Sunday

June 26, 2016
Number of results: 20,409

**vector calculus**

find an equation for the plane that contains the line x = 2t-8, y=3t +3, z= 5- t, and the point (5,4,0)
*April 26, 2010 by Omar*

**Calculus**

Write a scalar equation of each plane, given its parametric equations. x = 3 - 2s + 2t y = 1 + 3s + t z = 5 - s - 2t
*June 5, 2010 by Abigail *

**Calculus III**

P=(2,1,0) Q=(1,5,2) R=(-1,13,6) Are P, Q, and R collinear? If not, find a vector normal to the plane containing them.
*September 2, 2010 by Calvin*

**Traveling(saving money)**

how much are plane tickets to: india england
*February 23, 2011 by Charlie*

**geometry**

Why do only three types of regular polygons tesellate the plane and what are they?
*June 1, 2011 by Missy*

**geometry**

The points A(3;1), B(1;-2) and C(2;3) in a cartesian plane are given. If CD is parallel to AD with D(t/3;t+1) determine the value of t
*July 20, 2011 by steffi*

**Physics(light)**

why the ray reflected by the prism is brighter than that by the plane mirror?
*November 15, 2011 by demolitrate*

**calculus **

find the are of the surface of the part of the sphere (x^2)+(y^2)+(z^2)=4 that lies above the plane z=4
*December 5, 2011 by saud*

**Spanish crossword**

Opposite of getting off plane. Starts with R and is 14 letters.
*February 4, 2012 by Andrew*

**math**

The plane is at least 500 miles closer to chicago than to denver
*February 10, 2012 by jack*

**Calculus**

Which value of k will make the plane r=(k,3k,12) +s(2,2,3)+t(-1,1,3), s,teR passing through the origin? a) 2 b) 1 c)0 d) -1
*April 9, 2012 by Jenny*

**Calculus Grade 12 **

determine the coordinates of two points on the plane with equation 5x + 4y - 3z = 6
*June 15, 2012 by Henry*

**Honors Geometry**

Topic: Distance in Coordinate Plane Determine the value(s) of n if... J(n, n+2), K(3n, n-1), JK=5
*September 6, 2012 by Tracey*

**Algebra Grade 7**

Why can a line and a plane be named in more ways than one?
*October 26, 2012 by rawr... im a dinosaur.... rawr *

**math**

How many equilateral triangles in the plane have two vertices in the set {(0,0), (0,1),(1,0),(1,1)}?
*January 12, 2013 by meep*

**math**

What is the combined speed if a plane traveling at 500 km/hr has a tail wind of 50 km/hr?
*February 14, 2013 by gia*

**plane geometry**

if an obtuse triangle has an area of 28 sq.in. how do you find the base and height?
*May 19, 2013 by harmin*

**Vectors **

L1: [x,y,z] = [1,-2,4,] + s[1,1-3] L2: [x,y,z] = [4,-2,k] + t[2,3,1] Determine a value of k that is 10 units away from the plane with the equation 10x-7y+Z-28=0
*December 17, 2013 by Anonymous*

**Math**

A line in coordinate plane contains the points P(2, -7) and Q(-4, -1). What point is the midpoint of PQ?
*February 27, 2014 by Abby*

**Math**

A line in coordinate plane contains the points P(2, -7) and Q(-4, -1). What point is the midpoint of PQ?
*February 27, 2014 by Abigail*

**Math**

Find the locus of points that satisfy (a) |z+1| = |z+i| (b) Re z = |z-1| and sketch them in the complex plane.
*September 22, 2014 by Bill*

**Physics **

Calculate the acceleration of a plane when it changes its speed from 0m/s to 250m/s in 12 seconds
*February 16, 2015 by Jinish*

**Vectors**

Does the point of intersection between L1:(4,9,2)+s(1,-1,-1), seR and Ls: (2,11,4)+t(5,-3,-4), teR lie on the plane 3x-2y+3z+4=0?
*March 14, 2015 by Sara*

**Physics**

What is the magnitude of the vertical component of velocity of the plane? Answer in units Km/h
*October 12, 2015 by Luma*

**derek kobe maths**

the diagram shows abc,a'b'c' and a"b"c" on a coordinate plane
*October 25, 2015 by Dimpho *

**Math **

Find the equation of the line of intersection of the two plane given by x+y+z=5 and 4x+y+2z=15
*October 28, 2015 by Yong *

**Algebra 1**

What is the graph of the inequality in the coordinate plane ?? x ≥ 3 please help. I'm lost.
*January 4, 2016 by Sierra Elizabeth*

**math**

Can the figure below tessellate a plane? Explain your answer. 20.gif
*April 7, 2016 by really*

**business**

Assume that at the beginning of 2000 Speedy Delivery a Fed Ex competitor purchased a 737 aircraft at a cost of 60,000,000 Speedy Delivery expects the plane to remain useful for 5 years (5 million miles) and to have a residual value of 5,000,000 Speedy Delivery expects to fly ...
*January 5, 2010 by Ronnie*

**geometry**

Triangle NQP is an equilateral triangle with the measure of angle N=5x-2y and the measure of angle P=x+2y. Find the values of x and y.
*November 7, 2008 by Hannah*

**geometry**

IF AB=10 UNITS AB= 8 UNITS AC= 12 UNITS ED= 4.5 UNITS IF ANGLE AED= 100 DEGREES WHAT IS THE MEASURE OF ANGLE DEC
*November 18, 2010 by joana*

**geometry**

A pole makes an 85 degree angle with the ground what is the measure of the angle the pole makes with the vertical?
*April 20, 2011 by Bianca*

**geometry**

M right angle R= 120 degrees and M right angle S = 100 degrees find mrightangleT
*November 24, 2011 by Ryan*

**geometry 1**

a secant-secant angle intercepts arcs that are 3/5 and 3/8 respectively. Find the measure of the secant-secant angle.
*April 10, 2012 by Kate Jenson*

**Precalculus**

If Sin A=3/5 and cos B= -12/13, find the value of sin(A-B) if Angle A is in Quadrant I and angle B is in Quadrant III.
*June 25, 2012 by Sammy*

**Chemistry**

If the freezing point of pure toluene is -95.15 oC and its freezing point depression constant is -8.38 oC/molal, what is the freezing point of a solution made by dissolving 39.338g of anthracene (C14H10) in 150.0mL of toluene? (Density of toluene = 0.8669g/mL)
*January 30, 2013 by Jaden*

**History**

PLEASE HELP, I need to get this done in 2 hours 1. What was the effect of World War I on South Carolina? A. The state economy shrunk significantly. B. Citizens used more resources, such as meat and fuel, than before the war. C. Factory production slowed and trade decreased ...
*April 1, 2015 by Sterling*

**Physics **

A crate sets on wooden horizontal surface (a wooden floor). The figure shows a top view of this looking down onto the crate (gravity would be acting into the page). Man one and man two apply forces F1 and F2, at angles of θ1 and θ2 respectively, with the goal of ...
*October 9, 2014 by Johnny *

**Physics - forces acting at an angle**

The physics of tobogganing and forces at an angle: A child is tobogganing down a hillside. The child and the toboggan together have a mass of 50.0kg. The slope is at an angle of 30.0 degrees to the horizontal. Assume that the positive y-direction is pointing in the direction ...
*January 5, 2013 by Leo*

**math**

m of angle 7=2x + 10 m of angle 3=3x - 15
*September 16, 2010 by Nick*

**Math**

angle 2 =(4x + 4) angle 1 - 2x what is x
*September 16, 2012 by Dawson*

**physics**

A 15kg box is resting on a hill forming an angle of a horizontal surface. The coefficient of static friction for the box on the surface is 0.45. Calculate the maximum angle of the incline just before the box starts to move.
*October 22, 2010 by Samantha*

**hydrodynamics**

a kite weighs 2.50 lb and has an area of 8 square-ft. The tension in the kite is 6.6 lb when the string makes an angle of 45degrees with the horizontal. For a wind of 20 mph, assume an angle of 8 degrees with the horizontal. Consider the kite essentially flat plate
*November 25, 2011 by jolly*

**physics**

a boat can sail at 27 m.s in still water. the boat must cross a river that flows at 9 m.s towards the east . if the boat crosses the river by going up stream at an angle of 23 south, what will the size and angle of the resulting velocity be?
*February 9, 2012 by Zane*

**math**

A man walks directly from point A towards the foot of a tall building 240m away. After covering 180m, he observes that the angle of the top of the building is 45. Determine the angle of elevation of the top of the building from A.
*February 4, 2015 by king *

**math**

A uniform ladder of mass, m, and length, l, leans at an angle, theta, against a rough wall and is on a rough floor. Determine a formula for the minimum angle at which the ladder will not slip if a man reach the top of the ladder.
*June 23, 2015 by vidya*

