A complement) B^c = (B complement) A^c intersection B^c intersection C no parenthesis :// do i get the intersection of all three or get the intersection of A^c and B^c first?
*Sunday, June 26, 2011 at 12:16pm by rose*

**Math**

Three planes: x+y-2z=1 2x+z=y-4 -3x-y+z=-2 They intersect at: (a) (-2/5,5,9/5) (b) no common intersection (c) r=(5/3,-2/3,0)+&(1,5,3) (d) r=(0,-4,-5)+%(1,5,3) &/%=signs like alpha and beta, used in vector eqns Please help! I just can't get the answer to be/ressemble any of them!
*Thursday, March 11, 2010 at 1:23pm by Anonymous*

**Math - intersection of planes**

a. If the planes are parallel, one equation would be a linear combination of the other, which is not the case. b. as in the previous problem, http://www.jiskha.com/display.cgi?id=1283324887 reduce the equations to the reduced echelon form, namely 1 0 -5 = -8 0 2 1 = 10 Set z=t...
*Monday, September 6, 2010 at 1:11pm by MathMate*

**Math**

Perry draws two planes, K and L, as shown. Which statement is true? Plane K and plane L contain four lines because a theorem states that a line extends on both sides of a plane. Plane K and plane L intersect along a line because a postulate states that if two planes intersect...
*Tuesday, October 2, 2012 at 8:36pm by Lisa*

**Math - Intersection of planes**

You are given the following two planes: x+4y-3z-12=0 x+6y-2z-22=0 a) Use the two original equations to determine two other equations that have the same solution as the original two. ANS: the orginal two are not parallel in anyway so can I just take multiples of the original ...
*Wednesday, September 15, 2010 at 2:28pm by Shaila*

**Math - Intersection of planes**

You are given the following two planes: x+4y-3z-12=0 x+6y-2z-22=0 a) Use the two original equations to determine two other equations that have the same solution as the original two. ANS: the original two are not parallel in anyway so can I just take multiples of the original ...
*Monday, September 20, 2010 at 5:11pm by Shaila*

**Math**

Determine if it is always sometimes never or always true - ray LJ and ray TJ are opposite rays -the intersection of two planes is a point
*Monday, September 12, 2011 at 5:28pm by Casey*

**math linear alegba**

Find the distance from the point (1, 1, 1) to the line given as the intersection of planes x+2y− 2z = 5 and 6x − 3y + 2z = 8.
*Monday, March 4, 2013 at 1:59am by liam*

**Vectors**

3 planes; $: x+2y-2z-6=0 %: 2x-y+z+8=0 £: 2x-y+2z+3=0 (a)(i)Find the cartesian equation for the plane @ parallel to $ and containing the point (1,1,2) (ii)Calculate the distance between $ and @ (b)(i)Find the parametric equations for the line of intersection of the planes $ ...
*Sunday, April 25, 2010 at 11:22am by Anonymous*

**vectors**

3 planes; $: x+2y-2z-6=0 %: 2x-y+z+8=0 £: 2x-y+2z+3=0 (a)(i)Find the cartesian equation for the plane @ parallel to $ and containing the point (1,1,2) (ii)Calculate the distance between $ and @ (b)(i)Find the parametric equations for the line of intersection of the planes $ ...
*Sunday, April 25, 2010 at 4:41pm by Anonymous*

**Calculus Grade 12**

Find the equation of the plane that passes through the point (3,7,-1) and is perpendicular to the line of intersection of the planes x-y-2z+3=0 and 3x-2y+z+5=0
*Monday, June 10, 2013 at 3:32pm by Amber*

**Math**

no solutions because 2x-y+3z=8 and -6x+3y-9z=24 reduce to 2x-y+3x = 8 2x-y+3z = -8 which are parallel planes with no intersection
*Monday, August 27, 2012 at 11:07pm by Steve*

**calculus and vectors**

Determine an equation of the line of intersection of the planes 4x − 3y − z = 1 and 2x + 4y + z = 5.
*Tuesday, April 1, 2014 at 4:59pm by anon*

