Acollector has 100 movie posters and 80 band posters. she wants to sell 20 movie posters but still have her poster collection maintain the same ratio of 100: 80. if she sells 20 movie posters, how many band posters should she sell? complete the explanation to find out how many band posters she should sell

Three coins are flipped. what is the probability that there will be at least two tails?

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?

Which of the following is the shape of a cross section of the figure shown below