Tuesday

August 30, 2016
Number of results: 20,641

**math **

One interior angle of a triangle has a measure that is equal to the sum of the measures of the other two angles of the triangle. What is the measure of the smallest exterior angle of the triangle in degrees?
*March 11, 2015 by G*

**Chemistry**

What is the freezing point (°C) of a solution prepared by dissolving 11.3 g of Ca(NO3)2 in 115 g of water? The molal freezing point depression constant for water is 1.86°C/m. (Note that when Ca(NO3)2 dissolves in water Ca2+ and NO32- ions are produced).
*May 25, 2012 by Henry*

**Geography**

In an effort to help Japan recover from the devastating effects of the 1929 depression, Japanese military leaders in the 1930s...? A. adopted a policy of imperialist expansion. B. formed an alliance with the Soviet Union. C. negotiated more trade treaties with the Soviet Union...
*April 12, 2010 by Greiye*

**History/9th grade**

I am trying to understand and I hope you can help me. I just want some more explaintion about the great depression. Why do people call it a leveler? I heard some kids over at the table next to me at lunch today. Like I said I just want to know. I am studing about presidents ...
*May 4, 2010 by Nanci*

**Physics**

A pendulum oscillates at a frequency of 2 cycles per second. At t = 0 it is released starting at an angle of 20°C. Ignoring friction what will be the position (angle) of the pendulum at a. t = 0.25 sec b. t = 1.6 sec c. t = 5.0 sec
*February 16, 2011 by Cole*

**plss answer fast math algebra**

the ratio of the measure of the complementsof two angle is3:4while the ratio of the measure of their supplements is 9:10 find the measure of each angle.
*October 11, 2013 by rhodora*

**physics**

Forces of F1=975 N,F2= 745 N, f3= 1175 N and are applied at the same point. The angle between f1 and f2 is 60.0 degree and the angle between f2 and f3 is 30.0 degree. F2 is between f1 and f3 find the resultant force.
*November 24, 2013 by carol*

**math**

the number of noncollinear points needed to determine a circle Two. The location of the center, and one point on the circle (ie, the length of radius), you have determined the circle. However, the circle thus determined can be an an infinite number of planes (not just in the ...
*October 15, 2006 by sarah*

**physics**

A plane flying horizontally above Earth’s surface at 184 meters per second drops a crate. The crate strikes the ground 30.0 seconds later. What is the magnitude of the horizontal component of the crate’s velocity just before it strikes the ground? [Neglect friction.] [1 ...
*November 4, 2011 by Jules*

**math**

In triangle ABC, angle C is congruent to angle A, line BC=2x-5, line AB=x+5 and line AC=x+10. Find x. The problem didn't have a triangle drawn so i drew it myself. I tried many equations but when i substitute it it didn't work.
*November 16, 2008 by mark*

**physics**

calculate the refractive index for a ray travelling from air to water given that the angle of incidence is 30degrees and the angle of refraction in the water is 22 degrees.Determine the speed of the ray in water.
*November 10, 2011 by ceasar*

**Geometry/Trig.**

For acute angle Aof a right triangle, find tan A by using the 45-45-90 Triangle Theorem or the 30-60-90 Triangle Theorem. measure of angle A=45 degrees.
*January 30, 2011 by Chica*

**math / science**

find the vector with all of the following properties: magnitude 10 angle of 45 degrees with positive x-axis angle of 75 with positive y-axis positive k component
*December 11, 2011 by Clarissa *

**Physics**

Mathematically determine the resultant force if two forces A and B act on an object. Force A is 85N and is at an angle of 20• to the horizontal. Force B is 125N and is at an angle of 60• to the horizontal.
*October 11, 2012 by Christian*

**math**

A stirring blade is attached at the level of the center of the wheel. Find the distance from the center of the wheel to the stirrer blade for 30° and 225° angles of rotation. The radius is 2ft and the rod of the blade attached to the blade is 5ft long. Describe the distance of...
*February 11, 2016 by Anonymous*

**Physics**

A 1.1 kg particle-like object moves in a plane with velocity components Vx = 30 m/s and Vy = 90 m/s as it passes through the point with (x, y) coordinates of (3.0, -4.0) m. (a) What is its angular momentum relative to the origin at this moment? _____ kg*m^2/s k (b) What is its...
*March 30, 2007 by COFFEE*

**math 116**

Two angles are complimentary.The sum of the measure of the first angle and one fourth the second angle is 58.5 degrees. Find the measurements of the angles...the smaller one is ? and the larger one is?
*November 15, 2009 by TracyAnn*

**Math Trig**

I have to find the x (bottom length of the triangle) in a right triangle. angle A is 33.9 degrees angle B is 90 degrees and the height of the triangle is 3.3cm What formula do I use to figure out this question?
*January 7, 2013 by nj*

**physics**

A uniform string fixed at one end passes over a pulley and then is attached to a hanging object. The string is horizontal between the fixed end and the pulley. When you let the hanging object oscillate in the vertical plane, the fundamental frequency of the horizontal part of ...
*August 6, 2008 by Elisa*

**ap physics**

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 16, 2007 by Elisabeth*

**Social Studies (Check, Please!)**

1. Why did Hoover oppose the federal government's participation in relief programs? A: Hoover opposed the federal government's participation in relief programs because he believed that only state and city governments should dispense relief. 2. How did Americans react as the ...
*December 15, 2015 by Victoria*

**Geometry**

To build a fence, Jim positioned the fence posts and then placed a 2 x 4 board at an angle between the fence posts. As he placed each picket, he measured the angle that the picket made with the 2 x 4. Why does this ensure that the picket will be parallel? - This ensure that ...
*November 15, 2010 by Shadow*

**kinematics**

A man stands on a slope of 20 degrees.His weight is 65kg. Given that the coefficient of static friction is 1.5, Calculate the maximum angle that the slope can have to the horizontal before he begins to slide. Also how does the pressure on his feet change with the changing ...
*March 8, 2012 by dmkp*

**physics**

for a free throw in basketball,find an equation for the final angle to go into the hoop in terms of y and x to the hoop and the initial angle. I can't seem to get an equation with only those variables. I always get stuck with others like time and velocity. how do i do this?
*February 3, 2008 by Mischa*

**alg 2**

evaluate cot 11 pie/6 to the nearest hundred angle given in radians.. is there a way to put this in calculator. another ? use a calculator and inverse function to find radian measures of the given angle angles whose tangent is 4.21 is that 1.34 the answer?
*June 9, 2008 by jerson*

**10th grade Geometry**

How do you do this proof? "In circle O, line segment ABC and line segment ADE are secants. Prove that angle ADC is congruent to angle ABE. This is the diagram: img523.imageshack.us/my.php?image=diagram3.jpg
*February 23, 2009 by Tommy*

**PHYSICS**

A FIREWORKS ROCKET IS MOVING WITH A SPEED OF 45.0 M/S. THE ROCKET SUDDENLY BREAKS INTO TWO PIECES OF EQUAL MASS, WHICH FLY OFF WITH VELOCITIES V1 AND V2. WHAT IS THE MAGNITUDE OF V1? (THE ANGLE OF V1 WITH RESPECT TO THE ORIGINAL V DIRECTION IS 30 DEGREES WHILE THE ANGLE OF V2 ...
*October 16, 2009 by LIZ*

**physics**

The two angled ropes used to support the crate in the figure below an withstand a maximum tension of 1300 N before they break. The left angle is 30dregres, and the right angle is 45degrees. What is the largest mass the ropes can support? m=?
*September 20, 2010 by andrea*

**physics**

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 sue*

**physics**

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)
*June 24, 2011 by aimee*

**physics**

A narrow ray of yellow light from glowing sodium (λ 0 = 589 nm) traveling in air strikes a smooth surface of water at an angle θi = 16.5◦ . Find the angle of refraction, θr. Answer in units of ◦
*April 18, 2013 by Anonymous*

**Maths**

An aircraft which is maintaining a constant altitude of 1000 metre is travelling directly away from an observer. At a particular instant the angle of elevation is 52 degree and 12 seconds later the angle of elevation is 16 degree. Find the distance travelled in this time.
*April 29, 2013 by Shane*

