Answer:
122°
Step-by-step explanation:
180-58=122
you minus angle BCA from 180 is because a straight line is 180 degrees
Answer:
144 un^2
Step-by-step explanation:
Base: 4 × 11 = 44
Left-most face: 3 × 11 = 33
Top face: 5 × 11 = 55
Triangular faces: 3 × 4 = 12
Add: 44 + 33 + 55 + 12 = 144
Answer:
![V=22\ \text{inches}^3](https://tex.z-dn.net/?f=V%3D22%5C%20%5Ctext%7Binches%7D%5E3)
Step-by-step explanation:
Given that,
Height of a triangular pyramid = 6 inches
The area of the base of the speaker is 11 square inches
We need to find the volume of the speaker.
The formula for the volume of triangular pyramid is given by :
![V=\dfrac{1}{3}Ah](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B1%7D%7B3%7DAh)
A is area of base and h is height
![V=\dfrac{1}{3}\times 11\times 6\\\\=22\ \text{inches}^3](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B1%7D%7B3%7D%5Ctimes%2011%5Ctimes%206%5C%5C%5C%5C%3D22%5C%20%5Ctext%7Binches%7D%5E3)
So, the volume of the speaker is
.
True if by confidence you mean the margin of It being correct,If not Its false
you must factorize it as a difference of squares
a^2-b^2 = (a-b)(a+b),
9b^2-25 = (3b)^{2-(5)^2= (3b-5)(3b+5)