I WILL GIVE BRAINLIEST THX SO MuCH Yalll

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?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?