**precalc**

When an airplane leaves the runway, its angle of elevation is 18 and its speed is 275 feet per second. Find the airplane’s altitude after one minute (60 seconds). Assume a constant angle of elevation. Draw the scenario, if you can.
*May 5, 2016 by victoria*

**Physics**

A high-voltage line of length 175 m is carrying a current of 105 A at a point on the earth where its magnetic field is 5 * 10^(-5) T and points North,34 degree from the vertical axis. A) what is the magnitude and direction of the force on the wire if the current is flowing ...
*March 6, 2008 by jenish*

**physics**

A high-voltage line of length 175 m is carrying a current of 105 A at a point on the earth where its magnetic field is 5 * 10^(-5) T and points North,34 degree from the vertical axis. A) what is the magnitude and direction of the force on the wire if the current is flowing ...
*March 8, 2008 by raks*

**Socials**

How did work camps and tariffs effect the Great Depression? What were the strength and weaknesses of these effects? workcamp- strength - men got to work weakness - ?? tariffs strength - protected Canada's profit weakness - slowed down trade
*February 1, 2009 by Sh*

**math**

an ultralight plane had been flying for 40 min when a change of wind direction doubled its ground speed. the entire trip of 160miles took 2h. how far did the plane travel during the first 40 min? Let V be the initial ground speed and 2V be the final ground speed, in miles per ...
*November 28, 2006 by suzy*

**math**

an airplane is flying at a constant altitude of 28000 meters. when first seen to the east of the observer, the angle to the airplane is 71.5 degrees. after 73 seconds, the angle of elevation is 51.6 degrees. find the speed of the airplane.
*February 19, 2008 by Kindell*

**MATH**

The exterior angle of a regular polygon is the angle formed by an extended side and the adjacent side. a)what is the measure of each interior angel of a regular pentagon. (There is apicture on the page and each side measures 21mm) Help please.
*May 17, 2009 by CAITLIN D.*

**Physics**

Solve this question, the resultant of two force acting at right angle to each other on a body is ten newton. If the angle between the resultant and one of the force is sixty degree, find the force.
*October 12, 2011 by Adeleke*

**Math**

Traveling across a flat land you notice a mountain of f in the distance with an angle of elevations 3.5 degrees. You walk toward the mountain 13 more miles and now the angle of elevation is 9 degrees. How tall is the mountain?
*June 23, 2016 by Gabby *

**geometry**

The measure of an angle of a parallelogram is 12 degrees less than 3 times the measure of an adjacent angle. find the measure of all the interior angels of the parallelogram.
*February 23, 2011 by Sarah*

**Cosmology**

A Megaparsec is: - The distance to the Andromeda galaxy - The distance from which 1 AU subtends an angle of 1 microarcsecond - The distance from which 1 AU subtends an angle of 1 arcsecond - The size of the observable universe
*January 8, 2013 by qwerty*

**Math**

the measure of an exterior angle of a trangle is 125 the measure of one of its remote interiot angles is 65 what is the measure of the other remote interior angle
*November 9, 2015 by Anonymous*

**english**

Any idea's of an epigram for a biography on the Wright Brothers? (eg. he who fly's the plane etc)
*November 10, 2007 by Samantha*

**science**

at what speed did a plane fly if it traveled 1760 meters in 8 seconds
*April 8, 2008 by jacob*

**math**

how do you find a vector perpendicular to the plane containing the given points? (0,-2,2),(1,2,-3),(4,0,-1)
*January 25, 2010 by Anonymous*

**math**

IF a plane can travel 2.00 x 10 to the power of 3 km in 3.00 hours, what is the velocity in metre/sec.?
*February 8, 2010 by arilk*

**Math 157**

How many rectangles will fit about a point when tessellating the plane? How do you know?
*April 9, 2010 by Jamie*

**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*

**Physics**

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 John*

**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*

**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*

**Math**

Angle 1 and angle 2 are supplementary angles. m∠1 = 4x+3 m∠2 = 3x−5 What is the value of x? a.) x = 178 b.) x=178/7 c.) x=92/7 d.) x = 26
*August 22, 2016 by Jay*

**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**

The measure of one angle is six more than three times the measure of another angle. If the two angles are complementary, find the measure of each. i keep trying to answer these type of questions but i always get the wrong answer?
*August 8, 2016 by Kenny*