A 100ml solution contains 99% alcohol and 1% water. The formula describes the relationship after x ml of alcohol are removed.
The formula describes the inverse. What is the physical significance of ?**

**So, I’ve done all the work already except that last bit because I’ve never really understood what the inverses actually mean—I just know how to get there, more or less. Could someone explain the physical significance of the second formula and why? Thank you!

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation: