A researcher, studying dolphins in the wild, made the following sketch. Each dot on the map represents one dolphin. The area surveyed by the scientist was
1 km ^2. Based on the researcher's data, how many dolphins would you estimate to be in a 3 km ^2 area?
3
7
14
21
SORRY! Can't show you the pic.
The answer is 21. Just do 3•7 and you get 21.
Connery’s students .......HI
Based on the information given, we know that there are a certain number of dolphins within a 1 km^2 area. To estimate the number of dolphins in a 3 km^2 area, we can assume that the density of dolphins is constant across the surveyed area.
Therefore, to estimate the number of dolphins in a 3 km^2 area, we need to multiply the number of dolphins in a 1 km^2 area by 3.
For the options given, the correct estimate would be:
3 km^2: 3 x number of dolphins in 1 km^2
7 km^2: 7 x number of dolphins in 1 km^2
14 km^2: 14 x number of dolphins in 1 km^2
21 km^2: 21 x number of dolphins in 1 km^2
Since we don't have information about the number of dolphins in a 1 km^2 area, we cannot provide an accurate estimate of the number of dolphins in a 3 km^2 area.
To estimate the number of dolphins in a 3 km^2 area based on the researcher's data, we need to calculate the density of dolphins in the 1 km^2 area first.
Since the area surveyed by the scientist was 1 km^2, we can count the number of dots representing dolphins in that area. Let's assume the researcher counted X number of dolphins in the 1 km^2 area.
Now, to estimate the number of dolphins in a 3 km^2 area, we can use the concept of density. Density is calculated by dividing the number of objects (in this case, dolphins) by the area.
Density = Number of dolphins / Area
So, the density of dolphins in the 1 km^2 area would be X dolphins / 1 km^2.
To estimate the number of dolphins in a 3 km^2 area, we can multiply the density by the area:
Estimated number of dolphins = Density * Area
Estimated number of dolphins = (X dolphins / 1 km^2) * 3 km^2
Here, the 1 km^2 units will cancel out, and we are left with:
Estimated number of dolphins = X * 3
Now, you mentioned four options for the estimated number of dolphins: 3, 7, 14, and 21. To determine the estimated number, we need to know the specific value of X, which represents the number of dolphins counted in the 1 km^2 area. Without that information, we cannot give a specific estimated number.
Please provide the value of X, and we can calculate the estimated number of dolphins in the 3 km^2 area based on the given data.