Precalculus Mathematics | Forum profile

I would try to translate what the problem says in words into equations. You're told that the distance from point A to point P is always 3 times the distance from point B to point P. So it seems to me that the way to proceed is to write down an expression for the distance from A to P and set it equal to the expression for the distance from B to P multiplied by 3.

see, that solved it. Thanks. I was doing (a-b)^2 = (a-b)(a-b)

DisplayAds("Right1"); If 28% of the objects in a box weighed 45 gm each and 72% of the objects in a box weighed 55 gm each, what is the average weight of the object. ----- The Average Weight of the Object = Total Weight / Total No. of Objects Total No objects 45gm => 45/x = 0.28 => x = 161 Total No objects 55gm => 55/x = 0.72 => x = 76 Is this even ...

DisplayAds("Right1"); 1. The problem statement, all variables and given/known data Solve ln(2x+1)=2-ln(x) for x. 2. Relevant equations 3. The attempt at a solution e^(ln(2x+1)) = e^((2-ln(x)) 2x + 1 = e^(2/x) 2x^2 + x = e^2 2x^2+x-e^2 = 0 At this point, I know you're supposed to use the quadratic equation. But, my ...

DisplayAds("Right1"); 1. The problem statement, all variables and given/known data 2. Relevant equations 3. The attempt at a solution

DisplayAds("Right1"); 1. The problem statement, all variables and given/known data find a polynomial of degree 5 whose coefficients are that has the zeros: 0, -2 i , 2+ i 2. Relevant equations none 3. The attempt at a solution I know that the two remaining zeros are: 2 i and 2- i the factors are: x x-2 i ...

DisplayAds("Right1"); 1. The problem statement, all variables and given/known data Determine whether the given set V is closed under the operations (+) and (.): V is the set of all ordered pairs of real numbers (x,y) where x>0 and y>0: (x,y)(+)(x',y') = (x+x',y+y') and c(.)(x,y) = (cx,cy), where c is a scalar, (.) = multiplication 2. ...

L= cot^2x-1/csc^2x =cot^2x/csc^2x -1/csc^2x =(cos^2x/sin^2x)/(1/sin^2x)-sin^2x=cos^2x-sin^2x=c os^2x-(1-cos^2x)=cos^2x-1+ cos^2x=2cos^2x-1=R Everybody gave you hints. Its been a while now. This should be your answer. Please correct if I am wrong.

DisplayAds("Right1"); Hey, is there anyone who can provide 2 graphical examples of either logarithmic or exponential functions relating to the real world. I've looked in many places and have given up. Please help. Thanks in advance

DisplayAds("Right1"); The probability of a customer arriving in a bank per minute is 0.9. How many customers will arrive in 10 minutes? Thanks Ashish