5 hours and 30 minutes ya que ambos trabajaran la mitad del trabajo
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:
√37
Step-by-step explanation:
My first rectangle is 1 unit wide and 24 units long. Its area
is 24 square units and its perimeter is 50 units.
My second rectangle is 2 units wide and 12 units long. Its area
is 24 square units and its perimeter is 28 units.
My third rectangle is 3 units wide and 8 units long. Its area
is 24 square units and its perimeter is 22 units.
My fourth rectangle is 4 units wide and 6 units long. Its area
is 24 square units and its perimeter is 20 units.
A three by three dot grid box would make a box with a height and length of two boxes, so the area of this would be 4.
