Sunday

May 24, 2015

May 24, 2015

Number of results: 104,409

**Maths**

An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...
*April 30, 2013 by MAths lover Please Helppppp*

**Geometry**

Which is the hypotenuse-leg theorem? A. If the hypotenuse and one leg of a right triangle are similar to the corresponding parts of another right triangle, then the triangles are congruent. B. If the hypotenuse is congruent to the corresponding part of another right triangle, ...
*June 29, 2010 by Superman*

**Math :-)**

Explain why knowing the height is needed when finding the perimeter of a right triangle.
*February 9, 2014 by anon*

**algebra**

what is the height of a solid with a volume of 120 m3 and a base of 30 m2
*October 27, 2010 by rae*

**math**

Base is 16 cm squared, Width is 2.5 cm. what is the perimeter and height
*January 13, 2013 by donna*

**math**

A conical funnel has a base diameter of 4 cm and a height of 5 cm
*May 1, 2013 by jerry*

**Congruence-creating a triangle**

Three segments are given. I need to draw one segment with the same length as any one of the given segments. Then take the measure of another given segment with my compass and draw a cirlce of that radius from the endpoint of my first segment. The question is: 1. What is true ...
*November 4, 2006 by Jen*

**Precalculus**

There is a piece of wire 200 cm long. It needs to be cut into 2 pieces, with one piece forming an equilateral triangle and the other piece forming a circle. How long must each piece be to maximize the area of each shape?
*September 4, 2010 by Ce*

**geometry**

The coordinates of triangle ABC areA(0,0), B(2,6), and C(4,2). Using coordinates geometry; prove that, if the midpoints of sides AB and AC are joined, the segment formed is parallel to the third side and equal to one- half the length of the third side.
*February 6, 2012 by Sindy*

**geometry**

The coordinates of triangle ABC areA(0,0), B(2,6), and C(4,2). Using coordinates geometry; prove that, if the midpoints of sides AB and AC are joined, the segment formed is parallel to the third side and equal to one- half the length of the third side.
*February 6, 2012 by Sindy*

**Chemistry(Please check)**

1) Which statement below is correct (true)? a) Since HNO2 is a stronger acid than HF it must have a greater pKa. b) Since HOCℓ is a stronger acid than HCN, then OCℓ– is a stronger base than CN–. c) The dissociation (or ionization) of HOCℓ in water is HOC&#...
*March 24, 2012 by Hannah*

**math**

The height of a projectile fired upward is given by the formula s = v0t − 16t2, where s is the height in feet, v0 is the initial velocity, and t is the time in seconds. Find the time for a projectile to reach a height of 96 ft if it has an initial velocity of 128 ft/s. ...
*July 11, 2011 by sabrina*

**Math**

The four bases of a baseball diamond form a square 90 feet on a side. The shortstop,S, is in a position that is 50 feet from second bases and forms a 15 degree angle with the base path as shown. Find the distance between the shortstop and first base to the nearest foot
*April 11, 2010 by Joline*

**geometry**

1. A triangle has side lengths of 8, 10, and 12. what kind of triangle is it? 2. A triangle has side lengths of 3, 4, and 7. what kind of triangke is it?
*January 12, 2012 by lacey*

**Calculus Help Please Urgent!!!**

A piece of wire 14 m long is cut into two pieces. One piece is bent into a square and the other is bent into an equilateral triangle. (a) How much wire should be used for the square in order to maximize the total area? 14 m this one I got right (b) How much wire should be used...
*April 18, 2014 by Nane*

**5th grade math**

list at least one way in which an equilateral triangle and isosceles are different? List at least one way in which an equilateral triangle and a isosceles triangle are the same? thank you!
*October 28, 2010 by pat*

**Math Calc**

Given a right triangle ABC with a=13 and b=26, find the value of angle A, angle B, and side length c. Round to the nearest thousandth.
*November 2, 2014 by Johnny*

**Math**

Peter has 1200 yards of fencing to enclose a rectangular area. Find the dimensions of the rectangle that maximize the enclosed area?
*December 4, 2012 by Jane*

**Calculus kinda with the area of two curves**

II don't even know where to start with this can anyone help?!? Find c>0 such that the area of the region enclosed by the parabolas y=x^2-c^2 and y=c^2-x^2 is 270.
*December 2, 2013 by Roni*

**Algebra 1**

Find the measure of the smallest angle of the right triangle. c= 90degree a= height ac= 7 and cb = 11 a-32.5 degree b-57.5 degree c-13.0 degree d-50.5 degree my answer is a 32.5 degrees
*March 29, 2015 by Steve*

**math**

A solid cone of height 12cm and radius 9 cm is recast into a solid sphere. Calculate the surface area of the sphere. cone V= 1/3 pi r^2 h sphere V= 4/3 pi r^3 area of sphere = 4r^2 how to find sphere of radius?
*February 4, 2015 by kudu*

**ALGEBRA 1 HELP**

Your hole punch makes holes in your that have diameter of 4^-1 inch. a.Write an expression for the area of one punched hole. Use the formula for the area of a circle A=:r^2. (: is pi sign) b.Your hole punch makes three holes in a page . Write an expression for the total area ...
*December 5, 2013 by Louis*

**Math**

Triangle ABC is similar to triangle APQ, with angle CBA equal to angle QPA and angle A common to both triangles. The lengths of sides AB, AP and PQ are 90 cm, 60 cm and 30 cm. Calculate the length of side BC.
*June 4, 2010 by Golkhadi nep*

**math**

Gravel is being dumped from a conveyor belt at a rate of 40 cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 22 feet high? Here are ...
*February 27, 2013 by jeremy*

**Applied Programming**

APPLIED PROGRAMMING (APR520S) ASSIGNMENT 1 Problem Solving Tools Total Marks: 50 Marks Due: Friday 22 August 2014 Suppose we want to construct a C/C++ program that can be used to calculate the area or the volume for a range of 2-D and 3-D shapes respectively. Consider only the...
*August 19, 2014 by Pineas*

**maths**

Find the height of a tree when it is found that on walking away from it 20 metres, in horizontal line through its base, the elevation of its top changes from 60 degree to 30 degree.
*January 17, 2010 by srikesh iyer*

**Geometry HELP**

Find the volume of a regular hexagonal prism if the measure of one side of the base is 14 and the height is 10. a.)140âˆš2 cm^3 b.)2940âˆš3 cm^3 c.)140 cm^3 I was thinkin the answer is 140âˆš2 cm^3
*June 10, 2010 by Ariel*

**Calculus**

let a hemisphere of radium 5 be cut by a plane parallel to the base of the hemisphere thus forming a segment of height 2. find its volume using cylindrical shells... thanks
*October 31, 2010 by Oswaldo*

**Geometry**

The scale factor of triangle DEF to triangle HJK is 5/2. If EF =15 find JK EF : JK = 5 : 2 15 : JK = 5 : 2 15 * 2 = JK * 5 30 = 5(JK) 5(JK) / 5 = 30 / 5 JK = 6 Am I CORRECT ON THIS ONE? Looks like EF and JK are corresponding sides of similar triangles. Each side of DEF is 2.5 ...
*June 18, 2007 by DANIELLE*

**college Physics**

Dear Sir, Please help. I am struggling with the below problems for a very long time. thanks Larry King 1) Suppose that in a certain atmospheric situation, a falling raindrop, having an initial mass of 0.010g. collects smaller droplets by collision at such a rate that, after ...
*February 5, 2009 by Larry King*

**Math**

I am in 7th Grade and have some holiday homeworks. Please help. 1. Write all the algebraic identities. 2. Write the statement & proof for remainder theorem & factor theorem each. 3.Write all the quadrilaterals and their properties. 4. Write the formulae for finding the area ...
*May 14, 2008 by Kenneth*

**Chemistry**

How many moles of H2PO4 and HPO4 would be needed to prepare 1.0 L of a 0.01M phosphate buffer with a pH of 6.82? Use the Henderson-Hasselbalch equation. pH = pKa + log (base)/(acid). Thank you, but I guess what my question should have been is what is the acid in this question ...
*September 5, 2012 by Daniel*

**Math**

1. Find the area of a segment of height 22.1 inches in a circle of radius 6.42 ft. Draw a rough sketch of a circle showing the height and radius. Consider significant digits.
*January 21, 2013 by Prince*

**mathematics**

An equilateral triangle with side length 33 is divided into 332 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...
*April 30, 2013 by Sambaran G.*

**Physics**

dear Sir, I have some questions based on proportional reasoning and I hope you can help me thanks Larry king 1.5 Suppose that in a certain atmospheric situation, a falling raindrop, having an initial mass of 0.010g. collects smaller droplets by collision at such a rate that, ...
*February 4, 2009 by Larry King*

**Geometry**

I have two post that meet the ground perpendicular and the ground is level. One post is 40 feet high, the other is 25 feet high. If I draw a hypotenuse from the top of one post to the base of the other post and another hypotenuse from the top of the other post to the base of ...
*July 9, 2013 by Josh*

**math**

which of the triangles described in the table is a right triangle? triangle side 1 side 2 side 3 Q 25 20 15 R 26 20 46 S 25 20 1025 T 25 26 650
*May 4, 2015 by Amanda *

**math**

The legs of a right triangle are 3 and 4 units long. Find the lengths, to the nearest tenth, of the segments into which the bisector of the right angle divides the hypotenuse. (Hint: Draw a picture of the triangle, label one segment of the hypotenuse "x," and solve. Then, move...
*June 8, 2012 by molly*

**trig**

Solve the triangle given the information:a=3, b=4, ã=40°
*February 16, 2010 by anonymous*

**Trigonometry**

Solve for the ambiguous triangle. 1. Given: A=45°; a=3; b=5 2. A=25°; a=3; b=6
*November 19, 2012 by Jezrell*

**Geometry**

What is the value of x, given PQ || BC? Triangle: A, B, C with bisector PQ AP = 8 PB = x AQ = 12 QC = 18
*February 12, 2015 by Anonymous*

**chemistry**

Write the balanced net ionic equation for the following reaction and determine the conjugate acid-base pairs. HNO3(aq)+Li2CO3(aq)<--->LiNo3(aq)+LiHCO3(aq) Which component in the net ionic equation is the acid, the base, the conjugate base, and the conjugate acid Thank you
*April 29, 2015 by kim*

**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 ...
*June 5, 2012 by Amber *

**math**

Determine whether the following argument is correct. If it's not correct, explain what is wrong with ther 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...
*December 11, 2012 by kai*

**math**

a tank is in the shape of a triangular prism. If the triangular base has an area of 116 square feet, and the tank is 30 feet tall, how much water would the tank contain when it is full?
*February 13, 2011 by Anonymous*

**Word Problem**

A grander want to create a triangular garden in the shape of a right triangle with shortest side length x-6y ft. and the middle length side x + 6y ft. what is an algebraic expression for the area of the garden? Be sure to multiply this out and express in simplest correct ...
*March 15, 2011 by Miguel*

**Intermediate Algebra**

A gardner wants to create a triangular garden in the shape of a right triangle with shaortest side length x-8y ft and the middle length side x+6y ft. What is an algebraic expression for the area of the garden? Be sure to multiply this out and express in simplist correct ...
*June 8, 2012 by ladybug*

**Math**

1. Write the ratio in the simplest form. 50: 10 (1 point) 25: 5 10: 2 5: 1* 1: 5 2. Solve the following proportion x over 2 = 8 over 9 (1 point) 144 0.44 1.78* 36 3. Sarah’s mother has a miniature village modeled after her home town. The model is 10 feet long and 7 feet wide. ...
*January 15, 2014 by anonymous*

**Math **

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*

**Calculus**

Find the area between the curve y=4/x and the x-axis from x=1 to x=e. It is a review question for my final exam and I am really stuck on how to solve You should hope for a final exam question so easy. area= INT y dx= INT 4/x dx from 1 to e area= 4ln x from 1 to e
*April 29, 2007 by Evan*

**Chemistry(Please check)**

1) Which of the following is not amphiprotic? H20, NH4^+^, HSO4^-^, H2PO4^-^, all choices are amphiprotic. I think that all of these are amphiprotic. I know for sure that H20 and H2PO4^-^ are. 2) The ion HPO4^-^ has both a conjugate base as well as a conjugate acid. The ...
*March 24, 2012 by Hannah*

**math**

1. A baseball diamond is actually a square, 90 feet on each side. What is the distance from third base to first base? 2. The equation gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet. a) Solve this equation for h b) Mammoth ...
*August 30, 2010 by summer*

**math**

1. A baseball diamond is actually a square, 90 feet on each side. What is the distance from third base to first base? 2. The equation gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet. a) Solve this equation for h b) Mammoth ...
*September 4, 2010 by summer*

**Calculus**

How do you prove area of a circle? Integrate an incremental area dArea = r dr dTheta from r=0 to R, and Theta from zero to 2PI radians. Area= INT INT dTheta rdr dTheta Area= 2PI (1/2 R^2)= PI R^2
*March 1, 2007 by Abigail*

**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*

**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*

**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*

**area of circle**

The radius of a circle is 8ft. I have 60ft of tile. Is this enough to cover circle. Do you mean you have 60 SQUARE feet of tile? The circle's area is much more than that. How would you find he angle to a circle if half of it is 12 in. ??? and how owuld you find the area of a ...
*March 5, 2007 by jodie*

**MATH ONE QUESTION!**

The student council is making six right triangular pennants to promote school spirit. Each right triangle is 9 inches high and 2 feet long. In square feet, what is the total area of six pennants.
*May 5, 2015 by Anonymous*

**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*

**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*

**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*

**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*

**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*

**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*

**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 *

**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*

**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*

**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*

**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*

**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*

**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**

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**

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*

**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**

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*