Thursday

September 29, 2016
Number of results: 119,685

**MA110/ help pleaae**

How do u solve 1000 base 10 compare to 200 base 10

*February 13, 2013 by Enis *

**Chemistry**

A solution of an unknown base has a concentration of 0.250M, and a pH of 12.72. Calculate Kb for this base.

*September 5, 2013 by Tay*

**Calculus**

Please simplify the expression: 2log(base 4)9 - log(base 2)3

*July 8, 2015 by Alisha*

**college physics**

a glass container was filled with oil with a density of 0.80 g/cm^3 up to 9 cm. in height. 1) what is the pressure at the base of the container? 2) what is the pressure if depth is 3 cm. from the surface of the oil? 3) what is the pressure if depth is 4 cm. above the base?

*September 8, 2010 by weng*

**chemistry**

If a hydrate of the formula decomposes when heated to produce HCl, what change would you expect to occur when a piece of blue litmus paper is held in the path of the vapor released? [Litmus paper is paper impregnated with an acid-base indicator that is blue in the presence of ...

*February 20, 2010 by David*

**maths**

b. The cross sectional area of a cylindrical pin is 38.1 cm2. The pin has a removed segment. If the height of the segment is 7% of the circumference, find the area of the removed segment.

*January 25, 2012 by rahul patel*

**math**

The first angle of a triangle is 24 more than the second. The third angle is twice the first. Find the measure of the angle of the triangle.

*November 15, 2010 by dan*

**GEOMETRY TRIANGLE **

IN TRIANGLE ABC, A POINT D IS ON AC SO THAT AB=BD. ANGLE ABC - ANGLE ACB = 30. FIND ANGLE CBD HELP NNNNNDEEEEEDDDD PLEASE

*October 24, 2013 by Barbie Lee *

**math**

A line with negative slope passes through the point P(5,2) and intersects the x-axis at the point A and the y-axis at the point B. a. Find the equation of the line for which the length of the segment AB is the smallest. b. Find the equation of the line for which sum of the ...

*February 22, 2015 by ani*

**trigonometry**

please check my answers. 1.Find the area of the sector of a circle. r=11.8cm, theta-pi/7 radians I got 31.2cmsquared 2.Find the radius of a circle in which a central angle of pi/6radian determines a sector of area 76square meters. I got 17.03m 3.Find the measure(in radians) of...

*January 7, 2009 by y912f*

**Algebra 2**

-Explain the difference between log base b of m plus log base b of n and log base b (m+n). Are they equivalent? -Explain the difference between log base b (mn) and ( log base b of m)(log base b of n). Are they equivalent?

*July 20, 2013 by Anonymous*

**chemistry**

A 4.50e-2 M solution of unknown monoprotic weak base has a pH of 10.200 what is the value of kb for the base

*April 28, 2010 by Nancy*

**algebra**

What would the first 15 counting numbers for base two and base four bases?

*May 12, 2010 by Kristi*

**math/formula 1**

how do i find the area of trapezoids and triangles

*January 5, 2008 by Anonymous*

**geometry**

What is the lateral area of a cylinder? How do you find it? Is there a formula?

*January 15, 2010 by Nicole*

**math**

Find the lateral area for the prism. what formula do i us for this?

*March 3, 2011 by danny*

**precal**

A contractor needs to know the height of a building to estimate the cost of a job. From a point 84 feet away from the base of the building, the angle of elevation to the top of the building is found to be 44 degrees and 23'. Find the height of the building. Round your answer ...

*October 8, 2011 by Antonia*

**Physics 30**

A point charge q=+4.7nC is placed at each corner of an equilateral triangle with sides of 0.21m in length. a) What is the magnitude of the electric field at the midpoint of the three side of the triangle? b) Is the magnitude of the electric field at the centre of the triangle ...

*April 5, 2012 by Derek*

**math-PLEASE CHECK AND HELP**

find the surface area and volume of the right circular cylinder. The radius is 3 and height 6. This is what I put for volume: v=pir^2h pi(3cm)^2 6 cm= 54pi cm cubed can you please check this and show work on how to do the surface area? Thanks.

*May 16, 2010 by crystal*

**anonymous**

1.) an account invested in a month market fund grew from $67,081.20 to $67,359.39 in a month. What was the interest rate, to the nearest tenth? 2.)you are due a tax refund of $760. your tax preparer offers you a no-interest loan to be repaid by your refund check, which will ...

*March 15, 2011 by math i have a few questions.hepl pls ty*

**Calculus **

A ball is thrown up on the surface of a moon. Its height above the lunar surface (in feet) after t seconds is given by the formula h=308t−(14/6t^2) Find the time that the ball reaches its maximum height. Answer = Find the maximal height attained by the ball Answer =

*October 28, 2014 by Hailey*

**math**

please help, a field is in the form of a parallelogram whose base is 420m and height is 3.6 dam. find the cost of watering at 10 ps per sq.m

*June 2, 2011 by sonu*

**Algerba I**

a trapezuim has no sides parallel. Its area is given by the following expression 1/2(ah1 + bh2) Note: the 1 and 2 are small and almost under but beside the h A. Evaluate the expression for a = 5 ft 4 in., b = 2 ft 8 in., h1 = 4 ft 4 in., h2 = 6ft 4 in B. If a gymnast stands ...

*September 18, 2007 by Jordan*

**math**

Work the following area application problem. You are given the job of laying carpet for a six-story building. At each floor the dimensions of the floor are 75 meters in length by 40 meters in width. A stairwell takes up a space 2.5 m by 1.5 m, and cuts through each floor. If ...

*July 1, 2016 by C*

**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*

**geometry**

A triangle has two angles that have measures of 22.5 degrees and 101 degrees. a. Find the measure of the third angle. b. Classify the triangle by its angle measures.

*January 23, 2011 by shane*

**Algebra - Math**

The medium side of a triangle is 9 more than 1/2 the shortest side,and the longest side is 4 times the shortest side. If the perimeter is 31 in. Find the lengths of the sides of the triangle

*November 21, 2015 by Licinia *

**Geo**

What is the formula to determine the median of an equilateral triangle?

*August 20, 2014 by Earl*

**math**

There's a circle with that has a dot in the middle with two line going to the left and right that's is 16 m. I have to find the area of the circle. I have to give that exact area and an approximate area to the nearest square unit. Help?

*November 18, 2010 by Alex*

**math 107**

Use the following diagram of a flowerbed of petunias to answer the following questions. This diagram is a rectangle with a circle on each end. The circle diameter is 22 feet, while the length of the rectangle is 60 feet. If you draw an X in the middle of the rectangle, you ...

*February 23, 2015 by kristie*

**Math**

1) Rectangle ABCD has a perimeter of 106 inches. If the width is 7 inches, what is the length? 2) If X=7 inches, Y=11 inches, Z=15 inches, and H=6 inches, what is the area of the triangle?

*December 23, 2011 by Stupid Person*

**I NEED HELP WITH THIS. PLZ **

Lesson 2:3-D Views Unit 2: Measurement Multiple Choice For questions 1-3, use the following model. 1. How many cubes are in the base of the model? (1 point) A. 3 B. 4 C. 7 D. 2 2.How many cubes would be shown in the right view of the model? (1 point) A. 3 B. 6 C. 7 D. 4 4. ...

*February 9, 2016 by Katrina*

**math**

the radius of a circle when the numeric values of the circumference and the area are equal Start with what you know. If you know the formula the area of a circle, and the formula for the circumference of a circle, then you can set them equal to each other...from there you ...

*October 31, 2006 by mark*

**measurements**

A cone and a cylinder have the same volume and the same base radius. If you are given only the height of the cylinder, is it possible to figure out the height of the cone? If so, how would you figure it out? Am thinking yes, because if they are the same in volume then the ...

*February 7, 2010 by rmz*

**Math**

Byrons house has a roof with dimensions shown. (Roof: 1m Height, 7m Hypotenuses, 12m length) He knows that the average rainfall in his suburb is 30cm per year. Byron would like to install a cylindrical rainwater tank to hold the water that runs off the roof. The tank is to be...

*June 14, 2015 by Alex*

**Math**

A farmer with 8000 meters of fencing wants to enclose a rectangular plot that borders on a river. If the farmer does not fence the side along the river, what is the largest area that can be enclosed? Does that mean I have to consider it a triangle?

*September 12, 2009 by muffy*

**Algebra**

Triangle ABC has coordinates A(1, 4); B(3, 2); and C(4, 2). Find the coordinates of the image A'B'C' after a reflection over the x-axis? I have never done one where the triangle is already over the x-axis...do we flip it up or down... Please help me figure this out...

