Answer:
43.5 meters
Step-by-step explanation:
Area of regular hexagon =

in the problem you have a = 10 meters
and p = apothem = 8.7 meters
so if you apply the formula
you will have
area =( 1/2) × 10 × 8.7
area = 43.5 meters
We are given that there are a total of 78 students. If we set the following variables:

Then, the sum of all of these must be 78, that is:

Since there are 15 in chemistry and physics and 47 in chemistry, we may replace that into the equation and we get:

Simplifying:

Now we solve for P by subtracting 62 on both sides:

Therefore, there are 16 students in physics
Answer:


Step-by-step explanation:
Given


--- not -67

Required
Find q and r
Substitute values for d and b



Make q the subject

means that r is less than 8 but greater than or equal to 0
And r and q are integers.
Let 



No other true values of r and q can be gotten.
Answer:
11 degrees
Step-by-step explanation:
-2+13=11
The answer to the question is all real numbers except 2 and 4.