Tuesday

April 21, 2015

April 21, 2015

Number of results: 103,464

**math**

A Glass Of Water Is Being Filled With Water At The Rate Of 12 Pi Cm^3/sec And the radius of the top is 6 cm and the radius of the base is 3 cm and the height of the glass is 12 cm , find A) dh/dt and B) radius when the height of water is half?
*August 11, 2011 by jack*

**Math**

The first question is this: Helen designs a rectangle with an area of 225 square units. Her rectangle is the largest rectangle (that is, with largest area) with whole-number side lengths that can be made from the perimeter of the rectangle. A. Whay are the length and width of ...
*February 25, 2013 by Gabby*

**Maths/Right Triangle**

There must be a relationship (formula) between the lengths of the sides of a Right Triangle and the angles opposite these sides. Help Please. Mike. Look at the law os sines or cosines. Law of sines a/sin(A) = b/sin(B) = c/sin(C) Law of cosines a2 = b2 + c2 - 2bc cos(A) b2 = c2...
*October 21, 2006 by Mike*

**ALGEBA 1B**

CAN YOU HELP WITH A FORMULA FOR A RIGHT ANGLE WITH A SIDE OF 24KM A LEGENHT OF 25KM AND A BASE B
*January 21, 2013 by bernie*

**chemsitry help again please**

Write the formula of the conjugate base for acid HClO2 .
*November 19, 2013 by chelsea*

**geometry**

In triangle ABC, if line BC is one inch longer than line AB, line AC is 10 inches shorter than the sum of line BC and line AB , and the perimeter of triangle ABC is 72 inches, find the length of line BC?
*November 3, 2010 by meghan*

**Geometry**

The perimeter of a Triangle(MNO) is equal to the perimeter of square ABCD. If the sides of the triangle are represented by 4x+4, 5x-3, and 17, and one side of the square is represented by 3x, find the length of a side of the square.
*January 6, 2013 by LP*

**geometry**

if line MS is a median of triangle MNQ. Line QS equals 3a-14, line SN equals 2a + 1, and the measurment of angle MSQ equals 7a+1, find the value of a. Is line MS also an altitude of triangle MNQ?
*September 29, 2013 by steve*

**math**

Determine whether the following argument is correct. If it’s not correct, explain what is wrong with the argument and change the minor premise to make a correct argument. If a triangle is equilateral, then it has three equal sides. Triangle ABC doesn’t have three equal sides...
*March 7, 2010 by bill*

**chemistry**

A weak base that encompasses a concentration of 1.4 mol per litre has a percent ionization of 0.63%. Calculate the Kb of this weak base
*April 9, 2008 by Laura*

**Physics**

If a 0.147 kg baseball has a momentum of p = 4.32 kg·m/s as it is thrown from home to second base, what is its velocity? _______ m/s toward second base
*November 8, 2012 by Dakota*

**Math ASAP**

Top Area: 26 square inches Top Perimeter: 34 inches Height: 11 inches What is the Surface Area of the 12-sided prism?
*August 24, 2013 by Omar*

**calculus**

find the volume of the solid whose base is bounded by the graphs of y= x+1 and y= (x^2)+1, with the indicated cross sections taken perpendicular to the x-axis. a) squares b) rectangles of height 1 the answers are supposed to be a. 81/10 b. 9/2 help with at least setup?
*March 30, 2010 by john*

**algebra**

Can anyone help explain how to work this problem out? One factor in flood safety along a levee is the area that will absorb water should the levee break. the coordinates that make up the boundry area are (0,0),(2.8,2.1)and(4.3,4.4) what is the area of the land that would ...
*April 2, 2013 by lee*

**Chemistry**

An aqueous solution of an unknown, monobasic weak base has an initial molarity of .176 M and a final[OH-] of .0000158 M. What is the Kb of the unknown base?
*December 8, 2010 by Natalie*

**Logarithms**

if log base 10 of 2 = .301 then what is log base of 10 of 2000? I know how to solve with a calculator but I'm having a hard time doing it without one.
*October 14, 2012 by Sam*

**Algebra**

You have 50 yards of fencing to enclose a rectangular region. Find the dimensions of the rectangle that maximize the enclosed area. What is the maximum area?
*October 17, 2010 by Hayley*

**Math**

The length of each side of a rhombus is 10cm.if area of its diagonal is 12cm.find its area. Gve me ful sltn nd ans. Is 96cmsq.
*September 13, 2012 by Simran kaur*

**chemistry**

A weak base with a concentration of 1.3 mol/L has a percent ionization of 0.72%. What is the Kb of this weak base? could someone help me with this question or how to get started?
*April 14, 2008 by samantha*

**alg 2.**

can someone please show me step by step how to do this problem... 1/2log base 4 25-2(3logbase4 5-log base 4 25)
*May 8, 2008 by Miley*

**GEOMETRY**

the trapezoid has equal nonparallel sides the upper base is 6. the lower base is 16. and the diagonal is 12. what is the attitude of the trapezoid?
*April 3, 2010 by Anonymous*

**Acid and Base Equilibrium**

What would happen to a weak base dissociation equilibrium if more products were added?
*March 8, 2012 by princess*

**Chemistry**

A 30.0-ml sample of 0.165 M propanoic acid is titrated with 0.300 M KOH. What is the pH at 5 ml of added base, at 10 ml of added base?
*March 19, 2013 by Annie*

**Precalc**

solve the equation: log base 10 of x - log base 10 of (7-4x)=2 Please help i have been stuck on this for awhile!
*November 26, 2013 by Alison*

**Calculus**

A Baseball Diamond has the shape of a square with sides 90 feet long. a player is running from 1st to 2nd base at a speed of 25 feet per second. find the rate at which his distance s is from home plate is changing when the player is 20 feet from 2nd base.
*May 20, 2012 by John*

**Dilations**

1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (-1,2) and (3,-3). a. (2,4) and (6,6) b. (2,4) and (6,6) c. (-2,4) and (6,-6) d. (2,-1) and (-3,3) 2. Given a scale factor of 1/2, find the coordinates for the dilation of ...
*October 24, 2012 by Jman *

**Algebra**

Find the radius of a right cone with slant height 21 m and surface area 168pi m2
*April 10, 2008 by Angelita Marie*

**Math**

The surface area of a cylinder is 200cm. The diameter is equal to the height. Find the radius.
*February 20, 2011 by Richard*

**Math**

The surface area of a cylinder is 200cm. The diameter is equal to the height. Find the radius.
*February 20, 2011 by Richard*

**Math**

The radii of two cylinders 3:2 and height 7:4.find the ratios of their curved surface area.
*February 5, 2013 by Simon*

**HELP!!! Math**

The area of a trapezium is 360 in^2. If the ratio of the bases to the height is 6:10:5, find the dimensions of the tarpezium.
*June 5, 2013 by Jnr John*

**Math (help)**

how to find the surface area of a cone with a diameter of 8 and a slant height of 7? with steps? please
*April 8, 2014 by luna*

**maths**

The curved surface area of the cylinder is 1760cm^2.and its volume is 12320cm^3.Find its height.
*March 21, 2015 by devi*

**physics**

given a right triangle with hypotenuse of 12.5 cm, side y of 7.2 cm? find length of side x and size of other two angles? so you set it up as pythagoreum theory? 12.5= x^2 + 7.2
*October 20, 2009 by tim*

**MATH HELP!!!**

Given a right triangle with a side of length 4 and a hypotenuse of length 7, find the measure of the two acute angles. (Round to the nearest hundredth.)
*July 1, 2010 by Taylor*

**geometry **

find values for r and t such that the inequality r < S < t best describes s, the length of the third sides of a triangle for which the lengths of the other two sides are given. 11. 2 and 4 thanks for the help !
*October 27, 2010 by lisa*

**Math **

find values for r and t such that the inequality r < S < t best describes s, the length of the third sides of a triangle for which the lengths of the other two sides are given. 11. 2 and 4 thanks for the help !
*October 27, 2010 by lisa*

