Wednesday

January 18, 2017
Number of results: 123,596

**math/algebra**

1) The length of one of the equal legs of an isisceles triangle is 8cm less than 4 time the length of the base. If the perimeter is 29 cm, find the length of one of the equal legs. a) 4 cm B) 5 cm C) 11 cm d) 12 cm 2) The perimeter of a rectangle is to be no greater than 300 ...

*June 14, 2007 by Diana*

**For -Ms Sue**

Claim: the lateral (side ) surface of any area of any cylinder can is larger than the circlar surface area of its bottom. Which of the following is an example showing that the claim is false? a. a can with the diameter of 5 inches and height of 10 inches b. a can with diameter...

*May 25, 2011 by Mary *

**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*

**GEOMETRY**

The sides of a triangle are 8,15 and 18 the shortest side of a similar triangle is 10 how long are the other sides? Find the scale factor of similar triangles whose sides are 4,12,20 and 5,15,25 Assume that traingle xyz is similar to triangle rpn with x(ray sign) r and p(ray ...

*November 16, 2013 by BARBIE LEE*

**geometry**

The sides of a triangle are 8,15 and 18 the shortest side of a similar triangle is 10 how long are the other sides? Find the scale factor of similar triangles whose sides are 4,12,20 and 5,15,25 Assume that traingle xyz is similar to triangle rpn with x(ray sign) r and p(ray ...

*November 17, 2013 by barbie lee*

**geometry**

Write a two column proof of the Corollary Triangle Sum Theorem. The acute angles of a right triangle are complementary. m<A + m<B=90degrees

*October 23, 2006 by Steve*

**Math**

(1) Which of the following ingegers can not represent the lengths of the sides of a triangle? (9,10,11) (4.7,9) (4,8,12) & (6,6,11) (2) The measures of two supplementary angles are in the ratio 5:1. What is the measure of the smaller triangle?

*February 23, 2007 by Peggy*

**math**

The length of each side of a triangle is an even number. If no two of the sides are equal, what is the smallest perimeter the triangle coul d have? ans-18

*November 2, 2010 by dhiraj*

**physics**

An equilateral triangle with sides 2 m each has a charge of 30 μC at each of its three corners. Determine the electric field at a point 5 m above the center of the triangle.

*January 24, 2012 by Anuj*

**math**

which shape will create tessellation using only translations? A. scalene triangle B. regular hexagon C. equilateral triangle D. isosceles trapezoid

*April 2, 2013 by andrea*

**E& M physics**

Three electrons form an equilateral triangle 0.600 nm on each side. A proton is at the center of the triangle. What is the potential energy of this group of charges?

*October 2, 2015 by Master Blaster*

**math**

1.the vertices of triangle abc are A(2, -5) B(-3,5) C(3, -3). the trianlge is reflected over the x-axsis. use the arrow notation to discribe the origanal triangle and its reflection.

*March 30, 2016 by Math 7*

**Math**

The areas Of Two Similar Triangle Are 144cm & 81cm . If One Of The First Triangle 6cm, What Is The Legth Of The Correspoding Side Of The Secod?

*May 18, 2016 by Greda 9*

**Math**

Okay so I'm trying to work out how many mm of rain fell in a certain area. I've got the total volume/capacity that fell (3.51125KL) and the total area that it fell in (8558.25m). My formula is Total Rainfall = rainfall mm x area covered How would I make sure that all the ...

*April 23, 2011 by Tatiana*

**math**

The shorter diagonal of a rhombus is 10 inches long, and the angle the diagonal forms with the side measures 60º. Find the area of the rhombus. I really don't know where to start. I know that the area formula for a rhombus is A=1/2*d1*d2 So if I know that one of the D is 10, ...

*April 3, 2007 by Emily*

**chemistry**

A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl. What is the initial of the solution, before any titrant is added? Piperazine,HN(C4H8)NH, is a diprotic weak base used as a corrosion ...

*March 30, 2011 by shae*

**Math - check my answers :)**

1. Find the amplitude, if it exists, and the period of y=tan 1/4È Answer: No limits in amplitude, y=tanÈ/4 period is 4pi 2.Solve x = Arctan(-sqrt3) Work: Pythagorean theorem: sqrt(1^2+3)= sqrt4=2 in length. Triangle is 1, sqrt 3,2 Answer: -60° 3. In triangleABC, A = 35°, a...

*January 30, 2009 by Grace*

**geometry**

Shape is a trapezoid: LINE AC = 12dm LINE FD = 13dm LINE BE = 14dm LINE CG = 10dm This line makes the right angle of the triangle What is the area?

*May 19, 2013 by beck*

**Calc 3**

The actual span of the base of the dome is 143 feet. 1) Use cylindrical coordinates to write the surface of the dome as a function of the distance from the center of the base; that is find z = f (r) . 2) Use your function to find the height of the dome; that is what is f (0...

*December 7, 2009 by joe*

**calculus**

You are planning to close off a corner of the first quadrant with a line segment 20 units long running from (a,0) to (0,b). Show that the area of the triangle enclosed by the segment is largest when a=b. Can anyone please give me some ideas to do it????THANKS A LOT!!

*December 3, 2008 by Toby*

**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 ...

*May 20, 2007 by sarah*

**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 (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*

**Calculus**

Find the area cut off by x+y=3 from xy=2. I have proceeded as under: y=x/2. Substituting this value we get x+x/2=3 Or x+x/2-3=0 Or x^2-3x+2=0 Or (x-1)(x-2)=0, hence x=1 and x=2 are the points of intersection of the curve xy=2 and the line x+y=3. Area under curve above X axis ...

*April 1, 2014 by MS*

**Math help, anyone?**

calculate the slant height for the given square pyramid. Round to the nearest tenth. Pyramid base= 6cm height=5 cm 6.2 cm 5.8 cm 7.8 cm 7.2 cm Calculate the length of the diagonal for the given rectangular prism. Round to the nearest tenth. Length= 10 cm widith= 4cm height= ...

*March 10, 2014 by Princess Anna*

**calculus**

calculate the largest area possible that can be made by a 15 meter long wire that will be bent to form a closed plane area. No figure given

*July 2, 2015 by Jhun*

**math (area&perimeter)**

the demensions of a rectangle are 5y for the height, and 7y-4 for the length. the question i need help with is asking me to simplify the equation for the perimeter and the area of this figure.

*January 23, 2011 by aleasha*

**Math quest 2**

If a triangular sail has a vertical height of 83 ft. And horizontal length of 40 ft, what is the area of the sail? I got area : 3,320ft squared

*February 19, 2013 by Marco*

**math( surface area)**

write a product that represents the surface area of any rectangular prism with length l, width w, and height h. Expain.

*April 3, 2016 by Julia*

**MATH **

Given the indicated parts of triangle ABC with γ = 90°, approximate the remaining parts. (Round your answers for a and c to one decimal place.) β = 51°31', b = 250.0 α = ° ' a = c = Given the indicated parts of triangle ABC with γ = 90°, approximate the...

*September 28, 2011 by STEPHANIE *

**math **

Given the indicated parts of triangle ABC with γ = 90°, approximate the remaining parts. (Round your answers for a and c to one decimal place.) β = 51°31', b = 250.0 α = ° ' a = c = Given the indicated parts of triangle ABC with γ = 90°, approximate the...

*September 28, 2011 by STEPHANIE *

**Physics**

Three charges are arranged in an equilateral triangle with sides of 4 cm. The coordinates and corresponding charge values are as follows: +4q at (-2,0); +2q at (2,0); -q at (0,3.464). The elementary charge of an electron is given by q = -1.602 x 10^-19 C. Determine the torque ...

*May 4, 2011 by Jonny*

**Calculus**

Sand is poured onto a level piece of ground at the rate of 0.25 m^3/min and forms a conical pile whose height is equal to its base diameter. How fast is the height increasing at the instant when the height is 0.50 m? V = 1/3(pi)(r^2)h I got 3/pie, is that correct?

