Thursday

July 31, 2014

July 31, 2014

Number of results: 27,992

**Math**

If an observer stands at a certain point in the same horizontal plane as the base of a radio tower. the angle of elevation of the top of the tower is 13deg 15'. If the observer moves 156.25 feet towards the tower, the angle of elevation is 18deg 10'. Find the height of the tower.
*February 17, 2014 by McKenna Louise*

**geometry**

Find the surface area of a rectangular prism with a length of 8 inches, a width of 5 inches and a height of 2 inches. so far this is what I have- (2(8)+2(5))2=72 + 2(8.5)=80 my answer is 152in^2 the books answer is 132in^2 What did I do wrong???? Thanks for the help!
*April 18, 2011 by mary*

**geometry**

The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR.
*April 12, 2010 by sally*

**geometry**

The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (a) Find the area of triangle PQR. (b) Find the length of the projection of segment PQ onto segment PR. (c) Find the length of segment QR.
*April 15, 2010 by sarah a*

**Math**

The question is: Determine the surface area and volume of this cylinder, correct to one decimal point. The cylinder has a radius of 4 inches and the height is 3 yards. This site explains how to find the surface area and volume of a cylinder. http://id.mind.net/~zona/mmts/...
*June 15, 2006 by Robin*

**math**

Two angles of a triangle have the same measure and the third one is 15 degrees greater than the measure of each of the other two. Find the measure of the LARGEST angle in the triangle.
*February 1, 2009 by cindy55*

**math-geometry**

The length of the hypotenuse of a right triangle equals the length of one of the legs of the triangle. a.) Always true b.) Sometimes true c.) Never true I for A for the answer is that correct?
*April 16, 2010 by nicole*

**algebra **

A triangle has side lengths of 5 inches, 12 inches, and 15 inches. Every dimension is multiplied by 1/5 to form a new triangle. How is the ratio of the perimeters related to the ratio of corresponding sides?
*October 6, 2010 by Anonymous*

**geometry**

I am really stuck on a couple of these. 2 column proof Given: FH is congruent to GE and angle HFG is congruent to angle EGF Prove: triangle GEH is congruent with triangle FHE.
*December 29, 2012 by linda*

**math**

I am really stuck on a couple of these. 2 column proof Given: FH is congruent to GE and angle HFG is congruent to angle EGF Prove: triangle GEH is congruent with triangle FHE.
*December 29, 2012 by linda*

**Trig**

In triangle ABC, A=35 degrees, a=43, and c=20. Determine whether ABC has no solution, one solution, or two solutions. Then solve the triangle. Round to the nearest tenth. no solution.
*March 7, 2008 by Jon*

**math**

The length of the hypotenuse of a right triangle is 2 times the length of one of the legs of the triangle. answer choice: a.Always true b. sometimes true c. never true
*April 16, 2010 by nicole*

**algebra**

a rectangle is 4 times as long as it is wide. a second triangle is 5 centimeters longer and 2 centimeters wider than the first. the area of the second rectangle is 270 square centimeters greather than the first. what are the dimensions of the original rectangle? how would i ...
*June 3, 2008 by sabrina*

**Calculus 3**

The ceiling of a building has a height above the floor given by z = 20 + 1 4 x, and one of the walls follows a path modeled by y = x3/2. Find the surface area of the wall if 0 ≤ x ≤ 40. (All measurements are in feet. Round your answer to two decimal places.)
*May 1, 2011 by Baba*

**math**

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

**math**

what are inverse operations,ratios and proportions what is the formula to find the area of a cone, rectangular prism ,triangular prism, cylinderpyramid square pyramid They all have the same formula: Volume= 1/3 areabase*height
*June 9, 2007 by ahmed*

**bio physics**

A 2.80kg block of copper with a height of 0.250m and an area of 1.26 X 10^2 is floating in a tub of liquid mercury. How far from the surface of the mercury is the bottom of the block? Hint: you need to start with Newton's second law
*April 24, 2013 by Anonymous*

**Business Calcules**

find a rectangular contains at least 231 cubic inches.the height of the box must be exactly 1/4th of the width of the box. the box is closed on all 6 sides. the surface area of the box minimized.?
*March 23, 2014 by jasmine*

**Fluid Mechanics**

A closed tank, rectangular in plan with vertical sides, is 1.8m deep and contains water to a depth of 1.2m. The enclosed space above the water is pressurized with air up to 35kPa. If the length of one wall of the tank is 3m, determine the resultant force on this wall and the ...
*October 31, 2010 by Claire*

**CALCULUS 2**

Use calculus to find the volume of the following solid S: The base of S is an elliptical region with boundary curve 9x^2+4y^2=36. Cross-sections perpendicular to the x-axis are isosceles right triangles with hypotenuse in the base.
*February 4, 2014 by ADELINE*

**Math**

Log base 10 of 9 = 0.95. Log base 10 of 2 = 0.30. Find log base 10 of (20/9)
*June 8, 2011 by Denny*

**algebra**

A ladder is resting against a wall. The top of the ladder touches the wall at a height of 15 feet and the length of the ladder is one foot more than twice the distance from the wall. Find the distance from the wall to the bottom of the ladder. (Hint: Use the Pythagorean ...
*April 2, 2008 by astrid*

**Physics**

Suppose there is a small hole (radius=0.0203) at the base of a large tank. If the height of water in the tank is 15m (a) what is the speed of water escaping through the hole? (b) Calculate the amount of water (in cubic meters per second) escaping the tank.
*November 27, 2012 by Jamie*

**maths**

A water tank has the shape of a rectangular prism of base 50 cm2. This tank is being filled at the rate of 12 liters per minutes. Find the rate at which the height of the water in the water tank increases; express your answer in millimeters per second.
*February 3, 2014 by LARA*

**Algebra 2**

I am trying to find the inverse of these functions. Can someone please check my answers and tell me how to do number 2? 1. y=7^x y=log base 7 x 2. y=log base 1/2 x 3. y=2^(x)-3 y=2^(x+3) 4.y=6+log x
*December 5, 2013 by Jane *

**SRA Math**

The rectangular region shown has been divided into nine square regions, all different in size. The area of square 3 is 64 cm. The area of square 5 is 81cm. what is the area of the rectangle?
*November 1, 2011 by Fatimah*

**Algebra**

A ball is thrown into the air with an upward velocity of 28 ft/s. Its height (h) in feet after t seconds is given by the function h = 16t + 28t + 7. How long does it take the ball to reach its maximum height? What is the balls maximum height? Round to the nearest hundredth...
*March 11, 2013 by Cassie*

**Chemistry**

I am predicting acid-base equilibria using the Brondsted-Lowry predictions. I am asked to do "solid aluminum sulfate added to water". So I know there is an Al^2+ ion and a SO4^-2 ion, but does water dissociate into H30^+ and OH^-? If so, then H30^+ and OH^- would be the ...
*May 7, 2010 by Stuck*

**algebra**

a stone is thrown up from a height of 30 ft. The initial velocity is 60 ft/sec. If s(t)= -16t^2+60t+30. Find the time at which the stone riches its maximum height and find the maximum height
*November 8, 2012 by Anonymous*

**math**

The height in feet of a rocket after t seconds is given by h(t) = 160t - 16t2. Find the maximum height the rocket attains: After how many seconds does it reach this height?
*July 8, 2013 by lisa*

**math**

From 70 feet away from the base of a tree on level ground, the angle to the top of a tree is 60⁰. What is the height of the tree? What is the approximate distance from the vantage point to the top of the tree, to one decimal point? (Assume that the tree is perpendicular ...
*June 12, 2013 by D*

**Geometry**

If the length of one base of a trapezoid is 5, the length of the other base is 2x + 7, and the length of the midsegment is 6x 24, what is the value of x? Show equations and all work that leads to your answer.
*January 22, 2010 by Alyssa*

**geometry**

the longer base of an isosceles trapezoid is 14 feet. the nonparallel sides are each 10 feet long and the length of diagonal is 16 feet. find the measure of a base angle
*November 15, 2011 by Anonymous*

**4 CALCULUS study problem**

1. How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dV/dt, the change in volume with respect to time, which is 15 cubic centimeters per second. The rate we want to find is dr/...
*January 9, 2014 by Samantha*

**math**

a rectangle is twice as long as it is wide. if both of its dimensions are increased by 4m, its area is increased by 88m^2 find the dimensions of the original rectangle Original rectangle = w for width and 2w for length. Area = w x 2w Larger rectangle = w+4 for width and 2w+4 ...
*November 29, 2006 by samantha*

**Math**

1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute <H and the shorter diagonal. 3.Scalene right triangle SCA with midpointsL<M and N on SC, CA, and SA, respecitively. 4.Trapeoziod TRAP with TR|| A[, RE PA and P,E and A collinear 5.KIte KITE ...
*April 18, 2011 by ashely*

**Physics (vectors)**

I am stuck with this question.Please help. I have a triangle that is not a right triangle with sides A, B, and C.(no values).The arrow's heads of A and B are joined and the arrow's head of C is in the tail of B. If the resultant is A,what is the vector equation, and what is ...
*February 15, 2013 by Kathy*

**Math!!**

A square quilt for a child's bed has a border made up of 32 pieces with an area of x each, and 4 small squares with an area of 1 square inch each. The main part of the quilt is made of 64 squares with an area of x squared each. If the quilt is 4 ft by 4 ft, what are the ...
*November 6, 2006 by Marissa*

**math**

i posted this can you explain to me how to do this question i know i have to use differential equations but im not sure how to form an equation for inversely proportional question states grain is being poured at a steady rate to form a pile with height h, the rate at which the...
*February 1, 2010 by lucy*

**math**

i posted this can you explain to me how to do this question i know i have to use differential equations but im not sure how to form an equation for inversely proportional question states grain is being poured at a steady rate to form a pile with height h, the rate at which the...
*February 2, 2010 by lucy*

**Physics**

You can use any coordinate system you like in order to solve a projectile motion problem. To demonstrate the truth of this statement, consider a ball thrown off the top of a building with a velocity v at an angle with respect to the horizontal. Let the building be 50.0 m ...
*August 30, 2009 by Annmay*

**math**

the base of a cylindrical juice container is a circle with diameter 20 cm. The height of the container is 80cm. What is the capacity of the juice container? show your work. b) The juice container will be filled to 90% of its capacity. What will be the volume of juice in the ...
*November 10, 2008 by sidlord*

**Physics **

A man is standing on a cliff and throws a ball outward 50m/s at an angle of 53 degrees. It hits the base of the cliff in 10 seconds. Find: a) The height of the cliff b) the angle at which the ball goes into the sea c) if the ball will hit a boat 150m out to sea.
*March 12, 2013 by Sam*

**calculus**

please help if you can At a sand & gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. The diameter of the base of the cone is approximately three times the altitude. At what rate is the height of the pile changing when ...
*October 14, 2010 by kim*

**math**

A sector of a circle subtending an angle 300 degrees at the centre is used to form a cone with base radius 6cm. Find the (a.)radius of the circle (b.)volume of the cone (c.)area of the minor sector of the circle
*April 30, 2014 by shegster*

**math**

Please show all of your work in the space below. Please present and organized and complete solution. A garden will be made up of a parallelogram, a rectangle and a triangle. The garden must have an area of 500m square. Draw two possible gardens. Determine the dimensions of ...
*November 22, 2013 by jhon*

**Math**

#4. 1. the mystery shape has at least 2 congruent sides. 2. it has fewer than 2 obtuse angles. 3. it has more than 1 line of symmetry. 4. it has at least 1 acute angle. A. equilateral triangle B. trapezoid C. square D. lsosceles right triangle E. parallelogram F. scalene ...
*March 22, 2011 by Rayna*

**Precalc/Triangles**

Draw and solve any triangles satisfying alpha = 29 degrees a = 7 c = 14 I realize I need to draw a non-right triangle and label the sides but I am completely confused one what to do after I draw the triangle
*November 13, 2012 by Greg*

**Math**

If two sides of a triangle are proportional to the corresponding sides of another triangle, then the triangles are similar. Is this Always True, Sometimes True, or Never True?
*October 12, 2009 by Chris*

**Math**

Classify triangle ABC by its sides if side AB = 6x, side AC = 4x + 6 and side BC = 8x + 3. The perimeter of triangle ABC is 63. Show all your work. Explain your reasoning.
*November 8, 2011 by Chris*

**Calculus**

I actually have two questions: 4. An open box is to be made from a rectangular piece of material 3m by 2m by cutting a congruent square from each corner and folding up the sides. What are the dimensions of the box of the largest volume made this way, and what is the volume? 5...
*May 18, 2010 by Anonymous*

