Answer:
72.73% probability of selecting a girl, given the flip resulted inheads
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
Coin resulted in heads
Student is selected at random from a class of six boys and sixteen girls.
Desired outcomes:
16 girls, so 
Total outcomes:
16+6 = 22, that is, 22 students, so 
Probability:

72.73% probability of selecting a girl, given the flip resulted inheads
Answer:
4.2 or 4
Step-by-step explanation:
√18 = 4.24264068712
or 4.2
or 4
Answer:
2 + (7 ÷ 9)x = 5 ÷ 6
Step-by-step explanation:
Given

You can eliminate fractions by turning them into division problems!
2 + (7 ÷ 9)x = 5 ÷ 6