C because that I learned in 2nd grade
Answer:
B
Step-by-step explanation:
There is a pattern. Subtract input from output and it is 11. So, if 11 is the pattern. subtract 51 from A,B,C, and D.Till one of them has the number 11 as answer. 51- 40=11. 40 = B
0.9874 the greatest non zero place is 9 but the nearest digit is 8 when you round it off to 0.9 the answer becomes 1.0
0.9874~1.0
The equation in standard form would be,

All you have to do is move -2/7x to the other side.
Hope this helped
:D
d. every twentieth name on a roster of all students at school