Match the proportion to the correct value of

y
.

1.

y10=42

y=4.9

2.

107=7y

y=−2

3.

yy−1=46

y=−8

4.

y+89=y+85

y=20

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units