Step-by-step explanation:
(0.9, -0.5) is the answer
The correct answer is1D k 2D k 3Dk
Hello,
It seems that multiplication tables were invented by Pythogore .
Later in the middle ages , a abacus has been invented by a guy who where living near my house : Gerbert d'Aurillac who became pape (Sylvestre 2 ,945-1003).