(2-5i)(4+7i)=2(4+7i)-5i(4+7i)=8+14i-20i-35i²
recall that i²=-1,
8-6i+35=43-6i
43-6i is the final answer
Answer: 112-15i
Step-by-step explanation:
(7)(8)+(7)(7i)+(-8i)(8)+(-8i)(7i)
56+49i-64i(-56(-1))
56+49i-64i+56
112-15i
Answer:
I can only help with part A
mean rounded to nearest tenth for Third Period: 91 (91.3)
mean rounded to nearest tenth for Fifth Period: 89.1 (89.12)
anybody correct me if i got this wrong please!
Answer:
20
Step-by-step explanation:
