visoth

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

Questions

The following questions were asked by visitors named visoth.

a uniform meter stick of mass 100g is pivoted about the 30 cm mark. a mass of 200 g is placed at the 10 cm mark. where should a mass of 50 g be placed so that the meter stick balance horizontally?

a car traveling at 30 m/s loses a tire. the tire rolls to a hill which it begins climbing without slipping how high up the hill will the tire climb?

equation F = mv^2/r i don't get why the velocity is squared can anyone explain? this is waves on strings

equation F = mv^2/r i don't understand why velocity is squared can anyone explain. this is waves on string

1) equation; sum= (1-(1+i)^-n / i 2) equation; sum= r(1+i)^-1 + r(1+i) ^-2 + r(1+i)^3 +...+ r(1+i)^-(n-1) + r(1+i)^-n im suppose to simplify second equation into the first one but im messing up somewhere if anyone can tell me the first 3-4 steps i think i...

differentiate x(x-3)^2 do I product and chain rule?

Answers

The following answers were posted by visitors named visoth.

probability, ratio etc

what exactly is the question looking for? tension in the wire?

what unit is the 3/10 in

the area of a parallelogram is found by the formula A=BH with your information we have 58.2=B*9.7 just use algebra to figure out the base. ie divide 58.2 by 9.7

this is a guesss and solve problem... they gave you the equation just pick an answer and plug the first number in that answer for x in the equation and solve for y, if the solution you get for y is the same as the second number in the answer you pick that...

a) (1/3)x-1=1 the answer is 6 i don't have a calculator handy so i cant really do b

answer is 27a^3+27a^2+9a+1 you should be able to do this but if not ill explain what i did first i used box(you can use foil technique if you want) and got 9a^2+6a+1(thats what i got from multiply 3a+1 against itself) then i took that answer and multiply...

(x+4) and (x+5)

there not connected you can have gravity without air

it should be 30- 1 1/2 the way damon has it setup is to check your answer

omg thank you i forgot about kinetic energy and potential energy

2^3 is 8 and i think the second one is B^-12 im not ppositive though

i meant to say 2x + 3

are you sure the first number is a 7 for y?

first solve out parenthesis and bring the 3 to the other side which will give you 4w^2+4w-3=0 factoring the polynomial will give you (w-2) and (w+4) set them both to zero and solve it and then plug each answer back into the original polynomial to see if t...

oh yea i didn't factor out correctly so yea im too lazy to figure out the correct factor so you can do that yourself

im assuming oyu saying cos75 degree as a simple fraction; cos(75)=cos(45+30) recall the formula cos(a+b)=cos a cosb- sin a sin b cos(45+30)=cos(30)sin(45)- sin(30)sin(45) cos(45+30)=((sqrt(3))/2)((sqrt(2))/2)-… cos(45+30) =(sqrt(6)- sqrt(2))/4

his way correct i just want to point out you should do PEMDAS so you can get use to using it

im assuming there was a figure with this problem we kidn of need the figure to solve or at least the info on it, ir are we suppose to assume that she had zero dollars? and how much is she saving each time etc there too many stuff missing

torque = I(moment of inertia) times angular acceleration(change in angular velocity over time) change in angular velocity over time simply put is velocity final - velocity intial divided by total time that's all im doing for you,you should get it form tha...

if i may say it would probably be easier and less complicated if you had follow PEMDAS instruction which tells you to take the equation on the left 9(x-5) and multiply it out first instead of dividing the two equation by 9. that way you get 9x-45=4x-5, su...

im not positively sure bc its been awhile but i think everything in the parenthesis will be raised to the 3: 2^3x^3 + 3^3y^3 giving you 8x^3 + 27y^3

14x-4 i don't remember the exact way either but for this problem i made x the number of week and y the balance and then i look to see what the difference in balance was weekly, and it turn out ot be 14 i made that my coefficient (14x) and then i plug in t...

dude this site is to help people who is seriously having problems with some of their hw not a give me all your homework problems so i can do them for you, this site needs a report button because of people like you.

2/6=x/60 cross multiply gives you 120 = 6x divide by 6 will give you x= 20

2/6=x/60 cross multiply gives you 120 = 6x divide by 6 will give you x= 20 if you want a percentage i think you just take the 20/60 and put it = to x/100% and do the exact same thing

technically shouldnt it be 46 leaps since 45 leaps he will be tied with tthe dog

you just solve it out if its a negative number ignore the sign, 9i e if its negative 3 the absolute value is a 3) x- 1/3= 1/2x + 1/6 multiply both side by 2 to get; 2x - 2/3 = 1/6 and then plus 2/3 to both side to get; 2x= 5/6 and then divide both side by...

or if your teacher is a real stickler it would be .4167

basically when it ask for absolute value it is asking for how far from zero it is, the reason absolute values never have a negative is becauase there isnt a direction associated with them.

area= 1/2 BH just triple the numbers you have for base and height and then plug it in

you have the equation already quit being lazy

factor it and solve ; what i do is ignore the negative in front of the x^2 for now giving you x^2 + 2x +15 take 1x from the x^2 and multiply it with the 15 giving you 15x. now figure out which to numbers multiply to make 15 (there is only 1 x 15, and 3 x...

p(t) same as f(x) basically just put in 14 for 7 in the equation but don't put it in for the t in p(t) solve out and that is your answer p(t)=-16(14)^2 + 64(14)

oh whoops i read the question wrong scratcch that

oh okay here it is sorry about the above; p(t)= - 16t^2 +64t 14= - 16t^2 + 64t bring 14 to other side and factor or use the equation -b = or minus square root of (b - 4AC)and divide by 2A and you should get what t is

how did you get 3 numbers?

i already solve this problem somewhere but ill do it again you can either factor or use quadratic formula (-b plus or minus the square root of b-4AC and all of that divided by 2A) if you factor ignore the negative on the x^2 multiply the 1 x from x^2 time...

lol thanks steve when i was doing it i completelyforgot about the 4 in front of the 4w^2

bring the 64 over so you have y^2 - 20y + 36 im not sure if you can factor this so just use quadratic formula

stop homework dumping

dont homework dump

exactly what did you want ?

shouldn't have answer such a basic question for her it feels like she not even trying by posting something this simple

you can do this yourself you have the formula just plug in all the numbers you have into correct area

the x intercept is when the line crosses the x axis(y will be zero) and same thing for y(except it crosses the y axis and x = 0) make for x intercept make y (0=3x^2 + 9x -1) and then factor or use quadratic formula(you can look up the formula if you don't...

i mean to say for x intercept make y equal zero (0= 3x^2 +9x-1)

i already answer this but you can pretty do this problem if you read the question carefully it gives you exactly everything you need.

and label the subject next time posting a question so others know what you need help with

i think it would sound better if you change it to A lifelong memory many of us share is the moment we obtained a driver's license

if you square it you get d^2 +14d+49 but that is redundant because when you factor its just d+7 still so just take d+7 and set it equal to zero and d=-7

for number 1 its 5x-6=69 not 6-5xy=69 because 6 is being subtracted from the number not the number is being subtracted from 6 and its not xy cause its only 1 number

you don't need our help with this just read it real slow and write on paper

did you forget to put in other info?

stop homework dumping

use the quadratic formula(look it up yourself)

are you asking to solve for (3x -1 ) squared= 2 ?

if so then just use foil or box technique to multiply (3x -1) against itself to get 9x^2 -6x +1 = 2 subtract 2 from both side to get 9x^2 - 6x -1 = 0 and then use quadratic formula to solve for x because i don't think you can factor this unless missing so...

Force=mass time acceleration newton second law force= 50 N, acceleration equal 2 m/s^2 we want the mass on a side note N(newton and its units are kg m/s^2, im giving oyu this so you can see how the units will cancel out and give you only weight units for...

are you saying everything is like this 0.5x^3 + 0.4^3 - 0.1^3 ? if so just do it like simple adding and subtracting .5+.4 is 0.9x^3 -0.1^3 that becomes 0.8x^3 when adding or subtracting variables with exponent keep all exponent the same

1) rewrite cosx (cosx/sinx) + sinx = csc x 2) cosx^2/sinx + sinx = csc x 3) multiply sinx by (sinx/sinx) to get same denominator this gives you cosx^2/sinx + sinx^2/sinx = cscx 4) combine your fractions (cosx^2 + sinx^2)/sinx = cscx 5) rewrite numerator 1...

its okay i just wanted to make sure i had your question right

no problem lol this one almost had me stump for alittle

i got 17.05% you might have put in one of thenumbers wrong check again

6a +54 all you had to do was multiply everything in parenthesis by the 6 so 6 times a is 6a, and 6 times 9 is 54 giving you the above answer

volume=1/2*length*width*height put in the numbers into the equation and just get length by itself to solve for it and the bases is the width

Psydag is corret but he messed up a little when you multiply right side by 2 you would have gotten -4y = 3 + 8y - 12 not -4y = 3 + 4y - 12 so you would have subtracted 8y instead of 4y from both side giving you -12y= -9 and imma leave you to take it from...

are you saying for one you are trying to prove that cot theta = 1/tan theta? if so (imma change theta to x so it doesnt become a mess of words) cotx becomes cos x/ sin x so you have (cosx/sinx)= 1/tan x mutiply both side by tan x giving you (tanx) times (...

factor it our use quadratic formula (i would do both so you get practicce in both sicne some polynomial are factorable so oyu will have to know how to use wuad formula) this isn't factorable so use quad formula which is -b + or - square root of (b^2 - 4AC...

imma teach you how i learn to factor tak the x^2 and multiply it with the 20 giving you 20x^2 now figure out all the numbers that multiply to equal 20 which should be 4 and 4, and 1 and 20 now out of those 2 choices which one adds up to equal 9 (bc there...

okay just equation 1 has b= a - 4 we can plug in a- 4 for b in equation 2 to give you; 2a - 3(a - 4) = -2 2a - 3a +4= -2 -a + 4 = -2 -a = -6 divide by negative 1 to make a postive a= 6 now you can plug in 6 into either equation to solve for b but i would...

i hope that helps if your confuse about anything with the above solution just ask and ill try to clarify

just substitute 3a-2 for b in the equation 8a + b 8a + 3a -2 combine your like terms to get 11a - 2 and that's your answer if you want a just set it equal to zero

this is a homework help site something we wont be able to help you with something like this

(9/10) = (x/80) cross multiply 10x=720 divide by 10 x=72

first figure out the difference between the numbers in x for x they go up by 2 s we know we have 2x plug in any of the x number from above (lets do 2) 2 times 2 is 4 but in the above number sequence you gave us the y number that correspond to x=4 is 5 so...

dont just solve for him show him how he can do it joei you know you want 4/6 of 18 so lets say x is the number that you are searchign for x/18 = 4/6 cross multiply, meaning x times 6 and 4 tiems 18 giving you 6x= 72 and then divide by 6 on both side so 6x...

first put it in slope intercept form y=mx +b m is the slope and b will give you the y intercept y-9 = -2(x-8) multiply everyting in the parenthesis by -2 y-9= -2x + 16 and then plus 9 from both side y= -2x + 25 your slope is -2

(35%/100%) times (x/850) cross multiply 29750 = 100x divide by 100 x= 297.5 x is the number times he will reach base

im assuming its just a regular number cube with 6 numbers there are only 2 odd numbers above 1 ( 3 and 5) so the ratio is 2/6 you want to know how manny times (x) will you roll those numbers out of 78 roll the ratio is x/78 multiply (2/6) = (x/78) cross m...

first find out exactly how much of each you have with simply ratio cross multiplication (x/48)=((5/12) 240= 12x divide by 12 gives you x = 20 (x is blue marbles) (1/2)= (y/48) 2y= 48 y= 24 so he has 4 more yellows

d(t)= 12 so you have 12= 12 + 3t -t^2 minus 12 from both side 0= -t^2 + 3t factor to get (-t +3 and t + 0) put them equal to zero and solve for t= 0 and 3 your answer is 3 because zero seconds mean no distance

tan = -10 sqrt2/ -10 sqrt 2 becomes tan=1 which is 45degree

is the equaton suppose to look like this (x/2x) + 1 + 1/4 = (2/2x) + 1 ? if it is then what you do is simplify ffirst (x/2x) = 1/2 cause x cancel (1/2) + 1 +(1/4) = (2/2x) + 1 and (2/2x) =(1/x) (1/2) + 1 + (1/4) = (1/x) + 1 1 + (3/4) = (1/x) + 1 subtract...

you have to get a common denominator to add or subtract fractions

6x^9 -36x^2 -35x^7 + 30 is what you should have gotten second equation using foil

oh wait correction i read it wrong you have it right sorry

205/902 - 22/902 = 183/902 902 is the common denominator not 22 this is how i got it there is no number that goes evenly into 22 and 41( without a decimal being left) so i multiply (5/22) by (41/41) and (1/41) by (22/22)

there many way to do this i liek to change it all to improper fraction first 2 3/18= 39/18 ; 5 3/12= 63/12 ; 4 2/4= 18/4 so you have: (39/18) + (63/12) - (18/4) and then follow order of operation PEMDAS(remember you need common denominator to add or subtr...

9 roses and 6 lilies all i did was divide both number by 8 to figure out how many of each will go in each bouquet

yea what reiny said

what that means is that they want each bouquet have the exact same number of roses in them, and that each bouquet has to have the exact same amount of lilies ( like bouquet 1 cant have 2 roses when bouquets 2 only has 1, bouquet 1 cant have 6 lilies when...

2.25 all you do to turn a percentage into decimal is mnove decimal 2 places to the left

multiply x - 16 by itself (x-16)(x-16) x^2 -32x + 256 = 64 subtract 64 from both side x^2 - 32x +192=0 factor or use quadratic formula

its factor is (x -8 and x-24) set equal to zero and solve for x

take (9/5) multiply it against (x/100) to get 180% and then move over 2 decimal place to the left to get oyur answer