Asap plz! 1. if m/n=5, then m^2−25n^2 = 2. if 3/x=5/y, what is the value of y/x? 3. if (3x+5)^2=ax^2+bx+c, what is the value of a+b+c? 4. 8^(2x−1)=4^(3x+4)

Anthony is making a collage for his art class my picking shapes randomly. he has five squares, two triangles, two ovals, and four circles. find p( circle is chosen first)

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain