Friday

December 19, 2014

December 19, 2014

Number of results: 32,905

**CALCULUS**

The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s = 3sin(đt) + 5cos(đt), where t is measured in seconds. (Round all answers to the nearest hundredth.) (a) Find the average velocity during the time ...
*August 29, 2010 by Terry*

**college physics**

a 7500 kilogram rocket blasts off vertically upward from the launch pad with a constant acceleration of 2.25 m/s squared and feels no appreciable air resistance, when it reaches the height of 525 meter its engine suddenly fail so that the only force acting on it is now gravity...
*July 19, 2010 by kat*

**Physics**

A 279 N force is pulling an 75.9-kg refrigerator across a horizontal surface. The force acts at an angle of 26.3 ° above the surface. The coefficient of kinetic friction is 0.259, and the refrigerator moves a distance of 9.14 m. Find (a) the work done by the pulling force, and...
*February 27, 2012 by Candy*

**Math**

The table gives, for a particular object, the acceleration A caused by an applied force F. Acceleration (A)10 15 20 25 30 Force(F) 50 75 100 125 150 What force is required to produce an acceleration of 19? A) 19 B) 95 C) 114 D) 38
*August 5, 2010 by Sharee*

**Science!**

2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <---- 3. Which of the following describes the relationship between friction and inertia? When there is more friction, there is less inertia When there is less ...
*March 19, 2014 by Gabby*

**Physics - momentum**

Two hockey pucks approach each other as shown in the figure below. Puck 1 has an initial speed of 22 m/s, and puck 2 has an initial speed of 14 m/s. They collide and stick together. Find the components along x and y of the initial velocities of both particles. v1xi = 19.1 m/s ...
*November 16, 2010 by J Velji*

**Physics 5**

Two blocks are free to slide along the frictionless wooden track ABC shown in Figure P9.20. A block of mass m1 = 5.00 kg is released from A. Protruding from its front end is the north pole of a strong magnet, repelling the north pole of an identical magnet embedded in the back...
*October 20, 2011 by Anonymous*

**Physics**

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration of a person situated...
*March 3, 2008 by Zach*

**physics**

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the speed and centripetal acceleration of a person ...
*July 1, 2013 by brandan*

**Physics!**

Two ropes pull on a ring. One exerts a 57 N force at 30.0°, the other a 57 N force at 60.0° (a) What is the net force on the ring? Magnitude __?__N Direction __?__° (b) What are the magnitude and direction of the force that would cause the ring to be in equilibrium? __?__N __?__°
*October 25, 2012 by Anna*

**physics**

Two ropes pull on a ring. One exerts a 63 N force at 30.0°, the other a 63 N force at 60.0° (a) What is the net force on the ring? Magnitude ____ N Direction ____ ° (b) What are the magnitude and direction of the force that would cause the ring to be in equilibrium?
*February 11, 2014 by Khadija*

**Physics**

A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m. While she is in contact...
*April 8, 2014 by Jason*

**Trig**

A force of 323 newtons makes an angle of 54 degrees and 20 minutes with a second force. The resultant of the two forces makes an angle of 39 degrees forty minutes with the first force. Find the magnitude of the second force. I have the answer, 814.3022, but I need to know how ...
*October 19, 2010 by Brittany*

**algebra**

above the x axis a dot on the -2 line up to 2.5, and another dot on -3 line up to 4.5, thats on left side, then right side a dot on 2 line up 2.5, and another on line 3 up to 4.5. Not sure how to figure this is someone is willing to help. possible answers; domain: {–3, –2, 0, ...
*September 18, 2012 by lee*

**Physics**

Your 2.85kg physics book rests on a horizontal tabletop. A. Find the normal force on the book. B. Suppose you pull up on the book with a 15.0N force, now what's the normal force? C. Suppose you push down on the book 15.0N Force now what's the normal force?
*September 20, 2012 by Jessica*

**science**

Okay do I have been trying countless to figure the answer to this question. If someone would help it would be greatly appreciated! The question is: "Calculate the force of gravity between a newborn baby of mass 4 kg and the obstetrician of mass 80 kg, who is 0.1 m from the baby."
*February 18, 2014 by JMAC*