*February 20, 2012 by help*

**Math - Vectors**

Let the points A = (−1, −2, 0), B = (−2, 0, −1), C = (0, −1, −1) be the vertices of a triangle. (a) Write down the vectors u=AB (vector), v=BC(vector) and w=AC(vector) (b) Find a vector n that is orthogonal to both u and v. (c) Find a ...

*May 31, 2016 by Drake*

**Math, Trig/Pre Calc**

You have been asked to build a ramp for Dan’s Daredevil Motorcycle Jump. The dimensions you are given are indicated below. Find the height and incline in feet. Round to the nearest foot One side is 200 ft.The angle between the hypotenuse and the side of 200 ft is 13 degrees...

*October 24, 2014 by Sarah Blanchard*

**geometry easy**

The sides of a triangle are 8,15 and 18 the shortest side of a similar triangle is 10 how long are the other sides? Find the scale factor of similar triangles whose sides are 4,12,20 and 5,15,25 Assume that traingle xyz is similar to triangle rpn with x(ray sign) r and p(ray ...

*November 17, 2013 by barbie lee*

**Calculus, Math word problems.**

A closed box is to be made in the shape of a cubiod, of height h cm and with a square base that has sides of length x cm. Its volume V is required to be 500 cm^3. A) write an expression for the V (volume)in terms of h and x. B)Write an expression for the surface area A in ...

*March 1, 2016 by Mat*

**Calculus: Application of Integration**

Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Draw a typical approximating rectangle and label ts height and width. Then find the area of the region. y=x^2 y^2=x

*October 5, 2010 by Anonymous*

**geometry**

find the surface area of a right prism with the given features: The bases are trapezoids with bases of lengths 6 and 10 perpendicular to one side of the length 12 ; height = 12 Round the answer to the nearest square unit

*October 7, 2010 by Sam*

**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*

**algebra or algebra1**

What is the area of the triangle whose vertices are (−4, 0), (−10, 0) and (−7, −6)

*November 3, 2015 by sue*

**Algebra 2**

Can you please explain step by step on how to do this problem? Condense the expression. 2(log base 6 of 15 - log base 6 of 5) + 1/2 log base 6 of 1/25

*January 19, 2012 by Lynn*

**Algebra 2**

Can you please explain step by step on how to do this problem? Condense the expression. 2(log base 6 of 15 - log base 6 of 5) + 1/2 log base 6 of 1/25

*January 19, 2012 by Lynn*

**math**

A child’s kite is on top of a straight pine tree. A ladder is placed against the tree and touches the kite. The ladder forms a 45-degree angle with the flat ground. The base of the tree is 9 feet away from the base of the ladder. With only this information, how can you ...

*April 19, 2013 by Tom*

**math**

A child’s kite is on top of a straight pine tree. A ladder is placed against the tree and touches the kite. The ladder forms a 45-degree angle with the flat ground. The base of the tree is 9 feet away from the base of the ladder. With only this information, how can you ...

*April 23, 2013 by Anonymous*

**Physics**

Skydiver Joseph Kittinger, record for the longest jump, reaches a terminal speed of 60m/s with his arms and body fully extended. Then, he switches to a head first dive, reducing his cross section area by 80% (that is, his cross section area when head-first is only 20% of his ...

*October 26, 2010 by Gharib*

**geometry**

Jamie needs to find the missing angle of a right triangle with the third angle measuring 62 degrees. What is the measure of the third angle of the triangle?

*February 10, 2015 by Alex*

**calc**

the volume of a cylindrical tin can with a top and a bottom is to be 16*pi cubic inces. if a minimum amont of tin is to be used to construct the can, what must be the height, in inches, of the can? volume of cyliner is pi*r^2*h do i like take derivitive of something since it ...

*December 8, 2006 by david*

**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*

**algebra**

fill in the missing values for a retangular prism. length__________? width 7 height 5 surface area 358 volume __________? Formula SA = 2(LxW) + 2(LxH) + 2(WxH)

*March 28, 2012 by paul*

**algebra**

What is the formula to find the area of a circle?

*March 19, 2013 by syram*

**MATH**

The ratio of two angles of a triangle is 3:2.The remaining angle is the smallest which is half the largest angle of the triangle. What is the measure of smaller angle of a parallelogram if sum of both smaller angles of the triangle is equal to the larger angle of the ...

*September 2, 2015 by MAMTA*

**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*

**Math**

An open top box with a square base has a volume of 30ft^3. The total surface area of the box is? a) S.A=x^2-60/x b) S.A=x^2+60/x c) S.A=x^2-120/x d) S.A=x^2+120/x

*December 28, 2016 by Syndra*

**geometry**

The volume of the rectangular prism is 280 cubic cm. Its base has the area of 40 sq. cm. What is the volume of the pyramid inside the prism???

*September 28, 2014 by Hana*

**geometry**

The volume of the rectangular prism is 280 cubic cm. Its base has the area of 40 sq. cm. What is the volume of the pyramid inside the prism?

*September 28, 2014 by Hana*

**Maths(logarithmic functions)**

solve it: a) 3 log x with base 8 + 2 = 0 b)2 log (x-1)with base 6 =log 4 with base 6

*November 12, 2011 by Kong*

**math**

solve the simultaneous equations; log x base 2-log y base 4=4, log (x-2y)base 2=5

*February 17, 2013 by jessica*

**Algebra2 **

Combine, rewrite & solve: 4 log base 9 of 3 = x log base x of 12 + log base x of 18 = 3

*April 11, 2013 by Anonymous*

**Math**

Without using table....log(base 5) (8/2) + log(base 5) 3(15/2) -log(base 5) (81/8)

*March 6, 2016 by Ruth*

**Pre-calculus**

The area of a triangle wall on a barn is 160 square feet. Its length is 4 feet longer than twice the width. Find the length and width of the wall of the barn

*February 3, 2015 by Tamika*

**math help please **

a plane intersects a right rectangle prism perpendicular to its base .The plane forms cross section.What is the shape of the cross section? a)parallelogram,that is not a rectangle b)triangle,that is not equilateral c)trapezoid d)rectangle

*March 9, 2016 by betty*

**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**

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*

**geometry**

1. Find the area of the parallelogram. (1 point) 3,302 ft2 3,484 ft2 3,752 ft2 4,020 ft2 2. Find the area of the triangle. (1 point) 21.84 cm2 21.2 cm2 10.92 cm2 10.6 cm2 3. Jorge plans to paint a bedroom wall that is shaped like a trapezoid. The bottom edge of the wall is 22....

*March 16, 2013 by Adia*

**math**

i want to find the capacity of a tank in litres which has height 30cm, base 16cm, lenght 17cm and has a thickness of 0.5cm

*March 24, 2011 by chukwunenye*

**Math**

Find the volume of a right circular cone with base diameter 12.0 m and slant height is 10.0m . Round to the nearest whole

*November 24, 2014 by Jeet*

**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*

**algebra1please look over THANK YOU**

Mary is making a pinata that has a ball-like shape. The pinata has a surface area of 50 square feet. Use the formula for the surface area of a sphere: s=4(pi)^2 to find the radius of the pinata. Round your answer to the nearest hundredth. _____ feet i got 50=39.4 but don't ...

*July 3, 2013 by lisa*

**Math**

Find the surface area of the right prism with the given features. The bases are right trapezoids with bases of lengths 8 and 14 perpendicular to one side of length 18; height = 11.

*April 10, 2015 by Suzy*

**calculus**

writing an exponential equation The function gives the value of a home in dollars in the year 1980 + t. Write an equation that can be used to determine the year in which the value of the home reached $100,000? Use ^ to denote an exponent. Do not solve the equation and do not ...

*September 5, 2006 by Joshua*

**Maths**

What is the perimeter formula for an equilateral triangle?

*October 12, 2010 by Jannie*

**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 **

The volumes of two similar figures are given. The surface area of the smaller figure is given. Find the surface area of the larger figure. Smaller figure: V = 2 yd^3 SA = 13 yd^2 Larger figure: V = 250 yd^3 SA = ??? Please help? Thanks

*May 2, 2016 by SkatingDJ*

**Area Geometry**

Find the area of a decagon with a radius of 4mm. Find the area of an octagon with a radius of 10 cm.

*April 10, 2012 by hope*

**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*

**Maths**

A scalene triangle cd also be acute or rat angled or obtuse angle triangle .please say tru e or false Ans according to me is yes

*January 3, 2017 by Aditya*

**Calculus**

A box with a square base and no top is to have a volume of 32 ft3. What dimensions use the least amount of material (in other words what dimensions give minimum outside surface area)?

*May 24, 2015 by Maddie*

**Math**

We want to construct a closed rectangular box whose base has a length three times the width. The surface area has to be 600 cm2. Determine the dimensions of the box that will produce the largest volume.

*December 20, 2016 by R*

**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**

is a triangle with sides 7-7-7 a right triangle

*March 19, 2010 by PAVLEEN*

**math**

can a right triangle be a scalene triangle?

*October 31, 2010 by gmoney*

**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*

**Math**

Sam wants to find the height of a window in a nearby building but it is cloudy. Sam puts a mirror on the ground between himself and the building. He tilts it toward him so that when he is standing up he sees the reflection of the window. The base of the mirror is 1.22 meters ...

*March 10, 2016 by Ashley*

**algebra**

1)Use Pascal's triangle to expand (w-x)^5 2)Use the binomial theorem to find the third term in the expression of (n-2p)^6 3)Which is NOT a counterexample to the formula 1^2+3^2+5^2+...+(2n-1)^2=n(2n+1)/3 A.n=3 B.n=2 C.n=1 D.n=4 is it C thanks:)

*August 23, 2007 by Marissa*

**Science**

Need help with find area of a cylinder measurement are : 1. dia 3cm height 2in 2. dia 3.5cm height 2.5 3. dia 4cm height 3in 4. dia 4.5cm height 5in

*February 21, 2009 by Amanda*

**MAth**

A cone has a base area of 33 in2 and is 8 inches tall. What is the volume of the cone in cubic inches

*July 5, 2012 by Jessica*

**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*

**Math**

I know how to find the surface area of a rectangular prism but, I am not sure when given the coordinates of 4 feet by 6 feet by 8 feet which is which? For example: height, width, length? I don't know which way it goes? Thank You very much for any help you can give me.

*April 27, 2015 by Josh*

**8TH GRADE MATH**

A SOFTBALL DIAMOND IS A SQUARE WITH SIDES OF 60 FT LONG. HOW FAR IS THIRD TO FIRST BASE. ROUND TO THE NEAREST HUNDRETH. SO FROM THIRD TO FIRST IT WILL FORM A RIGHT TRIANGLE. THE LEGS ARE 60 TO 2ND POWER + 60 TO THE 2ND POWER. THE HYPOTENUSE IS WHAT I DON'T KNOW TO FIGURE OUT.

*December 12, 2016 by DRE*

**Math**

Sam wants to find the height of a window in a nearby building but it is a cloudy day with no shadows. Sam puts a mirror on the ground between himself and the building. He tilts it toward him so that when he is standing up, he sees the reflection of the window. The base of the ...

*January 28, 2016 by Jiska*

**Math**

A rectangle has sides of length x cm and 2x - 4cm and the length x cm at time t seconds is given by x = 2 + 3t, (t >=0) . Show that the area, Acm2 , the rectangle, in terms of t is A =12t + 18t^2 . Hence find the rate of change of the area at the instant when t = 2..... ...

*January 30, 2015 by Aaqib*

**calculus**

A format for textbook page layouts is to be chosen so that each printed page has a 4-cm margin at the top and at the bottom and a 2-cm margin on the left and right sides. The rectangular region of printed matter is to have an area of 800 sq. cm. Find the dimensions for the ...

*May 10, 2007 by maricela*