Saturday
July 26, 2014

Posts by asdf


Total # Posts: 44

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.

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]...

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.

physics
CHEATER!!! DO NOT POST ANSWERSS

Physics
20

Probability
20

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 w...

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 exactl...

calculus
So y'(0) = 0 because there is a horizontal tangent at x = 0?

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.

calculus
y = x^3*

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.

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

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 wit...

statistics
asdf

Chemistry
ds

whole number
12

Chemistry
asdf

statistics
asdf

physics
5/8L is the answer for future students who is taking physic class. yw

physics
it's not 3/4L or 1/4L

physics
DENSITY=MASS/VOLUME =24/4=7

Physic
asdf

Math; Complete the square for the expressions
I meant, "Why isn't (25/2)^2 (25/4)?"

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(...

Math(College Algebra)
Thanks

physic
3 meters tall

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...

Science
to go away by a chemical reaction

AP Physics
dfsa

fin. am I correct?
DCL= % Change in EPS/ % Change in Sales = DOL x DFL

Biology
lol, BGYA02 at UTSC. I'm doing that assignment too :P

English grammar
In the following sentence, what part of speech is the word "spent": This meant time spent working was wasted.

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.

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.

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.

biology test
Numbers 2 and 3 are right for sure. I don't know about number 1

MATH
HAHAHAHAAHHAHAHAHAHAHAAHHAHAH

math
x = 2 y = 1/2 now stop posting the same question 20 billion times.

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...

Physics
4.8 m/s^2

Advanced Production
sadrhasd

Physics
aveagg

physics
3 meters is the total distance 1.5 for each one

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