**math**

A uniform ladder of mass, m, and length, l, leans at an angle, theta, against a rough wall and is on a rough floor. Determine a formula for the minimum angle at which the ladder will not slip if a man reach the top of the ladder.
*June 24, 2015 by vidya*

**math**

A uniform ladder of mass, m, and length, l, leans at an angle, theta, against a rough wall and is on a rough floor. Determine a formula for the minimum angle at which the ladder will not slip if a man reach the top of the ladder.
*June 24, 2015 by vidya*

**Math**

Match each ratio in the first row with an equivalent ratio from the second row if angle A plus angle B = 90 degrees. SinA CosA TanA CscA SecA CotA SinB CosB TanB CscB SecB CotB Pleaseeee help!!
*February 24, 2012 by krista*

**Trigonometry**

Mountain officials want to build a new ski lift from B to C as shown in the figure below. The distance from A to C is 1480 feet. They measure angle DAC to be 32 degrees and angle DBC to be 18 degrees. What is the distance A from to B? Round your answer to the nearest tenth of ...
*March 18, 2014 by Joey*

**Brain excel**

R and S are two observation posts on the same horizontal ground as the foot P of a vertical tower PQ.The tower is 18m due north of S and 24m east of R.The angle of elevation of Q from S is 35degree.calculate the height pQ,the distance RS,the angle of elevation of Q from S and ...
*November 11, 2015 by Zenny*

**Physic**

You pull a 30.5 kg wooden box with a rope that makes a 23.0° angle with the horizontal at a constant speed. The coefficient of kinetic friction between the box and the deck is 0.330. You pull the crate a distance of 5.25 m. How much work was done? Do you use f=ma and how does ...
*January 3, 2016 by H*

**mathematics**

Cand D are two observation posts on the same horizontal ground at the foot A of a vertical tower AB.the tower is 18m due north of D and 24m east of C.the angle of elevation of B from D is 35¡ã.calculate to three s.f the height AB,distance CD,angle of elevation from C,bearing ...
*June 4, 2016 by jenny*

**PHYSICS**

A block with mass m1 = 9.0 kg is on an incline with an angle θ = 32.0° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: μk = 0.28 and μs = 0.308. To keep the mass ...
*February 2, 2013 by HIBA*

**Geometry**

Given: Segment CE bisects <BCD; <A is congruent to <B Prove: Segment CE ll to segment AB -I used the exterior angle theorem to set the four angles equal to each other, but i don't know how to move on from there. The converse of something (maybe alternate interior ...
*November 8, 2012 by Kara*

**Physics -- URGENT**

Estimate the force a person must exert on a string attached to a 0.200 kg ball to make the ball revolve in a circle when the length of the string is 0.600 m. The ball makes 1.40 revolutions per second. Do not ignore the weight of the ball. In particular, find the magnitude of ...
*January 8, 2014 by Robert*

**Trig**

I don't know the physics behind Snell's Law, but I can do the math Snell's Law says sin(angle of incidence)/sin(angle of reflection) = refractive index since you know the two angles... sin45/sin27 = refractive index =1.5575365 so for an angle of refection of 25º sin(incidence ...
*April 19, 2007 by Reiny*

**physics**

A projectile is fired with velocity v at angle thita. Find the time when velocity of projectile will make angle 90' with initial direction of velocity?
*July 25, 2011 by Shivam*

**physics**

A projectile is fired with velocity v at angle thita. Find the time when velocity of projectile will make angle 90' with initial direction of velocity?
*July 25, 2011 by Shivam*

**Math (Please help immediately)**

Last one I need help on: The measure of one angle is 38 degrees less than the measure of its supplement. Find the measure of each angle.
*September 6, 2012 by C*

**Math (Please help immediately)**

Last one I need help on: The measure of one angle is 38 degrees less than the measure of its supplement. Find the measure of each angle.
*September 6, 2012 by C*

**Chemistry**

5.00kg glycol, C2H4(OH)2, [this is anti-freeze!] is added to your radiator. If your radiator contains 12.0kg of water, what would be the freezing point of the water-antifreeze mixture? The molal freezing point depression constant for water is 1.86 degrees celsius x kg/mole.
*March 20, 2011 by Cassie*

**Trig**

From a point 120 feet from the base of a plant building the angle of elevation to the roof line of the building is 38 degrees. The angle of elevation to the top of an antenna is 43 degrees. The antenna is attached to the nearest edge of the roof and the ground is flat. The ...
*October 24, 2012 by Dan*

