Kate paid $27 for a dress that was on sale at 10% off. what was the original price for this dress?

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

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?