about 4 out of every 5 people are right handed. if there are 30 students in a class, how many would you expect to be right hande
2 answers:
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Answer:
Step-by-step explanation:
Expression for the rectangular area and perimeter are, respectively:
After some algebraic manipulation, area expression can be reduce to an one-variable form:
The first derivative of the previous equation is:
Let the expression be equalized to zero:
The second derivative is:
According to the Second Derivative Test, the critical value found in previous steps is a maximum. Then:
The maximum area is:
the picture in the attached figure
Step 1
Find the perimeter of the scaled-down model of a walkway (Quadrilateral ABCD)
Step 2
Find the scale factor
if Quadrilateral ABCD is similar to Quadrilateral EFGH
then
Step 3
Find the perimeter of the actual walkway (Quadrilateral EFGH)
therefore
the answer is