*October 27, 2012 by Deborah*

**Math**

The radius of the circumscribed circle of the triangle abc is 15cm. given that B is a 49-degree angle; find the length of the side AC

*September 7, 2010 by Crystal Johnson*

**trig**

Given a right triangle with legs 8 and 5, find the measure of the two acute angles. (Round to the nearest hundredth

*March 29, 2011 by kristy*

**math 118**

use divisions to convert the base ten numeral 555 to base six

*October 13, 2010 by kari*

**Geometry**

What is the volume of a regular pyramid if it has a square base, one side of the base measures 4 cm, and the altitude is 5 cm?

*July 31, 2011 by Brianna*

**Chemistry**

This a back-titration problem, the equation is (mass/molar mass * na)+ (Ma * Va* na) = (Mb * Vb* nb. do the na and nb variables refer to the moles of the acid and base, or the moles of H and OH? acid and base acid and base

*June 4, 2007 by Tucker*

**chemistry**

Classify each substance as either arrhenius acid or base: A) HF (aq) B) Ba(OH)2 (aq) C) H2SO4 (aq) D) NH4OH (aq) My work A) arrehenius acid B) arrhenius base C) arrhenius acid D) arrhenius base Am i right

*January 10, 2015 by ROSE*

**computer science**

how would 123 base 4 look in base 5 and why?

*October 8, 2008 by mb*

**math**

how do i solve this logarithm log(base 9)X + 3log(base 3)X = 14

*January 7, 2009 by kayla*

**Chemistry**

The pH of a 0.065 M solution of a weak base is 11.70. What is the value of Kb for this base?

*February 27, 2011 by Brian*

**Chemistry**

A certain weak base has a Kb of 8.10 10-7. What concentration of this base will produce a pH of 10.00?

*October 25, 2011 by Dana*

**chemistry**

A certain weak base has a Kb of 9.00 10-7. What concentration of this base will produce a pH of 10.34?

*October 21, 2012 by Kelly*

**Chemistry**

A 0.010M solution of base B is 15% dissociated. Calculate the Kb for base B.

*February 24, 2013 by James*

**chemistry**

A certain weak base has a Kb of 8.40 10-7. What concentration of this base will produce a pH of 10.34?

*March 26, 2013 by Anonymous*

**chemistry**

A certain weak base has a Kb of 8.40 10-7. What concentration of this base will produce a pH of 10.34?

*March 28, 2013 by Anonymous*

**chemistry**

A certain weak base has a Kb of 7.80 10-7. What concentration of this base will produce a pH of 10.17?

*May 19, 2013 by Lana*

**Chemistry**

If the pH of a 0.46 M aqueous solution of a weak base is 9.2, estimate the Kb of the base:

*August 1, 2016 by Damon*

**Math**

Perimeter is 95 cm, each leg is 7 cm longer than its base. How long is the base?

*September 1, 2016 by Rean*

**Maths**

A pedestal is constructed in the form of frustum of a pyramid, the sides of the square ends of the frustum being 360cm and 160 cm and slant height 260cm. Find volume , lateral surface area including area of the top and the cost of construction @ rs.50 /cubic metre and ...

*February 6, 2016 by Chaitanya*

**algebra 1**

the base of isosceles triagle is 5 m less than 4 times the length of a side. The perimeter is 67, find the length of each side and the base

*September 30, 2013 by Mayi*

**Algebra**

the base of isosceles triagle is 5 m less than 4 times the length of a side. The perimeter is 67, find the length of each side and the base

*September 30, 2013 by Mayi - In need of help - Please :) *

**Calculus**

Q. An open-top box with a square base is to have a volume of 62.5 square inches. What dimensions will yield the box of minimum surface area? I am getting 5" by 2.5" but not sure.

*March 3, 2012 by Casey*

**Physics**

3 charges sit on vertical equilateral triangle the side of each is 30.0 cm. if the triangle are A= +4.0 uC B=+5.0 uC and C=+6.0 uC (clockwise from top) what is the force on each charge? Can someone please explain me in detail i am really confuse :(((

*August 19, 2012 by sara*

**math problem triangle inequality help**

Two sides of a triangle are 11 and 17. How many possible lengths are there for the third side, if it is a positive integer? I tried listing them all but I get confused...Please help thank you!

*December 26, 2012 by Knights*

**Calc**

We assume that an oil spill is being cleaned up by deploying bacteria that consume the oil at cubic feet per hour. The oil spill itself is modeled in the form of a very thin cylinder as depicted below. Its height is the thickness of the oil slick. We assume that an oil spill ...

*February 25, 2008 by Anonymous*

**maths (trigonometry)**

The angle of elevation and angle of depression of the top and base of a mobile tower from a mobile handset are 60 degree and 30 degree respectively. If the distances of the top and the base of the tower from the mobile handset are 15m and 8m respectively, find the height of ...

*December 11, 2015 by keya*

**geometry**

How many square inches are in the lateral surface area and total surface area of an aluminum can with 2 1/2 in. diameter and 4 3/4 in. height? I've worked on this until I'm crossed-eyed and it's not coming out right!

*March 9, 2013 by tmouery*

**Physics**

From the edge of the rooftop of a building, a boy throws a stone at an angle 24.0 above the horizontal. The stone hits the ground 4.40 s later, 104 m away from the base of the building. (Ignore air resistance.) Find the initial velocity of the stone. What's the magnitude and ...

*February 8, 2010 by Max*

**Math**

The shorter edges of a 36 cm x 20 cm metalsheet are joined to form the vertical surfaces of a square base prism. What is the volume of the prism? what is the area of metal sheet required to make the top and the bottom of the prism.

*July 17, 2016 by John*

**math**

can anyone help please, i need a simple formula for working out taxes.if i had any number i need to know what the base was before 16% tax was added. i know the formula if the tax was 17.5%,what ever the total is if you divide that by 47 then x that by 7 that will give you the ...

*April 15, 2007 by simon*

**Math **

I am doing a project, are my answers correct? 1. Find and simplify the volume-to-surface-area ratio for each of the three possible ice cube shapes. You can use this chart. |Shape| S/A Formula|Volume Formula Cube | S.A=6s^2 | V=s^3 6/s Sphere|S.A+4 pi r^2|V=4/3 pi r^3 3/r ...

*March 4, 2016 by Alexia Smith*

**Math: Functions**

A circular oil slick is expanding with radius, r in yards, at time t in hours given by r=2t-0.1t^2, for t in hours, 0<t<10. find a formula for the area in square yards, A= F(t), as a function of time.

*October 7, 2011 by Savana*

**Math**

The sum of the lengths of the sides of triangle ABC is 38in. The length of sides AB and BC are 14 inches and 11 inches. Find the length of side AC and classify the triangle.

*March 5, 2012 by Elaina*

**Algebra**

The hypotenuse of a right triangle is 13 inches long. The shorter leg is 7 inches shorter than the longer leg. Find the side lengths of the triangle.

*March 23, 2016 by Jewls*

**log graph**

How do you graph y= -log (base 5)(-x)? The written question is: Sketch above equation by first describing the transformations performed on the equation y= log (base 5)(x) And what is the inverse function? x=log (base 5)(y)?

*November 1, 2010 by Ali*

**math**

triangle abc is reflected over the y-axis. What are the coordinates of the reflected triangle? Describe in words what happens to the x-coordinates and y-coordinates of the original triangle's vertices as a result of this reflection? I can't figure out how to describe what ...

*March 15, 2016 by Amanda*

**maths**

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

*June 8, 2007 by kat*

**Math**

The circular area A in square centimetres of a healing wound is given by A(r)=πr^2 Where r =the radius in centimetres. Find the rate of change of the area with respect to the radius. My work: I'm not really sure if this is correct but I gave it a try. Dy/dx =π*2r^2-1...

*February 24, 2016 by Nicki*

**Math**

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

*March 10, 2016 by Ashley*

**algebra**

The lengths of the sides of a triangle are in ratio 2:4:5. The perimeter of the triangle is 44 cm. Find the lengths of the sides.

*September 14, 2016 by Bashar*

**trig**

find the value of x when: x= 5 log base 2 (1/16)+ 8 log base 3 (27)

*August 26, 2011 by pat*

**Math please help! Urgent **

Find the height of an equilateral triangle with sides of length 6 cm ' please show ur work

*November 25, 2012 by Jessica *

**Calculus**

Suppose that the region between the x-axis and the curve y=e^-x for x>=0 has been revolved around the x-axis. Find the surface area of the solid. I got 3*pi The book shows an answer of pi * [sqrt(2) + ln(1 + sqrt(2))] Where do I go wrong? For the sides of the surface, I ...

*January 13, 2008 by mathstudent*

**math**

A baseball player reaches base 35% of the time. How many times can he expect to reach base in 850 at-bats?

*April 30, 2012 by Jessica*

**Math**

In chemistry class, each of the 82 students needs 72 mL of base. How many one- liter bottles of base need to be available? Help?

*November 28, 2015 by kristine*

**geometry**

word problem You and 3 friends order a 24 in pizza (the diameter is 24 inches) what is the area of the pizza? Round to the nearest tenth. If you and 3 friends spit the pizza evenly, how much do you get to eat? What is total area? and what is your area? for total area i got 452...

*May 6, 2012 by marko*

**Calc**

Consider the Dosage Formula y=(S/1.73 where y = childfs dosage, a = the adult dosage, and S = the surface area of the body in square meters. The Surface Area Formula is S(w,h)=0.0101w^(.425)*h^(.725) where S = the surface area of the body in square meters, w = the weight in ...

*February 16, 2012 by Fatih*

**calculus**

Find the area bounded by {y=x2−4 y=4−x2 sketch the region described determine any intersection point(s) for the curves (show work!!) write out the integral(s) that will calculate the area determine the area (may use a calculator)

*October 3, 2013 by Will*

**Algebra**

Identify the triangle PQR as isosceles ( two sides equal length) equilateral (three sides of equal length) a right triangle, or a scalene triangle (three sides of different length)

*September 18, 2011 by Amanda*

**CALCULUS **

a. for y= sinx y=0 and x=pie/2 if each cross section is an equilateral triangle perpindicular to the x axis what is the total area? b.also same question except triangles are perpindicular to y axis answer's are appreciated but i need the work more.

*February 3, 2011 by Little*

**physics**

From the edge of the rooftop of a building, a boy throws a stone at an angle 30.0 above the horizontal. The stone hits the ground 4.10 s later, 112 m away from the base of the building. (Ignore air resistance.) (a) Find the initial velocity of the stone. magnitude _____ ...

*February 14, 2010 by jenn*

**Math**

The length of the hypotenuse of a right triangle is 2m more than the longer leg. The longer leg is 7m longer than the shorter leg. Find the perimeter of the triangle. ( please explain as you go)

*March 31, 2016 by Julia*

**calculus(Lab)**

Well, first graph the graph of f(x)=-1/10x^2 + 3 2. We are going to approximate the area between f and the x-axis from x = 0 to x = 4 using rectangles (the method of Riemann sums). This is not the entire area in the first quadrant, just most of it. Draw four inscribed ...

*January 25, 2012 by Yoona*

**Chemistry**

Use the Bronsted-Lowry definitions to identify the two conjugate acid-base pairs in the following acid-base reaction: H20 + H20 <-> H30^+ + OH^- Let's see what you think on this after the previous post. Just remember, the acid is the one that HAS the H and the base is ...

*May 26, 2007 by Raj*

**math**

A right circular cone stands on a hemisphere. The base radius of the cone is equal to the radius of the hemisphere. If the base radius of the cone is 10 centimeters and its height is 15 centimeters,calculate the total volume of the solid.

*January 6, 2016 by Dennis*

**science**

three point electric charges q,2q,4q are placed at the three vertices of an equilateral triangle inscribed in a circle. find the net elect ric field at the centre of the triangle. answer : I think the answer is( 910^9 q√10)/r^2 ,where r is the radius of circle

*May 4, 2016 by shivansh*

**physics**

A 66.0 kg base runner begins his slide into second base when he is moving at a speed of 4 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to ...

*October 4, 2008 by Sandhya*

**Physics**

A 67.0 kg base runner begins his slide into second base when moving at a speed of 3.5 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. How much mechanical energy is lost due to friction ...

*November 14, 2010 by Marcus*

**Physics**

A 69-kg base runner begins his slide into second base when he is moving at a speed of 3.7 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to ...

*May 3, 2013 by Abdul A.*

**Physics**

A 69-kg base runner begins his slide into second base when he is moving at a speed of 3.7 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to ...

*May 7, 2013 by Abdalla A.*

**Physics **

A 66.0 kg base runner begins his slide into second base when moving at a speed of 4.4 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical energy is lost due to friction...

*October 25, 2014 by Caitlin *

**MATH HELP PLEASE!!**

1. Mandy kept track of the trade-in value of a collectors coin for several months through February of this year. She determined the line of best fit for the data was y = 4x + 12, where y is the trade-in value, in dollars, x months after February of this year. According to the...

*May 23, 2014 by kelsey *

**pre-calc**

a farmer wants to make a rectangular enclosure using a wall as one side and 120 m of fencing for the other three sides. a) express the area in terms of x and state the domain of the area function b)find the value of x that gives the greatest area. my teacher didn't explain how...

*October 1, 2007 by INEEDHELP!!!*

**math**

The base of a rectangular prism is 6 inches - 9 inches. what is the lateral area of the prism

*July 16, 2014 by hannah*