No, 40,000 has a value of 40,000
Answer: 3√-20 = 3√20√-1 = (3√20)i
Step-by-step explanation:
√-20 can be written √20√-1 since
(√20√-1)^2 is indeed -20.
Answer:

Step-by-step explanation:
All three triangles in the figure are similar. Therefore, we can set up the following proportion:

Cross-multiply to solve:
.
Answer:
the amount after 3 weeks is $37.33
Step-by-step explanation:
Given that
His balance is -$48.82 i.e. overdraft
Now in order to get the positive balance, he plans to deposit the money of $28.55 per week
We need to find out the amount after 3 weeks
So,
= -$48.32 + $28.55 + $28.55 + $28.55
= $37.33
hence, the amount after 3 weeks is $37.33