**Geometry**

Hi, I don't have much time to turn this in. I think I got all the questions right, but I just want to be sure. I would appreciate some feedback! Thank you! 1. What is the formula for calculating the length of the diagonal of a right rectangular prism on the basis of the prism...
*February 25, 2010 by Emma*

**math**

Two corresponding sides of similar polygons are in the ratio of 8:7. If the area of the smaller figure is 512 square meters, what is the area of the larger figure? A) 3584 m B) 134,217,728 m C) 392 m D) Not enough information given
*October 29, 2009 by jeng*

**Geography**

What is the name given to the vast rural area in the center of the Australian continent? What natural features explain the very sparse population of this area? Please help i'm very confused and all the websites have different info.
*September 24, 2013 by Saru*

**Geometry**

Indirect Proofs Prove a triangle cannot have 2 right angles. 1) Given triangle ABC. 2) Assume angle A and angle B are both right angles is true by one of two possibilities (it is either true or false, so we assume it is true) This is my first time to do indirect proofs, so if ...
*November 18, 2010 by chica*

**Math URGENT!!**

A rectangular garden has an area if 12a^2-5a-2m^2 A.) Write the area as the product of two binomials with integer coefficients B.) the garden is to be completely enclosed by a path 1 m wide. find and simplify an expression for the area of the path C.) the path is concrete, ...
*September 28, 2014 by Maya*

**Math**

A hemisphere of radius 7 sits on a horizontal plane. A cylinder stands with its axis vertical, the center of its base at the center of the sphere, and its top circular rim touching the hemisphere. Find the radius and height of the cylinder of maximum volume. radius: height:
*March 22, 2012 by John*

**math**

make triangles and find the area of those triangles and then add em together. I need to find the area of a polygon,breaking into simpler parts. how do you do it?
*April 18, 2007 by jamay*

**math**

how do we find the surface area? top: bottom: right: left: front: back: its still hard when we i find the surface area of a rectanguar prism.
*April 20, 2012 by Celest*

**Math**

"Find the area of a rhombus with sides of length 10 in. and longer diagonal of length 16 in." and Also, how do you solve the problem "Find the area of a regular decagon with radius 4 cm."
*June 9, 2013 by Celina*

**STASTICS**

If the median home price in your area has decreased in your area in the last 2 years, how does this differ from the mean price in your area? Please explain why and include examples.
*August 24, 2010 by sue*

**Re: Physics/Math**

Calculate the ratio of the drag force on a passenger jet flying with a speed of 750 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at one-fifth the speed and half the altitude of the jet. At 10 km the density of air is 0.38 kg/m3 and at 5.0 km...
*February 10, 2007 by COFFEE*

**math**

A cyclist leaves his training base for a morning workout, riding at the rate of 18 mph. One hour later, his support staff leaves the base in a car going 52 mph in the same direction. How long will it take the support staff to catch up with the cyclist once the car leaves the ...
*September 21, 2010 by aaron kennedy*

**Calculus**

A construction company wants to build a rectangular enclosure with an area of 1000 square feet by fencing in three sides and using its office building as the fourth side. Your objective as supervising engineer is to design the enclosure so that it uses the least amount of ...
*August 9, 2011 by Joey*

**math**

Adam has built a garden shed in the shape described. a square based pyramid with the height of 3.5m on top of a cube with base 4m by 4m and height 2m. calculate the volume of the shed, to the nearest cubic metre. thanks.
*May 16, 2010 by Ted*

**Math**

Is anyone familiar with base ten? I need to show my work on how I recieved my answer. Write the numeral in base ten. 200six =532
*March 21, 2010 by kevin*

**Geometry**

Using vectors, show that the centroid of a regular pyramid with a rectangular base lies on the altitude to the base and is 4/5 of the altitude's length from the vertex.
*December 3, 2012 by Delia*

**Chemistry**

An experiment requires 0.7 M NH3(aq). The stockroom manager estimates that 15 L of the base is needed. What volume of 15 M NH3(aq) will be used to prepare this amount of 0.7 M base?
*March 8, 2013 by Matthew*

