A) x * y = 42 (or x = 42/y)
B) x + y = 23
B) 42/y + y = 23
42 + y^2 = 23y
y^2 -23y + 42 = 0
The numbers are 21 and 2
Multiply the dust particle mass by 5 billion..
On a calculator use the "EE" button is shorthand for: x10^ whatever power you want.
5x10^9 x 7.53x106-10 = 3.765
B - Negotiating.
This is because they are communicating, they haven't yet agreed to anything or committed to the contract as neither parties have signed, thus leading to both C and D to be incorrect.
A, however, is not exactly a term used for this situation - contracting is more of a term used to say someone contracted a disease or the flu or etc.
Therefore, B would be correct as they are indeed negotiating the terms of the contract.
Hope this helps!
