Answer:
40
Step-by-step explanation:
(6 + 2i)(6 - 2i)=40
Answer:
4/5
Step-by-step explanation:
10:100=8:x
x= 100*8/10
x= 80 (80%)
80% = 80/100 = 8/10 = 4/5
Answer:x=4
Step-by-step explanation:
Let the amount invested at 4% be = x
Let the amount invested at 3% be = y
Given is:
or .... (1)
As, total income for the two investments is $194, so equation is:
....(2)
Putting value of x from (1) in (2)
And x=5200-y
Hence, money invested at 4% is $3800 and money invested at 3% is $1400