**geometry**

I have a question: My textbook says "The surface of a right prism is 224 sq. feet, and the length of a side of the square base is one-third the height. What are the dimensions of the prism?" How do I find out the dimensions when I don't know the height or the length of the ...
*February 26, 2008 by Meredith*

**Calculus **

The region R is bounded by the x-axis, x = 1, x = 3, and y = 1/x^3 A) Find the area of R B) B. Find the value of h, such that the vertical line x = h divides the region R into two Regions of equal area.
*May 6, 2014 by Samantha*

**math**

Empirical data suggest thatthe surface area of a 180-cm-tall human body changes at the rate ofsquare meters/kilogram, where W is the weight of the body inkilograms. If the surface area of a 180-cm-tall human body weighing 70 kg is 1.886277 m ,what is the surface area of a ...
*May 21, 2012 by siti*

**math**

describe the largest pen area possible using the same amount of fencing in 6'X14' area. How do the perimeter and area compare to the pen above?
*September 25, 2012 by niemann*

**Algebra**

I have 104 feet to build a dog pen in a rectangle shape. Area=52x-x2 x= width What is the largest width to maximize the area? What is the area?
*April 16, 2013 by Amy*

**MATH**

1. Let triangle ABC be a triangle such that angle ACB is 135 degrees. Prove that AB^2 = AC^2 + BC^2 - (Root 2) x AC x BC 2. Simplify: 2/1! - 3/2! + 4/3! - 5/4! + ..... + 2010/2009! - 2011/2010! Where k! is the multiplication of all numbers up to k (e.g. 5! = 5x4x3x2x1=120) 3. ...
*August 21, 2010 by Gerald*

**algebra-Plz help**

Posted by bailey on Monday, January 8, 2007 at 8:32pm. Posted by bailey on Monday, January 8, 2007 at 2:12pm. The area of a rectangular blanket in square centimetersis 40x^2+2x-65. The width is 4x-5cm^2. Find the dimensions of the blanket in terms of x. Can someone plz help ...
*January 9, 2007 by bailey*

**Math probability question**

a spinner is divided into three areas x,y,z. the measure of angle a is 90 degrees, angle b is 120 degrees and angle c is 150 degrees. If the spinner is spun once, find the probabliity that it will land in 1) area X 2) area y 3) area z
*October 8, 2008 by Bob*

**physics**

You are investing an accident in which a vehicle traveling with a horizontal velocity Vo leaves the top of a cliff of height h, and lands a horizontal distance (x) from the base of the cliff. Prove that the relationship between vo and the other variables is given by the ...
*March 22, 2012 by Adam*

**math check please**

1 four buttons have diameters of 5/8 , 3/4, 9/16, and 7/8 which buttons is smallest? answer 9/16 2. I spent 1/3 of my time doing math homework and 2/7 preparing for a history test . what fraction of study time remain? answer: 13/21 3. least common multiple of 3, 6, 9 answer 18...
*February 8, 2007 by larry*

**geometry**

volume of a rectangular pyramid if the height is 13 and the base sides are 12 and 15
*January 24, 2011 by lucila*

**math am i right**

So do you mean that I should multiply the base (7) by the height (18)?
*October 2, 2012 by Yog*

**math **

1) on a map of scale 1cm to 250m the area of car park is 3cm^2.what is the actual area of the car park in hecares(1 hectare= 10,000m^2) 2)The area of the playing surface at wembly stadium is 3/5 of a hectare . what area willit occupy on a plan drawn to a scale of 1:500?
*May 29, 2011 by Reshma *

**Math (Area)**

I need help on where to begin with this problem. You are installing a new deck around your pool. The pool is rectangular with the dimensions 8m by 4m. The deck will surround the pool and will have a width by 2m. What is the area of the deck? I know that A=LxW and that the Area...
*February 27, 2012 by Ali*

**trig-math**

4. A carpenter wants to be sure that the corner of a building is square and measures 6.0 ft and 8.0 ft along the sides. How long should the diagonal be? A. 12 ft B. 10 ft C. 11 ft D. 14 ft 5. A wheel 5.00 ft in diameter rolls up a 15.0° incline. How far above the base of the ...
*April 28, 2012 by LOVE*