**9th grade**

i think it means to name the corners. planes could also be interpreted as the faces of the triangular prism, to their intersection could be the corners,,
*Tuesday, August 31, 2010 at 8:41pm by jai*

**geometry**

Can lines and planes intersect with each other? Yes. Consider a line perpendicular to your screen on your display you are looking at....the intersection is a point in the plane on the line.
*Saturday, August 19, 2006 at 7:12pm by Nobody*

**Calculus**

Find the vector equation of the line that passes through the point (2,-1,7) and is parallel to the line of intersection of the planes x + 2y - 3z = -6 and 3x - y + 2z = 4
*Sunday, May 6, 2012 at 12:05pm by J*

**Calculus**

Find the vector equation of the line that passes through the point (2,-1,7) and is parallel to the line of intersection of the planes x + 2y - 3z = -6 and 3x - y + 2z = 4
*Monday, May 7, 2012 at 8:28pm by J*

**math**

2 kinds of models, boats and planes. You don't know how many models he has of each so it would be: 2x He has 8 more than of the others 2x + 8 22 total 2x + 8 = 22 2x = 14 (subtract 8) x = 7 (boats) Since he has 8 more planes x + 8 = planes (7) + 8 = 15 15 planes; 7 boats
*Thursday, October 18, 2012 at 4:40pm by Joey*

**Math: Scalar Equations of a Plane**

Find the scalar equation of each of the following planes. State which of the planes, if any, are coincident. a) r = (-8,-1,8) + s(-5,1,4) + t(3,2,-4) Scalar Equation: -12x - 8y - 13z = 0 ---- b) r = (-2,-2,5) + s(3,1,-1) + t(4,1,-4) Scalar Equation: -3x + 8y - z + 15 = 0...
*Thursday, March 27, 2008 at 11:12pm by Anonymous*

**Business Cal.**

Suppose the marginal revenue (in dollars) from the sale of x jet planes is R'(x)=2x(x^2+50)^2 A. Find the total revenue function if the revenue from 3 planes is $206,379. B. How many planes must be sold for revenue of at least $450,000?
*Monday, December 4, 2006 at 11:06pm by David*

**math**

Use Venn digagrams Intersect two circles, label one C the other T let the intersection be x then the part of C outside the intersection is 5-x the part of T outside the intersection is 8-x 5-x + x + 8-x = 12 x = 1
*Tuesday, February 16, 2010 at 2:57pm by Reiny*

**MATH**

7/10 I drew a Venn diagram A is 6 of 10 including intersection A intersection B is 3/10 That leaves 4 of 10 for B alone so total B is 4 plus the intersection 3
*Saturday, December 15, 2012 at 4:51pm by Damon*

**Math- intersection of planes**

Show that the line [x,y,z]=[10,5,16]+t[3,1,5] is contained in the plane x+2y-z-4=0 I tries writing the vector equation in parametric form and then substituting it into the respective x,y,z in the plane, after simplifying I get 0t=0 does this mean that the line is in the plane ...
*Wednesday, September 1, 2010 at 3:13am by Shaila*

**Math- intersection of planes**

Yes, that means that the line is in the given plane. You can also take any two distinct points on the given line (i.e. two arbitrary values of t) and prove that each of the point lies in the plane.
*Wednesday, September 1, 2010 at 3:13am by MathMate*

**Vectors**

The intersection of two planes is a straight line, unless the two planes are parallel Ok so far ---> -3y + 9z + 3 = 0 divide by -3 y - 3z = 1 y = 1 + 3z now we pick an arbitrary value for z let z=0, then y = 1, back in first equation 2x -2 + 0 = -10 x = -4 so a point on our...
*Tuesday, May 25, 2010 at 6:24pm by Reiny*

**maths - geometry**

In a space with an orthonormal coordinate system consider the plane; &: 4x-3y=12 (a)(i)Find the coordinates of the points of intersection of the plane & with the coordinates axes (=axes intersections???) (ii)Find the parametric equations for the line of intersection of the ...
*Wednesday, April 28, 2010 at 10:21am by Anonymous*