**Physics**

A boy stands on the edge of a building 7 meters high and throws a rock at 60-degree angle. The release point from his hand is 1.6 meters above his feet(so the release point above the ground is 8.6 meters.) The rock lands on the ground 15 meters away from the building at a ...
*November 21, 2008 by Anonymous*

**science**

An object is dropped off of a 27 meter tall building. How long is it in the air before it hits the ground? To measure the height of a tree, a person throws a ball vertically upward, and takes 13 seconds to reach its maximum height which is exactly the height of the tree. How ...
*February 5, 2012 by Anonymous*

**geometry**

Triangle NQP is an equilateral triangle with the measure of angle N=5x-2y and the measure of angle P=x+2y. Find the values of x and y.
*November 7, 2008 by Hannah*

**math**

Triangle I has sides with lengths 2 2/3 cm, 4 1/2 cm and 3 cm. Triangle II has sides with lengths 8 cm, 13 1/2 cm and 9 cm. Are these triangles similar? If yes, what is the ratio of correspondence?
*April 28, 2010 by hola*

**Geometry **

Triangle I has sides with lengths 2 2/3 cm, 4 1/2 cm and 3 cm. Triangle II has sides with lengths 8 cm, 13 1/2 cm and 9 cm. Are these triangles similar? If yes, what is the ratio of correspondence? A.)Yes;1/3 B.)No C.)Yes;2/3
*July 14, 2012 by kiki*

**math**

Write a sequence of transformations that maps triangle ABC onto triangle A''B''C''. -------------------------------------- A in ABC is 1,9, B in ABC is 3,12, and C in ABC is 4,4. A'' in A''B''C'' is 3,-3, B'' in A''B''C'' is 5,-6, and C'' in A''B''C'' is 6,2.
*January 23, 2013 by kayla*

**Geometry -8th gr**

Given: triangle ABC ~ triangle PQR, m<A = 75 degrees, m<P = (5x + 7y) degrees, m<R = (3x + 4y) degrees, and m<B =( 2x + 9y) degrees. FInd m<R. Thanks
*February 1, 2013 by Mona*

**math**

Triangle GHI is an isosceles triangle. H is the vertex. If the measure of H is 73 degrees what is the measure of G? A.73 B.17 C.34 D.104 A)73 degrees?
*February 26, 2013 by Lance*

**math**

find tan 30 degrees and tan 45 degrees using the 45-45-90 triangle therom and 30-60-90 triangle theorm
*March 25, 2013 by joan*

**Math HELP**

A 306090 triangle has a hypotenuse with a length of 18. What is the length of the shorter leg of the triangle? A.5 B.5 sqrt 3 C.5 sqrt 2 D.20 Don't understand.
*February 14, 2014 by dark1 *

**math please help**

i posted this can you explain to me how to do this question i know i have to use differential equations but im not sure how to form an equation for inversely proportional question states grain is being poured at a steady rate to form a pile with height h, the rate at which the...
*February 2, 2010 by lucy*

**Chemistry**

I am stumped on this one...Please help!!! Write a balanced base ionization reaction for methylamine (CH3NH2) in water. Identify all species as acids and bases and identify the conjuate acid-base pairs.
*November 19, 2011 by Nathan*

**MAths algebra**

Consecutive bases of a square shaped baseball diamond are 90 feet apart .Find to the nearest tength of a foot the distance from first base diagonally across the diamond to third base
*April 2, 2013 by Firdous*

**Chemistry**

If the Kb of a weak base is 1.5 10^-6, what is the pH of a 0.25 M solution of this base? I found that I need to use the quadratic equation but I'm having difficulties because I come up with taking the square root by zero and that isn't right. Please help! a=1, b=1.5x10^-6, c...
*April 14, 2013 by Leah*

**PLEASE HELP TANGENTS AND CIRCLES PROBLEM GEOMETRY**

PLEASE HELP I REALLY NEED HELP. Each of the three circles in the figure below is externally tangent to the other two, and each side of the triangle is tangent to two of the circles. If each circle has radius three, then find the perimeter of the triangle. The figure is ...
*February 2, 2013 by Knights*

**geometry**

In trapezoid ABCD, if the base DC = 16 and the base AB = 20 and E is the midpoint of AD and F is the midpoint of BC, what is the measure of EF?
*June 11, 2012 by Anonymous*

**Math**

What are the base-five numbers for the base-ten counting numbers 1 to 26?
*October 8, 2012 by Connor*

**maths**

Solve this logarithmic equation. 3 log 2 base x + log 18 base x = 2
*May 8, 2013 by Shane*

**maths**

Solve this logarithmic equation. 3 log 2 base x + log 18 base x = 2
*May 8, 2013 by Shane*

**chemisty**

600 mL of an unknown monoprotic acid was titrated with a standard solution of a 1.0 M base. If it took 40.0 mL of the base to neutralize the acid, what was the H+ ion concentration of the acid in moles per Liter?
*December 14, 2010 by ana*

**geometry/trigonometry**

Triangle ABC is similar to triangle APQ with angle CBA equal to angle QPA and angle A common to both triangles. the length of sides AB, AP and PQ are 90cm,60cm and 30 cm. calculate the length of the side BC
*June 20, 2010 by lee pearce*

**Geometry**

One side of a triangle is x inches longer than another side. The ray bisecting the angle formed by these sides divides the opposite side into 3- inch and 5-inch segments. Find the perimeter of the triangle in terms of x.
*January 13, 2012 by Anonymous*

**Geometry**

In ^DEF, the bisector of <F divides the opposite sides into segments that are 4 and 9in long. The side of the triangle adjacent to the 4 in. segment is 6in long. To the nearest tenth of an inch, how long is the third side of the triangle?
*February 21, 2012 by Myles*

**geometry **

could you answer the question? Baes are isosceles trapeziods with parallel sides that measure 15 cm. and 25 cm. the distance between the parallel sides is 12cm. and the length of each of the equal sides is 13cm. the height of the prism is 20 cm. what is the surface area?
*March 18, 2012 by lola *

**Math**

5. Find the surface area of the cylinder to the nearest whole number. (1 point)1,659 in.2 898 in.2 5,862 in.2 2,959 in.2 6. Find the surface area of the pyramid shown to the nearest whole number. (1 point)1,540 m2 770 m2 396 m2 749 m2 7. Find the surface area of a conical ...
*May 17, 2014 by Anonymous*

**Algebra!**

4. A ball is thrown into the air with an initial upward velocity of 60 ft/s. Its height (h) in feet after t seconds is given by the function h = 16t + 60t + 6. What will the height be at t = 3 seconds? (1 point) 35 feet 40 feet 42 feet 45 feet 5. Solve x 121 = 0 (1 point...
*March 20, 2014 by Gabby*

**Math**

The shortest side of a right angled triangle is 7cm less than the second shortest side. The sum of the squares of these two sides is equal to 289cm^2. The perimeter of the triangle in cm is? I dont get how to do this, I think Im meant to use a quadratic equation to solve.
*December 7, 2011 by -Untamed-*

**Geometry**

Given a triangle ABC with A(6b,6c) B(0,0) and C (6a,0), prove that the medians of the triangle are concurrent at a point that is two thirds of the way from any vertex to the midpoint of the opposite side. I'm not sure how to prove this. I tried and when I got to finding the ...
*October 24, 2013 by Cecilia*

**math**

if log x base a,log y base a and log z base a are three consecutive terms of an AP,show that x,y and z are consecutive terms of a GP
*February 16, 2013 by jessica*

**Clac- math**

a 20 foot ladder leaning up against a vertical wall begins to slip. the base of the ladder makes an acute angle with the floor. when the angle equals 60 degrees the angle is decreasing at 0.1 radians/second. find the rate at which the height of th upper end of the ladder is ...
*March 1, 2012 by Nikki*

**Math**

A kaleidoscope is a tube-shaped instrument that contains mirror and colored glass. When a viewer looks in one end, (s)he sees vibrant, changing patterns. Tami sees a kaleidoscope in the shape of triangular prism. It has a height of 4 inches, a base of 5 inches and a depth of 8...
*March 18, 2014 by Zack*

**math-optimal diameterand height**

A cylindrical oil-storage tank is to be constructed for which the following costs apply: cost per square meter metal for ides $30.00 combined costs of concrete base and metal bottom $37.50(cost per square meter) top 7.50 (cost per square meter) The tank is to be constructed ...
*November 18, 2010 by Alicia*

**Chemistry**

What is the stronger base, OH^- or CH30^-? I've been told the answer is the conjugate base of methanol ion but i beg to differ. THe respective pKa's of water and methanol (the conjugate acids) are 15.7 and 15.5. This would imply that out of water and methanol, methanol is the ...
*December 22, 2007 by Vic*