**English**

I checked the sentences myself.There were spelling mistakes to correct. I need to prepare this listening activity taken from a course book (again). I just want to be sure that everything is OK. 1) Travel and expeditions were much in the people’s mind. Perhaps the most typical ...
*November 9, 2011 by Henry2*

**physics**

Vector A has a magnitude of 8.00 units and makes an angle of 45.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods, find (a) the vector sum A + B and (b) the vector difference A – B. Could...
*August 28, 2009 by benjamin*

**math**

jason leaves detroit at 2 pm at a constant speed. he passes ann arbor, 40 mi. from detroit, at 2:50 pm. express the distance traveled in terms of time elapsed. i know d=rt. t=50 min. d=40 mi. does that mean the r= 4/5 mi/min. ? but how would u get the answer from there? I ...
*September 28, 2006 by hawkstar*

**Calc**

A line tangent to y=(x^2)+1 at x=a, a>0, intersects the x-axis at point P. a) Write an expression for the area of the triangle formed by the tangent line, the x-axis, and the line x=a. b) For what value of 'a' is the area of the triangle a minimum? Justify your answer. Show...
*February 20, 2008 by Michael*

**gen. physics II**

A charge of +3 C is at the origin. When charge Q is placed at 2 m along the positive x‑axis, the electric field at 2 m along the negative ´‑axis becomes zero. What is the value of Q? a. ‑3 C b. ‑6 C c. ‑9 C d. ‑12 C please justify your ...
*July 25, 2010 by Alinkashia*

**calculus**

The hypotenuse of a right triangle has one end at the origin and one end on the curve y = (x^4)(e^-7x), with x > 0. One of the other two sides is on the x-axis, the other side is parallel to the y-axis. Find the maximum area of such a triangle.
*November 1, 2011 by Emily*

**calculus**

The hypotenuse of a right triangle has one end at the origin and one end on the curve y = (x^4)(e^-7x), with x > 0. One of the other two sides is on the x-axis, the other side is parallel to the y-axis. Find the maximum area of such a triangle.
*November 1, 2011 by Emily*

**lens surface**

- a spherical generator is used to produce a -15.00D surface on glass of refractive index 1.80. The diameter of the cutting tool is 80mm and the radius of the cutting surface is 4 mm. What is the angle between the axis of the tool and the axis of the lens?
*October 22, 2012 by Anonymous*

**Physics**

John’s mass is 81.0 kg, and Barbara’s is 62.4 kg. He is standing on the x axis at xJ = +9.41 m, while she is standing on the x axis at xB = +4.34 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch? Distance moved ...
*November 7, 2012 by Orla*

**Math**

the figures are similar. the are of one figure is given. find the area of the other figure to the nearesr whole number. the area of the larger triangle is 1,589 ft squared
*November 20, 2011 by Anonymous*

**Math!!!**

I have a input output table and I can't figure out the rule here is the chart X. Y _______________ 1. | 3 4. | 7 7. | 11 Can u figure it out I'm having a really hard time with this problem!!!!
*January 30, 2013 by John*

**Math**

Given that force 1=60 pounds and force 2=90 pounds, find the angle between the forces if the magnitude of the resultant force is 50 pounds. Round answer to the nearest degree and show work.
*April 27, 2011 by Shelby*

**physics**

A force of 15N acts in the forward direction on a carton of 3kg. Suppose a friction force of 6N opposes the carton motion. Find the following: 1) the net force 2) the acceleration of the carton
*March 16, 2014 by Rasha *

**11 Maths B**

Design a wine glass that uses at least 5 different equations to form the outline of the shape. At least half of your equations must be curves. It is easier if the design is done with the glass on its side, that is, with the axis of the design running along the x-axis
*July 28, 2012 by Nina*

**Calculus**

A rectangle has one corner in quadrant I on the graph of y = 9 − x^2,another corner at the origin, and corners on both the positive y-axis and the positive x-axis. As the corner on y = 9 − x2 changes, a variety of rectangles are obtained. Express the area A of the ...
*September 7, 2014 by Delaney*

