Hi Elliemay1, just want to know how you got answer, thus and what the triangle has to do with it. Would like to understand it, if you don't mind. Thanks in advance.
sorry, only seeing this now, Goldiee. To confirm Cashier's explanation:
//∴
In logical argument and mathematical proof, the therefore sign, ∴, is generally used before a logical consequence, such as the conclusion of a syllogism. The symbol consists of three dots placed in an upright triangle and is read therefore.//