If you start with a 12x16 rectangle and cut square with side length x, when you bend the sides you'll have an inner rectangle with sides 
and 
, and a height of x.
So, the volume will be given by the product of the dimensions, i.e.
The derivative of this function is
and it equals zero if and only if
If we evaluate the volume function at these points, we have
So, the maximum volume is given if you cut a square with side length
Well idk about #16 but #20 I can answer it OK look, number 20 , Y represent height X represent time OK, number a is asking for maximum height , the ball will reach the maximum height when time equal zero so Y = -16(0)^2 + 15(0) + 6 which equals 6 so maximum height is 6 feet, and as for number b , when the ball hit the ground the distance will equal zero so Y = 0 , so by factorizing. the given equation find the values of X, U will probably find 2 values one in +ve and one in -ve take the positive and neglect the -ve and we are done
The answer is:
7/8
have a nice day :)
In order to find the answer to this question you will have to find the missing number in the given numbers we have then fill in the blank to make your expression and your answer.
Therefore your answer is "-4 * -3 = 12."
Hope this helps.
