Sex ratio is defined as the number of females per 1000 males in the population. Find the sex ratio if there are 3732 females per 4000 males in a town.

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?