Answer:
8 square feet
Step-by-step explanation:
Answer:
47 days
Step-by-step explanation:
Since the patch of pads doubles in size every day, the lake would be half covered just one day before it was covered entirely.
The Empirical Rule states that, when the distribution is bell-shaped, around 95% of all observations will be within 2 standard deviations from the mean, which means from μ - 2σ to μ + 2σ.
The binomial distribution is a bell-shaped distribution with:
μ = np and
σ = √(np(1-p))
Therefore, 95% of the outcomes will be in the interval from np-2√(np(1-p)) and np+2√(np(1-p))
Any observation that lies outside this interval (which means greater than np+2√(np(1-p)) or less than np-2<span>√(np(1-p))</span> ) occurs less then 5% of the times and therefore can be considered "unusual".
Answer:
When something is inversely proportional it can be solved by using the equation:
y = k/x
where k is the constant.
So using this we can plug in x and y to find the value of k.
3 = k/4.
Next we isolate k and find that k = 12. Now we use this to find the value of y when x = 8. Plug in x and you get y = 12/8 or y = 3/2 or 1.5.
Another way to solve this is to look at how the value of x changes. When the value of x goes up, the value of y goes down.
In other words, when x is multiplied by some number, y is divided by that number. In this equation we can see that x is multiplied by 2 to go from 4 to 8.
Thus, y must be divided by 2.
Thus, y = 3/2 or 1.5.