Two congruent, isosceles triangles are joined, to form a parallelogram. The largest angle of the parallelogram is 116(degrees) Write two equations and solve them to find out the value of a and b

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.