Saturday

August 23, 2014

August 23, 2014

Total # Posts: 43

**Math**

The bases of trapezoid ABCD are AB and CD. Let P be the intersection of diagonals AC and BD. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.
*November 23, 2013*

**Math**

Solution 1: Triangles ADE and BFE are similar since \overline{AD}\parallel\overline{BF}. Furthermore, the ratio of their areas is 9:1, so AE/BE = 3. Then CD = AB = AE + BE = 3BE + BE = 4BE. Triangles FEB and FDC are similar, so the area of triangle FDC is (DC/BE)^2 \cdot [FEB...
*November 23, 2013*

**Math**

Let ABCD be a parallelogram. Let M be the midpoint of AB and N be the midpoint of AD. Diagonal BD intersects CM and CN at P and Q, respectively. Find PQ/BD.
*November 23, 2013*

**physics**

CHEATER!!! DO NOT POST ANSWERSS
*October 21, 2013*

**calculus**

A water-trough is 10m long and has a cross-section which is the shape of an isosceles trapezoid that is 30cm wide at the bottom, 80cm wide at the top, and has height 50cm. If the trough is being fi lled with water at the rate of 0.2 m3/min, how fast is the water level rising ...
*December 1, 2012*

**calculus**

Find a number x0 between 0 and pi such that the tangent line to the curve y = sin x at x = x0 is parallel to the line y = -x=2. I get that for both lines to be parallel to each other their slopes need to be the same. I found -1/2 = cos(x) but I get stuck here. What ...
*December 1, 2012*

**calculus**

So y'(0) = 0 because there is a horizontal tangent at x = 0?
*November 29, 2012*

**calculus**

Find a function f such that the curve y = f(x) satisfies y'' = 12x, passes through the point (0,1), and has a horizontal tangent there. I can use the anti-derivatives to get y = 2x^3 + Cx + D but I don't know how to get C even though I know D = 1.
*November 29, 2012*

**calculus**

y = x^3*
*November 6, 2012*

**calculus**

The point (1,5) isn't on the graph of y^x^3. It is just a point on the tangent of the graph y = x^3. Sorry if I wasn't clear before.
*November 6, 2012*

**calculus**

Find the equation of a straight line that passes through a point (1,5) and tangent to curve y = x^3
*November 6, 2012*

**calculus**

A man starts walking north at 4ft/s from a point P. Five minutes later a woman starts walking south at 5ft/s from a point 500 ft due east of P. At what rate are the people moving apart 15 min after the woman starts walking? I'm confused about the diagram and what to do ...
*October 23, 2012*

**statistics**

asdf
*March 26, 2012*

**Chemistry**

asdf
*May 25, 2011*

**statistics**

asdf
*April 11, 2011*

**physics**

5/8L is the answer for future students who is taking physic class. yw
*April 10, 2011*

**physics**

it's not 3/4L or 1/4L
*April 10, 2011*

**physics**

DENSITY=MASS/VOLUME =24/4=7
*March 10, 2011*

**Physic**

asdf
*March 3, 2011*

**Math; Complete the square for the expressions**

I meant, "Why isn't (25/2)^2 (25/4)?"
*December 31, 2010*

**Math; Complete the square for the expressions**

I have a number of problems I'm having problem with but they start with the example given in the book 2x^2 - 10x =2(x^2 - 5x) =2{[x-(5/2)]^2 - [(5/2)^2]} =2[x-(5/2)]^2 - (25/2) Why isn't (5/2)^2 (25/4)? I'm struggling with the exercises as well. 3x^2 - 24x I get 3(...
*December 31, 2010*

**Math(College Algebra)**

Thanks
*September 15, 2010*

**physic**

3 meters tall
*April 18, 2010*

**chem**

How does a gas differ from a liquid with respect to the following property: Ability to mix with other substances of the same phase to form homogeneous mixtures Gases form homogeneous mixtures with each other regardless of the identities or relative proportions of the component...
*December 9, 2009*

**Science**

to go away by a chemical reaction
*October 19, 2009*

**AP Physics**

dfsa
*August 10, 2009*

**fin. am I correct?**

DCL= % Change in EPS/ % Change in Sales = DOL x DFL
*July 30, 2009*

**Biology**

lol, BGYA02 at UTSC. I'm doing that assignment too :P
*March 28, 2009*

**English grammar**

In the following sentence, what part of speech is the word "spent": This meant time spent working was wasted.
*March 11, 2009*

**english**

Concerning my past question, is "working" the only word in the gerund phrase and my teacher said that it "working" wasn't a DO. No one in my class could figure out the answer.
*March 10, 2009*

**Study Tips**

Sit in your own quiet place without any noise. If you don't get distracted, you can listen to soft music which helps calm your nerves or tension. Scientists also prescribe lighting a mint smelling candle or something that smells minty to help stimulate your mind.
*March 10, 2009*

**English**

What is the gerund phrase and does it act as a direct object, subject, or etc. in the following sentence: This means time spent working was wasted.
*March 10, 2009*

**biology test**

Numbers 2 and 3 are right for sure. I don't know about number 1
*March 10, 2009*

**MATH**

HAHAHAHAAHHAHAHAHAHAHAAHHAHAH
*September 23, 2008*

**math**

x = 2 y = 1/2 now stop posting the same question 20 billion times.
*September 22, 2008*

**C++**

#include <iostream.h> #include <stdlib.h> int main ( ) { int choice; cout << "Computer Repair" << endl; cout << "\n Does your ailing computer beeps multiable times at startup?" << endl; cin >> choice; switch (choice...
*July 10, 2008*

**Physics**

4.8 m/s^2
*September 19, 2007*

**Advanced Production**

sadrhasd
*April 26, 2007*

**Physics**

aveagg
*January 13, 2007*

**physics**

3 meters is the total distance 1.5 for each one
*October 9, 2006*

Pages: **1**