Martin has 15 texts messages on his phone .two thirds of them are from his sister how many texts does martin have from his sister?
i need three different ways to calculate this answer?

Which solid has two triangular bases and three lateral faces, each in the shape of a rectangle? triangular prism triangular pyramid rectangular prism rectangular pyramid

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg