Answer:

Step-by-step explanation:
A polynomial is in its standard form when arranged in descending order based on the variable involved.
Looking at the provided polynomial

- s is presented in descending powers
- r is in ascending order
Thus, the first term of the polynomial should meet these criteria:
- Power of r is less than 2
- Power of s is greater than 4.
The following meets these requirements:

The work is illustrated and shown.
Answer:
E
Step-by-step explanation:
My guess is E, since if you total everything and then divide by 2, it equals 30.
The solutions to the equation are 
Explanation:
Given the equation 
, we aim to find the solutions of the equation.
Let us use
and 
Thus, the equation transforms into

Factoring the equation results in:


Inserting back
and allows us to solve for x.
Initially, we will substitute 
Consequently, we find;



Similarly, by substituting
, we derive;



Thus, the solutions to the equation are 
Answer:

Step-by-step explanation:
To establish independence between two events, we must understand the concept of independence:
Events are deemed independent if
, which means that the occurrence of one does not influence the probability of the other event.
In this situation, the only selection that aligns with the independence criterion is
. Other options do not comply with the independent events definition.