**physics**

One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching the first one, a second snowball is thrown at a low angle timed to arrive before or at the same time as the first one. Assume both snowballs are thrown ...
*September 30, 2012 by tingting*

**engineering science**

a boat can sail at 27 m.s in still water. the boat must cross a river that flows at 9 m.s towards the east . if the boat crosses the river by going up stream at an angle of 23 south, what will the size and angle of the resulting velocity be?
*February 9, 2012 by Zane*

**MATH116**

Two forces of magnitudes 60 Newtons and 80 Newtons make an angle of 30 with each other and are applied to an object at the same point. Find the following: 1. the magnitude of the resultant force, and 2. to the nearest degree the angle it makes with the force of 60 Newtons.
*February 10, 2013 by Tricia*

**physics**

An airplane flies at airspeed (relative to the air) of 400km/h. The pilot wishes to fly due North (relative to the ground) but there is a 110km/h wind blowing Southwest (direction 225º clockwise from North). In what direction should the pilot head the plane (measured clockwise...
*September 16, 2006 by puff puff*

**Physics-check**

can you check my answers? 2.is more work required to bring a fully loaded truck up to a given speed, than the same truck lightly loaded? defend your answer? -more work is required to bring a fully loaded truck up to a given speed because it is doing more work since it is fully...
*October 17, 2007 by Elisabeth*

**Trig**

a. What is the length of the hypotenuse of triangle ABC? b. What is the length of the shorter leg of triangle ABC? c. What is the length of the longer leg of triangle ABC? angle A=60, angle B=30, angle C=90 the triangle has a height of 10
*February 3, 2012 by BreAnne*

**Physics**

A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.63 V and a current of 2.7 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same ...
*May 14, 2012 by M*

**The Ohio State University**

A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.74 V and a current of 3.8 A are induced in the coil. The wire is then re-formed into a single-turn square coil, which is used in the same ...
*May 14, 2012 by Ryan*

**Calculus**

An observer is 36m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 26m horizontally from the observer. The angle of elevation of the elevator is the angle of the observer's line of sight makes with the horizontal (it may be ...
*March 10, 2015 by Zee*

**ONE world history question?**

1. All of the following events following WWI contribute to the beginning of WWII EXCEPT: Harsh peace terms angered Germany. Economic prosperity and increase in the European standard of living. The Great Depression allowed dictators to take control of European countries.*** if ...
*March 30, 2016 by Anonymous*

**Math**

Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the ...
*March 8, 2015 by Joe*

**Math**

Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the ...
*March 10, 2015 by CONNEXUS ACADEMY*

**Math**

1) Matt traveled the first leg of his trip for 1350 miles on a large jet. He then traveled an additional 600 miles on a private plane to reach his destination. If the speed of the jet was three times the speed of the plane and the total time in the air was 6 hours determine ...
*May 17, 2012 by Sara*

**us history**

1. How did racism impact African American lives during the Great Depression and their access to New Deal programs? 2. How were African Americans able to create cultural power and how this impacted stereotypes and assumptions about the black community? 3. Who were some of the ...
*September 26, 2014 by Lavanessa Young *

**Math**

The supplement of an angle measures 11 times its complement. Then the measure of the angle is... A. 9 degrees B. 81 degrees C. 90 degrees D. 99 degrees E. 100 degrees
*August 3, 2015 by Michelle *

**Math**

The given angle is in standard position. Determine the quadrant in which the angle lies. -25° A. Quadrant III B. Quadrant II C. Quadrant IV D. Quadrant I
*January 19, 2016 by Maddie*

**physics**

a roller coaster car moves 200 ft horizontally and then rises 135 ft at an angle of 30 degrees above the horizontal. It then travels 135 ft at an angle of 40 degrees downward. what is its displacement from its starting point? im not really sure what to do, I've drawn a graph ...
*September 2, 2008 by laura*

**physics**

school question? A long jumper travels 8.95 meters during a jump. He moves at 10.8 m/s when starts his leap. At what angle from the horizontal must he have been moving when he started his jump? You may need the double-angle formula: 2 sin u cos u = sin (2u)
*December 15, 2010 by kevin giordano*

**maths**

from a certain spot, the top of a triangle had an angle of elevation of 40 degree. move 15meter in a straight line towards the flag pole.Now to the top has an angle of elevation of 60degree.Find the height of the flagpole and it's distance from the second point.
*May 26, 2016 by basit*

**physics**

Consider the 692 N weight held by two cables shown below. The left-hand cable had tension T and makes an angle of θ with the wall. The right-hand cable had tension 760 N and makes an angle of 40◦ with the ceiling. a) What is the tension T in the left-hand cable ...
*September 19, 2010 by Cole*