**geometry**

Two forces are pushing on an object, one at 12 lbs of Force and one at 5.66 lbs of Force. The angle between them is 35° (each is 72.5 from horizontal, such that the forces make a v with the object in the center). 17. What is the total Force on the object? 18. What is the ...
*December 6, 2011 by Cam*

**geometry**

Two forces are pushing on an object, one at 12 lbs of Force and one at 5.66 lbs of Force. The angle between them is 35° (each is 72.5 from horizontal, such that the forces make a v with the object in the center). 17. What is the total Force on the object? 18. What is the ...
*December 6, 2011 by Cam*

**geometry**

Two forces are pushing on an object, one at 12 lbs of Force and one at 5.66 lbs of Force. The angle between them is 35° (each is 72.5 from horizontal, such that the forces make a v with the object in the center). 17. What is the total Force on the object? 18. What is the ...
*December 16, 2011 by Cameron*

**physics**

An arrow is shot from the top of a building (height of 30 meters). The arrow travels 100 meters in the horizontal direction from the base of the building to the point where it hits the ground in 4 seconds. Find the angle of release, actual velocity at release, and maximum ...
*February 22, 2010 by Brad*

**Computer Math**

Can anyone help me? Here's what I'm looking for: Col. A = Base period number Col. B = Given number this current period. NEEDED: Spreadsheet formula for: If B >= A, what is %? (Example: A=20, B=30, the # I want should read 50.0, not 1.5) Further, If B < A, what is the ...
*July 21, 2006 by Al*

**precalculus half angle question stumped**

Given tanu= -1/3 and sinu <0, find sin(u/2) if 0 is less than or equal to u < 2 pie I think its a right triangle in fourth quadrant with the point (3,-1) (hypotenuse equals square root of ten) but I'm brain dead and can't find u or any solutions.
*January 11, 2010 by george *

**physics**

If a 0.18 kg baseball has a momentum of p = 9.4 kg·m/s as it is thrown from home to second base, what is its velocity? m/s toward second base
*January 20, 2011 by Anonymous*

**Reading**

what is base word for calling, called, calls. what is the base word for burning, burned, burns
*October 10, 2011 by ashley*

**Algebra 2 **

Use the laws of logarithms to condense the following expressions. log base 5 of 6 - log base 5 of x
*April 11, 2013 by Anonymous*

**Algebra 2 **

Use the laws of logarithms to condense the following expressions. log base 3 of 2 + 2 log base 3 of x
*April 11, 2013 by Anonymous*

**Calculus **

You are given a piece of sheet metal that is twice as long as it is wide an has an area of 800m^2. Find the dimensions of the rectangular box that would contain a max volume if it were constructed from this piece of metal by cutting out squares of equal area at all four ...
*March 26, 2014 by Marie*

**Algebra**

How would I complete this problem? Geometry. The area of a rectangle of length x is given by 3x^2 + 5x. Find the width of the rectangle. I think the width is 3x+5 but not sure. Subjects Art Business Computers English Foreign Languages Health Home Economics Mathematics Music ...
*June 5, 2007 by Loreal*

**geometry**

The hypotenuse of a right triangle is 25 cm long. One leg of the same triangle is 7 cm long. What is the length of the other leg? Explain how you found your answer.
*June 30, 2011 by Zoey*

**geometry**

The measure of an exterior angle of an isosceles triangle is x degrees. What are the possible angle measures of the triangle in terms of x? Describe all the possible values of x.
*November 6, 2011 by Anonymous*

**geometry**

A 30-60-90 triangle is inscribed in a circle. The length of the hypotenuse is 12 inches. If a coin is tossed on the figure, what is the probability that the coin will land in the circle, but outside the triangle?
*May 8, 2012 by Piggy*

**math**

Two similar figures have sides in the ratio of 2:3. If a side of the smaller triangle has a length of 7, what is the length of the corresponding side of the other triangle?
*May 9, 2012 by heather*

**geometry**

A 30-60-90 triangle is inscribed in a circle. The length of the hypotenuse is 12 inches. If a coin is tossed on the figure, what is the probability that the coin will land in the circle, but outside the triangle?
*May 10, 2012 by Piggy*

**Government senior college ikoyi**

An equilateral triangle of side 20cm is inscribed in a circle.calculate the distances of a side of the triangle from the centre of the circle.
*April 5, 2013 by Monday Godwin*

**Geometry**

I need to bisect two angles of a triangle, measure the triangle I didn't bisect, and then construct a point of intersection of the two angle bisectors. No idea what any of that means. thanks
*August 25, 2010 by Lorenzo*

**math**

the short side of an isosceles triangle is 16cm long. by increasing each side length by 24 cm doubles the perimeter.how long are the other sides of the original triangle? ..
*December 2, 2010 by Anonymous*

**algebra**

A set of 2 similar triangles was drawn in a design. One of the triangles was ½ of the other. If the measures of the smaller triangle were 5, 7, and 12 cm, the measures of the larger triangle = 10,14 and 20 cm. true or false
*March 24, 2011 by katie*

**Please help in triangle**

ABC is an isosceles triangle with AB=BC and ∠ABC=123∘. D is the midpoint of AC, E is the foot of the perpendicular from D to BC and F is the midpoint of DE. The intersection of AE and BF is G. What is the measure (in degrees) of BGA?
*June 19, 2013 by Mathslover*

**chemistry**

when pressure decreases what happens with the boiling point, it decreases, increases or stays the same? I read the book (the example used is water) were it says that if vapor pressure is less than the pressure pushing down on the surface the bubbles formed collapse; but when ...
*May 23, 2007 by Fabiola*

**life science**

Hi I am doing a report on manas natianal park. and how it got on the world heritage site. but i cant find anything on iti have to answer these question Describe the diversity of life forms found in the area. Describe the biological interrelationships among the life forms in ...
*October 8, 2008 by amy*

**geometry**

PLEASE HELP WITH A FEW QUESTIONS triangle ABC has side lengths 8, 15, and 17 do the side lengths form a pythagorean triple? the length of the hypotenuse of a 30-60-90 triangle is 7 find perimeter to approach the runway, a pilot of a small plane must begin a 10descent starting ...
*May 23, 2012 by brittany*

**AP Physics**

In a period of 2s, 4.8E23 nitrogen molecules strike a wall area of 8.6 cm^2. If the molecules move at 308 m/s and strike the wall head-on in a perfectly elastic collision, find the pressure exerted on the wall. The mass of one N2 molecule is 4.68E-26kg. Answer in terms of kPa...
*November 15, 2009 by JL*

**calculus**

Suppose the volume, V , of a spherical tumour with a radius of r = 2 cm uniformly grows at a rate of dV/dt= 0.3 cm^3/day where t is the time in days. At what rate is the surface area of the tumour increasing? The volume of a sphere is given by V =4 3πr^3and the surface ...
*November 1, 2014 by Quratulann*

**mathematics**

find the area of the region between the curve y = 3-x^2 and the line y = -1 by integrating with respect to y you first have to solve for x x=(3-y)^(1/2) then area ⌠ (3-y)^(1/2 dy from -1 to 3 ⌡ =-2/3 (3-y)^(3/2 | from -1 to 3 = -2/3(0 - 8) = 16/3 but this is only ...
*April 18, 2007 by denisa*

**Physics**

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 23.0° below the horizontal. It strikes the ground 6.00 s later. (Ignore air resistance.) (a) How far horizontally from the base of the building does the ...
*October 13, 2009 by Maria*

**Physics urgent pls!**

A ball is tossed from an upper-storey window of a building.The ball is given an initial velocity of 8 m/s at an angle of 20 degrees below the horizontal.it strikes the ground 3s later .(a) How far horizontally from the base of the building does the ball strike the ground? (b)...
*February 22, 2013 by Sammie*

**Math, Quadratic Functions**

Eighty metres of fencing are available to enclose a rectangular play area. Determine the dimensions that will enclosed the maximum area. What is the maximum area?
*January 16, 2015 by Sharon*