Answer:
8
Step-by-step explanation:
Let the amount of shells collected by Aaron be

and the amount of shells collected by Maria be

respectively. Then the following system of equations should be solved:

First of all, express

out of first equation:

Then, replace

in second equation with found expression and solve it:



Finally, replace

in first equation with found value and solve it too:


So, Aaron has found
7 shells while Maria has found
21.
Theres 8 edges, 5 vertices, and 5 faces.
Answer:
360 degrees
Step-by-step explanation:
the exterior angles of the triangle is 360 degrees
If 90% of bodies are water weight, then we have 10% left.
76+10% = 83.6.
83.6 total.