Both B and C will give you the correct factorization for this equation.
When you factor a quadratic, you are looking for factors of the last number (-42) that add up to the middle coefficient (1). Below are the factors of -42.
1*-42
-1*42
2*-21
-2*21
3*-14
-3*14
6*-7
-6*7
And since these two are the only ones that add up to 1, we use these in parenthesis, creating the following (x - 6)(x + 7) - which is answer C. You also can switch the order due to the laws of multiplication. If you switch them around you get (x + 7)(x - 6) - which is answer B as well.
Answer:
q-22=24. Hope this helps.
Step-by-step explanation:
22 less than a number, meaning 22 is subtracted FROM an unknown variable. Going by this you would add 22 on both sides, giving you an answer of 46.
Answer:
18 students
Step-by-step explanation:
This is a division problem.
20 divided by 10/9
20/(10/9) =
= 20/1 * 9/10
= 180/10
= 18
Answer:
1
Step-by-step explanation:
Remember that 
Plug it in:
I divided by 3 then multiplied by 2.
13 and 26 = 39. So the numbers are 13 & 26.
