DanielHendrycks
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 Daniel Hendrycks
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Questions Answered

DanielHendrycks:
Show (0,0) is a saddle point of the function 2x^3 + 6xy + 3y^2
 updated one year ago
 4 replies
 2 Medals
Mathematics

DanielHendrycks:
Decompose into partial fractions: x^3/(x+1)^3. The answer has four terms, but our normal method only allows for 3 terms. Does the normal met…
 updated one year ago
 13 replies
 1 Medal
Mathematics

DanielHendrycks:
How is 0=0/x, considering x can be 0? http://www.wolframalpha.com/input/?i=0%3D0%2Fx
 updated one year ago
 17 replies
 2 Medals
Mathematics

simplybeyoutiful:
what does the square root of p^6 simplify down to?
 updated one year ago
 2 replies
 1 Medal
Mathematics

Joia_Kirtani:
can u give a mathematical proof for C(n,r) = C(n,nr)
 updated one year ago
 10 replies
 1 Medal
Mathematics

DanielHendrycks:
Work analysis: A teacher picks pairs of students randomly; there are 20 students. What is the probability that Alex and Ali are paired?
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

wiizkiid23:
Select the answer choice below that shows the following numbers in order from least to greatest: 8.21, 8.202, 8.2012, 8.212, 8.2
Answer
…
 updated one year ago
 3 replies
 1 Medal
Mathematics

wiizkiid23:
Which of the following sets contains 3.141592…? Answer
Whole Numbers
…
 updated one year ago
 4 replies
 1 Medal
Mathematics

wiizkiid23:
Which of the following sets does not contain 101? Answer
Rational Numbers
…
 updated one year ago
 3 replies
 1 Medal
Mathematics

wiizkiid23:
Which of the following is not a subset of the set of rational numbers? Answer
Whole Numbers
…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

DanielHendrycks:
If less is better, by what percentage is 2000 greater than 5000?
 updated one year ago
 2 replies
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Mathematics

DanielHendrycks:
Prove the area of a parallelogram is 1/2 d_1 d_2 sin(theta).
 updated one year ago
 19 replies
 1 Medal
Mathematics

DanielHendrycks:
A tennis ball on Mars, where the acceleration due to gravity is 0.379g and air resistance is negligible, is hit directly upward and returns …
 updated one year ago
 16 replies
 1 Medal
Mathematics

zeesbrat3:
The coordinates of the vertices of two rectangles, Rectangle A'B'C'D' and Rectangle P'Q'R'S' are given below.
Rectangle A'B'C'D' – A(0,…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

DanielHendrycks:
A car, when braking from 60.0 mph on dry pavement, stops in 146 ft. What is the acceleration?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

DanielHendrycks:
Is there a slick way of solving for the complex roots of this: x^52x^4+3x^25=0
 updated one year ago
 9 replies
 1 Medal
Mathematics

DanielHendrycks:
Why does 5 * (13 choose 5) represent: the number of ways you can choose a team of five people chosen from a room of 13 people, where you are…
 updated one year ago
 16 replies
 1 Medal
Mathematics

DanielHendrycks:
While driving on the freeway at 110 km h, you pass a truck whose total length you estimate at 25 m. If it takes you, in the driver’s seat, 5…
 updated one year ago
 17 replies
 1 Medal
Mathematics

DanielHendrycks:
Why did Robert Benchley say, "We call England 'The Mother Country' because most of us come from Poland or Italy"?
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

DanielHendrycks:
Find points of intersections. x^2+y^24=0 and 3xy^2=0
 updated one year ago
 11 replies
 1 Medal
Mathematics

Lanik:
A culture starts with 8600 bacteria. After one hour the count is 10,000.
a) Find the function that models the number of bacteria n(t) aft…
 updated one year ago
 21 replies
 No Medals Yet
Mathematics

DanielHendrycks:
See this: http://i.imgur.com/VtJVa.png Construct a parabolic equation based off of this.
 updated one year ago
 18 replies
 1 Medal
Mathematics

DanielHendrycks:
Is there a clean way to solve this problem: "Find the equation of an ellipse with these properties: vertices: (0, + or  5); passes through …
 updated one year ago
 5 replies
 1 Medal
Mathematics

LindaCyleighMarie15:
How do you find the total surface area of a cone ? !
 updated one year ago
 13 replies
 1 Medal
Mathematics

DanielHendrycks:
Why did they set d_1 = d_2. (See attached picture.)
 updated one year ago
 4 replies
 1 Medal
Mathematics

DanielHendrycks:
Analyze what I did incorrectly when I tried to find the angle between the two lines x+2y=8; x2y=2
 updated one year ago
 10 replies
 3 Medals
Mathematics

DanielHendrycks:
Find the square root of 25i.
 updated one year ago
 34 replies
 1 Medal
Mathematics

DanielHendrycks:
"The average (mean) of 20 numbers is 30, and the average of 30 other numbers is 20. What is the average of all 50 numbers?" The harmonic mea…
 updated one year ago
 13 replies
 2 Medals
Mathematics

DanielHendrycks:
Resources about sigma * sigma? I am having difficulty finding some resources on it.
 updated one year ago
 3 replies
 1 Medal
Mathematics

DanielHendrycks:
3y+7 = 2y1 for all real y
 updated one year ago
 12 replies
 1 Medal
Mathematics
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