Answer:
Step-by-step explanation:
we know that
Let
x------> the number of nickel coins
y-----> the number of quarter coins
we know that
-----> equation A
----> multiply by 100 both sides
-----> equation B
Substitute equation A in equation B and solve for y
------> 
To calculate P(at least one valve opens), we can find 1 - p(no valves open).
This is equal to 1 - (0.05)^5, or 0.9999996875.
P(at least one valve fails to open) is equal to 1 - p(all valves open and none fail). This is 1 - (0.95)^5, or 0.2262190625.
Answer:
Step-by-step explanation:
Center (0,0)
radius = √16 = 4
He payed $15.30 is you divide 13.60 by 8 you get 1.70then you just add 13.60+1.70 because he also bought a pound
