Chris used base ten blocks to model 2,781 . he used 278 tens blocks. how many ones blocks did chris use?

Charlie is a car salesman he earns $800 plus a 9% commission on all of her sales for the week if charlie receive the payment for $1960 this week how much where is total sales

Answer this question! 30 points and brainliest! only if you know the answer.

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.