What? You said there were two kinds of "kindle", K(1) and K(2). Where did K(3) come from? Without any information about K(3) it is impossible to answer this. Did you leave something out?b. Write an equation that represents the maximum and minimum value of
x and y when the SA of K(3) is 42.66 in.
my answer: Either or
No, you didn't. " " does NOT reduce to "x+ y= z". For example, but .Note: For 'c' I want to know if it's possible to have a minimum and maximum value of the length and width when the diagonal is 6 in. My guess is that you can only have 1 combination of 'x' and 'y' that gives you a SA of 42.66 and a diagonal of 6 in.
c. Write an equation/system of equations that represents the maximum and minimum value of x and y if the diagonal of K(3) is 6 inches.
my answer: --> y = -X + 6 (If I simplified that right)
If and xy= 42.66, then y= 42.66/x so . Multiplying both sides by , or . If you let , this becomes the quadratic equation . Solve that for u, then take the square root to find x.and or ; where the two lines intersect is the value of x and y when the diagonal is 6.
But are you sure you have interpreted the question correctly? The problem said "find maximum and minimum" values, not specific values.