2i(4+5i)(4-5i)/4+i find the quotient and express it in its simplest form
a; 82/16+32/17i

b: 82/17+328/17i

c: 82/16-308/16i

d: 1/3+11/3i

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain