Thursday

March 5, 2015

March 5, 2015

Number of results: 101,527

**Algebra 2 **

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

**Algebra 2 **

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

**AP Physics**

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

**mathematics**

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

**Advanced C**

The measure of one of the equal angles in an isosceles triangle is twice the measure of the remaining angle. Determine the exact radian measures of the three angles in the triangle.
*October 26, 2009 by Anonymous*

**geometry**

Which geometric figure could not be drawn using both perpendicular line segements and parallel line segements? A.a pentagon B. a rectangle C. a trapezoid D. a triangle IS the answer(D) a triangle
*February 13, 2010 by Marie*

**Geometry**

A regular hexagon is made from equilateral triangle by cutting along the dotted lines and removing the three smaller triangles. if triangle has a perimeter of 18, what is the perimeter of hexagon?
*June 10, 2010 by DJ*

**physics **

Three resistors, each of resistance 6 Ω, are connected in such a way that that they form the three sides of a triangle. What is the equivalent resistance between any two vertices of the triangle?
*May 23, 2011 by ashley --- HELP PLEASEE!!!*

**physics **

Three resistors, each of resistance 6 Ω, are connected in such a way that that they form the three sides of a triangle. What is the equivalent resistance between any two vertices of the triangle?
*May 23, 2011 by ashley --- HELP PLEASEE!!!*

**Geometry**

Use any tools to construct each of the following, if possible: a. A right triangle with one acute angle measuring 75° and a leg of 5 cm on a side of the 75° angle b. A triangle with angles measuring 30°, 60°, and 90°
*August 1, 2011 by Adalgisa*

**Math**

the short side of an isosceles triangle is 16cm long increasing each side length by 24cm doubles the perimeter. how long are the other sides of the original triangle?
*January 24, 2012 by Alexa*

**physics**

Three resistors, each of resistance 6 Ω, are connected in such a way that that they form the three sides of a triangle. What is the equivalent resistance between any two vertices of the triangle?
*April 23, 2014 by m*

**Geometry**

In a triangle with integer side lengths, one side is three times as long as a second side, and the length of the third side is 15. What is the greatest possible perimeter of the triangle?
*August 15, 2014 by itrixie*

**Math, Quadratic Functions**

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

**calculus**

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

**chemistry**

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

**Computer Math**

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

**Math**

The coordinates of the vertices of triangle ABC are A (-5,1), B (-2,3) and C (-4,7). The triangle is reflected over the line x=2. What is the sum of the x-coordinates of points A', B' and C'(the points after the reflection)?
*December 19, 2007 by Sam*

**Geometry**

The hypotenuse of a right triangle is the side opposite the? a. 90 degree angle b. smallest angle of the triangle c. acute angle d. top angle I believe it is a
*October 2, 2008 by Jen*

**math**

A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice?
*October 19, 2010 by Ted*

**math**

A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice
*October 20, 2010 by Ted*

**math**

A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice
*October 20, 2010 by Ted*

**Geometry**

A right triangle has an angle that measures 55 degress. The leg adjacent to this angle has a length of 43 cm. What is the length of the triangle? Round to the nearest tenth
*February 14, 2011 by Marco*

**Geometry Triangle Coordinate Plane Question**

What kind of triangle is made by connecting the points A(0, –6), B(3,–6), and C(3, –2)? equilateral right isosceles right and isosceles Thank You :)
*January 10, 2012 by sLEXANDria*

**math**

A Triangle has sides 4,8,and 11. In a similar triangle the shortest side is 8 and the longest side is x. a) Write a proportion that models the situation. b) Solve the proportion for x.
*March 27, 2013 by Felicia*

**Inverse trigonometric functions**

How to find the value of arctan(2 sin (pi/3)) without using calculator or sketching a triangle. It is like taking u=something and then evaluating. Thanks. the solution relies on the fact that you should know the ratio of sides of the 30,60 90 degree triangle, and knowing that ...
*April 9, 2007 by Jen*

**math**

a rectangle is to be inscribed under the arch of the curve y = 2cosx from x=-pi to x=pi. What is the length of the base of the rectangle with maximum area? can someone help me with this....i have a lot of problems to do just like this but i dont understand them. can someone ...
*December 9, 2009 by kelli*

**Physics**

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

**Physics urgent pls!**

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

**Algebra**

The equation r = (sqrt A)/(pi) gives the radius r of circle with area A. What is the radius of a circle with the given area? Write your answer as a simplified radical and as a decimal rounded to the nearest hundredth. a. 50 ft^2
*April 25, 2014 by Anonymous*

**geometry**

Find the area of the following figure given that AC = 15 in and BC = 12 in.
*February 25, 2011 by Anonymous*

**Geometry**

Find the area of this quadrilateral with the given vertices: A(-8,6) B(-5,8) C(-2,6) D(-5,0)
*March 30, 2011 by shannon*

**Geometry**

Find the area of this quadrilateral with the given vertices: A(-8,6) B(-5,8) C(-2,6) D(-5,0)
*March 31, 2011 by shannon*

**Geometry**

Find the area of this quadrilateral with the given vertices: A(-8,6) B(-5,8) C(-2,6) D(-5,0)
*March 31, 2011 by shannon*

**algebra**

Given: Perimeter= 20 in Area= 15 sq. in Find hypotenuse= ?
*November 17, 2014 by ferdinand*

**Geometry-8th gr**

Find KN and LM. In triangle LKM, angle L is bisected. Line segment LK is 11, line segment KN is x-4, line segment NM is 5.4, and line segment LM is 2x + 1.3 (there is a drawing of this triangle) Thanks.
*February 1, 2013 by Mona*

**Math**

Find the shaded area in the following figure if the rectangle inscribed in the circle has dimensions 3 ft x 4 ft. I know I find the area of the rectangle A=l*w, but what do I do next?
*December 16, 2009 by Punkie*

**math**

drawing several kinds of triangles including a right triangle, than draw a square on each of the sides of the triangles. compute the area of the squares and use this information to investigate whether the pythagorean theorem works for only the right triangles.(use a geometry ...
*May 16, 2012 by sue*

**math**

A triangle has sides of lengths 48 feet, 55 feet, and 74 feet. Which statement is true concerning this triangle?
*March 2, 2011 by Lo*

**Math**

What is the best estimate of the measure of: Right triangle, A,B,C, if there are no degrees. Ans. 15 degrees. How do you get this if there are no degrees on the triangle??
*November 30, 2012 by Edna*

**math**

Triangle XYZ has vertices X(-5,3), and Z(7,-6). Find the coordinates of vertex X after the triangle is dialated using a scale factor of 4. I saw that you didnt want to see another post if we didnt try working it out first. But I need help understanding what the problem is ...
*December 28, 2012 by marie*

**Advanced Math**

log10x + log10(x+1)=1 In other words log base 10 + log base 10(x+1)=1 I need to show it algebraically not using calculator Thanks a lot !
*December 22, 2009 by Chris*

**AP Chemistry**

Write the expression of for the base dissociation constant for hydrazine, N2H4, a weak base. Hydrazine reacts with water to form the N2H5+ ion.
*January 11, 2010 by Angie*

**MAT115**

Identify the base in the following application: The sales tax rate is 8%. If you pay a tax of $2.50 on an item, what is the selling price. I don't know what the base is or how to solve the problem.
*July 22, 2010 by barb*

**chemistry please help me please!!!**

When one student did this experiment, he started with 19.5 mL of 0.118 M monoprotic acid. The endpoint was reached when 17 mL of base was added. What was the concentration of the base?
*July 9, 2012 by Sabrina *

**geomerty HELP PLEASE!**

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

**Math**

Employer receive a base pay of $900.00 plus a sales commission of 6% of sale sum of base pay and commission deduction 18% of gross pay gross pay minus deduction My answer : base pay $900.00 + $54.00 = $954.00 -$171.72= net pay $782.28
*September 19, 2012 by Asia*

**Math**

I wanted to double check that I am correct on the work area and answers please. 1.Given f(x)=x+2 and g(x)= 3x-4. Find (f+g). Work: (x+2) + (3x-4) Answer: 4x-2 2.Given f(x)=x+2 and g(x)=3x-4. Find (f*g). Work: (x+2)(3x-4) Answer: 3x² +2x-8 3.Given f(x)=x+2 and g(x)=3x-4. Find (...
*September 30, 2014 by kim*

**cal**

Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle. f(x)=3/x from x=2 to x=6; n=4
*November 20, 2013 by tony*

**Math help plz**

Identify three different situations where you could apply the Pythagorean Theorem. help.. thank u The Pythagorean Theorem describes a right-triangle. Therefore it can be applied anywhere a triangle exists.
*October 29, 2006 by Linsey*

**Algebra**

The sides of a square are one-third as long as the sides of an equilateral triangle. The difference between their perimeters is 20 centimeters. How long is each side of the triangle? Define your variables. Thx
*March 8, 2010 by Renee*

**geometry**

A wall pennant is in the shape of an isosceles triangle. Each of the two equal sides measures 18 in more than the third side, and the perimeter of the triangle is 54in. What are the lengths of the sides of the pennant?
*March 21, 2013 by Laura*

**math - trig**

Suppose ABC is a right triangle with sides of lengths a, b, and c and right angle at C. Find the unknown side length using the Pythagorean Theorem and find the following trigonometric functions of the indicated angle. Given: a = 4 and b = 7 Find: sin A, cot B, sec A, tan B
*September 25, 2013 by Annika*

