Answer:
w=4
Step-by-step explanation:
18+3w=30
3w=30-18
3w=12
w=4
250............................
Answer:3/20
Step-by-step explanation:
Heads=Boy
Tails=Girl
If the first 3 students are boys, all 3 coins must be heads.
Because in 3 of these experiments, the coins all land on heads, and there are 20 experiments completed, 3 out of the 20 experiments are 3 boys; 3/20.
The correct answer is the letter B)