**physics**

A man pushes on a piano of mass 180 so that it slides at a constant velocity of 12.0 down a ramp that is inclined at 11.0 above the horizontal. No appreciable friction is acting on the piano. Calculate the magnitude and direction of this push A. if the man pushes parallel to ...
*November 8, 2010 by bob*

**Physics**

A man pushes on a piano of mass 180 kg so that it slides at a constant velocity of 12.0 cm/s down a ramp that is inclined at 11.0degrees above the horizontal. No appreciable friction is acting on the piano. Calculate the magnitude and direction of this push (a)if the man ...
*November 11, 2010 by Carmen*

**Physics**

A person pushes a 11.0 kg lawn mower at constant speed with a force of 76.0 N directed along the handle, which is at an angle of č = 41.0° to the horizontal. Calculate the normal force exerted vertically upward on the mower by the ground. Calculate the force the person must ...
*November 28, 2011 by Leah*

**algebra**

Direct and Joint Variation 2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft. Find l when V = 210 ft and w = 5 ft.
*January 26, 2009 by bob*

**math**

Direct and Joint Variation 2. The volume V of a rectangular prism of a particular height varies jointly as the length l and the width w, and V = 224 ft when l = 8 ft and w = 4 ft. Find l when V = 210 ft and w = 5 ft.
*January 26, 2009 by bob*

**Biology!!**

The lifespan of plants varies depending on genetics and survival strategies. Discuss the adaptive value of annual, biennial, and perennial life spans.
*January 26, 2011 by NEEDS HELP!!*

**algebra**

Express the statement as a formula that involves the variables w, z, u and a constant of proportionality k, and then determine the value of k from the condition : w varies directly as z and inversely as the square root of u, if z = 3 and u = 4, then w = 18
*March 30, 2014 by DOREEN*

**Physics**

Two charged smoke particles exert a force of 4.2x10^-2 N on each other. What will be the force if they are moved so they are only one eighth as far apart? F= 4.2x10^-2 N K= 8.99x10^9 e= 1.6x10^-19 Do I solve for r even though they're asking me to find the force?
*May 14, 2010 by Ali*

**Physics **

Two ropes are attached to a wagon, one horizontal to the west with a tension force of 30 N, and the other east and at an angle of 30° northward and a tension force of 40 N. Find the components of the net force on the cart. Show all your work.
*December 10, 2011 by Jay *

**physics**

A student has just started pulling hard enough for a crate to start accelerating into motion. At that particular instant, what is the net force on the crate if the force of friction has magnitude 200 N and the applied force is 225 N?
*October 8, 2012 by Rebecca*

**physics**

A pushes with force of 300 N at 25 degrees. B pushes with force of 275 N at 160 degrees. C pushes with force of 325 N at 300 degrees. Find resultant force. I got 187 N at -19 degrees or 161 degrees. Correct? or could you explain more please? Thank you.
*November 7, 2010 by Anonymous*

**physics**

A 126 kg block is released at a 6.8 m height as shown. The track is frictionless. The block travels down the track, hits a spring of force constant k = 1999 N/m. The acceleration of gravity is 9.8 m/s 2 .moreno (lm35839) – Homework 16A – smith – (14122) 3 6.8 m x 126 kg 1999 N...
*January 17, 2013 by Anonymous*

**PhysicsIn what direction relative to north must ca**

Two canoeists start paddling at the same time and head toward a small island in a lake, as shown in the figure . Canoeist 1 paddles with a speed of 1.60 at an angle of 45 north of east. Canoeist 2 starts on the opposite shore of the lake, a distance of 1.5 due east of canoeist...
*February 9, 2012 by Alyssa*

**Physics**

The 2500 kg cable car shown in the figure below descends a 200 m high hill. In addition to its brakes, the cable car controls its speed by pulling an 1200 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are ...
*November 3, 2010 by Laila*

**Physics**

We consider the case shown in the figure below. Two objects with masses m and M are connected with a taut string running over a pulley. The pulley rotates without friction. The two masses are given as M = 6.23 kg and m = 2.54 kg. A second taunt string connects the heavier ...
*October 4, 2011 by Kristen*

**Calculus - Volume By Integration**

Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the y-axis: y=(x-2)^3-2, x=0, y=25 Solve by either the disk or washer method. I calculated the volume using the shell method and got 1250pi. However, I can't figure out ...
*November 25, 2013 by Nicole*

**Physics**

A block of mass 3.00 kg is pushed up against a wall by a force P that makes an angle of = 30.0° angle with the horizontal as shown below. The coefficient of static friction between the block and the wall is 0.25. (a) Determine the possible values for the magnitude of ...
*September 26, 2012 by Abraham*

**PHYSICS**

Two objects are connected by a massless string as shown in the figure below. The pulley is massless and rotates without friction. The object of mass m = 1.7 kg slides without friction on an inclined plane which makes an angle of č = 38° with the horizontal. The object of mass ...
*March 17, 2011 by Tanya*

**Physics**

Three objects are connected on an inclined table as shown in the diagram below. The objects have masses 8.0 kg, 4.0 kg and 2.0 kg as shown, and the pulleys are frictionless. The tabletop is rough, with a coefficient of kinetic friction of 0.47, and makes an angle of 20.0° with...
*May 18, 2013 by Joeline*

**science**

Two point charges are placed on the x-axis a follows: charge q1= +4.00nC is located at x=0.200m, and charge q2= +5.oonC is at x=-0.300m. What are the magnitude and direction of the total force exerted by these two charges on a negative point charge q3= -6.00nC that is placed ...
*December 13, 2012 by jay*

**physic**

two point charges are placed on the x axis as follows: charge q1 +4.00nc is located at x = 0.200m, and charge q2 = +5.00nc is at x = -0.300m what are the magnitude and directionof the net force exerted by these two charges on a negative point charge q3 = -0.600nc placed at the...
*February 12, 2013 by yanis*

**physic**

two point charges are placed on teh x axis as follows: charge q1 = +4.00 nc is located at x = 0.200 m, and charge q2 = +5.00 nc is at x = -0.300 m what ae the magnitude and direction of teh net force exerted by these two charges on a negative point charges q3 = -0.600 nc ...
*February 13, 2013 by yanis*

**Physics**

We learned in lecture that the magnetic force on a charge q moving with velocity v in a magnetic field ~B has the form F = q~v × B One important fact about the cross-product is that for two vectors A and B , the following is true A × B = −B × A which may also be ...
*February 23, 2010 by Jess*

**physics**

The figure shows a 0.3 kg baseball just before and just after it collides with a bat. Just before, the ball has velocity of magnitude 11.4 m/s and angle = 31.4 degrees. Just after, it is traveling directly upward with velocity of magnitude 9.00 m/s. The duration of the ...
*March 25, 2013 by Alex*

**Physics**

Four railroad cars, all with the same mass of 11300 kg, sit on a track, as shown in the figure below. A fifth car of identical mass approaches them with a velocity of 19.3 m/s (to the right). This car collides and couples with the other cars. (a) What is the kinetic energy of ...
*July 7, 2014 by Anonymous*

**Physics**

Four railroad cars, all with the same mass of 11300 kg, sit on a track, as shown in the figure below. A fifth car of identical mass approaches them with a velocity of 19.3 m/s (to the right). This car collides and couples with the other cars. (a) What is the kinetic energy of ...
*July 7, 2014 by Anonymous*

**Physics**

Four railroad cars, all with the same mass of 11300 kg, sit on a track, as shown in the figure below. A fifth car of identical mass approaches them with a velocity of 19.3 m/s (to the right). This car collides and couples with the other cars. (a) What is the kinetic energy of ...
*July 7, 2014 by Anonymous*

**maths**

perimeter of a equilateral triangle is given as 42 cm. Find the perimeter of a shaded part of triangle if the 3 sectors of a circle marked are identical
*March 12, 2011 by hesham*

**math**

Mr. Browne bought six shirts at the same sale. They had been marked $31 each. How much did he save on the six shirts?
*January 24, 2012 by karly*

**math**

Edward is buying a pair of shoes. The shoes originally cost $45. If the shirt is marked down 30% what is the new price of he shirt?
*June 2, 2014 by Rainier Ramirez*

**Math**

Lynn was shopping and found a purse that was marked with a discount of "1/3" off. If the original cost of the purse was $80, how much will Lynn pay?
*July 28, 2014 by Lexie*

**living environment **

how many small spaces are marked off within 1 centimeter i know 10mm= 1 cm but when i literally count the small spaces, there are nine of them
*September 9, 2014 by tom*

**physics please help**

The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.030 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.055 kg and is initially at rest. The collision is not head-...
*November 7, 2010 by joshua*

**vector**

Three ropes hold a zeppelin in place, but two of the ropes break. The remaining rope holds the zeppelin with a tension of 255 N at an angle of 40 degrees with the ground due to a wind. The weight (vertical force) of the zeppelin and its contents is 200 N, and the upward ...
*December 16, 2012 by chelseavanderguard*

**Precalculus**

Juana and Diego Gonzales, ages six and four respectively, own a strong and stubborn puppy named Corporal. It is so hard to take Corporal for a walk that they devise a scheme to use two leashes. If Juana and Diego pull with forces of 23 lb and 27 lb at the angles shown in the ...
*February 3, 2010 by Marie*

**physics **

How would I graph a collision. i.e if I have a problem A 12,000 kg railroad car traveling at a speed of 19 m/s strikes an identical car at rest. If the cars lock together as a result of the collision, what is their common speed afterward? What would my x axis be and what would...
*January 25, 2010 by Brendan *

**Calculus**

Hello, could someone please help me with this problem? I'm a little stuck with it. Thanks, Isaac A rectangle is to be inscribed with its base on the x-axis and its other two vertices above the x-axis on the parabola y=9-x^2 (a) find the dimensions of the rectangle of largest ...
*November 28, 2011 by Isaac*

**Algebra**

I have a graph that shows on the Y - axis Just the word speed (no numbers given) And on the x - axis is time (no number given) The graph itself shows a decline in speed But then the line goes up sharply I am suppose to write a scenario for the graph PlEASE HELP
*November 5, 2014 by Don't know how to solve*

**Algebra**

I have a graph that shows on the Y - axis Just the word speed (no numbers given) And on the x - axis is time (no number given) The graph itself shows a decline in speed But then the line goes up sharply I am suppose to write a scenario for the graph PlEASE HELP
*November 5, 2014 by HELP!*

**Proportional Lengths--Desperate for help!!!**

The lengths in the figure are proportional. In the first figure- 3 on top, and 2 on the bottom In the second figure- 4 1/2 on top, and x on the bottom These are the choices that are written on my assignment. One is the correct answer. A. 4 1/2 B. 3 C. 2 1/2 D. 2 I tried ...
*February 25, 2007 by Walter*

**Physics RC**

how does the circuit potential difference,v, across the capacitor varies with R(resistance)in an RC circuit??
*December 1, 2007 by AllyKat*

**MATH Algebra**

How do I find the variation constant and an equation of variation where y varies directly as x and y =70 when x=7
*September 12, 2009 by Anonymous*

**math**

Find the variation equation for the variation statement. z varies directly as x and inversely as y; z = 3 when x = 24 and y = 40
*March 20, 2010 by Anonymous*

**Math**

If b varies directly as the square root of w and b equals a negative 24 when w equals 36, what is w when b is equal to 1/8?
*September 16, 2012 by Trey*

**physics for scientists and engeneers I**

A 0.145-kg baseball pitched horizontally at 27 m/s strikes a bat and is popped straight up to a height of 43 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average force [exerted by the bat on the ball] during contact. [Let the positive axis lie ...
*February 15, 2011 by Johnathon*

**physics**

A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in figure (a). The spring ...
*October 14, 2013 by Leticia*

**math**

6. Find the z-score related to the raw score, mean, and standard deviation as follows. Assume a normal probability distribution. Raw Score50, 45, and 4.ěó=== 7. What is the Z score of a raw score 1.6 standard deviations below the mean? (See Page 540), 8. What percent of ...
*August 16, 2010 by harmony*

**Algebra**

Find the variation constant and an equation of variation where y varies directly as x and y = 20 when x = 10
*April 17, 2008 by Mary*

**Algebra**

Find the variation constant and an equation of variation where y varies directly as x and y=50 when x=10
*August 12, 2010 by Tim*

**algebra**

find the variation constant and an equation of variation where y varies directly as x and y = 54 when x =x6
*April 15, 2012 by Terry*

**algebra**

Find the variation constant and a equation of variation where y varies inversely as x and y=1 when x=15
*June 1, 2012 by Randy*

**Math**

Find the value of y for a given value of x, if y varies directly with x. If y = –252 when x = 84, what is y when x = 74?
*September 1, 2012 by Kelsey*

**Math**

Write an equation: x varies directly as y and inversly directly to the cube of Z
*January 21, 2013 by Sara*

**Physics circular motion**

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a person situated (a) at ...
*February 15, 2011 by Gina*

**Physics**

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration of a person situated ...
*November 6, 2012 by Don*

**Physics**

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration of a person situated ...
*November 6, 2012 by Don*

**geo**

a graphic artist is using a coordinate plane to design a company logo. the log has an equilateral triangle inscribed in a circle.. The lies in quadrant 1, is tangent to the x and y axis and has a radius of 10 units. one side of the triangle is parallel to the y axis and one ...
*May 14, 2014 by mary*

**chemistry**

What is the smalles t subatomic particle
*October 21, 2008 by Frances*

**english**

what is the past particle of kneel?
*June 18, 2010 by jerry*

**AP Physics **

A particle at t1 = -1.4 s is at x1 = 3.6 cm and at t2 = 4.5 s is at x2 = 8.5 cm. What is its average velocity?
*September 3, 2014 by Giulianna *

**physics**

The figure above shows a top view of a bar that can slide without friction. The resistor is 6.00 Ω and a 2.50 T magnetic field is directed perpendicularly downward, into the paper. Let l=1.20 m. a. Calculate the applied force required to move the bar to the right at a ...
*September 17, 2011 by kait*

**Physics **

A velodrome is built for use in the Olympics (see the figure below). The radius of curvature of the surface is 15.9 m. At what angel should the surface be banked for cyclists moving at 15.0 m/s? Choose an angle so that no frictional force is needed to keep the cyclists in ...
*September 30, 2014 by Emily*

**Statistics am I correct?**

Each of ten tickets is marked with a different number from 1 to 10 and put in a box. If you draw a ticket at random from the box, what is the probability that you will draw 2, 3, or 1? A) 1/2 B) 1/10 C) 1/3 D) 3/10 P=1/10 for 1 P=1/10 for 2 p=1/10 for 3 P=3/10
*June 15, 2010 by bart*

**math**

How can the digits 1 through 5 be arranged in the box to make the greast products? The box is 2 row x 3 column. The first bottom column marked with "x".
*September 8, 2012 by cupcake*

**maths**

How much money is saved by buying an article priced at $80 with a 40% discount,rather than buying an article marked at $90 with discounts of 35% and 10% ? A. $ 4.65 B. $1.50 C. $10.50 D. $3.15 E. $4.25 not just answer
*August 15, 2013 by Tomas*

**algebra 1**

A store’s cost for a stereo was $27. Th e markup was 75%. A customer purchased it on sale at 40% off the marked up price. What was the purchase price of the stereo? Please help!
*December 9, 2014 by ben*

**algebra 1**

A store’s cost for a stereo was $27. Th e markup was 75%. A customer purchased it on sale at 40% off the marked up price. What was the purchase price of the stereo? Please help!
*December 9, 2014 by ben*

**physics **

IP You want to nail a 2.4kg- board onto the wall of a barn. To position the board before nailing, you push it against the wall with a horizontal force to keep it from sliding to the ground What happens to the force of static friction if you push against the wall with a force ...
*November 11, 2010 by mathhelp*

**Algebra (please help!)**

If y varies directly as x and y is 3 when x is 8, what is the constant of the variation? I don't understand what they are asking and how to solve this. Please help if you can! Thank you so much! :)
*May 29, 2009 by Faith*

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