Answer:
15m
Step-by-step explanation:
Since the square has an area of 9m^2 it has to have sides that are 3m. There are 3 sides that are 3m. An equilateral triangle has the same sides so it has 2 sides that are 3m. There are 5 sides that are 3m. The perimeter is 15m.
Answer:
5 people are Barefoot
Step-by-step explanation:
6+4= 10. This is the amount of people who have at least something on their feet
10-3=7. The 3 must be subtracted because it is already included in the people who have something on their feet
12-7+5. Because why not?
Action. - You should put 3 more blocks on the right hand side in order to balance the scale.
Hope this helps!
If the area between the graph of y = x^2 - c^2 and the x-axis is 36, then
![\int\limits^c_{-c} {(x^2-c^2)} \, dx =36\\ \frac{x^3}{3}-c^2x \left \} {{c} \atop {-c}} \right. =36\\\frac{c^3}{3}-c^3+\frac{c^3}{3}-c^3=36\\\frac{-4c^3}{3}=36\\c^3=-27\\c=-3 ](https://tex.z-dn.net/?f=%20%5Cint%5Climits%5Ec_%7B-c%7D%20%7B%28x%5E2-c%5E2%29%7D%20%5C%2C%20dx%20%3D36%5C%5C%20%20%5Cfrac%7Bx%5E3%7D%7B3%7D-c%5E2x%20%5Cleft%20%5C%7D%20%7B%7Bc%7D%20%5Catop%20%7B-c%7D%7D%20%5Cright.%20%3D36%5C%5C%5Cfrac%7Bc%5E3%7D%7B3%7D-c%5E3%2B%5Cfrac%7Bc%5E3%7D%7B3%7D-c%5E3%3D36%5C%5C%5Cfrac%7B-4c%5E3%7D%7B3%7D%3D36%5C%5Cc%5E3%3D-27%5C%5Cc%3D-3%0A)
Therefore, the exact positive value of c is 3.