Answer:
23+12=
Step-by-step explanation:
you just need figure it out in your head and see what sounds right
A, C, D, F? Not sure but took a good guess
Answer:

Step-by-step explanation:
To factor the equation, break it into two binomials which multiply to make the equation. To write these binomials (x+a)(x+b), find factors which multiply to -20 and add to -1 for a and b.
20: 1, 2, 4, 5, 10, 20
-5+4 = -1

42 students can play all sports
1- is they have distinct values
2- variables referring to x or y
hope this helps you out.