Mathematics

Help with this Calculus problem

I was sick recently and had to miss school. My Calculus teacher gave me a worksheet to practice for our next quiz, but I wasnt there when we learned the material so I dont know how to do some of these

Suppose that x=x(t) & y=y(t) are both functions of t. If y^2 + xy - 3x = 1, and...(see below)

dy/dt = 1 when x = 3 and y = -5, what is dx/dt? PLEASE HELP!-... y² + xy - 3x = 1 .......... (1) Diff... w.r.t. t, by Chain Rule, ... (2y). (dy/dt) + [ x.(dy/dt) + y.(dx/dt) ] - 3.(dx/dt) = 0 Put

If theta equals -7pi/4 then..

what is ... sin___ cos___ tan___ sec___ ? please help!-sinθ=1/√2 cosθ=1/√2 tanθ=1 secθ=√2

Calc QUestion!!!! Need help on graphing

I messed up on the graph need a lil help on what i did wrong thanks. :) http://www.flickr.com/photos/54816444@N02/6209762252/-What you sketched is the graph of z = sqrt(x^2 + y^2), but your given equ

Find the vector that is orthogonal to both u and v

u = (1,1,-2) and v=(2,-1,2) I took the cross product and got (0,-6,-3) What do I do now?-Assuming you calculated the cross product correctly, which I have not checked, the vector you have is orthogo

Algebra I, Literal Equation help

So I need help on literal equations... We just started today, and I went to do my homework, but I cant do it if I dont understand it. I understand the ones like this; 7t + x, for t t = x/7 r = wp, f

Differentiate f and find the domain of f

f(x) = x / (1 − ln(x − 9))-1)Domain:You cannot take the ln of a non-positive number, so x-9 > 0 Therefore x > 9. In addition the denominator cannot be 0, but that would happen when ln(x-9) = 1 In t

By means of infinte geometric series, write 0.277777777..., and 3.455455455... as fractions.

I have tried a million times, but still cannot get the right fraction. Please get the answer with the infinte geometric series method, as more than one method will only confuse me more at this point.

Need a jump start on a word problem

Separate $216 into two parts so that one part is three times the other.-x + 3x = $216 4x = $216 x = $54 3x = $162-x + 3x = 216 4x = 216 x = 54 and 162-54 and 162 my 10 point for best answer plz :D

Radical equations, solve

√y-2 = y-2 (Squared root symbol isnt only for y, goes for y-2.) y=? y=?-square both side ---> y = 2 or 3

How do i find the slope of a tangent line when it just gives me an ordered pair of (3,3)

estimate the slope of the tangent line to each curve at the given point (3,3)-They also gave you curves (which you did not give us). estimate the slope of the tangent line to *****each curve****** at

Math help? Quadratic Relations

zeros are -1 and 7, a point on the graph is 3,5 write the equation in standard form. starting with y=a(x-s)(x-t) I understand how to get a so a is -5/16 but i always simplify it wrong. Help?-(x+1)(x-7

Ratio and Proportion, is the book wrong

2500 m to 25 km I get 1/100 the book gets 1/10.If the book is right please show how to get 1/10.-2500 m = 2.5 km. Dont get confused by changing units.-= 2,500 m is to 25 km = 2,500 m is to 25,000 m

Need help figuring out what i did wrong? Calc

I got Minus 3 on this problem and im not sure what i did wrong any help would be wonderful. i know its something simple i just cant seem to figure it out. http://www.flickr.com/photos/54816444@N02/62

HELP WITH ALG 2 WORD PROBLEM? ALG REVIEW

Damariay is draining 2 aquariums. The tanks are the same size. One tank has 7 in. of water. Its being drained at a rate of 1 in./min. The other tank has 5 in. of water. Its being drained at a rate of