**psychology 220**

1.72 (1 pts.) Which of the following types of disorders would not meet the criteria for insanity according to the Insanity Defense Reform Act of 1984? A) schizophrenia B) major depression C) bipolar disorder D) antisocial personality disorder (my answer is "D antisocial ...
*December 9, 2012 by G. KAY*

**inverse trig function**

How do I do this by sketching a triangle. sin( arcsin(1/2) + arccos(1/2) ) Thanks. let's start with arcsin(1/2) draw a right angled triangle where theta and alpha are the two angles other than the 90º angle. suppose you make the opposite side 1, and the hypotenuse 2. Now look ...
*April 9, 2007 by Jen*

**Physics**

The 636 N weight held by two cables. The left-hand cable had tension 840 N and makes an angle of θ with the wall. The right-hand cable had tension 890 N and makes an angle of θ1 with the ceiling. a) What is the angle θ1 which the right-hand cable makes with ...
*January 9, 2011 by Mike*

**Physics**

The 636 N weight held by two cables. The left-hand cable had tension 840 N and makes an angle of θ with the wall. The right-hand cable had tension 890 N and makes an angle of θ1 with the ceiling. a) What is the angle θ1 which the right-hand cable makes with ...
*January 9, 2011 by Mike*

**Geometry**

I have four questions: 1. The area of trapezoid ABCD is 60. One base is 4 units longer than the other, and the height of the trapezoid is 5. Find the length of the median of the trapezoid. 2. In trapezoid ABCD, line BC is parallel to line AD, angle ABD = 105 degrees, angle A...
*December 6, 2014 by jared*

**trig**

A coil of wire rotating in a magnetic field induces a coltage E=20sin((PIa/4) - (PI/2)). Use an identity to express this in terms of cos(PIa/4). Types of Identities: Double Angle, Half Angle, Sum and Difference of Sine, Cosine, and Tangent, Pythagorean, Reciprocal, Quotient. ...
*April 27, 2011 by Blake*

**Physics**

All answers should be in degrees. (a) Using the result of Lecture 31 Question 3, and Snell's law, derive and evaluate for the secondary rainbow for the following values of the incidence angle and index of refraction . 1 , 1.4 incorrect 45 , 1.3 incorrect 87 , 1.55 incorrect (...
*June 5, 2013 by P*

**pre-algebra **

Use the figure to answer the following questions. figure for questions 1–3 1. Name a pair of complementary angles. (1 point) angle sign1 and angle sign4 angle sign1 and angle sign2 angle sign3 and angle sign4 angle sign1 and angle sign6 2. If mangle sign1 = 37°, what is the ...
*February 26, 2016 by cupcakesss *

**geometry**

draw a triangle abc with abc ab =4.5 ,angle abc=35,angle acb=65
*November 26, 2012 by mudit*

**Math**

The measure of an angle is 4 times the measure of its complement. What is the measure of the angle's supplement?
*April 9, 2014 by Anonymous*

**Math**

The measure of one angle is 7 times the measure of its complement. What is the measure of each angle?
*June 12, 2016 by Shaun*

**geometry**

A loading dock ramp that is 14 feet long rises at an angle of 14.1° from the horizontal. Due to new design specifications, a longer ramp is to be used, so that the angle is reduced to 9.2°. How much farther out from the dock will that put the foot of the ramp?
*April 27, 2015 by houlh*

**science/math**

1. A light ray strikes a mirror at an angle of 42° from the surface of the mirror. What angle does the reflected ray make with the normal Ans. 42° 2. A ray of light hits a mirror at 27° from the normal. What is the angle between the reflected ray and the normal. Ans. 27°
*April 7, 2014 by need help*

**Calc.**

Determine the value of k so that the line with parametric equations x = 2 + 3t, y = -2 + 5t, z = k is parallel to the plane with equation 4x + 3y – 3z -12 = 0
*July 7, 2008 by Derek*

**english**

a special plane stood waiting for the president find the italicized word
*January 5, 2009 by yeshua*

**Math**

Which 3 x 3 matrix represents a reflection in the yz plane followed by inversion through the origin?
*February 24, 2009 by Alice*

**repost Calculus**

the length of the curve of intersection of the cylinder (4x^2) + y^2 = 4 and the plane x + y + z = 2 I'm so lost. Any help is appreciated!
*April 24, 2009 by Anonymous*