collins

This page lists questions and answers that were posted by visitors named collins.

Questions

The following questions were asked by visitors named collins.

the probability that a radomly chosen potential customer will make a purchse is 0.20if a sales man calls on 6 customers .what is the probabilty they will make exactly 4 sales

two regular polygons of the same number of sides have sides 5 ft. and 12 ft. in length, respectively. what is the length of the side of another regular polygon of the same number of sides, if its area is equal to the sum of the other two.

integrate secxdx

use the first principle to obtain the differencial coefficient y=1/(2x-1)

If y=2x^2-21x^2+60x+6 what is the value of x? dx^2/dy^2=0

In the figure, a radar station detects an airplane approaching directly from the east. At first observation, the airplane is at distance d1 = 350 m from the station and at angle θ1 = 31° above the horizon. The airplane is tracked through an angular change...

(2). Determine the velocity which a body released at a distance r from the center of the earth when it strikes the earth surface.

(1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of the earth (r>Re), where Re is the r...

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

integrate:xtan^-1/(1+x^2)^2....working plz

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???

write down the expansion of (1+x-x^2)^6 in Ascending other please show full working!

k/k^5=logk find k

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

Question. Find the greatest common divisor d of 159 and 51, and find integers x and y solving the equation 159 x + 51 y = d . Answer. d = 3. The extended Euclidean algorithm gives x = 9 and y = -28. (There are other solutions for x and y; these are not un...

explain the course of religious wars in buganda

Using elimination method solve 2/x-3/y=1, 8/x+9/y=1/2

A train at station P accelerate uniformly from rest until it attain a speed of 100 k/h. It then continues at the speed for some time and decelerate uniformly until it comes to a stop at a station, Q 60 km from P. The total time taken for the journey is an...

A body of mass 10kg is to be raise from the bottom to the top of an inclined plane 5m long and 3.0m off the ground at the top assuming a frictionless surface,how much work must be done by the force parallel to the plane pushing the block up to a constant...

Answers

The following answers were posted by visitors named collins.

1_b 2c 3d 4c 5d 6a 7c 8b 9c 10a

no idea but please help....

how do i get into dat site u recommended

I got 7/2 it is dy^2/dx^2 not dx^2/dy^2 here is the oda that got me confused find the value of the constant integration if (x^1/2+x^1/3)dx=0 at x=1

A=1/2bh 2a=bh b=2a/b easy

sory h=2a/b it was a typo

please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of t...

it definitely not an arithemetic progression nor a geometric progression take the come difference of an Ap and the ratio of a G.P Ap=3-2=1 gp=3/2 Ap=5-3=2 Gp=5/3 does it make any sense.....aren't they supose to yield the same result?????.

i wonder why that should be a problem recat the inverse of tangent gives contangent......thus 1/tan(a+b)=tan(a)+tan(b)-1/tan(a+b/) 1/tan(a+b)=tan(a)+tan(b)-1/tan(a)+tan(b) now divide through by tan(a)tan(b) 1/tan(a+b)=1/tan(b)+tan(a)/1/tan(a)+1/tan(b) thu...

let x be the total no of seat x=3/5 adult.....a children....c a/c=6/4.....(1) a+60=3c.....(2) a=6c/4.......(3) insert 3 in any and find a....when u do finding won,t be a problem right x=a+c....as total number

finding c i mean

let the hypotenus be x sin66=4/x x=sin66/4

just calculate for the distance betwee two point that just it

5/100=1/20 12/100=3/25 1/20+3/25=???

do u mean how fast it rain?.

log(18*8/12*12) log(144/144)=?

h=gt^2/2 g=not given

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

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

what is radical? do you mean square root if yes then it is clearly 5....

if building A have 8 more storey building the B A=8+B..... what building have 2more than half?

the molecular formula i think it C5H10

am not even conversant with those .....i don,t know

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

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

pr(prime number or perfect number)=addition

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...

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

3x^2-x-9=a(x+2)^2+b(x+2)+c compare coefficent now a=? b=? c=?

oh yeah i did not see that thanks.....

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=?

yeah i read perimeter.....you right

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

ooh yes yes very correct i know that

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

what how did you got 72 what happen to the k

hmmm i got to write these down wow

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

huh? do you mean solving by matrix crammers rule?

i don,t get your question

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

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

wow learning new thing everyday here God bless you steve

[-4*2(2x+5)] -8(2x+5).....now just expand

i study different thing everyday sir

got it i will do as you say sir

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

thanks but,is there any one for algebra advanced world problem and logarithms?

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

do you want to simplify? sinacosa(sina/cosa+cosa/sina) sinacosa[(sina)^2+(cosa)^2]/sinacosa (sina)^2+(cosa)^2.........

sin=7/20 sin^-1=(0.35)=?

f(-2)=(-2)^2-3(-2)+2 =4+6+2=12.... E(c)=15E .......

E(c)=15c sorry for my typo yes am sure

w=f*X since it horizonal they won,t be friction

i just did i without solving ob paper it was a typo okay

y=-(3x+8) that should be it

where is your table?????

?? what your question

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

formula for average speed=total distance/total time A=[(60+90)km/h]/no time? insufficient information

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

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........

No right anser is C it recur less

not enough information!!!! please recheck

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

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 si...

not enough info how can i find my constant see y=k(0.3)....see what i mean

yeah your are right thanks

5000-600=4400/4=1100gram

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)

thats the real question

wow got to right the question and solution down

Uhun what your question!!!!

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

just normal indices rule a^b/a^a=a^(b-a) with that hint play around with your question

can,t you do normal multiplication? you should be able to do that

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

or you mean since a^b.a^a=a^b+a then 5^3.5^1=?

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+4sqr...

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^...

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

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...

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'

sorry i made a typo i mean u not m

hey what do i do with typo i think

if it's derivative take the 'p' as a constant dy/dp=2x-4p

oops dx/dp not dy/dp

(1/4)x+(1/4*1/2)x=700

i made a i little error in my previous post here (1/4)x+(1/4*2/5)x=700 solve for x

x/4+2x/20=700...mucg easier now rit? just find x

from sir steve work remeber that 6th term is 6th term=a+5d =24+5*8 =64

A=Lw A=4*30 A=120square unit

ooh i did not read that poor reading yeah