The elevation of Mt. Everest is 29,028 feet. The elevation of the Dead Sea is –485 feet. What is the difference in the elevation
2 answers:
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Answer:
The money that Aura has is $17
The money that Brain has is $23
The money that Eric has is $46 .
Step-by-step explanation:
The sum of total money does Aura , Brain , Eric have = $86
The money that Eric has = 2 times money that Brain has
The money that Aura has = $6 less than that Brain has
Let The money that Aura has = $A
Let The money that Brain has = $B
Let The money that Eric has = $E
Now, According to question
∵ Sum of total money does Aura , Brain , Eric have = $86
So, $A + $B + $E = $86
Or, A + B + E = 86 .........1
Again
E = 2 × B ..........2
Again
A = B - 6 ..........3
So, (B - 6) + B + 2 B = 86
Or, (B + B + 2 B) = 86 + 6
Or, 4 B = 92
∴ B =
i.e B = 23
So,The money that Brain has = B = $23
Putting the value of B in eq 2
∵ E = 2 × B
So, E = 2 × 23
Or, E = 46
So,The money that Eric has = E = $46
Putting the value of B in eq 3
∵ A = B - 6
So, A = 23 - 6
Or, A = 17
So,The money that Aura has = A = $17
Hence, The money that Aura has is $17
The money that Brain has is $23
The money that Eric has is $46 . Answer
Answer: The running time should at least 119.32 seconds to be in the top 5% of runners.
Step-by-step explanation:
Let X= random variable that represents the running time of men between 18 and 30 years of age.
As per given, X is normally distrusted with mean and standard deviation
.
To find: x in top 5% i.e. we need to find x such that P(X<x)=95% or 0.95.
i.e.
Since, z-value for 0.95 p-value ( one-tailed) =1.645
So,
Hence, the running time should at least 119.32 seconds to be in the top 5% of runners.