Saturday
August 23, 2014

Posts by saiko


Total # Posts: 31

grade 6 honors math
as the summation 50+65+70=185 and some students chose none, so it is greater than 150 total students. so the sets can't be disjoint. there are students who took more than 1 elective.
April 5, 2013

math
48
March 28, 2013

Math Plz help
360*218/245 compute this it will give angle in degree
March 28, 2013

Algebra 2 ..
1> even factors of 4*5 =20 so the factors are 1, 2 ,4 ,5 ,10 ,20 among them 2,4,10,20 are even. 3> here 4 is the minimum no of +ve factors. n will have the factors, =1*n =p*q including 1 and n, n have minimum 4 factors. it could be more. ***for Q2 I have not understood.
March 28, 2013

science
where are the cubes??
March 28, 2013

math
multiple of 3 are 3,6 so the probability is 2/8
March 28, 2013

Math
so you have, (n-2)+(n-1)+n+(n+1)+(n+2)=2005 5n=2005 n=401 nos are, 399,400,401,402,403
March 28, 2013

physics
(1-1/3)*1*V=(1-3/4)*p*V p=8/3=2.6667 gm/cc
March 28, 2013

Quick Math Question
add them!! adding it comes 11 hrs subtract 11 from 12
March 28, 2013

Use the remainder theorem
remainder is=f(-2) f(-2)=2(-2)^6-8(-2)^4+(-2)^2-5 =-3 so (x+2) is not a factor of f(x)
March 28, 2013

Math
(47-32)*5/9 =8.333333333333 degree centigrade
March 28, 2013

Algebra multiple choice!
for 2 answer is <d> 1 is ok
March 28, 2013

Statisitics
P((x-72)/9)=90% (x-72)/9=1.28 [normal distribution table] x=83.52 83.52 at least for getting A P((x-72)/81)=10% (x-72)/81=-1.28 [normal distribution table] x=60.48 60.48 maximum for getting D for B, score is between 72 and 83.52 for C, score is between 60.48 and 72
March 28, 2013

Science
yes this is true.
March 25, 2013

Math
d>=51+12 d>63 or d=63
March 25, 2013

Applied maths-mechanics
the normal force on the block, mg-p*sin_theta along the motion, p*cos_theta=u*(mg-p*sin_theta) theta=30 u=.6 m=300 kg p*(.866+.5*.6)=.6*300*9.8 p=1512 N if p is individual of two force then, p=1512/2=756 N
March 25, 2013

physics
2.5 m from where? right end or left end?
March 25, 2013

probability
total arrangement=(6+3-1)!=8! with 2 girls sit beside, arrangement possible=3C2*(6+2-1)!=3*7! probability 2 girls always sit beside=3/8 answer=1-3/8=5/8
March 25, 2013

math
V=pi*r^3 dV/dt=3*pi*(r^2)*(dr/dt) dV/dt=.1 r=2 pi=3.14 dr/dt=?
March 25, 2013

mathematics
mean is calculated as the average value. summation of all values divided by number of values is mean. and median is the value present in the middle of a sequence of numbers.
March 19, 2013

college algebra
I am solving the first one.....second one you can try yourself. so 9x^4+4=13x^2 this can be written, x^2*(9x^2-13)=-4 as x^2 is always +ve so to be -ve, (9x^2-13)<0 we see that -(sqrt(13)/3)<x<(sqrt(13)/3) it comes as -1.2<x<1.2 next we will see if there is some...
March 19, 2013

Maths
he spend (1/4+1/2)=3/4 of his total money. so has remaining money=(1-3/4)=1/4 of total money. he had total money=$58*4=$432
March 10, 2013

Math
so kevin travels 50*60 meter/ hour that is=3 km/hr
March 9, 2013

English
correctio:: ....an easy access to search for.....
March 9, 2013

maths-perimeter
the area of the path that is running along the breath is= 450*5=2250 m^2 the area of the path that is running along the length is= 750*5=3750 m^2 but as the two roads cross each other in the middle if we just sum the two areas it would over-estimate the crossing area. so to ...
March 6, 2013

science
1> Phloem Transportation of food and nutrients such as sugar and amino acids from leaves to storage organs and growing parts of plant. This movement of substances is called translocation. Xylem Water and mineral transport from roots to aerial parts of the plant. 2> ...
March 6, 2013

probability
well you can understand it like, for one qusetion getting right, the probability is=.5 as there are only two options true and false. for two qusetion getting right, the probability is=.5*.5 for three qusetion getting right, the probability is=.5*.5*.5...
March 6, 2013

Trigonometry
2cos^2(x)=2-2sin^2(x) substituting, 5-2+2sin^2(x)-7sin(x) = 0 it comes as 2p^2-7p+2=0 where p=sinx solving p=13/4,1/4 as sin(x)<=1 so sin(x)=1/4 a=1 b=4 a+b=5
March 6, 2013

Calculus
at time 0 the position is (0,0) at any time t, the distance wold be, =sqrt((t-sint)^2+(1-cost)^2) =sqrt((t-sint)^2+(1-cost)^2) =sqrt(t^2+2-2(cost+tsint)) now integrate this from 0 to 2pi to get the answer. wolframalpha refer to the site to get ur integration done.
March 6, 2013

Math
1-cos(power 2)x= sin(power 2)x sin(power 2)x/sin(x)=sin(x)
March 6, 2013

Polynomials
taking the ininverse, (-x^2 + 2)/2x=-x/2+1/x so the answer is =1/((1/x)-(x/2))
March 6, 2013

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