The mass of a patient decreased by 20 percent every month. If his mass before the decrease was 90kg, how many kilograms had he lost after 3 months ?

❤️ (geometry) does the construction demonstrate how to copy an angle correctly using technology a) yes; the distance between points a and f was used to create circle h b) yes; the distance between points f and g was used to create circle h c)no; the distance between points a and f was used to create circle h d) no; the distance between points f and g was used to create circle h