**Calculus**

Yes, you've got it right. In (a), you see clearly that the equations are different, so they represent different planes. In addition, the coefficients of x, y and z are identical, therefore they are parallel, since the orthogonal vector of both planes are (5,-2,4). For (b), ...
*Saturday, May 5, 2012 at 12:21am by MathMate*

**Geometry**

Determine if it is always sometimes never or always true - ray LJ and ray TJ are opposite rays -the intersection of two planes is a point
*Monday, September 12, 2011 at 4:54pm by Casey*

**Math-Linear Systems**

Determine the point of intersection. (a) y = 4x + 6 y = -x + 1 (b) 2x + 5y = 10 x = 10 Please show how to get the point of intersection. thoroughly explain how to get point of intersection.
*Sunday, June 14, 2009 at 12:50pm by Sideshow*

**Math(Calculus)**

Ok I have a bunch of questions, please bare with me and i'd appreciate it VERY much if you could help me with these! 1. Assume that you are given the equations of three planes. Without solving the system, describe a "test" with rationale, that you could use to determine ...
*Wednesday, August 11, 2010 at 11:49pm by rick*

**Calculus**

Find an equation of the plane. The plane that passes through the point (−1, 2, 1)and contains the line of intersection of the planes x + y − z = 4 and 4x − y + 5z = 4
*Friday, January 31, 2014 at 3:04pm by john*

**Math**

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the intersection and the truck ...
*Sunday, July 31, 2011 at 7:32am by eve*

**Math**

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the intersection and the truck ...
*Sunday, July 31, 2011 at 7:32am by eve*

**Geometry**

Planes A and B are both perpendicular to line M. What is the relationship between planes A and B?
*Monday, April 12, 2010 at 8:35pm by ross*

**Math**

Find the intersection. {2,5,7,10} and {3,6,9}. I think that the intersection is a empty set. Is this correct? Thanks.
*Wednesday, April 7, 2010 at 2:29pm by B.B.*

**math**

I assume 2) is intersection If the intersection of A and B = A, then A is a subset of B. A-B is the members of A that are not in B. If that is equal to A, then B is empty.
*Thursday, March 29, 2012 at 5:30am by Steve*

**Geometry 10th grade**

Which of the following represents the intersection of two planes? A) a line B) a point C) a point or a line D) two points
*Monday, June 7, 2010 at 9:38pm by darian thomas*

**math**

"Solve each system graphically" You'll need to graph each equation and look for the intersection. If there is no intersection, the system has no solution. If the two lines coincide, the system has infinite solutions. If the two lines intersection at one point, there is a ...
*Wednesday, August 1, 2012 at 7:01pm by MathMate*

**math**

Two planes depart from the same airport at the same time. One hour later one of the planes is 480 miles due north of the airport and the other plane is 550 miles due east of the airport. At that time, what is the distance between the two planes?
*Tuesday, March 1, 2011 at 12:27pm by Lo*

**calculas**

caluclas (intersection of three planes) HELP!!!? in the equations k is a real number 1.x-2y+z=4 2.x-y-z=3 3.x+y+kz=1 for what values of k does the system 1.have exactly one solution? 2.have an in finite number of solution?
*Sunday, March 27, 2011 at 5:02pm by ram*

**2nd grade**

Air transportation: planes, including jets and smaller planes helicopters gliders
*Wednesday, February 25, 2009 at 3:00pm by Ms. Sue*

**Calculus**

Find the parametric equations for the line of intersection of the planes x+y+z=3 and x-y+2z=2 I took the cross product of the 2 equations and got 3i-j-2k I then set z=0 and got x=5/2 and y=1/2. I got: x=5/2 +3t y=1/2-t z=-2t However, the answers are supposed to be: x=5/2-(3/2)...
*Tuesday, December 4, 2012 at 11:46am by Mackenzie*

**math**

there are 1170 students and all need to go on a trip. they will be flying on 138 seat planes. hm planes are neded to transport all the students.
*Monday, September 26, 2011 at 10:51am by john*

**Math**

Mr. Garcia pays $834 for some model cars and model planes. Each model car cost $52. and each model plane cost $14. less than each model car. Mr. Garcia buys 3 more planes than cars. How many model planes does he buy?
*Thursday, March 27, 2014 at 10:20pm by carol*

**Calculus Grade 12**

The line of intersection of the planes is in the direction of the cross-product of the two normals: {1,-1,-2}x{3,-2,1} = {-5,-7,1} Now we have a point and a normal vector. The equation of the plane is thus -5(x-3) - 7(y-7) + 1(z-1) = 0 -5x + 15 - 7y + 49 + z - 1 = 0 5x+7y-z = 63
*Monday, June 10, 2013 at 3:32pm by Steve*

**Calculus**

Find the parametric equations for the line of intersection of the planes x+y+z=3 and x-y+2z=2 I took the cross product of the 2 equations and got 3i-j-2k I then set z=0 and got x=5/2 and y=1/2. I got: x=5/2 +3t y=1/2-t z=-2t However, the answers are supposed to be: x=5/2-(3/2)...
*Tuesday, December 4, 2012 at 5:40pm by Mackenzie*

**Analytic Geometry**

Given two planes, discuss the methods used to determine if the planes are parallel, perpendicular, coincident, or none of these.
*Thursday, May 10, 2012 at 5:14pm by kelsey*

**Venn Diagrams :(**

If your A does not include the intersection of A and B, then n(A)=number of items belonging to A A part + intersection of A & B n(B)=B part + intersection of A & B Total of A & B (assumed = universe) n(U)=A part + B part + intersection P(A)=probability of picking an item from ...
*Wednesday, July 27, 2011 at 12:34pm by MathMate*

**Pre Calc**

A plane (A) heading south at 120 mph and a plane (B) heading west at 600 mph are rlying tword the same point at the same altitude. Plane A is 100 miles from the point where the flight patterns intersect and plane B is 550 miles from there. A) Find the parametric equation that ...
*Tuesday, May 7, 2013 at 7:05am by Rebekah*

**Calculus**

We need the direction of their line of intersection.... double the 2nd plane equation, then add that to the 1st x+2y-3z = -6 6x - 2y + 4z = 8 7x + z = 2 z = 2-7x let x=1 then z = -5 back in the 1st 1 + 2y + 15 = -6 y = -11 -----------> point (1,-11,-5) let x = 0 then z = 2 ...
*Monday, May 7, 2012 at 8:28pm by Reiny*

**English**

All sound good except maybe for #s 5 and 7. The phrase "pass the intersection" is vague -- unclear what to do at that intersection. In #7, you might say, "Just go straight. You'll reach an intersection; keep going straight ... " And don't forget to correct the spelling at the ...
*Monday, October 27, 2008 at 6:49am by Writeacher*

**Math**

Two small planes start from the same point and fly in the opposite directions. The first plane is flying 35 mph slower than the second plane. In 2 hrs, the planes are 530 mi apart. Find the rate of the slow plane.
*Wednesday, February 3, 2010 at 4:03pm by Matthew*

**Vectors**

Thank You Reiny, that's exactly what I got. But I was told the number isn't a nice one, I believe that it's correct. Also, I have another question to ask. Find the intersection of the 2 planes (2x-2y+5z+10=0) and (2x+y-4z+7=0). So far, I eliminated x by subtracting the two ...
*Tuesday, May 25, 2010 at 6:24pm by Darren*

**Social Studies**

how many war planes created in 1943 http://www.acepilots.com/planes/main.html This site should give you the information you need.
*Monday, May 7, 2007 at 6:46pm by debbie*

**math grade 11**

First find the intersection point of these lines and then also take one point from the line y = 2x 3 and calculate the distance from the intersection point to this point on the line. So this distance is equal to the distance fron the intersection point to the point (x,y) on ...
*Saturday, April 28, 2012 at 3:28am by DawitGebeyaw*

**math**

Chester builds and collects models of boats and planes. He has 22 models all together chester has 8 more planes than he has boats. How many of each kind of model does he have?
*Monday, October 15, 2012 at 5:21pm by lesley*

