Televisions and computer screens are usually advertised based on the length of their diagonals. if the height of a computer screen is 7 in. and the width is 9 in., what is the length of the diagonal? round to the nearest inch.

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Two parallel lines are crossed by a transversal. what is the value of x? x = 40 x = 70 x = 110 x = 130

X+ y = 5 ; x - y =3 solve using linear combination