Mr. Jacobs has three children: two girls (Sue and Karen) and on boy (David). After each meal, one child is chosen at random to wash dishes.
a) If the same child can be chosen for both lunch and dinner dish duty, construct a tree diagram or list a sample space of all the possible outcomes of who will wash dishes after lunch and dinner on Sunday.

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?

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)