**math**

chester builds and collects models of boats and planes. He has 22 models altogether. Chester has 8 more planes than he does boats. How many of each kind of model does he have?
*Thursday, October 18, 2012 at 4:40pm by Anonymous*

**calculus**

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the intersection and the truck ...
*Sunday, July 31, 2011 at 7:29am by eve*

**Math**

When graphing two linear equations, what is the significance of the intersection of the two graphs, and if there is no intersection?
*Thursday, March 18, 2010 at 11:10pm by Mark*

**Math**

Two small planes start from the same point and fly in the same direction. The first plane is flying 35 mph slower than the second plane. In 2 hrs, the planes are 530 mi apart. Find the rate of the slow plane.
*Thursday, February 4, 2010 at 11:52am by Mathew*

**Grade 12 Calculus University**

Find a normal to the first plane, and a normal to the second plane. If the two normals are scalar multiples of each other, then the planes are parallel. or try to find their intersection, if you can find a solution, then they are obviously not parallel
*Thursday, June 21, 2012 at 4:10pm by Reiny*

**math**

A. Describe the different types of symmetry and axes of symmetry of a regular octahedron. B. How many planes and axes of symmetry does a regualr octahedron have? For B I know that it has 5 planes but I do not know the rest can anyone shed some light?
*Friday, January 29, 2010 at 8:49pm by Rmz*

**FREE BODY DIAGRAM calculus**

A car is traveling north towards an intersection at 60mph at the same time a truck is headed east toward the same intersection at 45mph. Find the rate of change of the distance between the car and truck when the car is 3 miles south of the intersection and the truck is 4 miles...
*Sunday, October 7, 2012 at 11:57pm by erica*

**Mathematics - Equations of Lines in 3D**

a) It does have intercepts with x=0, y=0 and z=0 planes. In each case, a t-value exists. b) A line parallel to [x,y,z] = [4,1,-2] +t[3,1,-5] would have to be of the form [x,y,z] = [a,b,c] +t[3,1,-5] It could not be parallel to x=0, y=0 or z=0 planes because, regardless of a,b ...
*Friday, August 20, 2010 at 12:42am by drwls*

**math**

it deals with the number of points that a certain number of lines drawn have. BTW, I think you have your headings backwards, the first set of numbers should be lines, the second set of numbers are the number of intersection points those lines have e.g. 1 line has no ...
*Monday, February 2, 2009 at 9:50pm by Reiny*

**MATH**

http://www.solving-math-problems.com/math-symbols-set-intersection.html It means intersection which elements are in both sets? (overlap) 5 no 10 yes 15 no 20 yes 25 no 30 no so { 10,20}
*Wednesday, May 25, 2011 at 8:14pm by Damon*

**Math**

Find the point of intersection between y=2-(1/2)x and y=1+ax. (a=alpha sign). You answer will be a point in the xy plane whose coordinates involve the unknown a . I got that which is x=2/(2a+1), y=(1+2a)/(2a+1) <-intersection point I need help is to: Find a (a=alpha sign) ...
*Friday, October 9, 2009 at 12:05am by SC*

**Geometry Honors (p.2)**

Two planes that lie in parallel planes are ________. Answers: Always, Never, or Sometimes I'm having some trouble on this one... I think it's sometimes...?
*Thursday, August 30, 2012 at 8:29pm by IB student*

**MATH**

If you draw two intersecting circles, E and P, then the intersection is for students in both E and P. E = .3S The intersection of P&E = .4E = .6P But, that means that .12S = .6P, so P = .2S Add up E & P to get .5S = 50%
*Thursday, October 6, 2011 at 8:22pm by Steve*

**Anonymous**

Give the exact intersection point for the equations f(x)=4sin^2x+7sinx+6 and g(x)=2cos^2x-4sinx+11 Ok, my result is that there is no intersection point because if you put f(x)=g(x) and try to solve for x or the intersection point, the LS f(x) is not possible, so there is none...
*Friday, May 8, 2009 at 2:54pm by trig*

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