Answer:
3/30 =1/10
Step-by-step explanation:
add up the number of balls and then
number of black balls divided by the total number of balls.
Answer:
The answer is 60 hours.
Step-by-step explanation:
We could use proportions to solve.



Step-by-step explanation:
construct 90° then measure 4.6 cm and draw a line from F to D