D.
Just adding these equations results in them being placed in an equation as it appears.
Probability of 1/4
2 possibilities x 2 possibilities x 2 possibilities = 8 total possibilities:
Heads, Heads, Heads
Heads, Heads, Tails
Heads, Tails, Tails
Heads, Tails, Heads
Tails, Tails, Tails
Tails, Tails, Heads
Tails, Heads, Heads
Tails, Heads, Tails
2 of which result in all of the same outcome:
Heads, Heads, Heads
Tails, Tails, Tails
2 results/ 8 possibilities = 2/8 = 1/4
Answer:
Step-by-step explanation:
We have that 
Then:
Finaly, the answer is 
Answer:
14.38
Step-by-step explanation:
1. multiply the 5 packs of pencils times 0.79 each (5x0.79 = 3.95)
2. multiply the 8 packs of pens times 1.19 each (8x1.19=9.52)
3. add the total of pens and pencils together (3.95+9.52=13.44)
4. multiply 13.44 times 7% sales tax (13.44x.07=0.94)
5. add the total plus the sales tax (13.44+0.94=14.38
