DUE IN 10 MINUTES. PLEASE HELP. WOULD BE VERY THANKFUL Solve the following problems. Remember that all reasoning must be explained, and all steps of math work must be shown!

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?