Answer: 12 minutes
Step-by-step explanation:
Two rates for hoses A and B. FP is the Fish Pond.
A = 20 min/FP or (1/20)FP/min
B = 30 min/FP or (1/30)FP/min
The time in minutes, X, to fill one FP:
1FP = X*((1/20)FP/min) + X*((1/30)FP/min)
1FP = X*(1/20+1/30)FP/min
1FP = X*(2.5/30)FP/min
X = 12 minutes
Answer:
721.54
Step-by-step explanation:
We have to convert the 2% given in the statement into a z-score, as follows:
P (X> x) = 2% = 0.02, P (Z> z) = 0.02
thus find z such that:
P (Z <z) = 1 - P (Z> z)
P (Z <z) = 1 - 0.02
P (Z <z) = 0.98
we look for what value of z corresponds to in the normal distribution table and it is 2.06
x = m + z * sd
m is mean and sd standard deviation, replacing:
x = 497 + 2.06 * 109
x = 721.54
721.54 would be the minimum score.
Answer:
117
Step-by-step explanation:
4 : 9 = 52 : 117
Since
4 : 9 = 52 : X
Then we know
9/4 = X/52
Multiplying both sides by 52 cancels on the right
52 × (9/4) = (X/52) × 52
52 × (9/4) = X
Then solving for X
X = 52 × (9/4)
X = 117
Therefore
4 : 9 = 52 : 117
Answer:
Probability call the likelihood of the occurrence of an event.
Step-by-step explanation:
No C
