Monday

September 26, 2016
Total # Posts: 304

**Math**

f=26+b...(1) (b-3)=1/3(f-3) 3b-9=f-3 3b=f-3+9 3b=f+6 3b-6=f 3b-6=26+b 2b=26+6 2b=32 b=16 F=26+16 f=42

*June 5, 2016*

**Math**

sorry it should be 15/t-20/t=8/60

*June 5, 2016*

**Math**

speed=distance/time 20=d/t 20t=d t=d/20 and 15t=d d=15/t so amy finish 15/t-20/t=8/20 find t then you can get their distance

*June 5, 2016*

**College Algebra-suggested solution**

solve each equation? hmmm-well Suggested solution log3^n+log9=log69 log3^n=log69-log9 n=(log69-log9)/log3 find n then round up

*May 25, 2016*

**Algebra**

use y=mx+c now x1=4 and x2=-1 y1=-3 and y2=1 x1=4&y1=-3 sub into equation of the line -3=m*4+c 4m+c=-3...(1) now x2 and y2 1=-m+c -m+c=1...(2) subtract 2 from 1 5m=-3 m=-4/5 when perpendicular it is now 5/4

*May 24, 2016*

**Pre-Algrebra**

i would be very happy to help if you would show me your suggested answer...

*May 24, 2016*

**still the same -algebra**

see [(42(x^2)-4pi(x^2)] 21*2(x^2)=42(x^2) rit? 2*2(x^2)pi=4(x^2)pi rit? [(21*(2x^2)-(2x^2)*2pi)] bring (2x^2) out you get (2x^2)(21-2pi) do you undestand now

*May 24, 2016*

**math**

a+b=76...(1) a-b=38......(2) adding 1 and 2 together you get a+b+a-b=76+38 a+a+b-b=114 2a=114 a=114/2 a=57 plug a into any of the equation e.g 57+b=76 b=76-57 b=19 57-b=38 -b=38-57 -b=-19 b=19 i guess u meant a/b=57/19=3...

*May 21, 2016*

**Pre Algebra??**

what question???

*May 13, 2016*

**Pre- Algebra**

30/100*60=30*60/100=??

*May 11, 2016*

**Math**

you are welcome

*May 11, 2016*

**Math**

i agree with u so now can u solve it

*May 11, 2016*

**Math**

hmmm never mind u gave me a wrong formula A=p(1+r%)^n A=20000(1+5.5/100)^3 A=20000(1+0.055)^3 A=20000*(1.055)^3 now do what i told you recall that i=A-p

*May 11, 2016*

**Math**

what could be the problem plug in those value A=20000(1+5.5/12)^3*12 A=20000(1+0.4583)^36 A=20000*(1.4583)^36 Puch ur calculator for (1.4583)^36 And multiply by 20000 and wuehi we are done!!!

*May 11, 2016*

**mathematics**

draw a vertical line to represent the radio mast,and then a horizontal 53m away from the radio mast.and then also a diagonal line from the angle of elevation to the top of the radio mast then tan63=h/53 find h?

*May 11, 2016*

**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*