2x + y = 8

x + 3y = 19

Find the value. a. 0.003 b. 0.03 c. 0.3 d. 3

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

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?