Which shows the correct substitution of the values a P in C from the equation 1 equals negative 2X plus 3X squared plus one into the quadratic formula X equals -3+ or minus the square root of B squared -4 AC over to a

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

What is the total surface area of this square pyramid?