2 answers:
Answer:
The probability is:

Step-by-step explanation:
Keep in mind that the probability of getting a head is always the same for each

Therefore the probability of not having a head is:

So if we throw the coin 4 times the probability P of not getting any head is:


0.5=P I believe is the answer
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The value of b is -5
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10/21
Step-by-step explanation:
Answer:
-9,-21
Step-by-step explanation:
let the numbers be x and y and x>y
x-y=12
y=2x-3
x-(2x-3)=12
x-2x+3=12
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x=-9
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315 dollars. u basically just multiply 10.50 with 30 hours s