Answer:
a and b are positive
Step-by-step explanation:
We are given that
We have to find that a and b are positive or negative.
We have
It means b is positive and greater than 4.
Adding 3 on both sides
Hence, a is positive and greater than 4.
Therefore, a and b are positive
Answer:
here
Step-by-step explanation:
16 karat gold is 16 parts gold to 8 parts other material for a pure gold percentage of 67%.
Answer:
240 minutes
Step-by-step explanation:
If it's 40 minutes for just 5 papers, we need to figure how many minutes it would take to grade just 1. So you have to divide 40 by 5 which is 8. Then 8 time 30 which is 240.
