Answer:
- 3/20, with the assumptions below.
Explanation:
The question seems incomplete.
In order to show you the procedure, I make some assumptions.
Assuming that Ricky wants to split the full content of the 3/4 of a bag between his 5 friends, to find what fraction of the bag will each friend receive you must divide 3/4 by 5.
The operation is:

Convert the whole number 5 into fraction using 1 as denominator:

Transform the division into multiplication changing the divisor into its reciprocal:

Multiply numerator with numerator and denominator with denominator:

There are 150 9th graders and 300 10th graders
4 times (x^2-9x+8). Hope that helps!
Answer:
Equation
28 = X - 12
Solve for X
Isolate the X
28+12 = X
40 = X
Step-by-step explanation: