Answer:
9. 1/2÷1/4
=1/2×4
=2
10. 1/12÷5/6
=1/12×6/5
=1/10
11. 5/6÷5/9
=5/6×9/5
=3/2
12.2 2/3%
=8/3%
=8/300
=2/75
=0.02666667
number 12 is
the constant of variation or namely its slope will be
12.5
Step-by-step explanation:
you can solve this by dividing 250/20=12.5
59%
simply, it would be 11+2/22 = 59%
I assume there are no student that passed 0 tests