**Math**

How many cubic centimeters of ice cream can an ice cream cone (within the cone) hold if its height is 7 centimeters and the diameter of its base is 4 centimeters? Give solution accurate to the nearest hundredth. Include correct units with your solution
*May 11, 2011 by Geena*

**business law**

A church owned land in rurual area that was used for a recreation area for disabled children. Fire destroyed vegetation in the area, allowing flooding to occur. To protect public safety, the county adopted an ordinance prohibiting any new building in the area until it ...
*February 9, 2012 by shirley*

**geometry**

If the area of a trapezoid is 209 square yards and the bases are 15 yards and 23 yards. What is the height of the trapezoid?
*November 28, 2011 by Angel*

**calculus**

A box with a square base and an open top is to have a volume of 68in^3 . Neglect the thickness of the material used to make the box, and find the dimensions of the box that would minimize the amount of material used. The width and length of the box are each ___ in. The height ...
*March 30, 2010 by Haley*

**Physics **

A tank of water sits at the edge of a table of height 1.4 m. The tank springs a very small leak at its base, and water sprays out a distance of 1.2 m from the edge of the table. What is the water level h in the tank? (Assume the tank is open to the air at the top.)
*July 25, 2012 by Sierra*

**geometry**

In the diagram, circle A is tangent to circle C, and segment BE is tangent to circle A. The radius of circle A is 11 meters and the radius of circle C is 8 meters. Find the area of triangle ABE to the nearest square meter.
*April 4, 2013 by joe*

**physics**

A ladder can fall for two reasons. If it is set too steep and the climber gets their mass to the left of the ladder's base, the ladder likely will fall over backwards. If the ladder is set at too shallow of an angle the required force of friction between the ladder and the ...
*March 31, 2014 by joe*

**Related rates,...again**

I also have another question (I'm not doing too good one these realted rates). A camera, located 2 km from the launch pad, is tracking the rocket that is fired straight up. When the height of the rocket is 20 km, the camera is rotating at the rate of 1/200 radians per second. ...
*November 2, 2006 by Tracy*

**Plane Trigonometry**

A segment of height 3 meters from the center of chord to center of arc has an arc of 1/3 radians. Find the area of the segment.
*January 17, 2013 by Sunshine*

**geology**

1. What fraction of the Earth is made up of each of the major compositional layers: core, mantle, and crust? 2. What cities lie the same distance from our town as the boundaries of the following layers in the Earth lie from the solid surface? a.Base of oceanic crust or top of ...
*September 3, 2008 by student01*

**Math 2**

Use the diagram to find the surface area of a triangular prism. Find the area of the two triangular faces. Then find the area of each of the three rectangular faces. What is the surface area? Describe how you solved the problem. Prism has numbers of 4, 3, 6 and 5. And teacher ...
*April 3, 2014 by Jenny 2*

**math**

the triangular sail on a sailboat has a base of 4 feet and height of 6 feet. aubrey will paint the sail using a special white paint. a can of this paint covers 10 square feet. how many cans of white paint will she need
*March 21, 2013 by Anonymous*

**Chemistry**

Write a net ionic equation that represents the reaction: 1. ionization of HCl3 in water: My answer: HClO3+H20->H3O+ClO3 2. NH3 functioning as an Arrhenius base: Mine: NH3+(OH)->NH4+O The first one is ok but you need to show the + charge on the H3O^+ and the - charge on ...
*February 15, 2007 by Liz*

**physics**

Given that the side of the square has a length b-a, find the area of one of the four triangles and the area of the small inner square. Give the area of one of the triangles followed by the area of the small inner square separated by a comma. Express your answers in terms of ...
*September 2, 2011 by Eli*

**math**

The perimeter of a triangle is 26 c,. Side a of the triangle is 3 cm longer than side b. Side c is 1 cm shorter than twice side b. Find the length of each side.
*February 4, 2010 by sara*

**Geometry **

find the surface area of a right cylinder with a diameter of 4cm and a height of 6cm. Round to the nearest hundredth. Book answer is 100.53cm^2 I came up with 150.79cm^2 my work: 2rr(4)6)=150.79cm^2 What did I do wrong??
*April 18, 2011 by mary*

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