Mathematics

Partial derivatives help

Given a function z=z(x,y) defined by equation sin(xyz) = x+6y+3z. I found dz/dx and dy/dx, its the next parts i am struggling with. find the values of Zx(x,y) and Zy(x,y) at the point (0,1,-2) on the

Use the quadratic formula to solve the equation.

3x^2 + 10x + 7 = 0-By ax² + bx + c = 0 form.. a = 3 b = 10 c = 7 So by quad. formula... x = (-b ± √(b² - 4ac))/2a = (-10 ± √(10² - 4*3*7))/(2*3) = (-10 ± √(100 - 84))/6 = (-10 ± √16)/6 = (-10 ± 4)/

Is dx/dy the same as x' or is it y'

x is short for dx/dy y is short for dy/dx

What is the inverse of the given relation

y=4x+16 this question is on my Algebra 2 final exam review sheet. I do not understand what the question is asking you. Can someone give me a explanation i dont need the answer just a starting point o

10 points Can YOU answer this little math promblem

Solve. y=3x+10 y=5x a. (5, 25)b. (-25, -5) c. (1.3, 6.3)d.(-5,-25) ***Just so you know I do know the answer.You can show work if you want :)-You can solve by substitution by replacing y. 3x+10 = 5

Algebra 2 help logs...

find log*4 64 x log*64 4please explain symbol *(subscript)-www.mathway.com-If your question is log(base4) of 64 times log(base 64) of 4, use the change of base formula; log64/log4 X log4/log64 (1.806

I can't solve this statistics problem. All I know is that it's a binomial problem.

The Center of Statistics for Health reported that 30% of adult Americans smoke. Consider a random sample of 150 adults selected randomly in this population. What is the probability that the number of

Simple derivative question

How do I find the derivative of this function by first simplifying? y= (x-a)/(sqrtx - sqrta) ; a is a positive constant. Thanks a lot! The answer is 1/2sqrtx Can someone briefly explain to me why x

Find the length of the rectangle.

The diagonal of rectangle measures 13cm. The width of the rectangle is 5 cm. Find the length of the rectangle.-diagonal = √(length² + width²) 13 = √(length² + 5²) 13² = length² + 5² length² = 13² - 5²

Business Math Help (10 points)

1. Goosen Department Store is searching for a person to head its human resources department. Goosen placed advertisements in newspapers all over the Southeast for a total cost of $5,432.34. Goosens in

Help with 2 Math Problems?? 10 pts!!

Either one you can do would really help! Explanations would help but not required. 10 pts!! To deliver mail, the Canadian Post Office uses postal codes beginning with a letter and alternating 3 lette

I put this integration problem on wolfram alpha

but cant figure out HOW they derived the partial fractions (the 3rd step)????? Can anyone please explain? Heres the link: http://www.wolframalpha.com/input/?i=int… incase the link doesnt work, my ori

What is the volume of the solid formed by revolving

the region bounded by y = 1/2(x-2)^2 and y = 2 about the y-axis. I get 64 pi/ 3 as the answer...and theres no way to verify this problem. Can some1 please try it?-Sorry it took me so long to get back

Parametrization is given for a curve

x = cos (t) y = sin (t) 0 (a) Graph the curve. What are the initial and terminal points, if any? Indicate the direction in which the curve is traced. (b) Find a Cartesian equation for the a curve t

Axis of symmetry question

I need help with this parabola question. A parabola with the axis of symmetry in the y-axis passes through the points (1,4) and (-3, -20). Determine its equation algebraically. Could someone give me