**math**

a pyramid has a height of 5 inches and a surface area of 90 inches squared. A similar pyramid has a height of 10 inches what is it's surface area?
*April 12, 2014 by steve*

**trig**

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

**math**

What is the perimeter of a triangle with the given side lengths? s1 = x + 4 cm s2 = 3x + 1 cm s3 = 7x + 3 cm
*October 21, 2014 by Anonymous*

**Chemistry, #3**

Thallium hydroxide is a strong base used in the synthesis of some organic compounds. Calculate the pH of a solution containing 2.55 g TIOH per liter. Sorry! I'm having a really hard time with this acid/base stuff! TlOH is a strong base as the problem says. Do it just as you ...
*August 4, 2007 by Taasha*

**math**

B(0,5) F(0,3) G(30,3) C(30,5) Find the area, Area BFGC =
*March 19, 2014 by jay*

**Python programming**

A standard problem in mathematics is to measure the area under a curve (or to integrate the function defining the curve). A simple way to do this is to approximate the area with a series of rectangles (whose areas are easy to compute). For example, we could split the range ...
*January 13, 2013 by Anonymous*

**math**

A square storage area measures 10 m on a side. By how much must each side be shortened to decrease this area to less than half the original area? (3 marks - show your work)
*January 22, 2015 by Alex*

**math**

A square storage area measures 10 m on a side. By how much must each side be shortened to decrease this area to less than half the original area? (3 marks - show your work)
*January 26, 2015 by Alex*

**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**

Tom drew a triangle with angle measures of 130°, 24°, and 26°. How would you classify Tom’s triangle based on the measures of the angles?
*May 24, 2010 by Anonymous*

**8th grade**

Right triangle ABC is similar to triangle XYZ because angle B is congruent to angle Y. If angle C equals 27°,what is the measure of angle Z?
*June 23, 2010 by Anonymous*

**math**

A triangle whose sides are 5,12, and 13 inches is similar to a traingle whose longest side is 39 inches. What is the perimeter of the larger triangle?
*February 23, 2011 by erika*

**algebra 1**

write an algebraic expression that could be used to represent the perimeter of the triangle below. write the expression in simplest form. triangle 3x+1 3-x 2x+4 A: 6x+2 B: 5x-8 C: 4x+8 D: 6x-2
*March 28, 2013 by Anonymous*

**math**

A triangle has vertices with coordinates (2, 0), (3, -1), and (-2, -5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image.
*December 19, 2013 by james*

**math**

A triangle has vertices with coordinates (2, 0), (3, -1), and (-2, -5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image.
*December 19, 2013 by james*

**math**

one of the two numbers that can be both the perimeter and the area of the same rectangle I am assuming that you are seeking the two rectangles that have the area equal to the perimeter. A 4 x 4 square has a perimeter and area of 16. A 3 x 6 rectangle has a perimeter and area ...
*May 25, 2007 by Amanda*

**Physics**

diagram: big triangle mass m with the square angle bottom left and angle theta bottom right.no frition with the horizontal surface. Above that triangle a similar triangle mass m with a shorter hypothenuse (square angle top right, angle theta top left, no friction between both...
*January 10, 2014 by Anonymous*

**statistics**

Researchers found that 30% of the larch trees in a certain geographical area had been damaged by fungi. (No fun, guy.) Consider a sample of 20 (independent) beach trees from the area. (a) What is the probability that fewer than half are damaged by fungi? (b) What is the ...
*February 16, 2014 by Bud*

**math check**

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

**math**

Triangle UVWis a right triangle. If UV=51 centimetersand VW=140 centimeters. find UW. I subtracted 51 from 140 and got an answer of 191. then i subtracted 191 from 360 to get an answer of 179. is this right?
*May 10, 2011 by Sydney*

**Math Research**

Can someone please tell me any websites that can explain the Sierpinski triangle and talks about its history, and formula? ThanKs!
*May 27, 2008 by Ryoma*

**Physics**

If I know the length of all 3 sides in a right angle triangle, how do I get the degrees of the other angles? Which formula do I use again?
*May 6, 2012 by Don*

**math**

how do you calculate the surface area of a cone with a slant height of 13cm and a height of 12cm.?
*May 30, 2010 by Ted*

**Algebra**

Word Problems: 1. A farmer has 2400 feet of fencing and wants to fence off a rectangular field that borders a straight river. If he needs no fence along the river, what are the dimensions of the field that he can fence with the largest area? Find the area of the field. 2. If ...
*August 13, 2014 by Piper*

**Precalculus**

I have three questions on my homework in which I am stuck on. Thanks for the help! #1 find all solutions of the equation in the interval [0,2pie). In cases where a calculator is necessary, round the answers to two decimal places. sin(sinx)=pie/6 #2 A 100 ft vertical antenna is...
*December 3, 2006 by Anonymous*

**Math quick question!**

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*

**geometry**

A flower bed in the corner of your yard is in shape of a right triangle. The perpendicular sides of the bed measure 6 feet 8 inches and 8 feet 4 inches. Calculate the area of the flower bed.
*March 4, 2012 by kim*

**geometry**

The coordinates of point A on triangle ABC are (2, -4). What would be the image of point A after triangle ABC is reflected over the y-axis andthen rotated about the origin 180 degree?
*May 5, 2012 by Piggy*

**Calculus**

Grain is being dropped into a silo from a tall conveyor belt forming a right circular cone with diameter at the base equal to the height. The grain is being added at the rate of 10 cubic inches per second. How fast is the height changing when the height is 80 inches
*January 27, 2013 by Sam*

**chemistry**

An experiment requires 0.7 M NH3(aq). The stockroom manager estimates that 15 L of the base is needed. What volume of 15 M NH3(aq) will be used to prepare this amount of 0.7 M base? Answer in units of mL
*December 18, 2012 by lauren*

**chemistry**

An experiment requires 0.7 M NH3(aq). The stockroom manager estimates that 15 L of the base is needed. What volume of 15 M NH3(aq) will be used to prepare this amount of 0.7 M base? Answer in units of mL
*December 18, 2012 by lauren*

**Chemistry**

At the equivalence point in a titration you know the volume (x mL) of a standard solution of acid (2.5 M) that has been added to a known volume base (y mL). show how you can determine the concentration of the base.? Explain
*March 15, 2013 by Juan*

**Calculus**

A fence is 1.5m high and is 1m from a wall. A ladder must start from the ground, touch the top of the fence, and rest somewhere on the wall. Calculate the minimun lenght of the ladder. I drew a diagram and i ended up with a right angle triangle. i made the hypotenuse the ...
*April 10, 2010 by lala*

**MATH HELP: Volumes of Pyramids and Cones**

This is my last question in Math. :p 9. Find the volume of a rectangular prism with the following dimensions: Length = 5 mm Base = 7 mm Height = 3 mm a. 142 mm^3 b. 105 mm^3 c. 126 mm^3 d. 130 mm^3
*February 19, 2013 by Batman*

**geomerty**

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 is 2 in and 2 in the height is 5 in then the triagle is 2 in. There is a line between the h 5 and the 2
*May 27, 2013 by Hannah*

**geometry**

Rewrite the statement in if-then form. All equilateral triangles have three congruent sides. a. a figure has three congruent sides if and only if it is an equilateral triangle. b. a figure is an equilateral triangle if and only if it has three congruent sides. c. if a figure ...
*October 2, 2007 by alan*

**Organic Chemistry**

Alcohol has OH functionality, but do you expect it to be a base and why? I would expect it to be a base, but I am not sure why. Does anyone know?
*February 16, 2008 by Bethany*

**chemistry**

What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid base acid NaOH HC2H3O2
*April 9, 2008 by tia*

**Math - logs**

I need help solving this because it involves 2 bases: log (base 2) [log (base 5) 25]= ???
*October 29, 2011 by Anil *

**College Algebra**

Solve the logarithmic equation for x. log(base 3)(x+6) - log(base 3)(x+1)=1 urgent! help!
*December 4, 2012 by Patrick:)*

**chemistry**

how do i predict a conjugate a base? Ex: HBr. The conjugate base is Br- a. NH4+ b. H2O c. H2PO4
*April 8, 2013 by K*

**Information Technology**

I have this assignment due tonight in about 2 and a half hours. I am going to try to finish it the best that I can but I do not know if I will be able to. I really am stuck. I have no idea where to even start on this. Can somebody please help?! • Read the following scenario: ...
*May 28, 2011 by Josh*

**chemistry**

Write the formula of the conjugate acid of base HCO3-,HPO2-,PO43-,SO32-
*February 2, 2013 by baron*

**Math**

An artist is designing the rectangular wire structure with four rectangles drawn inside. The artist has a 12 meter length of wire. If the entire area of the figure is to be maximized, what should be the length of X? I know the formula for area of a rectangle 2(x + y) but, the ...
*May 11, 2014 by Gayle*

**math**

Find the surface area of the right prism. The height is 2.5 cm, the lenght is 8 cm, and the width is 5.3 cm. This is confusing. I need help.
*November 11, 2007 by christina*

**Geometry**

Find the radius of a right cone with the slant height 21m and the surface area 168pi m^2
*April 14, 2008 by Help me!!*

**math**

find the surface area of a Cylindrical grain silo with hemispherical top height=71 diamatere=62
*October 26, 2009 by chandice*

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