Friday
April 29, 2016

Posts by collins

Total # Posts: 289

Pre-Calc
log(ab)=loga+logb log3x+log[3(x-2)]=1 log[(3x)(3x-6)]=1 (3x)(3x-6)=10^1 9x^2-18x-10=0 find x and see if you would arrive at that
April 19, 2016

Algebra
telling you there is a total let the width 10w^2+10w*4=1050 now solve for w
April 19, 2016

Algebra
telling you there is a total let the width 10w^2+8w*4=1050 now solve for w
April 19, 2016

math
reciprocal of -1/6 =6 and that of 1/2=2 a=-6 b=2 a+b=x -6+2=x x=-4 y=a*b y=-6*2 y=-12 z=2(a)/b z=2*-6/2 z=-6 now x+y+z=??
April 19, 2016

Math-easy you can do it
you can do that just 6-17=???
April 19, 2016

Math
use these formulea a^2=b^2+c^2-(2bcCosA) then to get angle C sinA/a=sinC/a...(1) to get angle B sinB/b=sinC/c....(2) there you go a big hint
April 19, 2016

Physics-huh? where
Physics-huh? i can,t see any problem to try them if i can..
April 19, 2016

math area-poor reading
ooh i did not read that poor reading yeah
April 19, 2016

math area
A=Lw A=4*30 A=120square unit
April 19, 2016

Further maths
from sir steve work remeber that 6th term is 6th term=a+5d =24+5*8 =64
April 19, 2016

Math-noop
x/4+2x/20=700...mucg easier now rit? just find x
April 19, 2016

Math-it should have been (1/4*2/5)
i made a i little error in my previous post here (1/4)x+(1/4*2/5)x=700 solve for x
April 19, 2016

Math
(1/4)x+(1/4*1/2)x=700
April 19, 2016

Math-sorry dx/dp
oops dx/dp not dy/dp
April 19, 2016

Math
if it's derivative take the 'p' as a constant dy/dp=2x-4p
April 19, 2016

Math-?? what? typo!!
hey what do i do with typo i think
April 19, 2016

typo!!oops
sorry i made a typo i mean u not m
April 19, 2016

calculus
if sin^6(x)sin(x)dx...(1) then let m=cos(x) dm/dx=-sin(x) dm=-sin(x)dx input 1 into 2 (1-cos^2(x)^3)sin(x)dx (1-u^2)^3-du -(1-u^2)^3du -[1-3u^2+3u^4-u^6) [-1+3u^2-3u^4+u^7) now just integrate and input your 'm'
April 19, 2016

math
khalid=k daughter=d first statement k=4d...(1) second statement (k-10)+(d-10)=60. k+d=60+20 k+d=80...(2) plug 1 into 2 and there you go
April 19, 2016

calculus very hard help
you are welcome read out calculus made easy on schaum's outline these book was recommende to me by my favorite tutor here STEVE...that book is a life saving one if you can not get one locally use amazon..steve favorite statement google is your friend try it out
April 19, 2016

calculus very hard help
hmmm lets see using demovire theorm z+1/z=2cosx and z^n+1/z^n=2cosnx in our case 2cosx=(z+1/z) pascal triangle (z+1/z)^10 from left to right are 1,10,45,120,210,252,210,120,45,10 and 1 the coeffient now 1st,2nd---last 1st term:z^10 2ndterm:10z^9(1/z)=10z^8 3rdterm:45z^8(1/z)^2...
April 19, 2016

maths surd
let a=2+sqrt(3) b=2-sqrt(3) but a=((2+sqrt(3)^2) b=[(2-sqrt(3)^2] a^2=(2+sqrt(3))^2 =(2+sqrt(3)(2+sqrt(3)=7+4sqrt(3) b^2=(2-sqrt(2)]^2 =(2-sqrt(3))(2-sqrt(3) =7-4sqrt(3) but (a^3+b^3)=(a+b)(a^2-ab+b^2) a+b=7+4sqrt(3)+7-4sqrt(3) a+b=14 ab=(7-4sqr(3)(7+4sqrt(3) ab=1 a^2=(7+4sqrt...
April 18, 2016

maths
thats in standard form 4.09726*10^5 and then and i thinks these is the expand notation 400000+9000+700+26
April 18, 2016

Math
or you mean since a^b.a^a=a^b+a then 5^3.5^1=?
April 18, 2016

Math-do that!!!
can,t you do normal multiplication? you should be able to do that
April 18, 2016

Math
just normal indices rule a^b/a^a=a^(b-a) with that hint play around with your question
April 18, 2016

Algebra-no it's not!
see (x^2+2x+1)/(x^2+1) ((x^2+x)+(x+1)]/(x^2+1) x(x+1)+1(x+1)/(x^2+1) (x+1)^2/(x^2+1)....What i see
April 4, 2016

math-question?
Uhun what your question!!!!
March 23, 2016

Physics
wow got to right the question and solution down
March 23, 2016

division and remainder...error ws from my teacher not me
thats the real question
March 23, 2016

Math
i think the question was post before and sir steve answered i rember fully well he said such reflection move from (x,y).....(-x,y)
March 22, 2016

math
5000-600=4400/4=1100gram
March 22, 2016

direct variation...not enough info!!!!!
not enough info how can i find my constant see y=k(0.3)....see what i mean
March 22, 2016

direct variation
not enough info how can i find my constant see y=k(0.3)....see what i mean
March 22, 2016

opps!!! math
yeah your are right thanks
March 22, 2016

math
wait do you mean to solve foy 3(2^y-1)=2^y+4 6^y-3=2^y+4 apply natural log log6^y-log3=log2^y+log4 log6^y-log2^y=log4+log3 ylog6-ylog2=log4+log3 y(log6-log2)=log4+log3 y=(log4+log3)/(log6-log2)....... not sure how you wanna keep on beaten these you can simplify from there
March 22, 2016

math
here u go as u=2^y.... plug in 3(u-1)=u+4 3u-3=u+4 3u-u=4+3 2u=7 u=7/2 now to solve for y apply natural log 2^y=7/2 log2^y=log(7/2) ylog2=log7-log2 y=log7-log2/log2=? or even y=log7/log4
March 22, 2016

math? not enough!! i bet
not enough information!!!! please recheck
March 22, 2016

health part 2
No right anser is C it recur less
March 22, 2016

Math
using phythagoras theorm (x+8)^2=x^2+(x+7)^2 x^2+16x+64=x^2+x^2+14x+49 16x+64=x^2+14x+49 x^2+14x-16x+49-64=0 x^2-2x-15=0 (x+3)(x-5)=0 x=5........
March 22, 2016

maths
a+6d=12.......(1) a+20d=68......(2) solve by elimination a is gone 14d=56 d=4 a+6*4=12 a=12-24 a=-12 68 term=a+67d=? that reminds me the equation i use to solve is nth=a+(n-1)d
March 22, 2016

maths insufficient info!
formula for average speed=total distance/total time A=[(60+90)km/h]/no time? insufficient information
March 21, 2016

Math
sweet correct
March 21, 2016

Pre Algebra@summer?
where is your table?????
March 21, 2016

math
0,1,2,3,4,5,6,7,8,9 pick out the odd number remeber that possible outcome/total required outcome=odd?/9 here you go
March 21, 2016

Math
?? what your question
March 21, 2016

pre Algebra
y=-(3x+8) that should be it
March 21, 2016

Pre Algebra
E(c)=15c sorry for my typo yes am sure
March 21, 2016

Pre Algebra
f(-2)=(-2)^2-3(-2)+2 =4+6+2=12.... E(c)=15E .......
March 21, 2016

Trigonometry?
do you want to simplify? sinacosa(sina/cosa+cosa/sina) sinacosa[(sina)^2+(cosa)^2]/sinacosa (sina)^2+(cosa)^2.........
March 21, 2016

Physics
sin=7/20 sin^-1=(0.35)=?
March 21, 2016

Maths
i just did i without solving ob paper it was a typo okay
March 21, 2016

Maths
y=mx+c...... m=y2-y1/x2-x1 m=4-3/-1-2 m=-1/3 at any point i pick p(2,3) y=mx+c 3=(-1)2/3+c -9=-2/3+c -9+2=3c -9+2/3=c c=-7/3 now y=mx+c.......crack out the equation
March 21, 2016

question !!!
thanks but,is there any one for algebra advanced world problem and logarithms?
March 21, 2016

question !!!
sir steve have been looking for that book you said i should buy over the net the whol,night to get,the raw file study them but i could not see can you direct me to,a,link
March 21, 2016

math
can that really be done because 33(1/3)%=33/3*100=3300/3=? and see if you get a fraction
March 21, 2016

Math
[-4*2(2x+5)] -8(2x+5).....now just expand
March 20, 2016

Maths
x(x+2)=12+x^2
March 20, 2016

huh? typo i bet!!!
having being looking at this question for a while it imposible to find the third side unless at least angle is given...typo i guess
March 20, 2016

Math
wow learning new thing everyday here God bless you steve
March 20, 2016

Math
where you give a range of value?...or do you have a table already? can i see it in row if you have
March 20, 2016

logarithm help!!!!
got it i will do as you say sir
March 20, 2016

logarithm help!!!!
i study different thing everyday sir
March 20, 2016

logarithm help!!!!
k/k^5=logk find k
March 20, 2016

expansion help!!! maths
wow thanks sir
March 20, 2016

expansion help!!! maths
write down the expansion of (1+x-x^2)^6 in Ascending other please show full working!
March 20, 2016

algebra
huh? do you mean solving by matrix crammers rule?
March 20, 2016

Physics
w=f*X since it horizonal they won,t be friction
March 20, 2016

math-i don,t get!!!
i don,t get your question
March 20, 2016

binomial expansion help!!!
screw down sir there is a question on parametrization and explain well better although sir steve has done much explanation but i wanna get more ideal
March 19, 2016

binomial expansion help!!!
got it thanks
March 19, 2016

sir damon confused alert!!!
what how did you got 72 what happen to the k
March 19, 2016

binomial expansion help!!!
in the expansion of (1+x)^(n+1) the coefficient of x^4 is 6k and in the expansion of (1+x)^(n-1) the coefficient of x^2 is k.find the value of k and n, for n>2???
March 19, 2016

Math
area of a sphere=4(pi)r^2 volume=(4/3)(pi)r^3 now equate them and solve for r then diameter=twice of r
March 19, 2016

math
a-broot(7)=(2)^2-root(7)^2+roo(7) a-broot(7)=4-7+root(7) a-broot(7)=root(7)-3 now just compare the coefficent a=? b=?
March 19, 2016

yeah
ooh yes yes very correct i know that
March 19, 2016

math
3x^2-x-9=a(x+2)^2+b(x+2)+c compare coefficent now a=? b=? c=?
March 19, 2016

math
yeah i read perimeter.....you right
March 19, 2016

math
diagonal=[5-root(12)^2]+(10/root(3)^2 corrected......Now solve
March 19, 2016

math
area=2(L+B) A=2[(5-root(12)+10/root(3) A=2[(5-root(12)]+10/root(3) A=2[(5-root(12)root(3)+10/root(3)] A=2[(5root(3)-root(36)+10/root(3) A=2[5root(3))-6+10)/root(3) A=(10root(3)+8root(3) A=18root(3)/3 A=6root(3)........ Diagonal=[5-root(3)]^2+10/root(3)^2 dere go just play with...
March 19, 2016

oops thanks i did not see that
oh yeah i did not see that thanks.....
March 19, 2016

mathematics-logarithm
not that dificult logx^2=-8 x^2=3^-8 x^2=3^(-2)^3 power 2 cancel out we have x=3^-3 x=1/3^3 x=1/27
March 19, 2016

Math
the prime number from 1-20 is 8 and perfect square is 4 8/20+4/20=12/20 now reduce to the lowest term
March 19, 2016

oops! error
pr(prime number or perfect number)=addition
March 19, 2016

Math
1,2,3,4,5,6,7,8,9,10,11,12,13,14,14,16,17,18,19,20 now bring out the prime number and that of perfect square and don,t forget the total outcome is 20 now pr(P or E)=additional
March 19, 2016

chemistry
the molecular formula i think it C5H10
March 19, 2016

Calculus (Line Integral)
hmmm i got to write these down wow
March 18, 2016

sir steve interven also wanna learn these
am not even conversant with those .....i don,t know
March 18, 2016

math
if building A have 8 more storey building the B A=8+B..... what building have 2more than half?
March 18, 2016

another integral...help
integrate:xtan^-1/(1+x^2)^2....working plz
March 18, 2016

integration i need
integration i need help integrate:(1-e^x)^5/e^4x..plz show full working
March 18, 2016

math
what is radical? do you mean square root if yes then it is clearly 5....
March 17, 2016

mathematics
from diagram sin=5/13=0.3846 =22.6 now angle at center is twice the angle at any point of the circumference 22.6*2=45.2 sin45.2=5/r now find r
March 17, 2016

Geometry
c:m=9:6=3:2
March 17, 2016

maths
a die has six faces rit when it is rolled twice you get 2/36=? you can also use sample size okay
March 17, 2016

maths
log(18*8/12*12) log(144/144)=?
March 17, 2016

accounting
??
March 17, 2016

Math
??
March 17, 2016

math
just calculate for the distance betwee two point that just it
March 17, 2016

Math
5/100=1/20 12/100=3/25 1/20+3/25=???
March 16, 2016

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