Firstly, subtract both sides by 4x:
Next, subtract both sides by 5:
Lastly, divide both sides by 2 and your answer will be
As y is directly proportional to x, there must be a constant n, where y=nx
n=y/x
n=10/15=2/3
y=(2/3)x
Yes I think it is correct
Answer:
15.87% of blue whales eat more than 5,850 pounds of fish
Step-by-step explanation:
Mean = 5000
Standard Deviation = 850
We need to find P(x>5850) = ?
We can find using z-score
z = x - mean/ standard deviation
z = 5850 - 5000/850
z = 850/850
z = 1
Now, P(x>5850) = P(z>1)
Finding value of P(z>1) by looking at the z-score table
P(z>1) = 0.8413
The normal distribution gives area to the left , so subtracting it from 1 to gain the answer
1-0.8413 = 0.1587
Now, to find percentage multiply it with 100
0.1587 * 100 = 15.87 %
15.87% of blue whales eat more than 5,850 pounds of fish
Answer:
14+28
Step-by-step explanation: