Posted by Juliette on Monday, December 8, 2008 at 4:38pm.
Could someone show me how to solve this joint variation problems?
Y varies jointly as x and y and inversely as w. Write the appropriate combined variation equation and find z for the given values of x, y and w. z=15 when x equals three, y equals four, and w equals nine, x equals 1.5 y equals 20.5 and w equals 5.4 (I don't know how to do a variation that is both joint and inverse).
Z varies jointly as x and y and inversely as w.. Write the appropriate combined variation equation and find z for the given values of x, y and w. y equals 120 when x equals eight and z equals 20; x equals 54 and z equals seven. (same problem as the last one).
If x1, y1 and x2, y2 satisfy xy=k, then x1y1 equals x2y2. 3,y and 18,6 (I am confused how x1y1=x2y2, yet the y values are differing). How do you find x or y for this?)
~Thanks for your help, Juliette

algebra  bobpursley, Monday, December 8, 2008 at 4:48pm
z=k(xy)/w
20=k(120*8)/20 find k
On the second part, (after the semicolon), y is not mentioned.
x1y1=k=x2y2 because xy=k for any x,y.
3y=18*6 solve for y.

blgs anifjut  blgs anifjut, Saturday, January 17, 2009 at 3:32am
qtervgpoc uwcfsi tpew yqwfeix pcenu amkq vwbkjd
Answer This Question
Related Questions
 VariationCheck Problems  Can you please check my answers? Thanxs! Write an ...
 variation  Can you please check my answers? Thanxs! Write an equation that ...
 variation  Can you please check my answers? Thanxs! Write an equation that ...
 Check my answers. Algebra  Can you please check my answers? Thanxs! Write an ...
 MathII ( Joint and Combined Variation)  1. R varies jointly as S and t. If R=1...
 Algebra 2 Honors  Hey, we recently started a topic in class that I don't ...
 Algebra  Hi! Can you please recheck my answers. Mt teacher said some of them ...
 math  Write the variation and find the quantity indicated. F varies jointly as ...
 Algebra worksheet  Hello. My algebra teacher gave me this worksheet last week ...
 algebra  find the variation constate and an equation of variation where y ...
More Related Questions