The solution of v + 17 < or equal to 20

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?