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0 
Questions Answered

NMarlatt:
Group Title
If P(A)= 0.7, P(B)= 0.4, P(A or B)= 0.8, What is P(A and B)?
A) .3
B) .4
…
 updated 2 months ago
 2 replies
 1 Medal
Mathematics

Taya2016Lynne:
Group Title
What shape is made when a rectangle is rotated about the y axis?
 updated 2 months ago
 14 replies
 2 Medals
Mathematics

Loser66:
Group Title
Let f(x,y) =3/2 \(x^2\leq y \leq 1\) \(0\leq x\leq 1\)
a)find \(P(0\leq X\leq 1/2)\)
b) find \(P (1/2 \leq Y \leq1\)…
 updated 2 months ago
 27 replies
 2 Medals
Mathematics

pyrotechnix92:
Group Title
The average score of students on an anthropology test is 32, and the standard deviation is 3.5. For this normally distributed data, the prob…
 updated 2 months ago
 4 replies
 No Medals Yet
Mathematics

Loser66:
Group Title
Please help at problem 4.2_7
 updated 2 months ago
 4 replies
 1 Medal
Mathematics

rreyes27:
Group Title
please help to prove by a combinatorial argument that rC(n,r) = nC(n1,r1) for 1≤r≤n
 updated 2 months ago
 1 reply
 No Medals Yet
Mathematics

mony01:
Group Title
Decide whether the set S is a linearly independent subset of the given vector space V.
V=R^3 S=([2,1,4],[4,2,8])
 updated 3 months ago
 5 replies
 2 Medals
Mathematics

toothless07:
Group Title
The time it takes for climbers to reach the highest point of a mountain is normally distributed with a standard deviation of 0.75 hours. If …
 updated 3 months ago
 4 replies
 No Medals Yet
Mathematics

ilovemathbutneedhelp:
Group Title
http://www.eng.usf.edu/~reeves/quiz.html
Hi guys I am not asking you to do the quiz for me, but a simple explanation of how to differentiat…
 updated 3 months ago
 21 replies
 1 Medal
Mathematics

EtherealEbullience:
Group Title
Help
Identify the vertex and the axis of symmetry of the graph function y=3(x+2)^23.
…
 updated 3 months ago
 12 replies
 2 Medals
Mathematics

lopezane:
Group Title
Elly's hot dog emporium is famous for its chilidogs
. Elly's latest sales indicate that 30% of the cust
omers
…
 updated 3 months ago
 3 replies
 No Medals Yet
Mathematics

mykela_m:
Group Title
A box contains 27 parts, of which 5 are defective and 22 are nondefective. 2 parts are selected without replacement. Not sure how to find th…
 updated 2 months ago
 5 replies
 1 Medal
Mathematics

pty507:
Group Title
85% of suspects tried for terrorism actually are guilty. (Don’t worry about how we know this, just take
it as a fact for the sake of this p…
 updated 3 months ago
 1 reply
 1 Medal
Mathematics

EtherealEbullience:
Group Title
In matrix form, write the coordinates of each image of the triangle with vertices A(3,1) B(2,0), and C(1,5).
27.A translation 3 units l…
 updated 3 months ago
 8 replies
 1 Medal
Mathematics

melbell12:
Group Title
The SAT scores of entering freshman at University X have a N(1200, 90) distribution.
 updated 3 months ago
 1 reply
 No Medals Yet
Mathematics

neoc:
Group Title
Need some help with Stat question
 updated 3 months ago
 6 replies
 3 Medals
Mathematics

love_to_love_you:
Group Title
Please help! Will fan and medal.
Find the variables. Show work.
 updated 3 months ago
 25 replies
 2 Medals
Mathematics

amyyy:
Group Title
Suppose that the average number of people log in to a particular web site is 5 per minute.
What are the mean and variance of the distribu…
 updated 3 months ago
 2 replies
 1 Medal
Mathematics

kreimer20:
Group Title
Determine if the series converge or diverge. If they converge, what value do they converge to?
Sum of {((1)^n *2^(3n6))/5^(2n+1)} with t…
 updated 3 months ago
 10 replies
 2 Medals
Mathematics

ikram002p:
Group Title
deriving a formula , finding \(\beta_0 , \beta_1\) .
for population model …
 updated 3 months ago
 12 replies
 2 Medals
Mathematics

DarkBlueChocobo:
Group Title
explain the relationship between air resistance and gravitational acceleration on a falling object
 updated 3 months ago
 4 replies
 1 Medal
Mathematics

KendrickLamar2014:
Group Title
After defining the scope of the system, the next step is to
A. Plan the project …
 updated 3 months ago
 8 replies
 1 Medal
Mathematics

helpthegirll:
Group Title
What is the solution to the system of equations represented by the two equations?
y= 3/2x
…
 updated 3 months ago
 6 replies
 1 Medal
Mathematics

acomer3:
Group Title
find all of the first derivatives of f(x,y,z) =xsin(yz)
 updated 3 months ago
 4 replies
 4 Medals
Mathematics

huntervike:
Group Title
d/dx sin^2(2x^4)
 updated 3 months ago
 2 replies
 No Medals Yet
Mathematics

pty507:
Group Title
For the Experiment, flip a coin until heads shows, assume that the probability of heads on one flip is 3/5 we define a RV X= the number of f…
 updated 3 months ago
 3 replies
 2 Medals
Mathematics

Andresfon12:
Group Title
For the Experiment, flip a coin until heads shows, assume that the probability of heads on one flip is 3/5 we define a RV X= the number of f…
 updated 3 months ago
 4 replies
 1 Medal
Mathematics

dc104:
Group Title
OLS estimator derivation with constant
 updated 3 months ago
 26 replies
 1 Medal
Mathematics

ToxicInsanity:
Group Title
For which operations is the set {0, 1} closed?
Choose all answers that are correct.
…
 updated 2 months ago
 4 replies
 8 Medals
Mathematics

gerryliyana:
Group Title
Prove: If A is an nxn matrix then det[adj(A)] = [det(A)]^(n1)
 updated 3 months ago
 6 replies
 3 Medals
Mathematics
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