A rectangular painting measures 10" x 14" contains a frame of uniform with around the four edges. The perimeter of the rectangle formed by the painting and its frame is 80 inches. Determine the width of the frame

Two parallel lines are crossed by a transversal.what is value of x

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= ?

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?