A teacher randomly selects 3 exams from 47 exams of which 14 are perfect scores. Find the probability that the teacher selects the ones with perfect scores. Round to four decimal places.

What is the maximum total area that 450cm of string can enclose if it is used to form perimeters of two adjoining rectangles as shown?

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?

What type of symmetry does a rhombus have?