Answer:
A, C, D
Step-by-step explanation:
Solve all equations:
A. 

This is incorrect equality, so the equation has no solutions.
B. 

This is correct equality, so the equation has infinitely many solutions.
C. 

This is incorrect equality, so the equation has no solutions.
D. 

This is incorrect equality, so the equation has no solutions.
Answer: 42
Step-by-step explanation:
Let A represents the number of freshmen participated in sports and B represents the number of freshmen participated in clubs.
Then , we have given that

Using formula

We have,

Now, the number of students are involved in just sports is given by :-

Hence, 42 students are involved in just sports.
One bag of popcorn is 1.33
C because since X in the equation is negative the negative value for x will cancel and 7.2 becomes positive. there fore 7.2+3.9=11.1
Answer:
2 (x^2-10)((x^2 +10)
Step-by-step explanation:
2x^4 - 200
Factor out 2
2(x^4 -100)
The inside is the difference of squares (a^2 -b^2) = (a-b)(a+b)
2 (x^2-10)((x^2 +10)