The net of a square pyramid is shown in the diagram what is the total surface area of the square pyramid in square inches

The triangles are similar. what is the value of x? show your work.

What is sin 7x/4 ? i need on this urgent trig

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?