Jim has 6 quarters, 1 dime, 5 nickels, and 2 pennies in his pocket. if one coin falls from his pocket, what is the probability that the coin is a quarter or a penny?

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Given a: b and b: c, find a: b: c. write the ratio in simplest form. a: b=6: 10 and b: c=21: 33

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.