Answer:
36
Step-by-step explanation:
Given
m² - 2mn + n² , substitute values
= (- 2)² - 2(- 2)(4) + 4²
= 4 - 2(- 8) + 16
= 4 + 16 + 16
= 36
Answer:
radius = 5
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Here r² = 25 ( take the square root of both sides )
r =
= 5
Answer:
768
Step-by-step explanation:
Volume is base times height. To find the base, we can see that it is a triangle. Sure! 8 times 12 would be 96, and divide that by 2 to get 48. That would be the area of the triangle.
To find the volume, all we need to do is multiply by 16. 48 times 16 is 768.
X = 89
Used the Pythagorean theorem (a squared plus b squared equals c squared)
You can distribute the 4, and you get:
![4(10) +18 = 40+18](https://tex.z-dn.net/?f=4%2810%29%20%2B18%20%3D%2040%2B18)
Then add to get your answer: