First blank: 0.1 (since that's the common difference)
Second blank: -3 (-4-(-1)=-3)
Answer:
8 m
Step-by-step explanation:
1) Make sure that they both have the same unit which in this case I'll change Km to m.
3.2 Km x 1000 = 3200 m
2) In order to find how much laps of 400m the athlete can cover you need to understand that one lap is 400 m, thus to find how many laps you have to divide 3200 m by 400 m
3200 m / 400 m = 8 m
To calculate the area of the black material on the flag, we need the shape and the dimensions of the black material itself.
<em>Since the question is incomplete, as the dimension of the flag and the dimension of the black material are not given, I will provide a general explanation</em>
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Assume the shape of the black material is a rectangle.
The area will be calculated as:

Take for instance;

The area is:


Assume the shape of the black material is a square.
The area will be calculated as:

Take for instance;

The area is:


Assume the shape of the black material is a triangle
The area will be calculated as:

Take for instance;

The area is:


So, in general.
You need to first get the shape of the black segment on the flag, then calculate the area using the appropriate formula.
Related link:
brainly.com/question/24251781
3 and -3 multiply for -9 and add for 0