Friday

August 29, 2014

August 29, 2014

Number of results: 49,926

**physics**

t(s)=0.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0 v(m/s)=0.0,4.6,8.9,13.4,18.0,22.9,27.6,32.0 find the area underneath the graph between t=2.0s and t=6.0s, i know i will have to break this down into two separate shapes, a rectangle and a triangle then add them together, i just don't know ...
*February 8, 2012 by Annie*

**Algebra**

The maximum velocity of a roller coaster depends on the vertical drop from the top of the highest hill to the bottom of that hill. The formula:V(h)=sqrt(h-2) , gives the relationship between maximum velocity, V(h) in feet per second, and height, h in feet. 1. Identity the ...
*November 3, 2013 by Dele*

**Algebra**

The maximum velocity of a roller coaster depends on the vertical drop from the top of the highest hill to the bottom of that hill. The formula:V(h)=√h-2 , gives the relationship between maximum velocity, V(h) in feet per second, and height, h in feet. 1. Identity the ...
*November 3, 2013 by Dele*

**Algebra 1 urgent **

(a) The surface area of the prism shown is 314 square meters. Write an equation that u can solve to find the value of w. side a=wm b=8m and c=(w+4)m (on the picture) I'm guessing u use the formula surface area=2ab+2bc+2ac??? Well if so I need all that solved into y=ax*2+bx+c ...
*September 5, 2013 by Taylor *

**Math (please help steve)**

In triangle ΔABC, AB^2+BC^2+AC^2=cosAsinBsinC+sinAcosBsinC+sinAsinBcosC. The area of the circumcircle of ΔABC can be represented as a/bπ, where a and b are positive coprime integers. What is the value of a+b?
*August 12, 2013 by Anonymous*

**Math. I really don't get this question**

three circles are manually tangent externally. their centers form a triangle whose sides are of length 8, 9, 13. find the total area of the three circles
*December 10, 2013 by Liz*

**math**

I am trying to figure out the surface area of a garage. It has an A shaped roof. There is an overhang of 0.5m on each corner. Do I include this in determining the area of the roof? I need to figure out how much stucco is needed for the garage minus roof, window, and door. If i...
*September 24, 2013 by Cherie*

**AFM**

Show the solutions of the two examples given in the notes. (Hint: Finding a "solution" means solving for all missing sides and angle measures in each triangle.) (a) If a = 4, b = 3, and A = 36o. (b) If a = 3, b = 4, and A = 48.59o
*January 3, 2013 by Kiana*

**Algebra 2**

Demand for pools. Tropical Pools sells an above ground model for p dollars each. The monthly revenue for this model is given by the formula R (p) = - 0.08p2 + 300p. Revenue is the product of the price p and the demand (quantity sold). a) Factor out the price on the right-hand ...
*February 22, 2009 by Nina*

**Algebra**

Demand for pools. Tropical Pools sells an above ground model for p dollars each. The monthly revenue for this model is given by the formula R (p) = - 0.08p2 + 300p. Revenue is the product of the price p and the demand (quantity sold). a) Factor out the price on the right-hand ...
*February 22, 2009 by jackie*

**physics help please!!!**

From what maximum height can a 61 kg person jump without breaking the lower leg bone of either leg? Ignore air resistance and assume the CM of the person moves a distance of 0.65 m from the standing to the seated position (that is, in breaking the fall). Assume the breaking ...
*March 14, 2010 by Anonymous*

**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*

**Chemistry**

Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.
*January 24, 2013 by Raphael*

**Chemistry**

Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.
*January 24, 2013 by Raphael*

**Chemistry**

Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.
*January 24, 2013 by Raphael*

**Chemistry**

Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.
*January 24, 2013 by Raphael*

**Chemistry**

Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.
*January 24, 2013 by Raphael*

**Chemistry**

Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.
*January 24, 2013 by Raphael*

**Chemistry**

Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.
*January 24, 2013 by Raphael*

**trig**

Question Part Points Submissions Used The angle of elevation to the top of a very tall Building is found to be 7° from the ground at a distance of 1 mi from the base of the building. Using this information, find the height of the building.
*October 2, 2011 by sanam*

**Basic Caluculus**

f(x)=2x^3-x^2+1 [1,4]=interval Using the limit process, (once with right endpts, and the other with left entdpts.) find the area under the curve and above the x-axis on the given interval i got the area to be 107.5 for right endpts. (not sure if its right) but what about the ...
*May 29, 2011 by Munni*

**math**

a baseball diamond is actually a square. the distance between bases is 90 feet. when a runner on first base tries to steal second, a catcher has to throw from home to second base.how far is it between home and second base?
*September 18, 2012 by daniel*

**Bio**

a) Make a single base pair substitution mutation in the gene below that results in a mature mRNA that is shorter than the mature mRNA produced by the original gene. When you are satisfied with your change and its effect, click the "Final Check" button. Note that a "single base...
*May 14, 2013 by Amos Amines*

**Algebra**

Please help I don't have any clue on how to solve this problem!!! Please help! Suppose you are tossing an apple up to a friend on a third story balcony. After t seconds, the height of the apple in feet is given by h = -16t^2 + 38.4t + .96. Your friend catches the apple just as...
*January 20, 2008 by Bretagne*

**Chemistry**

Classify the following as: Weak or strong acid, weak or strong base, salt (from weak/strong acid and base). If appropriate, split the formula into its component ions. HNO3 So far, all I have is: HNO3 + H2O -> NO3^- + H3O^+ And I know HNO3 is a strong acid. What would I do ...
*May 26, 2007 by Raj*

**chemistry - empirical formula**

write the empirical formula for each of the following molecular formulae" a)P4O10 b)C2H6 Confused as to what the diff.is b/w empirical and formula...have no idea how to answer these b/c they look like empirical formulas to me
*May 23, 2008 by Sarah*

**maths**

Choose three options which are true: a) an angle of 150 degrees is equivalent to 2pie/3 radians. b) Cos 0 = cos (0 pie/2) for al values of 0. c) Sin 0 = cos (0 pie/2) for all values of 0. d) If triangle ABC has a right angle at B, then sin A = cos C e) In any triangle ABC...
*May 20, 2007 by sarah*

**geometry**

A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container. The base has the front and sides as 2 and 2 inches the height is 5 in and the 2 inches.
*May 27, 2013 by Hannah*

**geometry**

A manufacturer made a container that looked like the Washington Monument to fill with raisins, as shown. Find the volume of the container the sides on the bottom are 2 inches for the base and the height is 7 inches
*May 28, 2013 by Hannah*

**Geometry**

The surface area of acone with height 15 cm is 500π square cm. Find the radius of the cone. Round your answer to two decimal places.
*June 1, 2011 by John*

**Macroeconomics**

Ok so this probably seems easy but I am not sure how to work these. We are given a table with data Price Paper Price 2010 2 100 2.5 2011 3 125 3 2012 4 150 3.5 we are usig 2011 as base year a) what is nomial GDP? b) Real GDP? c) GDP Price Index d) CPI Is nomial just ...
*September 12, 2012 by Isis*

**Algebra**

The formula T=2π√L/480 can be used to find the period (T in seconds, the time it takes a pendulum to complete one cycle) of a pendulum that is L cm long. (a)Rewrite this formula using rational exponents. Don't forget to rationalize the denominator. (b)Solve the ...
*June 11, 2011 by Melvin*

**math**

If a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 10t + 330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundredth...
*June 10, 2011 by Sam*

**precal**

use a right triangle to write the expression as an algebraic expression. assume that x is positive and in the domain of the given inverse trigonometric function. sin(sec^-1 ăx^2+ 25/(x))
*March 8, 2010 by adam2*

**Geometry-EXtended Exponents**

Use the given ratio and information in the figure to find the value of the variable(s). XY:YZ:XZ=7:10:14 XY=b-7 These are side lengths YZ=b+20 to a triangle. Side XZ=5c-24 note XZ is the hypotenus
*November 29, 2010 by chica*

**Math **

Two triangles r the same height. The slope side of triangle A is double the slope of B. how do the lengths of these two triangles compare? My last question please help
*January 23, 2014 by Raksha *

**trig**

A plane is flying 225 mph heading South 25°West. The wind is blowing South 80°East at 60 mph. What is the bearing of the plane? What is the smallest angle of the triangle? What is the largest angle of the triangle? What is the remaining angle of the triangle? What is the ...
*May 26, 2011 by Anonymous*

**chemistry**

Write down a balanced acid-base reaction given the following reactants Reactants: NaOH(aq) + HCl(aq)
*February 10, 2011 by jonh*

**CHEMISTRY!!!**

Calculate the equilibrium constant for the following reaction of a weak acid and base HF + NH3 <=> NH4+ + F- given Ka (HF) = 6.9 x 10^-4 and Kb (NH3) = 1.8 x 10^-5 and Kw = 1.0 x 10^-14
*April 17, 2011 by max*

**math**

A childrens play area is triangular. The sides of the play area measure 90m ,225m and 255m respectively . Calculate the area of the play area?
*July 26, 2012 by donovan*

**Math**

A children's play area is triangular. The sides of the play area measure 90m, 225m and 255m respectively. Calculate the area of the play area.
*August 31, 2012 by Danielle*

**Organic chem**

Classify each as a lewis acid or lewis base... A)H20 B)O2- C)Cu2+ D)SO3 E)AlCl3 Lewis acids are electron pair acceptors. Lewis bases are electron pair donors. Look at H2O, for example. .. H:O: .. H This molecule has no "holes" to accept an electron. Would you expect this to be...
*October 15, 2010 by Adam*

**Geometry**

My class is learning about the areas of regular polygons and circles and I'm so confused. How are you supposed to figue out the area a regular triangle inscribed in a circle when all you know is that the radius of the circle is 1.5?
*April 29, 2011 by Sam*

**geometry**

f equilateral triangle JKL is cut by three lines as shown above to form four equilateral triangles of equal area, what is the length of a side of one of the smaller triangles?
*March 29, 2012 by Anonymous*

**Math**

The largest multi-story building built by the Anasazi Indians called the Pueblo Bonito. The shape of its foundation is nearly parabolic, with a base (at the top of the photo) of about 500 feet and a height of about 300 feet. 1. Sketch the multistory building on a coordinate ...
*November 14, 2012 by Mike*

**math**

the length of a rectangle exceeds its breadth by 4cm. The length and breadth are increased by 3 cm .The area of the new rectangle will be 81cm square more than the given rectangle .Find the dimensions of the given rectangle?
*August 14, 2012 by TUHITUHI*

**CHEMISTRY**

Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^-5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH ---> H2O + A^- calculate the pka value of the acid and determine the number of moles of acid ...
*November 9, 2011 by Alexander*

**Chemistry**

Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^-5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH ---> H2O + A^- calculate the pka value of the acid and determine the number of moles of acid ...
*November 9, 2011 by Alex*

**math**

How do you find the area of a trapezoid with a height of 9 and 1/5 and two bases of 14 feet and 20 feet?
*January 10, 2010 by Alexa*

**geometry**

The bases of a trapezoid measure 1/4 and 3/8 inches, and the height is 1 inch. What is the area of the trapezoid?
*March 10, 2010 by travis*

**Math**

The glass in a frame has an area of 91 m sqaurd. If the window length is 14 m, what is the window height?
*December 16, 2010 by Lisa*

**Geometry**

THe area of a trapezoid is 80 units. If its height is 8 units, find the length of its median?
*February 8, 2011 by Malik *

**Math **

A can has a diameter of 9 inches and a height of 11 inches. What is the area of a label that goes around a can?
*April 2, 2011 by Reneisha*

**Geometry**

what is the lateral area of a regular pyramid with a 6 inch width and a 8 inch height
*November 10, 2011 by James*

**Geometry**

Area of trapezoid is 80 square units, height is 8 units. What is the lenght of median ?
*March 7, 2012 by Maria*

**math**

A right circular cylinder has a diameter of 16 mm and a height of 12 mm. What is the surface area of the cylinder?
*November 19, 2012 by Anonymous*

**maths**

the area of a trapezoid is 360in^2.if the ratio of the height is 6:10:5, find the dimensions of the trapezoid.
*June 6, 2013 by ELIJAH HAVA*

**5th grade**

The square and triangle have the same perimeter 12cm.Each figure is made up of sides of equal measure.How long is each side of the triangle ?
*April 25, 2010 by Anonymous*

**Math**

Bren sets the table. He takes a square napkin and folds it in half. He makes a triangle. What two names can you use to describe the triangle?
*April 6, 2012 by Lynne*

**trigonometry **

Use the given information to solve the triangle. 1) C = 145 degrees, b = 4, c = 14. 2) A = 150 degrees, C = 20 degrees, a = 200.
*December 15, 2011 by Britt *

**math**

is a triangle with sides 7-7-7 a right triangle
*March 19, 2010 by PAVLEEN*

**30-60-90 triangle**

The hypotenuse of a 30-60-90 triangle is 10. Find the perimeter. How do i do that?
*March 28, 2011 by Jesse*

**math**

can a right triangle be a scalene triangle?
*October 31, 2010 by gmoney*

**algebra**

triangle 1 is 6,16,32 triangle 2 is 9,24 h they are similar how do i find h?
*March 12, 2012 by becca*

**M.I.G**

Can a right-angled triangle be an isoscele triangle?
*January 24, 2013 by njebo*

**math**

if the angle of a triangle are in a ratoi 5:5:8 what is the triangle
*March 11, 2013 by khanyisile*

**math**

Is a triangle with sides of 25,20, 15 a right triangle?
*October 12, 2013 by Steve*

**calculus**

A rectangle is constructed with its base on the diameter of a semicircle with radius 5 cm and with two vertices on the semicircle. What are the dimensions of the rectangle with maximum area?
*November 4, 2010 by Bob*

**Calculus**

A rectangle is constructed with its base on the diameter of a semicircle with radius 5 cm and with two vertices on the semicircle. What are the dimensions of the rectangle with maximum area?
*November 7, 2010 by Tiff*

**Geometry**

The base of a right prism 50 inches high is a rhombus, with diagonals 30 and 16 inches. Find the total surface area of the prism.
*March 3, 2013 by Gigi*

**geometry**

Pine Tree In order to estimate the height h of a tall pine tree, a student places a mirror on the ground and stands where she can see the top of the tree, as shown. The student is 6 feet tall and stands 3 feet from the mirror which is 11 feet from the base of the tree. What is...
*January 17, 2012 by Anonymous*

**Geometry**

Find the area of the polygon 9 in. by 11 in. height 3 wouldn't it be 30 in^ It depends on the polygon.
*March 1, 2007 by Fionna*

**algebra**

How do I find a the surface area of a can that has a diameter of 4 inches and a height of 3 inches?
*January 19, 2011 by paige*

**geometry**

find the area of a trapezoid whose diagonals are each 30 and whose height is 18.
*February 13, 2011 by alison*

**geometry**

Trapezoid ABCD has height 4, BC=5, and AD and BC are perpendicular. Find the area of the trapezoid.
*February 13, 2011 by sally*

**geometry**

Trapezoid ABCD has height 4, BC=5, and AD and BC are perpendicular. Find the area of the trapezoid.
*February 13, 2011 by sally*

**math**

find the area of the label on a can with a radius of 5.1 centimeters and a height of 2.9 centimeters.
*April 28, 2011 by torri*

**geometry**

What is the area of a trapezoid with bases of 2inches and 4 inches and a height of 3 inches
*August 8, 2011 by Linda*

**Math**

What is the height of a trapezoid with an area of 60 square meters and bases of 8m and 12 meters?
*October 25, 2011 by Alex*

**math**

what is the surface area of a cylinder with a radius of 2 units and a height of 22 units
*June 12, 2013 by devon*

**algebra**

im trying to help my son i have no ida about this stuff any help would be great When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where v is the initial velocity (...
*January 12, 2010 by joni*

**Math Essay**

I have to write this paper over the history of math, can you please give me some other websites that I can use? So far I have one website from wikipedia. Also, can you please read my introduction? As of today, there are plenty of new developments in the area of Mathematics. ...
*November 9, 2007 by Soly*

**Algebra 1 **

Genie has 100 feet of fence with which to make a rectangular cage for her rabbit. If she uses the wall of her house as one side, the area of the cage in square feet is given by the polynomial -2w^2 + 100w, where w is the width of the cage in feet. What is the area of the cage ...
*February 21, 2014 by Anonymous*

**Math**

What is the ratio of the surface area for a pair of cylinders when the ratio of the height is 1:3? A) 1:4 B)1:9 C)1:1 D) 1:27 My answer is D) 1:27. Is this correct? Thanks.
*September 6, 2009 by B.B.*

**geometry**

The width and height of a rectangle are in the ratio 5:1 and the perimeter is 72 inches. Find the area of the rectangle.
*June 13, 2010 by check fast plz*

**geometry**

A rectangle has a length of 9inches and a height of 1.5 feet. What is the area of the rectangle in square inches?
*March 13, 2012 by Kay*

**Geometry**

The area of a trapezoid is 80 square units. If its height is 8 units, find the length of its median.
*April 23, 2012 by Meredith*

**math **

what is the surface area of a right cone with a diameter of 15 units and a slant height of 34 units.
*June 12, 2013 by devon*

**mathematics**

The hexagonal pyramid cone has a height of 65cm.Calculate the surface area of the cone?
*July 23, 2013 by Katlego*

**Chemistry**

Given the thermodynamic data in the table below, calculate the equilibrium constant for the reaction: 2SO2(g)+O2--> 2SO3 Substance (DeltaH^o) (Delat S^o) SO2 -297 249 O2 0 205 SO3 -395 256 Answer (it was given) 2.32x10^24 Even though the answer is given (2.32x10^24) I just ...
*March 16, 2008 by Sara*

**Chemistry**

Given the thermodynamic data in the table below, calculate the equilibrium constant for the reaction: 2SO2(g)+O2--> 2SO3 Substance (DeltaH^o) (Delat S^o) SO2 -297 249 O2 0 205 SO3 -395 256 Answer (it was given) 2.32x10^24 Even though the answer is given (2.32x10^24) I just ...
*March 16, 2008 by Sara*

**calculus**

Please check this for me: the lenght l, width w, & height h of a box change with time. At a certain instant the dimensions are l=1m & w=h=2m. L and W are increasing at a rate of 2m/sec while H is decreasing at a rate of 2m/sec. At that instant, find the rate at which the ...
*February 27, 2012 by Freddy*

**Math**

(X+b) (x+c) where b <0 & c<0, the equation turns into x^2+gx+k What is true about g and k G<0 K>0 G<0 K<0 G>0 K>0 G>0 K<0 Two triangles r the same height. The slope side of triangle A is double the slope of B. how do the lengths of these two ...
*January 23, 2014 by Raksha *

**maths**

In a triangle ABC, AB = 2 cm, BC = 3 cm and AC = 4 cm. Choose the two options which give a triangle PQR which is similar to triangle ABC. Options: A. PQ = 1 cm, QR = 2 cm and PR = 3 cm. B. PQ = 1 cm, QR = 1.5 cm and PR = 2 cm C.PQ = 2.5 cm, QR = 1.5 cm and PR = 3 cm. D. PQ = ...
*April 20, 2007 by katie*

**Stats**

The height of adult women in the U.S. is normally distributed, with a mean height of 64 inches and a standard deviation of 3 inches. With this in mind, answer the following: a) The shortest 10% of women are shorter than what height? b) The middle 75% of all women are between ...
*September 27, 2009 by CM*

**stats**

The height of adult women in the U.S. is normally distributed, with a mean height of 64 inches and a standard deviation of 3 inches. With this in mind, answer the following: a) The shortest 10% of women are shorter than what height? b) The middle 75% of all women are between ...
*September 28, 2009 by CM*

**math**

the formula for potential energy is p=mgh, where p is potential energy, m is mass, g is gravity, and h is height. what expression can be used to represent g?
*May 30, 2008 by derek*

**Algebra**

A cylindrical can has a volume of 5625π cubic centimeters. Its height is 25 centimeters. What is the radius of the can? Use the formula V=πr^2h
*May 8, 2014 by michael*

**Geometry**

The Great Pyramid of Cheops in Giza, Egypt, was completed around 2566 B.C.E. Its original height was 482 ft. Each face of the pyramid forms a 52 degree angle with the ground. To the nearest foot, how long is the base of the pyramid?
*January 13, 2012 by Anonymous*

**physcis**

A 100.0 kg base runner begins his slide into second base when he is moving at a speed of 4.70 m/s. The coefficient of friction between his clothes and Earth is 0.550. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to...
*October 10, 2012 by Anonymous*

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