Evaluate x over y for x = 2/3 and y = 5/6. a. 5/9 b. 4/5 c. 5/4 d. 9/5

B. 4/5

Step-by-step explanation:

x over y means x divided by y

2/3 divided by 5/6

When you divide fractions you follow this rule: CCF (Copy, Change, Flip)

1. You copy the first fraction as it is         2/3

2. You change the sign from division to multiplication          X

3. You flip the numerator and denominator of the last fraction           6/5

New equation:

  2                 6

   X      Multiply straight across the numerators, then denominator

  3                 5

12/15 is new answer.  Now simplify it.  3 can go into 12 and 15.

4/5

16.75 cm

Step-by-step explanation:

The circumference of the circle is πd

The diameter is 16, so the circumference is 16π.

The minute hand goes for 20 min between 3:12 and 3:32

20 min is 1/3 of 60 min.  

Therefore, the minute hand swept 1/3 of the circumference, or 1/3(16)π

1/3(16)π = 1/3(16)(3.14) = 16.75 cm