The total area of the pyramid is the area of the square plus the area of the four triangles which is 62+62+62+62+(11*11)=369 cm2
Answer:
The angle of elevation is 36.87 degrees
Step-by-step explanation:
see the attached figure to better understand the problem
In the right triangle ABC of the figure
----> by CAH (adjacent side divided by the hypotenuse)
substitute the given values
![cos(\theta)=\frac{12}{15}](https://tex.z-dn.net/?f=cos%28%5Ctheta%29%3D%5Cfrac%7B12%7D%7B15%7D)
![\theta=cos^{-1}(\frac{12}{15})=36.87^o](https://tex.z-dn.net/?f=%5Ctheta%3Dcos%5E%7B-1%7D%28%5Cfrac%7B12%7D%7B15%7D%29%3D36.87%5Eo)
Good news: they are all like terms
9x + 5x -3x -8x = 3x
Answer:
<h2>25.6 </h2>
Step-by-step explanation:
Since the <em>mean</em> is also <em>average</em>
You
1) Add <em>all </em>your values
-----18+19+21+22+25+27+29+30+31+34
<h3> = 256</h3>
2) Then, divide [256] by how many points/numbers you have
-----256 / 10
<h3> = 25.6 </h3>
Your average/mean is 25.6
Answer: 5
Step-by-step explanation:
5(n-1)-10=2n
5n-5-10=2n
5n-2n = 10+5
3n = 15
n = 15/3
n = 5